How to Re-Purpose Vintage Test equipment into 6AQ5 Push pull Tube Guitar Amp D-Lab boutique Part 1
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- เผยแพร่เมื่อ 27 มี.ค. 2020
- Here's some fun for you! Emi & I thought it was time to launch a new Re-Purposing series. This time, I convert an old General Radio 1390B Random noise generator into a cool Push pull 6AQ5 tube amplifier. As a special feature, Emi shot the scrapping portion of the video. I was out in the other room sipping wine. I had no idea of what she shot. I left it as is, since it was so natural. I loved her take on the task. Part two will consist of the wiring and initial testing. I will cover the power supply section first, then complete the amp circuit. When complete, I will post an updated schematic, since I am certain that there will be some component updates. I love doing these demos, especially when I am accompanied by my sweet grand daughter. She really generates rays of light in the shop. I hope you enjoy.
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Your Granddaughter
Will always remember these times nice terry.
I was going to volunteer to help D Lab during My free time,but I can see that Emi is the right person for the task , she is far more entertaining than I am.. Emi is a grand young lady!! she's funny! and intelligent to boot! cheers!!!! PS... Have Emi sign the amp , it may be a classic amp and will be worth more if the tech signs it!
The only electronics video my 5 year old was glued to. Thumbs up from the generation alpha crowd!
Emi is a star! Give her greetings from Florida. Great Job, loved it.
I like Mr. Carlson's Lab. He restores old test gear rather than turn it into guitar amplifiers.
Emi did a good job ! She is very smart. And good example Terry. All of us need to remember to help and encourage our kids and grandkids learn and explore.
Emi, the D-Lab Demo Expert. Nice job girl!
Those beautifull 6aq5 Sylvania Black Plates are real gems, you made the right choice by keeping them...
Checked the tubes, test as new! They will remain with the amp
@@d-labelectronics When you see the price they ask for a pair of NOS 6l6gc or el34 you are definitely smart to keep them, especially when you have equipments to test them...
I don't remember you talk about your NOS tubes stock, could you show us it one day??!
Terry your granddaughter made an informative video She must be great help.
Waiting with great anticipation for part 2! Thank you Terry
Just wanted to say thank you for your amazing channel... It's been a real joy to watch and learn from you. All the best to you and your wonderful family. Cheers!
Love Emi ! Was a joy to watch. Great video Terrry
Anyone ever notice EMI - Electro Magnetic Interference? Hehe 😉 I bet grandpa enjoys that! Great Job EMI!!!
What a riot Em's just fabulous mimicking gramps I couldn't stop laughing What a great episode God bless and stay safe Cheers from down under
That is the sweetest electronics video I've ever seen! You two are lucky to have each other. This gives me great hope for our future. Thank you guys :)
That was great Terry! Fun getting to see Emmy doing the tear down! Hope she had fun doing it! Love that you are giving that device a new purpose. Can’t wait to hear that baby roar!
"Maybe we could re-purpose this (whatever it is)..." Hahahahaha! Grandpa is history. Emi pwned the show. Now I wanna see an entire D-lab episode with only her on camera, obviously supervised by the old geezer off camera. That'd be a good opportunity to teach her rule number one of safety in any shop: no loose or dangling hair, clothing or jewelry. And always remember, smart people don't have heirs, they have successors. So you're in the right direction.
She keeps me alive/motivated
@@d-labelectronics She's a treasure. You're a lucky man.
All the power to you guys! That's some pretty cool bonding you guys have going on there. Heck, I remember having a blast, just building stuff with my grandfather when he was around... some of the best damn memories I have. Wish you guys a longtime to build much more stuff together and enjoy each other's company. Thanks for all the good stuff you've been sharing over the years.
Hello. From France. Congratulations for the young Assistant! I am thinking about sending her an apparatus some day to get it repaired! This is a very instructive video! Thanks to both of you!
Its really great that you are letting Emi do this work! Nothing like getting your hands dirty to learn!
That's going to be a really cool looking amp. Love these re-purposing videos.
The electronics are to difficult for me but I’m learning to be a granddad like you all the best from Belgium
This is so awesome. I hope to be this sort of grandparent in a few years.
God Bless and Protect you and your family!!! Thank you for sharing your wisdom with us and preserving our tube amp history!!!
Fun, ?Terry thanks for a great video, you n Brad make my day when the kids show up! We salute you from Lubbock!
That's brilliant, I'm looking forward to it, valve theory was a bit suppressed when germanium/silicon became the fashion, now its come full circle. I'm now making up for it. !
Good job Emy !!!
Terry, Bless you for giving the youth of the world a chance to get a real DIY education. I wish someone cared about teaching kids about tube guitar amp building when I was young. Terry, you are an honorable man and our hero!!! I will use your youth DIY tube amp building educational videos to teach my grand-kids when we have some:)
great video , EMI is a sharp cookie !!!!!!
Emi is becoming quite the u tube star.
Yes Sir, sure love seeing her in action.
Emmy is getting quicker witted! Watch out Terry!
One word...............PRICELESS !
Absolutely precious. I have a six year old Granddaughter that loves to do the same thing, the only problem is, she likes to take apart things that I want to keep. HiHi
I like this series. Repurposing is a cool way to build guitar amps.
Is the meter going to function in the amp? That would be cool too!
Be safer. Everyone please be safer!
Hello JJ, Yes Sir, The meter will tag off the speaker out jack, so it will respond to the notes played
@@d-labelectronics cool!
Its fist, best purpose was as a piece of test equipment. if you want a guitar amp build one from scratch or just buy one.
Can't wait to see the video on my Drake TR4 c Kevin.wb8dmx
What a little superstar!
Cute and capable!
Emi...the wine flavoured ice-lollies!! careful...
Emi is left handed but ole' grandpa gave her right handed wire cutters! LOL
Well that’s totally in-line. Noise generators are expensive - both old and new☺️ Btw. Amazing amount of filter capacitors for a noise generator
Lemmy will make a good tech, under your guidance, maybe teach her some guitar to do a demo after it is finished! We love Tony and others, but she would.be a good gee-tar picker with her long fingers! Man she has grown up fast! You are a good Grand Dad! This will be a Grrrrrrrrrreat! amp(Tony the Tiger). Thanxz
The OEM PT had adequate B+ and filament supply for the existing 2x 6aq5s....so was it lacking a B+ center tap or was the B+ too low??
I determined that the transformer only delivered approx 160vdc after rectified. Not enough for the amp conversion
D-lab Electronics that would be a good PT for a guitar preamp running 12ax7’s a bit starved for some distortion or something like that
@@d-labelectronics Could you have not used a voltage doubler for the B+ ?
yeah....need about twice 160dcv...a voltage doubler would have gotten the DCV B+ but then the DC B+ MA would prob drop by 1/2. Not just a good deal economically if you need to buy 2 new TXs tho.
That's how I learned.
I like your vidios Terry and Emi is as funny
Goofy as your are.
Sorry I interrupted your wine party..lol..she is hilarious.
Terry, good to see Emmy back in the lab. Question? Can you show us the part the generated the random noise? My guess is that thing thal looks like a tube inside of a plastic cylinder, full of warning signs. Is it radioactive? (to generate the random noise).
I am trying to convert an old 40's tube console into a guitar amp but the tone controls are ceramic like the ones in your video. Is it possible to convert them to pots while retaining the stalks and knobs? The stalks are long like the ones on the video. Thanks for any help. Your videos rock!
LOL, "You've got mail!" She has no idea what that is.
Shortwave girl💗
Still cuter than a bugs ear, I'll say. "Idiot light" Whots that? lol I have to agree with your description ^
...it's a HECK of a lot of easier taking that thing apart- than it was putting it together-!!!
Can you still get power cords for that type of mains connector? I have some old Tek kit using them but cannot find a supply anywhere. I loathe changing to IEC on vintage equipment.
Yes, Lucky I have one on hand
Looks like an extension cord might work
...ARE YOU RUNNING A CLIP JOINT?!!
EMMY CAN CUT IT- SHE'S PRETTY SHARP!!!
If a guy was to follow along with a similar RNG, do you have a parts list and schematic available? Just asking....got the covid house cramps. And the name of my new band.
I never thought of using a single triode as a phase inverter, I always used a dual triode ... learn something new
I enjoyed the video hope she take after you ,good work keep it up
I have to give this only 4 stars because she didn't hit you in the head with a hammer. 😂
Emmy telling bad Dad-jokes. That's what Terry has created. :-D
"Why don't you believe me?" "You're granpa!" LOL
Kinda reminds me of long ago stripping dead TV chassis for useable parts.
maybe emmy could learn to play guitar
Ohhhh the Humanity....!!!!
Why not use the full bridge? You had all 4 diodes already on the board?
Perhaps he didn't want or need the higher voltage of the full secondary? That's a 400vac CT secondary. A capacitor input filter with a bridge rectifier would give several hundred volts to the 6AQ5s & their Max Plate Voltage rating is oly 275v.
I think Emmy should have taken out the paper capacitors by the meter.
The entire board has been removed. Amp is built working super!
A wiggaly worm. LOL
why no just use the full bridge recto instead of just the 2 diode?
Since its older design it uses a center tap transformer with a full wave rectifier since diodes were expensive back in the day
A bridge rectifier would give nearly twice the 350v shown in the schematic from a centertap fullwave. The 6AQ5 Max Plate Voltage rating is only 275v.
Do you still build your plexi
Yes, need a few key parts but can be done
D-lab Electronics wanting to build one of Uncle Doug’s mystery amp that he made and posted schematic. Wondering how well the plexi control would be on it.
all of my guitar amps are "random noise generators" according to the wife
Oh that hurts, but 'cause so similar to what I have heard too: Why don't you ever believe me? {Long 'REALLY!' look} 'Cause you're grandpa!
Reuse the vu meter! That would be cool
Yes, it is working monitoring the speaker output
@@d-labelectronics oh nice! I've skipped a bit so sorry if you mentioned it.
Didn't know about the amplitude range and where it could be hooked up.
Can't wait to see it in action
Nice funny witty girl!
Maybe some Emmie sized tools are in order,
24:12...all it takes is a little patience-!!
Terry, I hate to tell you, Emi may only be an apprentice tech, but she's far more entertaining than you are.
...well, "ya can't please EVERYBODY!!"
Всем.привет.курс.юных.радиотехников.начидся
Somebody is not social isolating :-(
They're family. It's OK.
why do you ***** destroy perfectly fine test equipment to build a fucking guitar amp that you can get at a local music store ? Are you not ashamed of yourself ?
Ruining perfectly good equipment to satisfy insecure egos who don't understand that playing is about what you do, and not what you have. Despicable. The nice cross-generation interaction notwithstanding, this is vulture non-culture.