To learn electronics in a very different and effective way, and gain access to Mr Carlson's personal designs and inventions, visit the Mr Carlson's Lab Patreon page here: www.patreon.com/MrCarlsonsLab
Do not forget that on some older products its best to check the paint for lead because you don't want that hanging around in your bead blaster and hearing protection while in the shop is also a good idea because a typical compressor runs at about 180 -190 decibels and most hand tools at about 150, Might want to check the machines in your shop to see how loud they are because it would do you no good if your hearing went bad especially working with radios and repairing them.
It is nice to see the mechanical side of the shop come together. You are so correct about air hoses and the pressure in them. I am now retired but I worked Aerospace for 37 plus years and have connected and disconnected a whole lot of air hoses. When McDonnell Douglas (later Boeing after the merger) installed air hoses with built in bleed valves (you pulled the ring back and the nipple would rotate about 30 degrees to the side and would release any pressure) I felt like the company got "Wussy" because real men just uncouple an air hose and hold it against the pressure. Well I came to really liked the new couplers as it also made connecting a device to a pressurized air line so much easier. Connect to the coupler with no pressure and rotate the fitting into alignment to pressurize. Small hoses were not a big deal but the bigger air lines ... it sure made a difference. I also favor the dark grey/black hammer tone paint over the lighter colors. The speaker came out very nice. I think I remember a video you did where you used a roller over wet paint to get a similar effect, that project came out nice as well. I am proud to have been supporting you at your highest level on Patreon for years. A good teacher is worth their wages!
Best thing I ever did with my garage was take the compressor out. Built a small well-insulated utility building in back that houses some plumbing for the infloor heat, compressor, etc. Nice shop!
Mr. C. Thanks ! This was little different project. ......Have you finished the 3-point antenna ?.....Where is the Firebird.....Let's see. What else can I bug you about.....No, Just kidding.....Once again. Thanks for taking the time to put these video's together.........Rick. McMurray, PA.
I came across a suggestion on another TH-cam Channel and it sounded very good to me. Mount LED strips in the top, inside of the glass bead cabinet to illuminate your work brightly, evenly, and efficiently. You could probably find someone who could wire them up for you. You know I am NOT serious! I am reminded of that generator you worked on. Mr. Carlson is NOT limited to just radios and audio. :-)
I know nothing about electronics, other than out professor cursorily explaining R, C and L when taking a differential equations class. However I am hooked on these videos even though I don't understand much of it. It must be the microphone, the best sounding channel on TH-cam! One thing that would be cool to see is a back to back comparison of a tube vs solid state preamplification. In a sense, what would happen if we feed the same signal to a solid state device vs a tube device, complete with vintage oscilloscope images!
You make everything instructive and interesting Paul, which is why you are the only person I support on Patereon. But I am beginning to miss the more instructive and in depth videos you used to make, like the one you did of the avalanche effect and time domain reflectometry, or the wobulator, or the in depth look at switch mode power supplies, or the innards of vintage tektronix equipment. That's what made you so interesting and unique. While this lighter content is still interesting, I'd love to see more of the design and improvement you used to do. You have an Aladdin's cave of vintage equipment, and an extraordinary breadth and depth of knowledge and understanding. An hour of you is never too long! Please, can we have more of that?
Thanks Dave. Yes that paint is great stuff, and now comes in copper color too. I will have to try that on some old copper plated chassis that look rough.
I have very limited knowledge in electronics, however I do fountain pen restoration as a hobby. The similarities are patience, innovative alternative parts & tools. Applying logic & common sense.
I recall speakers like this used in schools. The frequencies reproduced were excellent via the tube amplifier. You knew that the bass would be good as the 60 cycle bled through nicely!
Hi Paul - You certainly have some top-class gear in the Labs & W-Shop. Years back in the disco industry I had a lot of fun coloring hammertone paint for the right effect on the equipment & the color organ lighting housings + other gear. Thanks for this ditty on how you tackle the simple stuff, enjoyed. Cheers, Tony in S-Africa...
Love the jacket! I have one just like it. I have a 60 gallon compressor and my HF glass bead cabinet is permanently connected to the air line through 3/4 inch copper line with a shut off valve. I've done a bit of car restoration, drive-in speaker restoration and the glass bead cabinet is extremely useful. Also done a lot of painting and powder coating. Current projects are a couple of 3 slot Northern Electric payphones.
Hi Paul. If you haven’t already, buy an Air Fuse device and install it ahead of the air line. There are different types dependent on CFM and pressure. This device will shut off air to the hose if there is a breech of the line. If the Air Fuse senses no resistance in the line, it will shut off air to the line. This is just another safety device that’s good to have. Great job on the shop!
This is the sort of man you could trust with any job and know that job will be exceptionally done, I mean, the lab is fantastic but look at this workshop, it is more like a surgery room in a hospital. Immaculate and a place for everything and everything in its place. It’s a joy to see folks who still maintain the highest of standards!
love the speaker, paper cones are my favorite... i'd put a mesh or speaker cloth behind that grill just to protect the cone and maybe create a nice color contrast..
New shop looks great. I put my noisy compressor in a Rubbermade garden shed outside, They are molded double wall plastic and suppress the noise reasonably well. They go together easily and look good in a residential setting. It is less work and less expensive than building something from scratch. As you know I'm in Ontario the compressor seems to handle the cold just fine. I can just barely hear it run. The utilization is low but under power all the time. You should put an auto drain valve on the tank. I need to drain the tank and two cylinder intercoolers. I also have my 3 phase rotary convertor in the shed too. I don't have to listen to that either I wired the shop with 4 pin plus ground Hubbel twist lock connectors. I use the 4th pin and gnd to turn on the rotary convertor so any machine that needs it can turn on the convertor. Starting the rotary convertor and lathe or mill spindles simultaneously works fine. I had my doubts but it is just fine. Put a big indicator light on the convertor so you can tell if it is on. Good luck with your magnificent new facility.
Another just ... Frick'n Fantastic video! I thought the 'shop' noises added that extra touch of feeling like being there with you! Thanks, Mr. Carlson. I can't tell you enough how much I love every one of your videos. You have that 'Radio Announcer' voice that sounds ... well yes, even better than the 'speaker' in this restoration 😉.
Very nice work Paul! That little speaker looks 100 times better than it did and actually now resembles some of your older "Hammered" looking black test equipment. By the way I just wanted to say that was a great idea to give a few safety tips around the shop. I work in a 12 Bay shop and i see air hoses misused all the time. If we don't look after our ears and eyes now nobody else will. Great video!
@6:45 yeah , used the smaller diameter hoses and we typically drop and unlatch..behind you - where it unleashes that energy on the ground. I have no experience with those larger hoses..thanks for the advice
Excellent video. We get to see one of your new labs in operation. The speaker enclosure reminds me of public school public address system speakers way back in the 60s.
Good job on the painting. May I suggest a "lazy Susan" turn table so that you can turn the what ever you're painting without picking it up. Another one is to place small angles under the object b eing painted so the the bottom will stick to the table's surface and no marks where it was resting on the table. Good job on the shop cleanup.
I'm so glad you give safety advice like you did about the air hose. Great information about speakers too. I'll add that you've got the cleanest workshops I've ever seen.
In most TH-cam videos, I'd be surprised that the Creator would take the time to fully set up the "entering the shop" shot instead of cutting straight to the business, but not on Mr. Carlson's Lab. I did truly feel like I was there in the shop with you, and the audio was, as always, perfect. What's the startup current on the compressor? It really dimmed your lights when you threw the disconnect! All that shop needs is a car lift, a parts washer, tire mounter, wheel balancer, and an upstairs apartment for me to move into! 😄And with your antenna, I can probably receive my favorite late-night talk radio show on a dozen AM stations. I would have to move the drill press to the left slightly, so that I could move the workbench under the window to the left slightly, because the misalignment is triggering my usually-mild OCD. Great safety tip on connecting/disconnecting air tools and hoses while pressurized. There have been a few times that I've launched an air chuck a few feet because I didn't have a tight grip on it while disconnecting. I've watched friends get hit by, or hit a car with, a hose connector that was under pressure while disconnecting. I've watched as people fight to connect a hose to another pressurized hose - the quick-connect fittings are actually quite easy, but only when you're not fighting 100+ psi. I'm horrible at painting, but I found success in hanging pieces from a long bungee cord hooked to an eyelet in my garage ceiling.
Wow! What a clean garage.. I recall seeing a similar speaker cabinet hanging at our old Kmart locations out in the Garden center and in the back areas..
A great look at your shop! It was so big AND clean! Mine is small and cluttered. But I get things done! I use that paint a lot. That speaker reminds me of when I was in Jr. High(now called middle school) I was a projectionist and we had an in-room projector on a cart and it had a speaker very similar to this one. Love from NW Colorado. Thanxz
Thanks for the restore of the speaker! Now, you can get that off your mind, haha. You have mentioned a few times, that you need to clean that speaker up! Great restore!
Mr. Carlson, thank you again for your video and your work. I have nothing to do with electronics beside to watch other´s how they repair and explain the stuff. Love to watch your videos at night and I have also to admit that you have the best mic voice on YT. It sound´s fat and rich, tube like and with supreme gear after the mic & a person who knows how to put the potis in the right position (you). Best regards.
Your technical expertise is super awesome! The quality of your work is exemplary. Your tone in your videos is pleasant and elegant. Your choice of projects are very interesting. It's obvious you are a seasoned electrical/electronics engineer. Your explanations of every project is always so informative and useful. Thanks for sharing your skills, knowledge, and most of all, your time. Kudos and have a great day!
The engineer who taught my radio engineering in school had a trick to test speakers out in the wild. If he came across a nice looking speaker at a swap meet or yard sale, he'd use a AA battery to make it "pop." I saw him do this several times and you can really gain a lot of useful info that way... You can hear if the speaker has a wide range of frequencies if the pop is low enough and the scratch gives you a good idea of how good the high end is. If it rattles, put it back! :)
Yes the small battery test is great but if you don’t have one you can just loosely short the speaker terminals and gently push on the cone. Works best for speakers that have alot of travel and compliance.
Hi Paul, We really appreciate your great videos!!! However, for those who do not want to spend thousands of dollars on a sand blaster cabinet, serious air pump, and all the extras (air hose and manifolds) that your have installed (or have the room for such equipment), I have been applying another approach to restore metal speakers. One can use "Jasco Professional Paint and Epoxy Remover" paint remover and "Loctight Navel Jelly" to remove rust, and finally, variable-grit wet sand paper to make the metal surface perfect for painting. In a manner similar to your air handling concerns, one only needs to use these products in a well ventilated work area. I have successfully completed many, many metal surface restorations with this approach. Give it a try!
I like to put the speaker inside a plastic bag before installation. It keeps out dust, sounds better, and makes the speaker waterproof. Thanks from Portugal.
That's a nice shop, Paul. They're only new once, so enjoy. I see a metal-working bench lathe. You might consider a short video showing it sometime in the future.. Thanks.
Very nice and informative video as always - I kinda missed a little audio test of your favourite test speaker, maybe with you favourite amplifier 😊 Greetings from Germany!
I was having fun with electronics at a tender age and hooked up a small speaker much like this design to my clock radio. The paper cone was brittle, so I sprayed it with a couple coats of automotive rubber under-coating and it sure sounded nice and gave it some extra durability. I think I was 12 at the time ;-)
6:00 A friend of mine who worked at a car parts dealer and did some quick service work there, like checking tire pressures, did just that. After inflating a set of tires he disconnected the hose from the air system (it wasn't even "big" like that), and he said it made a rather loud noise, after which his ears rang for a couple days. Luckily no apparent permanent damage though. He said that was an instant reminder why he should have bled the hose through the regulator and the tubeless clip first, as advised in the training.
Lol, I know exactly how you know about uncoupling long compressed air hoses and the dangers they can produce. In my shop, I have hard airlines to distribute the air to the necessary areas. Each branch has a shut off at the connection point so that I can shut down the air supply and disconnect the flexible hose safely. Keeps the length of hose I use down as well.
Back in the 80's , I used to buy and restore D-104 Mic's ........ I would use a crinkle type paint and a clear coat on some of them ..... Others I would use a stone type paint and clear coat after the stone paint set up ..... The clear coat would harden up the stone layer .... I only did that on the bases of the D-104's , not the stems or the top side .... I love the crinkle and Hammer tone paints .....
Good video. Just a suggestion, go to a glass shop and have them cut you a new window for your blasting cabinet using the same glass that is used in scanners at the grocery store (sorry I forgot the exact name of that glass, but a glass shop can get it). It is extremely abrasion resistant glass and eliminates the need for the plastic shielding and tape and adhesive and mess. The window in my blaster is three years old now and looks like new with no plastic shield being used.
As many years as I've used a sandblaster, watched people use one, and saw videos of restos, I don't don't think I've ever had anyone describe the machine and safety procedures. Interesting! I hope some of the resto videos on here would reference this video in the future! I'm going to bookmark this video and comment the link in some videos, this was a wonderful idea for a video, Thanks Mr. Carlson
Happy day, A David's Radio repair and a Mr. Carlson video! 3:23 Wow, that is one tidy shop. The Charcoal paint you used, I also like to use on anything metal it covers well and looks great, Sometimes I will use copper and dark Bronze and lightly spackle spray them on top of the Charcoal just to give it color and texture.
@@TheoSmith249 I'm sure the Slipstream paint could look good and work as well, although, the paint Mr. C used is a Rust-Oleum branded product called Universal Advance, it's a metallic paint line in which the paint and primer are in one spray can
23:42 You can see on the Speaker , that Paul is using, threaded holes (above solder terminals) for mounting a 70V Matching transformer to the speaker’s metal frame. That would be used in a Public Address system configuration (schools, warehouses, factories).
I use that same paint, I love that finish. I was doing a restoration on a 1950s kitchen that had a period-appropriate wall-mounted venting fan, and that poor thing - who knows what it was originally, but it had so many layers of paint on it it's hard to describe. Once I got it down to bare metal I used the bronze hammertone with a bunch of thin coats and it came out just looking beautiful - so much better than I expected, honestly. I was just hoping for presentable, really. (The blades were fine and the motor hardly needed anything at all other than a good cleaning and some basic maintenance. Only thing I had to replace was the switch. Sometimes the ugliest parts of a job will really surprise you in a good way, you know?)
I'd like to know a bit more about the compressor too - love the way the lights flick when it kicks in. What sort of mains supply does it have; I'm in the UK so something like that would probably be on a three phase 400V supply (previously known as 415V before our voltage tolerances were "rounded down").
I am so, so very fascinated by this new shop view! I would love more videos like this, because I have neither the budget nor the space to have a shop of my own. It looks very clean, and it has this pleasant aesthetic to it. Nice cabinets, by the way.
Since there are so many things you can blast with besides glass beads or sand, I've always liked the term "media blaster". It applies to whatever media you're using
Nice shop. Don't for get a good air dryer. Valve off the bottom of your compressor tank for water drain off. Never use the glass beads twice. I had the same exact speaker. Came out of a junk TV when i was 12 years old. A bare speaker wire hit ground . Blew the speaker coil up. To young to know what i did. Another lesson in the school of hard knocks. I am 66 years old and after 54 years i still miss that dam speaker that had such a great sound. Thanks for the memories. Best Regards Jack Hreha.
To learn electronics in a very different and effective way, and gain access to Mr Carlson's personal designs and inventions, visit the Mr Carlson's Lab Patreon page here: www.patreon.com/MrCarlsonsLab
Do not forget that on some older products its best to check the paint for lead because you don't want that hanging around in your bead blaster and hearing protection while in the shop is also a good idea because a typical compressor runs at about 180 -190 decibels and most hand tools at about 150, Might want to check the machines in your shop to see how loud they are because it would do you no good if your hearing went bad especially working with radios and repairing them.
Great metallic resonate sounds with that speaker !! Lol 😆
@@someperson4819 Wife won't let Me wear them(or kilts).
It is nice to see the mechanical side of the shop come together. You are so correct about air hoses and the pressure in them. I am now retired but I worked Aerospace for 37 plus years and have connected and disconnected a whole lot of air hoses. When McDonnell Douglas (later Boeing after the merger) installed air hoses with built in bleed valves (you pulled the ring back and the nipple would rotate about 30 degrees to the side and would release any pressure) I felt like the company got "Wussy" because real men just uncouple an air hose and hold it against the pressure. Well I came to really liked the new couplers as it also made connecting a device to a pressurized air line so much easier. Connect to the coupler with no pressure and rotate the fitting into alignment to pressurize. Small hoses were not a big deal but the bigger air lines ... it sure made a difference. I also favor the dark grey/black hammer tone paint over the lighter colors. The speaker came out very nice. I think I remember a video you did where you used a roller over wet paint to get a similar effect, that project came out nice as well. I am proud to have been supporting you at your highest level on Patreon for years. A good teacher is worth their wages!
@@ProfaneGod I don't think so. How about 90 db @ nine feet; always include a distance.
Your facial expression when you say "Don't ask me how I know" has already made this one of my top favorite Mr Carlson's Lab videos.
like when the 9 fingered wood shop teacher talks about table saw safety
Why do I like this guy so much?Well...He just does such a fantastic job at every damn thing he does.Thanks Mr. Carlson for another enjoyable session.
I learn from him. He shares his knowledge. Great teacher.
That shop is CLEAN!
Thank you very much sir.
Any time!
Mr Carlson is the Standard of The World.
The shop sounds like a shop through my 65' Silvertone 3-ways.
Reminds me of elementary school and looking at the same classroom speaker housings some 62 years ago. Thanks for the memories Mr. Carlson.
I came to see an old speaker, left with an increased knowledge of how to safely work with compressed air, and abrasive cleaning. Thank you
best audio on youtube
Best thing I ever did with my garage was take the compressor out. Built a small well-insulated utility building in back that houses some plumbing for the infloor heat, compressor, etc. Nice shop!
Mr. C. Thanks ! This was little different project. ......Have you finished the 3-point antenna ?.....Where is the Firebird.....Let's see. What else can I bug you about.....No, Just kidding.....Once again. Thanks for taking the time to put these video's together.........Rick. McMurray, PA.
Never seen a shop that clean and organized lol.
I came across a suggestion on another TH-cam Channel and it sounded very good to me. Mount LED strips in the top, inside of the glass bead cabinet to illuminate your work brightly, evenly, and efficiently. You could probably find someone who could wire them up for you. You know I am NOT serious! I am reminded of that generator you worked on. Mr. Carlson is NOT limited to just radios and audio. :-)
I know nothing about electronics, other than out professor cursorily explaining R, C and L when taking a differential equations class. However I am hooked on these videos even though I don't understand much of it. It must be the microphone, the best sounding channel on TH-cam!
One thing that would be cool to see is a back to back comparison of a tube vs solid state preamplification. In a sense, what would happen if we feed the same signal to a solid state device vs a tube device, complete with vintage oscilloscope images!
Thanks from Texas Mr. Carlson
Fantastic shop and restoration.
You make everything instructive and interesting Paul, which is why you are the only person I support on Patereon. But I am beginning to miss the more instructive and in depth videos you used to make, like the one you did of the avalanche effect and time domain reflectometry, or the wobulator, or the in depth look at switch mode power supplies, or the innards of vintage tektronix equipment. That's what made you so interesting and unique. While this lighter content is still interesting, I'd love to see more of the design and improvement you used to do. You have an Aladdin's cave of vintage equipment, and an extraordinary breadth and depth of knowledge and understanding. An hour of you is never too long! Please, can we have more of that?
I find that speaker and it's casing quite attractive to be honest. This is how they looked when I was a wee lad. That's a nice shop you got there btw.
Nice work Paul, that hammer finish is great for hiding imperfections in the substrate.
Thanks Dave. Yes that paint is great stuff, and now comes in copper color too. I will have to try that on some old copper plated chassis that look rough.
I love that "It just sounds so good" is enough to even make Mr. Carlson himself do something unorthodox!
I have very limited knowledge in electronics, however I do fountain pen restoration as a hobby. The similarities are patience, innovative alternative parts & tools. Applying logic & common sense.
I recall speakers like this used in schools. The frequencies reproduced were excellent via the tube amplifier. You knew that the bass would be good as the 60 cycle bled through nicely!
I remember those speakers in my high school class rooms ...
I'm amazed at how spacious your air compressor / bead blaster shop is. In most of the shops I've seen those things are shoved into the darkest corner.
Hi Paul - You certainly have some top-class gear in the Labs & W-Shop. Years back in the disco industry I had a lot of fun coloring hammertone paint for the right effect on the equipment & the color organ lighting housings + other gear. Thanks for this ditty on how you tackle the simple stuff, enjoyed. Cheers, Tony in S-Africa...
Another fascinating video Paul. Thank you!
24:08 Beautiful. That's my favorite shade of gray.
Love the jacket! I have one just like it. I have a 60 gallon compressor and my HF glass bead cabinet is permanently connected to the air line through 3/4 inch copper line with a shut off valve.
I've done a bit of car restoration, drive-in speaker restoration and the glass bead cabinet is extremely useful. Also done a lot of painting and powder coating. Current projects are a couple of 3 slot Northern Electric payphones.
Neat projects George!
Hi Paul. If you haven’t already, buy an Air Fuse device and install it ahead of the air line. There are different types dependent on CFM and pressure. This device will shut off air to the hose if there is a breech of the line. If the Air Fuse senses no resistance in the line, it will shut off air to the line. This is just another safety device that’s good to have. Great job on the shop!
This is the sort of man you could trust with any job and know that job will be exceptionally done, I mean, the lab is fantastic but look at this workshop, it is more like a surgery room in a hospital. Immaculate and a place for everything and everything in its place. It’s a joy to see folks who still maintain the highest of standards!
love the speaker, paper cones are my favorite... i'd put a mesh or speaker cloth behind that grill just to protect the cone and maybe create a nice color contrast..
New shop looks great. I put my noisy compressor in a Rubbermade garden shed outside, They are molded double wall plastic and suppress the noise reasonably well. They go together easily and look good in a residential setting. It is less work and less expensive than building something from scratch. As you know I'm in Ontario the compressor seems to handle the cold just fine. I can just barely hear it run. The utilization is low but under power all the time. You should put an auto drain valve on the tank. I need to drain the tank and two cylinder intercoolers. I also have my 3 phase rotary convertor in the shed too. I don't have to listen to that either I wired the shop with 4 pin plus ground Hubbel twist lock connectors. I use the 4th pin and gnd to turn on the rotary convertor so any machine that needs it can turn on the convertor. Starting the rotary convertor and lathe or mill spindles simultaneously works fine. I had my doubts but it is just fine. Put a big indicator light on the convertor so you can tell if it is on. Good luck with your magnificent new facility.
Thanks for your thoughts John!
I guess it would be remiss for me not to comment in this video!
Love your work Mr Carlson.
Beautiful shop! A comically large compressor & bead blaster and now we know you have a lathe we expect to see it used in some future videos :)
Bead blasters need a high volume of air to work well, which explains the compressor and hose sizes.
Another just ... Frick'n Fantastic video! I thought the 'shop' noises added that extra touch of feeling like being there with you! Thanks, Mr. Carlson. I can't tell you enough how much I love every one of your videos. You have that 'Radio Announcer' voice that sounds ... well yes, even better than the 'speaker' in this restoration 😉.
Thanks for your kind comment David!
Very nice work Paul! That little speaker looks 100 times better than it did and actually now resembles some of your older "Hammered" looking black test equipment. By the way I just wanted to say that was a great idea to give a few safety tips around the shop. I work in a 12 Bay shop and i see air hoses misused all the time. If we don't look after our ears and eyes now nobody else will. Great video!
Another great video, thanks Paul. Could do with a soft start on the compressor, saw the lights dim for a moment! :-)
Very nice, professor.
@6:45 yeah , used the smaller diameter hoses and we typically drop and unlatch..behind you - where it unleashes that energy on the ground. I have no experience with those larger hoses..thanks for the advice
Excellent video. We get to see one of your new labs in operation. The speaker enclosure reminds me of public school public address system speakers way back in the 60s.
Yay! finally the speaker will have a treat! :).... I'll watch this after work today... can't wait!!
Good job on the painting. May I suggest a "lazy Susan" turn table so that you can turn the what ever you're painting without picking it up. Another one is to place small angles under the object b eing painted so the the bottom will stick to the table's surface and no marks where it was resting on the table. Good job on the shop cleanup.
As a painter I agree
I'm so glad you give safety advice like you did about the air hose. Great information about speakers too. I'll add that you've got the cleanest workshops I've ever seen.
Watching glass bead blasting is unusually satisfying. I kept finding myself thinking " Yeah, yeah....get THAT spot ...ooooo yeah..."
Nice shop, somehow it reminds me of an aircraft hanger for small aircraft. Great advice on using these tools as well. 👊👊👊👊👊
I’ve got an old vintage Motorola speaker- I cannot even imagine how much audio traffic went through it….
Love that thing.
In most TH-cam videos, I'd be surprised that the Creator would take the time to fully set up the "entering the shop" shot instead of cutting straight to the business, but not on Mr. Carlson's Lab. I did truly feel like I was there in the shop with you, and the audio was, as always, perfect. What's the startup current on the compressor? It really dimmed your lights when you threw the disconnect!
All that shop needs is a car lift, a parts washer, tire mounter, wheel balancer, and an upstairs apartment for me to move into! 😄And with your antenna, I can probably receive my favorite late-night talk radio show on a dozen AM stations. I would have to move the drill press to the left slightly, so that I could move the workbench under the window to the left slightly, because the misalignment is triggering my usually-mild OCD.
Great safety tip on connecting/disconnecting air tools and hoses while pressurized. There have been a few times that I've launched an air chuck a few feet because I didn't have a tight grip on it while disconnecting. I've watched friends get hit by, or hit a car with, a hose connector that was under pressure while disconnecting. I've watched as people fight to connect a hose to another pressurized hose - the quick-connect fittings are actually quite easy, but only when you're not fighting 100+ psi.
I'm horrible at painting, but I found success in hanging pieces from a long bungee cord hooked to an eyelet in my garage ceiling.
Nice shop!
Thanks!
Wow! What a clean garage.. I recall seeing a similar speaker cabinet hanging at our old Kmart locations out in the Garden center and in the back areas..
A great look at your shop! It was so big AND clean! Mine is small and cluttered. But I get things done! I use that paint a lot. That speaker reminds me of when I was in Jr. High(now called middle school) I was a projectionist and we had an in-room projector on a cart and it had a speaker very similar to this one. Love from NW Colorado. Thanxz
Love the paint job...looks great!
I am really impressed with how quiet the blasting cabinet is...the vacuum was the loudest part :)
Nice job with that speaker screwdriver protection device! Looks like the shop is looking awesome. Can't wait for some more videos from there.
Thanks for the restore of the speaker! Now, you can get that off your mind, haha. You have mentioned a few times, that you need to clean that speaker up! Great restore!
Very nice toy room and toys I am jealous.
Yeap....great improvement on the looks. Can't wait for the next one. Cheers
Nice! Nice shop!
Mr. Carlson, thank you again for your video and your work. I have nothing to do with electronics beside to watch other´s how they repair and explain the stuff. Love to watch your videos at night and I have also to admit that you have the best mic voice on YT. It sound´s fat and rich, tube like and with supreme gear after the mic & a person who knows how to put the potis in the right position (you). Best regards.
Your technical expertise is super awesome! The quality of your work is exemplary. Your tone in your videos is pleasant and elegant. Your choice of projects are very interesting. It's obvious you are a seasoned electrical/electronics engineer. Your explanations of every project is always so informative and useful. Thanks for sharing your skills, knowledge, and most of all, your time. Kudos and have a great day!
Thank you for your kind comment Antonio!
The MAGNUM "THING" looks like, You were about to research some MOON Rocks! Love Your video's!
The engineer who taught my radio engineering in school had a trick to test speakers out in the wild. If he came across a nice looking speaker at a swap meet or yard sale, he'd use a AA battery to make it "pop." I saw him do this several times and you can really gain a lot of useful info that way... You can hear if the speaker has a wide range of frequencies if the pop is low enough and the scratch gives you a good idea of how good the high end is. If it rattles, put it back! :)
Paul actually showed us this technique to test speaker polarity in his last radio restoration video :) More knowledge to stash in my toolbox
22:20 Spoke too soon lol
Yes the small battery test is great but if you don’t have one you can just loosely short the speaker terminals and gently push on the cone. Works best for speakers that have alot of travel and compliance.
Hi Paul, We really appreciate your great videos!!! However, for those who do not want to spend thousands of dollars on a sand blaster cabinet, serious air pump, and all the extras (air hose and manifolds) that your have installed (or have the room for such equipment), I have been applying another approach to restore metal speakers. One can use "Jasco Professional Paint and Epoxy Remover" paint remover and "Loctight Navel Jelly" to remove rust, and finally, variable-grit wet sand paper to make the metal surface perfect for painting. In a manner similar to your air handling concerns, one only needs to use these products in a well ventilated work area. I have successfully completed many, many metal surface restorations with this approach. Give it a try!
Thanks for your sharing…. I wanted you to know that it is very much appreciated!
My pleasure Jean!
I like to put the speaker inside a plastic bag before installation. It keeps out dust, sounds better, and makes the speaker waterproof. Thanks from Portugal.
I was waiting for this since you mentioned the need of a restorarion in other video.
Very nice.... a handle of some sort would be a worthwhile addition to a speaker so large. Love your stuff, carry on! 73 JC
That's a nice shop, Paul. They're only new once, so enjoy. I see a metal-working bench lathe. You might consider a short video showing it sometime in the future.. Thanks.
Nice job. Looks great. Bead blaster units are handy.
Very nice and informative video as always - I kinda missed a little audio test of your favourite test speaker, maybe with you favourite amplifier 😊 Greetings from Germany!
Another top notch video with full explanations and well done very professional and I think the best of all on You Tube #1 by far. My favorite
Thanks for your kind comment Mike!
Nice job.
You could put a little polyfill from an old pillow in there, just to deaden the standing waves inside.
I was having fun with electronics at a tender age and hooked up a small speaker much like this design to my clock radio. The paper cone was brittle, so I sprayed it with a couple coats of automotive rubber under-coating and it sure sounded nice and gave it some extra durability. I think I was 12 at the time ;-)
6:00 A friend of mine who worked at a car parts dealer and did some quick service work there, like checking tire pressures, did just that. After inflating a set of tires he disconnected the hose from the air system (it wasn't even "big" like that), and he said it made a rather loud noise, after which his ears rang for a couple days. Luckily no apparent permanent damage though. He said that was an instant reminder why he should have bled the hose through the regulator and the tubeless clip first, as advised in the training.
Love these kind of videos!
Amazing work as always 👍
Lol, I know exactly how you know about uncoupling long compressed air hoses and the dangers they can produce.
In my shop, I have hard airlines to distribute the air to the necessary areas. Each branch has a shut off at the connection point so that I can shut down the air supply and disconnect the flexible hose safely. Keeps the length of hose I use down as well.
Man thank you for this video. I love speaker restorations.
My pleasure!
@@MrCarlsonsLab 😃
Great! Restoration work is very interesting
Ooooh, now I know what I want for my birthday :)
Back in the 80's , I used to buy and restore D-104 Mic's ........ I would use a crinkle type paint and a clear coat on some of them ..... Others I would use a stone type paint and clear coat after the stone paint set up ..... The clear coat would harden up the stone layer .... I only did that on the bases of the D-104's , not the stems or the top side .... I love the crinkle and Hammer tone paints .....
Good video. Just a suggestion, go to a glass shop and have them cut you a new window for your blasting cabinet using the same glass that is used in scanners at the grocery store (sorry I forgot the exact name of that glass, but a glass shop can get it). It is extremely abrasion resistant glass and eliminates the need for the plastic shielding and tape and adhesive and mess. The window in my blaster is three years old now and looks like new with no plastic shield being used.
I will look into that. Thanks!
As many years as I've used a sandblaster, watched people use one, and saw videos of restos, I don't don't think I've ever had anyone describe the machine and safety procedures. Interesting! I hope some of the resto videos on here would reference this video in the future! I'm going to bookmark this video and comment the link in some videos, this was a wonderful idea for a video, Thanks Mr. Carlson
Thank you, I was just looking in how to find the polarity of a ham speaker. Thank you
Glad I could help!
Great place for kids to play around 😎
Great episode, very informative. And a very nice shop you have there. Thanks for sharing!
Thanks for the tutorial, how timely. Now I can assemble my cabinet, I purchased last fall, and use it safely. 👍
Great video and nice shop! besides using a respirator... eye protection and ear plus are advisable as well.
Happy day, A David's Radio repair and a Mr. Carlson video! 3:23 Wow, that is one tidy shop. The Charcoal paint you used, I also like to use on anything metal it covers well and looks great, Sometimes I will use copper and dark Bronze and lightly spackle spray them on top of the Charcoal just to give it color and texture.
The paint type he used, slipstreams from AkzoNobels Hammertite. Its a great paint and look .
@@TheoSmith249 I'm sure the Slipstream paint could look good and work as well, although, the paint Mr. C used is a Rust-Oleum branded product called Universal Advance, it's a metallic paint line in which the paint and primer are in one spray can
Beautiful! Looks like we went back in time to take it out of the box!
Thanks for this video! I always wondered how to effectively remove paint and refinish. This gives me confidence 💯
23:42 You can see on the Speaker , that Paul is using, threaded holes (above solder terminals) for mounting a 70V Matching transformer to the speaker’s metal frame.
That would be used in a Public Address system configuration (schools, warehouses, factories).
Interesting little tidbit! Thank you!
I use that same paint, I love that finish. I was doing a restoration on a 1950s kitchen that had a period-appropriate wall-mounted venting fan, and that poor thing - who knows what it was originally, but it had so many layers of paint on it it's hard to describe. Once I got it down to bare metal I used the bronze hammertone with a bunch of thin coats and it came out just looking beautiful - so much better than I expected, honestly. I was just hoping for presentable, really.
(The blades were fine and the motor hardly needed anything at all other than a good cleaning and some basic maintenance. Only thing I had to replace was the switch. Sometimes the ugliest parts of a job will really surprise you in a good way, you know?)
Thanks for sharing your story!
God you truly are the jack of all trades huh!!! Nice shop
looks great. i probably would have done the speaker grill a different color, but to each their own
Another interesting video thank you
That speaker reminds me of the one's up on the wall over the chalkboard in my high school classrooms. back in 1982 to 1986. giving my age away here.
Mr Carlson your speaker is cool
Thanks!
Loved the shop breakdown. Care to speak a bit more of the compressor maintenance? Bleeding of air and water, pressure regulation, etc?
I'd like to know a bit more about the compressor too - love the way the lights flick when it kicks in. What sort of mains supply does it have; I'm in the UK so something like that would probably be on a three phase 400V supply (previously known as 415V before our voltage tolerances were "rounded down").
I am so, so very fascinated by this new shop view! I would love more videos like this, because I have neither the budget nor the space to have a shop of my own. It looks very clean, and it has this pleasant aesthetic to it. Nice cabinets, by the way.
Since there are so many things you can blast with besides glass beads or sand, I've always liked the term "media blaster". It applies to whatever media you're using
This was another great video. Nice work environment.
Thanks again!
Nice shop. Don't for get a good air dryer. Valve off the bottom of your compressor tank for water drain off. Never use the glass beads twice. I had the same exact speaker. Came out of a junk TV when i was 12 years old. A bare speaker wire hit ground . Blew the speaker coil up. To young to know what i did. Another lesson in the school of hard knocks. I am 66 years old and after 54 years i still miss that dam speaker that had such a great sound. Thanks for the memories. Best Regards Jack Hreha.