mreiner Posted March 19, 2003 Share Posted March 19, 2003 I picked up a hammond a-122 from a church yesterday for free. only problem is that it is missing its amp. how would i go about running it through an external guitar amp or something. any ideas? Link to comment Share on other sites More sharing options...
coyote Posted March 19, 2003 Share Posted March 19, 2003 First off - good score! Please give a bit more detail. Is it missing the power amp, the reverb amp, the preamp, or any combination of the above? If it has the preamp, that's all you need. There are what's called 'G-G' terminals on it - you would simply hook up the tip of a 1/4" jack to one of those terminals and the ring to the associated ground terminal. Refer to the pics at: http://www.theatreorgans.com/hammond/faq/hammond-pictures.html and provide more detail as to what you still have in the organ. I used to think I was Libertarian. Until I saw their platform; now I know I'm no more Libertarian than I am RepubliCrat or neoCON or Liberal or Socialist. This ain't no track meet; this is football. Link to comment Share on other sites More sharing options...
mreiner Posted March 19, 2003 Author Share Posted March 19, 2003 by some of the pictures on your site it appears im missing all amplification....heres a link to the back of what ive got. Ive got speakers that came with it, just not attached. http://www.tophatrecords.com/organ Link to comment Share on other sites More sharing options...
coyote Posted March 19, 2003 Share Posted March 19, 2003 Yes, you are mising all amplification. You'll need to get either the AO28 preamp (for B3/C3) or the AO29 which originally came with the organ. There might be other ways to do this that I'm not aware of. I used to think I was Libertarian. Until I saw their platform; now I know I'm no more Libertarian than I am RepubliCrat or neoCON or Liberal or Socialist. This ain't no track meet; this is football. Link to comment Share on other sites More sharing options...
B3Nut Posted March 19, 2003 Share Posted March 19, 2003 AO-28. The AO-29 was used in the M-3 and M-100 series spinets. A-1xx used the AO-28 as they have a separate power amplifier and reverb amplifier for the internal speakers. I wonder why the preamp, power amp, and reverb amp are missing... Bob Schleicher at www.tonewheel.com often has plenty of AO-28 preamps, he used to get around $150 for them last I asked. Also, an AO-28 from a B-3 or C-3 will need to have its expression capacitor wires switched so the expression pedal will work correctly, since in the A-100's the preamp was mounted upside down and the pedal turns the shaft in the opposite direction. I'd like to see what else is missing out of that organ...have you taken the tone generator cover off yet? TP --- Todd A. Phipps "...no, I'm not a Hammondoholic...I can stop anytime..." http://www.facebook.com/b3nut ** http://www.blueolives.com Link to comment Share on other sites More sharing options...
mreiner Posted March 19, 2003 Author Share Posted March 19, 2003 No i dont think i have. Tell me where to look and Ill post up pics for you. Im curious as to why those were missing as well. I think the church had it rigged through a seperate system. Im just not sure of specifically how. So basically Id have to purchase a a028 ? Would i also need the reverb unit or not? If its only $150 for the ao28 to get it running i suppose that might be worth it. Get back at me with where those other components are and I'll throw up some pics. Thanks again. Link to comment Share on other sites More sharing options...
B3Nut Posted March 19, 2003 Share Posted March 19, 2003 Take the cover out of the upper compartment. That covers the tone generator and conceals other components (vibrato delay line, motors, matching transformer can, etc.) and I'm curious as to whether those are missing. If ev erything else is there you can get away with just the AO-28 if you're going to run through a Leslie or other external tone equipment. Power wiring will need to be reconfigured however, as the A-100 series had its AC input on the power amplifier chassis on the bottom shelf of the organ. Many players do jettison the power amp, reverb amp, and speakers from their A-100's to lighten them up a bit for gigging as they make great gig organs. TP --- Todd A. Phipps "...no, I'm not a Hammondoholic...I can stop anytime..." http://www.facebook.com/b3nut ** http://www.blueolives.com Link to comment Share on other sites More sharing options...
mreiner Posted March 20, 2003 Author Share Posted March 20, 2003 http://www.tophatrecords.com/001.jpghttp://www.tophatrecords.com/002.jpghttp://www.tophatrecords.com/003.jpghttp://www.tophatrecords.com/004.jpgtheres just about everything...what do you think...worth the investment and work? Link to comment Share on other sites More sharing options...
B3Nut Posted March 20, 2003 Share Posted March 20, 2003 You'll need the AO-28 for sure. Everything else is there mostly, though obtaining the original power amplifier would make reconnecting the power wiring handier. It may well be worth your time to hire an organ technician to install the AO28 and wire up an outlet box for you. It's definitely worth fixing back up. This box is a mid-64 to 65 box. Red mylar caps on the vibrato line (and also on the tone generator). "Red-cap" organs are really bright and punchy. It'll almost without question need a busbar cleaning, too, since this vintage had the round gold busrods that tarnish easily. Fortunately, the round gold ones are by far the easiest to remove and reinsert...the earlier rectangular busbars have given birth to more new strings of expletives.... TP --- Todd A. Phipps "...no, I'm not a Hammondoholic...I can stop anytime..." http://www.facebook.com/b3nut ** http://www.blueolives.com Link to comment Share on other sites More sharing options...
Dave The Rave Posted March 20, 2003 Share Posted March 20, 2003 WoW!!! Nice find mreiner. A Hammond organ for the price of collecting it, adding an amp and maybe cleaning the busbars! I'm jealous. How come I never see bargains like that round here? DTR Cambrian Guitars Link to comment Share on other sites More sharing options...
MisterBlue Posted March 20, 2003 Share Posted March 20, 2003 DTR, ... you've gotta go to church more often . MisterBlue. Link to comment Share on other sites More sharing options...
Dave Horne Posted March 20, 2003 Share Posted March 20, 2003 Excellent! That organ really brings back memories. My friend in high school had a A-100 which looks a lot like what you have. I used to play that and wished I had a full sized Hammond. It wasn't too long after that my father bought a second hand B-3 (which is now very long gone). Good luck with it! ... I'm envious!!! No guitarists were harmed during the making of this message. In general, harmonic complexity is inversely proportional to the ratio between chording and non-chording instruments. Link to comment Share on other sites More sharing options...
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