Oh, Tony, please don't be so critical of yourself! You're a wonderful person and a fantastic tech. We all have learned so much from you, for which I'm myself forever grateful! The fact that you don't script your videos only makes them better.
Totally agree! Tony, your videos have reawakened my interest in electronics and I'm currently working through a stack of four old Pioneer amps. I am having such a good time thinking about the best way to do things, as well as spin-off projects such as building a nice PCB and enclosure for transistor matching (Wheatstone bridge method). Seriously - I am most grateful to you for passing on your knowledge and enthusiasm.
I will be blunt. You are far more entertaining and educational that most things on broadcast or cable TV. I would guess that you could make a video on vogon poetry entertaining.
If you want to find out how to properly overhaul and restore electrical equipment, this is the channel to watch. A true professional at work. Thanks Tony for all of the fun! 👌👍😃
Wonderful job. Congratulations. I own a Marantz 500, the bigger brother of the Marantz 250. I bought the device in a non-functional state, and had the necessary repairs done, including the meters. However the meters still don't work as they should. In the future if I decide to do some work on it again, I will use your video as a reference. Thanks. Take care
Replacing those meters is the definition of ‘pains-taking’ work. Pretty creative solution which depends on large part on the skill of the one doing the work. Great job, Tony B. Great tutorial on the use of meters in audio circuits.
Tony, your videos are Awesome. Keep doing what you’re doing. Thank you for your time and effort. I really appreciate it. I vote yes on the scope video.
You are a great youtuber - it is exactly because it is not scripted and with some mistakes that your videos are so great - it reflects my repair reality. you inspire me a bit more with every video you share! by the way I love the 576 in back, sorry I had to say it again 😀. but now I have one too😁
I can speak for myself in saying how much I enjoy your work. I have learned alot from your video's and also enjoy how you present yourself to the youtube world. There have been others that I have followed and watched and slowly they have faded away and only posted once every six months or possibly even a year later or just disappeared completely. Sad for me because of the things I learn and also the enjoyment of watching good content! I wish also you had a Pioneer Spec 2 to work on to go along with the Spec 1 you restored awhile back. Thanks for what you post, Happy Holidays! Also nice work on those meters!
Very interesting and informative video, Tony. I particularly liked the information at the end, explaining the accuracy of these meters vs their aesthetics.
Nice conversion, glad it turned out so good. And, very good explanation on the meters reading voltage, converting it into power into loads not exactly showing nominal impedance at different frequencies!
Nice video, something else then always electronics, like mechanical/design like this is always interesting to see. The design of the Marantz 250 is also very nice, but if i was the owner, i swapped those 4 bolts from the frontpanel with socalled "nameplate screws". Nameplate screws have a cross head, with a washer behind, this washer is a little bit thicker then a normal washer, and have threads on the outside, where a domed cap screws on, that hides the cross head bolt behind. Useally used for mounting a nameplate to a facade of a house. These "nameplate screws" exist in gold (brass) color , black aluminium and silver (nickel/stainless) color.
That is very impressive work. Really well done. The value of the work done on that amplifier probably puts the real cost of it at about the retail value of a new Ford pickup truck.
The Eico 460 scope would be a nice video. That was the most common scope available cheaply in the 80s and 90s. I would assume there are plenty left and your video could be helpful to someone.
Hey Tony. Happy holidays to you and family. Always a fun watch in you postings. Btw am enjoying Xmas music with old married couple. As of lately added subwoofer to collection and … good😂thing don’t have neighbors close by or below. Don’t know if you’ve heard Roger Water’s “Dark Side of the Moon“. Track 4 is definitely a must do.
Tony, I like to say I give your blushing bride a lot of coudos for putting up with you doing this as a hobby. My wife would be yelling at me cause I am not around.
Wow! To think that someone in 1971 had this in their house!!!! We didn't even have a B&W TV yet at that point in time LoL.... Actually we didn't get anything remotely close to being called hi-fi until 1986! And they say that money doesn't bring happiness.... Truth be told, I would rather be crying while sitting in front of this Marantz system than the same situation in front of the mono single speaker boombox that we got some time in the mid to late 70's....
Nice Work Tony, I have had my battles with the 250 Meters and the 500 Meters. I have two Model 250 Marantz meters that also went south. Have the guts here. Is there anyway you could provide me with the location and part numbers of those meters you used in the Video of the 250 Marantz Meter Repair. I'd Shure like to have a go at your repair technique with the ones I have. I also have Vintage Test equipment. Love your shop layout. I can't throw anything away ..I'm helpless....L.O.L. I need to repair those meters or they'll just be stock in the pile of work like you have. Thanks. Also Excellent Video work and editing. Thanks: Mark
Dear Tony, as far as I and passionate about audio friends of mine are concerned, you might as well talk about the weather and we'd still be hooked on it.
I may have missed it in the video but what did you do about the resistance of each meter being different than the originals? or is it a situation where it doesn't matter because the meter responds regardless of its own resistance to the voltage?
@@erikdenhouter Yeah, me too. And I hope he eventually gets the link to the meter source from his customer. Sure would save some time finding this exact meter replacement.
Try these two: "TN-105-S0518" Pointer Vu Meter "TN-90" Pointer Vu Meter I see some that say 650 Ohm, so that seems different from the one used, and fits the original.
Tony, I thought that using a meter could burn out the meter movement. I have several meters that I need to find the resistance of the meter movement. Could you tell me if your meter is special?
It depends on the type of meter movement as well as the ohm meter you are using. The fluke has a 30 meg impedance, which limits the current quite a bit. When I tested this movement, it only caused the meter to deflect slightly. Analog meters, such as the Simpson 260 and the Triplett meters can deliver significant current, especially when they are in the X1 range. In addition, some of the high sensitivity meter movements have very thin wire in the windings. You really need to be careful testing them.
You will regret the use of packing tape; it will dry out, release and leave a nasty, dusty residue. I also repaired the meters on my McIntosh and tried using book tape thinking it would be more long lasting. It didn't hold very well (tape released,) so I am unsure what to use - Maybe Kapton tape?
Tony, I believe you are saying peak to peak, when you mean to say peak. RMS is 0.707 x the peak voltage (or 1/2 the pk-pk). Ergo 2.4V RMS is 3.4Vpk or 6.8Vpk-pk.
![ILLSLICK - KILLSHOT REMIX [FULL VERSION]](http://i.ytimg.com/vi/RIK8RrqIAzE/mqdefault.jpg)
![SAFEPLANET - ดาวเคราะห์ [ THE PLANET ]](http://i.ytimg.com/vi/4X1XL3I_k3c/mqdefault.jpg)
What a loverly result, it looks original and the meters move together without a difference.
Your fabrication ability is second to none.
Oh, Tony, please don't be so critical of yourself! You're a wonderful person and a fantastic tech. We all have learned so much from you, for which I'm myself forever grateful! The fact that you don't script your videos only makes them better.
Totally agree! Tony, your videos have reawakened my interest in electronics and I'm currently working through a stack of four old Pioneer amps. I am having such a good time thinking about the best way to do things, as well as spin-off projects such as building a nice PCB and enclosure for transistor matching (Wheatstone bridge method). Seriously - I am most grateful to you for passing on your knowledge and enthusiasm.
I will be blunt. You are far more entertaining and educational that most things on broadcast or cable TV. I would guess that you could make a video on vogon poetry entertaining.
"Vogon" ???
@@jdmccorful I guess you never read Douglas Adams book "Hitchhiker's Guide To The Galaxy" !
If you want to find out how to properly overhaul and restore electrical equipment, this is the channel to watch. A true professional at work. Thanks Tony for all of the fun! 👌👍😃
Thank you Tony, really enjoyed this series. I'm sure the owner will be more than happy to use this beast again.
No apologies Tony. We appreciate all what’s given in your videos. Merry Christmas to you and your family and your channel
Wonderful job. Congratulations. I own a Marantz 500, the bigger brother of the Marantz 250. I bought the device in a non-functional state, and had the necessary repairs done, including the meters. However the meters still don't work as they should. In the future if I decide to do some work on it again, I will use your video as a reference. Thanks. Take care
Replacing those meters is the definition of ‘pains-taking’ work. Pretty creative solution which depends on large part on the skill of the one doing the work. Great job, Tony B.
Great tutorial on the use of meters in audio circuits.
LOL, Tony..."I'm not going to perform surgery"...(proceeds to perform surgery)
As always, amazing work Tony, congrats!!!
Tony, your videos are Awesome. Keep doing what you’re doing. Thank you for your time and effort. I really appreciate it. I vote yes on the scope video.
Excelente Tony, muy buen trabajo...
Greetings from a midnight viewer in UK...Wow fantastic job.
You are a great youtuber - it is exactly because it is not scripted and with some mistakes that your videos are so great - it reflects my repair reality. you inspire me a bit more with every video you share!
by the way I love the 576 in back, sorry I had to say it again 😀. but now I have one too😁
I can speak for myself in saying how much I enjoy your work. I have learned alot from your video's and also enjoy how you present yourself to the youtube world. There have been others that I have followed and watched and slowly they have faded away and only posted once every six months or possibly even a year later or just disappeared completely. Sad for me because of the things I learn and also the enjoyment of watching good content! I wish also you had a Pioneer Spec 2 to work on to go along with the Spec 1 you restored awhile back. Thanks for what you post, Happy Holidays! Also nice work on those meters!
Very interesting and informative video, Tony. I particularly liked the information at the end, explaining the accuracy of these meters vs their aesthetics.
Hey Tony. I bought some like this from Ali Express. They have different kinds and combinations that can be used for various projects.
Impressive work Tony. Nice to see a matched pair of working meters that look original in a high end amplifier!
Nice conversion, glad it turned out so good. And, very good explanation on the meters reading voltage, converting it into power into loads not exactly showing nominal impedance at different frequencies!
Nice video, something else then always electronics, like mechanical/design like this is always interesting to see.
The design of the Marantz 250 is also very nice, but if i was the owner, i swapped those 4 bolts from the frontpanel with socalled "nameplate screws".
Nameplate screws have a cross head, with a washer behind, this washer is a little bit thicker then a normal washer, and have threads on the outside, where a domed cap screws on, that hides the cross head bolt behind. Useally used for mounting a nameplate to a facade of a house. These "nameplate screws" exist in gold (brass) color , black aluminium and silver (nickel/stainless) color.
Nice to see you back hope this kind of work is a stress relief we all need that!!!
That is very impressive work. Really well done. The value of the work done on that amplifier probably puts the real cost of it at about the retail value of a new Ford pickup truck.
Please do video on Eico 460 scope. I built one in kit format in 1958.
44:21 i.e. dB = 10log(P1/P2), so for full power output: +3dB = 10log(150/75) and 20dB = 10log(75/0.75), where the log is to base 10.
The Eico 460 scope would be a nice video. That was the most common scope available cheaply in the 80s and 90s. I would assume there are plenty left and your video could be helpful to someone.
This is the video I've been waiting for. Thank you xraytonyb!!!
bring the scope video on, those thing are awesome!
***** Highest rating as per usual. Thankyou once again.
Excellent work Tony!, "very impressive".
Thanks again.I get exactly what you mean.Merry Christmas to you and the whole family! Peace!
excellent video. please do the scope vid
I love your videos ! Keep up the great work
Nice retrofit. You didn't mention what type of lighting for meters, incandescent or LEDs
Hey Tony. Happy holidays to you and family. Always a fun watch in you postings. Btw am enjoying Xmas music with old married couple. As of lately added subwoofer to collection and … good😂thing don’t have neighbors close by or below. Don’t know if you’ve heard Roger Water’s “Dark Side of the Moon“. Track 4 is definitely a must do.
Good to hear from you! All the best to you and your family! Merry Christmas!
Best of Wishes for all here in the coming years!! Doc BC
Tony, I like to say I give your blushing bride a lot of coudos for putting up with you doing this as a hobby. My wife would be yelling at me cause I am not around.
Great work and wish you and your family Merry Christmas and Happy New Year.
Wow! To think that someone in 1971 had this in their house!!!!
We didn't even have a B&W TV yet at that point in time LoL....
Actually we didn't get anything remotely close to being called hi-fi until 1986! And they say that money doesn't bring happiness.... Truth be told, I would rather be crying while sitting in front of this Marantz system than the same situation in front of the mono single speaker boombox that we got some time in the mid to late 70's....
Loved the series on the Marantz 250. Are those little mod boards available?
I think I would have put the new movement into the old housing rather than the other way around. But all's well that ends well.
Great video, Tony. Subscribed.
Very nice work, sir!
Yes, please do the Eico video. Thanks!
Tony from the previous video where you pulled off those knobs were not those pliers actually jewelers ring holding pliers? What ever works is great!
It's an electronics channel. Post it! No one video will please everyone, but they'll all please someone.
Tony, I would love to see the EICO 460 oscilloscope video, whenever you can put it up.
Hi is there meter protection on the driver boards? there didn't seem to be anything on the original movement.
Rich
There is a reverse parallel diode network on the pc board.
Nice Work Tony, I have had my battles with the 250 Meters and the 500 Meters. I have two Model 250 Marantz meters that also went south. Have the guts here. Is there anyway you could provide me with the location and part numbers of those meters you used in the Video of the 250 Marantz Meter Repair. I'd Shure like to have a go at your repair technique with the ones I have. I also have Vintage Test equipment. Love your shop layout. I can't throw anything away ..I'm helpless....L.O.L. I need to repair those meters or they'll just be stock in the pile of work like you have. Thanks. Also Excellent Video work and editing. Thanks: Mark
Great video. If yah still have those original meters could send them to me I can try and repair them
Dear Tony, as far as I and passionate about audio friends of mine are concerned, you might as well talk about the weather and we'd still be hooked on it.
I may have missed it in the video but what did you do about the resistance of each meter being different than the originals?
or is it a situation where it doesn't matter because the meter responds regardless of its own resistance to the voltage?
I wonder too. The originals were 15x more resistance, but it still works....
@@erikdenhouter Yeah, me too. And I hope he eventually gets the link to the meter source from his customer. Sure would save some time finding this exact meter replacement.
Try these two:
"TN-105-S0518" Pointer Vu Meter
"TN-90" Pointer Vu Meter
I see some that say 650 Ohm, so that seems different from the one used, and fits the original.
@@erikdenhouter The "TN-90" search on Ebay shows these meters. :)
Nice meter reassignment..
Tony, I thought that using a meter could burn out the meter movement. I have several meters that I need to find the resistance of the meter movement. Could you tell me if your meter is special?
It depends on the type of meter movement as well as the ohm meter you are using. The fluke has a 30 meg impedance, which limits the current quite a bit. When I tested this movement, it only caused the meter to deflect slightly. Analog meters, such as the Simpson 260 and the Triplett meters can deliver significant current, especially when they are in the X1 range. In addition, some of the high sensitivity meter movements have very thin wire in the windings. You really need to be careful testing them.
Great work! What's that music called what you used to test the meters?
It's from the TH-cam Audio Library. The song's title is "Stranger Danger" by Francin Preve
would love to see the oszilloscope thing !!
You will regret the use of packing tape; it will dry out, release and leave a nasty, dusty residue. I also repaired the meters on my McIntosh and tried using book tape thinking it would be more long lasting. It didn't hold very well (tape released,) so I am unsure what to use - Maybe Kapton tape?
Tony, I believe you are saying peak to peak, when you mean to say peak. RMS is 0.707 x the peak voltage (or 1/2 the pk-pk). Ergo 2.4V RMS is 3.4Vpk or 6.8Vpk-pk.
You are absolutely correct. Thanks for catching the error!
Please do the Scope!
You said, "Guys, are you bored yet." I don't think you're sexist, but don't you think, there may be a few women watching this?
Boy, did you perfect that "YES DEAR"! BTW,excellent "How too" procedure for meter replacement. Enjoyed all of it, thanks for your time.
tonnesoftware - Meter can be used to design and print your own designs.