I recently received a Hammond Reverberation amplifier and I am seeking information and a schematic for it. It has (2) 12AX7's (2) 6BQ5's and (1) 5y3 for tubes. I have done searches for the correct schematic and haven't found anything. It seems to pass a 1K sine wave into an 8 ohm load and get a whooping 3.72 volts out. I would have expected more.
Any help would be appreciated. It would be nice to find a second one just for kicks.
Joe
Any help would be appreciated. It would be nice to find a second one just for kicks.
Joe
Try this page:
http://theatreorgans.com/hammond/
or this newsgroup
alt.music.hammond-organ
IIRC, the reverb channel only went down to 1KHz or something
like that (you really can't hear reverb from a spring reverb
tank below a certain frequency) then went out through
a horn speaker. So the amp may not have much
response on the bottom end.
Useless trivia: Laurens Hammond invented and patented
the spring reverb.
http://theatreorgans.com/hammond/
or this newsgroup
alt.music.hammond-organ
IIRC, the reverb channel only went down to 1KHz or something
like that (you really can't hear reverb from a spring reverb
tank below a certain frequency) then went out through
a horn speaker. So the amp may not have much
response on the bottom end.
Useless trivia: Laurens Hammond invented and patented
the spring reverb.
Unfortunately the links don't have information on the unit I have. I do appreciate the help.
Thanks
Joe
Thanks
Joe
Try posting on alt.music.hammond-organ, or
any discussion forums you can find regarding
Hammonds.
I know some of the geezers who hang out at AMHO
have pretty close to an encyclopaedic memory of everything
Hammond ever made or did, some of them actually hung out
with the man himself. I'm sure one of them will remember
this unit and probably have a schematic as well.
any discussion forums you can find regarding
Hammonds.
I know some of the geezers who hang out at AMHO
have pretty close to an encyclopaedic memory of everything
Hammond ever made or did, some of them actually hung out
with the man himself. I'm sure one of them will remember
this unit and probably have a schematic as well.
Try this link. If he doesn't have it he knows who does. You will have to pay a nominal fee for a copy of the schematic. He finds, archives and sells schematics for a living.
http://www3.telus.net/public/vintage1/index.htm
http://www3.telus.net/public/vintage1/index.htm
Gavin
Thanks for the reply. After playing with it for several nights I have decided to scrap it and redo it to be a 12B4 amp with a 12B4 front end.
This would be something different and would give me roughly a 1.5 watt amp.
Joe
Thanks for the reply. After playing with it for several nights I have decided to scrap it and redo it to be a 12B4 amp with a 12B4 front end.
This would be something different and would give me roughly a 1.5 watt amp.
Joe
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