Baldwin organ tube amp

[Sean Hughes]

Ok well first off let me say thank you to all and any who can help me achieve my goal . I have very little tube audio background I've worked in the neon light industry for about 8 years now and am no stranger to high voltages but I've never been shown how tubes do what they do . I love home audio and have a small 32 track digital studio in my home I've used tube guitar apps for years and love the sound and remember my father having tube Amos for his stereo . The sound was always so rich . I want that . Basically I'd love a 20 to 50 watt tube amp setup that I can integrate with my current system I have a pioneer sx1980 as my main amp , a marantz 2230 and a crown 2400 for my subs . Could anyone help me with this conversion of this amp r

 

[gadget73]

if I'm not mistaken, this is not a 2 channel amp. Or at least it doesn't look like it would be 2 identical channels. if you want stereo sound, you'd probably need two of these. Happen to have a model number to confirm that though?

 

[trobbins]

Yeh, you have to do some homework on what you have, which hopefully will end up identifying a schematic diagram, and maybe a few forum threads on any restoration or conversion projects using that organ equipment. It will be a tough start for you if you can't locate a schematic, as you are new to amp circuits, and advise flows easier if there is a schematic for others to look at. You will also need basic 'amp' tools like a DVM and soldering iron. You can use your audio gear for simple testing as source input and speaker outputs, but if you want any measure of distortion or other gremlins that may lurk unnoticed then there are many options that could suit you - including just a plain old PC and soundcard and some custom connections.

 

[Sean Hughes]

Yeh, you have to do some homework on what you have, which hopefully will end up identifying a schematic diagram, and maybe a few forum threads on any restoration or conversion projects using that organ equipment. It will be a tough start for you if you can't locate a schematic, as you are new to amp circuits, and advise flows easier if there is a schematic for others to look at. You will also need basic 'amp' tools like a DVM and soldering iron. You can use your audio gear for simple testing as source input and speaker outputs, but if you want any measure of distortion or other gremlins that may lurk unnoticed then there are many options that could suit you - including just a plain old PC and soundcard and some custom connections.

I've got multimeter I also worked for Raytheon years ago soldering is not a problem

 

[Sean Hughes]

if I'm not mistaken, this is not a 2 channel amp. Or at least it doesn't look like it would be 2 identical channels. if you want stereo sound, you'd probably need two of these. Happen to have a model number to confirm that though?

No model number as a matter of fact there is not much for markings on this at all

 

[trobbins]

Do you know which Baldwin organ it came out of?
There is an organ forum that may be able to assist if you have photos (your photos in post 1 are a bit minimal).
Have you googled Baldwin organ amplifier and looked through all the photos?

 

[Sean Hughes]

I've got all kinds of audio transformers

Do you know which Baldwin organ it came out of?
There is an organ forum that may be able to assist if you have photos (your photos in post 1 are a bit minimal).
Have you googled Baldwin organ amplifier and looked through all the photos?

 

[Andyman]

You might be best served gutting the chassis for parts into a new one more apprpriate for stereo.

The power transformer, 6BQ5s, 12AX7s, probably all are decent and the old sockets can also be repurposed, as could the rectifier. I'm not a designer, but the output transformer might be not optimal for stereo and hard to match, so new iron there might be needed. That being said, lots of amps sport Hammond iron, so maybe it is fine.

Get a new chassis blank after you find and lay out a circuit, drill it out and have at it.

 

[trainbuftony]

I'd say you've got a good start to a mono system. If you want stereo, you will need to source another transformer and some more power tubes. Another option would be to build a smaller amp using 2 6Bq5s in pp instead of 4 in ppp per channel. You could also search the internet and buy another just like it, then restore them into monoblocks.