[Forrest] sent in his Hammonator Organ that he resurrected into a guitar amp. He re-used several of the original parts, and designed the amplifier around them. Tubes were chosen to fit the sockets, and the original transformer was adapted to run on the 120V usually found today.
this hack is totally useless without audio clips.
definitely a clever re-use of parts though.
Posted at 12:08 am on Jan 19th, 2008 by Dirk
woah, I have some hammond guts out in my garage and I was thinking about building a guitar amp from it for my brother-in-law… awesome!
Posted at 12:13 am on Jan 19th, 2008 by jkent
Very cool, only thing I’d say is that it’s rather low powered.
Posted at 4:15 am on Jan 19th, 2008 by TheKhakinator
Just make sure it’s not a Hammond B3. IMHO, one of the best sounding organs ever.
Posted at 11:46 am on Jan 19th, 2008 by mainfr4me
Nice. I have a Hammond AO35 reverb amp that I’m using for a similar project. As for being low powered, that’s exactly the point. Nice power tube saturation at a volume that doesn’t get the cops called on you.
Posted at 12:06 pm on Jan 19th, 2008 by mmon
Am I the only one that thinks he should replace the transformer on the left? I mean it’s starting to rust…
Posted at 12:55 pm on Jan 19th, 2008 by Elliott
@7: It’s clear you’re no audiophile; the rust deposits add a subtle but important inflection to the odd subharmonic cross-modulation which provides a clearer reproduction of the amplified audio source. It’s unfortunate that this hack uses Bakelite knobs, though, because the Bakelite causes a distal vibration when placed so close to the metal chassis. This completely offsets the rust’s inflective properties and degrades the entire listening experience.
It’s still an interesting hack, though, if only from an academic perspective. :-)
Posted at 3:22 pm on Jan 19th, 2008 by andrew
I found out that mine is an M-2, fyi
Posted at 11:19 pm on Jan 19th, 2008 by theblunderbuss
A few answers to the comments:
If you want to deafen yourself, the amp can easily be rebiased
to work with 6L6 tubes (approx. 35W). 18 watt amps start to
distort (desirable) at a non-deafening volume.
The transformer’s not rusty, that’s the paper. The chassis
*is* rusty, but much better than when I started the project.
I’ve scraped lots of rust off with a wire brush. The rust
gives it character, imho.
Posted at 2:40 pm on Jan 21st, 2008 by Forrest Cook
Funny, I did something similar with the power supply/amplifier section in an old Tube console set (Radio, Phono, amp) The circuit was in good shape so I built a control & input box for it. Now I can listen to CDs (in mono…) with warm 6V6 push-pull output.
Posted at 10:04 am on Jan 22nd, 2008 by Kaj
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I have an old Hammond right here.
I wonder how much the parts are worth to someone who wants to try this kind of hack?
Posted at 11:32 pm on Jan 18th, 2008 by theblunderbuss