Hoffman Amplifiers Tube Amplifier Forum
Amp Stuff => Tube Amp Building - Tweaks - Repairs => Topic started by: ceeya68 on November 04, 2017, 12:55:41 pm
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How do I put a one tube spring reverb in this amp I have built? It's basically a marshall 2204 build. But you will notice I have made some modifications to it. I would like reverb in the chassis though if I can figure it out. I'm sure the topic has come up before. But I am not finding anything real clear or very useful on the forums. I would bet that someone has done it before me. So I'm here asking for help. I need pictures of a layout and a schematic. My brain works with pics and "PTP" wiring layout better than anything else. If any one can help that would be great. If you have any questions I would be happy to answer them if I can. Thanx in advance!!!!
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Chassis looks full. Where would you mount the extra tube, components and transformer?
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There's enough room on the back of the chassis to mount a small reverb transformer say like on BF Fender. And I can put a tube socket slightly under the board. Along with a couple of RCA jacks. "I think I can squeeze them in". I think there is enough room for a one tube reverb type thing in that chassis. The board components will have to be modified to another board. I kinda planned on building a whole new amp to achieve this reverb goal thing anyway. Thanx!!
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Take a look in the "Archives of favorite topics" forum. Lot's of info about adding a one tube reverb.
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IMHO, use a pedal or 6g15 type reverb. the extra circuitry would have a high probability of adding instability in tight confines.
--pete
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IMHO, use a pedal or 6g15 type reverb. the extra circuitry would have a high probability of adding instability in tight confines.
--pete
Thanx for the advice. I could do that (yea). No prob. But that's not what I am after. It's not gonna be that tight. Thiers room. All a man can do is give it a try and see what comes of it. Thanx! Though. Appreciate the chime in.
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Take a look in the "Archives of favorite topics" forum. Lot's of info about adding a one tube reverb.
I have been looking in their. I will have to spend some more time in their though, looking for info. I haven't seen anything real clear for my brain yet though. I was hoping for some new pics and layout diagram type thing. Anything you can offer would be much appreciated. Thanx!!!
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Most of the "one tube" reverb info in ARCHIVES is what I've placed in there. And I've installed one tube reverb in quite a few amps.
Having said that ...................
After looking at your chassis photo and layout, I personally would not attempt a one tube reverb in that chassis. I would be more like to install a passive effects loop between the tone stack and the entrance to the LTPI & then use a delay or reverb pedal in the passive effects loop.
Just my 2 cents worth. With respect, Tubenit
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Most of the "one tube" reverb info in ARCHIVES is what I've placed in there. And I've installed one tube reverb in quite a few amps.
Having said that ...................
After looking at your chassis photo and layout, I personally would not attempt a one tube reverb in that chassis. I would be more like to install a passive effects loop between the tone stack and the entrance to the LTPI & then use a delay or reverb pedal in the passive effects loop.
Just my 2 cents worth. With respect, Tubenit
Thanx!! Tubenit! Do you have any gut shot pictures of your one tube reverb circuit? I would like to see some in the amp pictures if you wouldn't mind to much. Thanx!!!
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IMHO, use a pedal or 6g15 type reverb. the extra circuitry would have a high probability of adding instability in tight confines.
--pete
What Pete was trying to say was putting a one tube reverb with the tube under the board in on a high gain amp might create a howling squeeling mess you cant fix . in other words instability. I don't have any pictures but tried it once had to remove it couldn't get it to quit squeeling at anything past 3 on the volume. But give it a try, I understand.
Sometimes for me that's how I learn the best.
With utmost respect.
Bill
{edit- untangled quote -- PRR}
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Thanx, TJ ! I've decided to put an effects loop in the amp that I first posted about. And I have decided to go with a much larger chassis for the amp build that I am Prepping for now. There is a lot more room for a spring reverb type build. I will have to post a pic a bit later of the chassis I plan to use. Thanx again!
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One of these? I've never used one but have read numerous positive reviews of them.
https://www.amazon.com/Metroamp-Zero-Loss-FX-Loop/dp/B01HFRR4XQ
With respect, Tubenit
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Mr. Merlin sell a small serie of multi purpose PCBs (price is really interesting)
one is this
(http://www.valvewizard.co.uk/fxlooppcb1.jpg)
http://www.valvewizard.co.uk/fxlooppcb.html (http://www.valvewizard.co.uk/fxlooppcb.html)
http://www.valvewizard.co.uk/shop.html (http://www.valvewizard.co.uk/shop.html)
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http://www.valvewizard.co.uk/universalpcbs.html (http://www.valvewizard.co.uk/universalpcbs.html)
Franco