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Post by ChrisB on Aug 12, 2015 8:12:32 GMT
It's an idle thought that I've harboured for years: Would a pair of valve amps stripped out of Hammond organs (I assume that they're mono) make a hi-fi amp worth owning?
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Post by Deleted on Aug 12, 2015 9:37:25 GMT
IIRC they are a little noisy, but it could be worth a go. Do you have two identical valve Hammonds, that you want to wreck? I would have thought that the price OLD hammonds go for, you would be better off restoring themselling them and buying a new pair of valve monoblocks  |
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Post by Stratmangler on Aug 12, 2015 10:30:53 GMT
Probably not.
The Hammond amplifiers are tone generators, in the same way that a guitar amplifier is.
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Post by Deleted on Aug 12, 2015 10:39:47 GMT
Probably not. The Hammond amplifiers are tone generators, in the same way that a guitar amplifier is. The idea behind the Hammond was that the pure tone of the tone wheels would be reproduce to represent a chuch pipe organ. The specific design brief of the originsl instrument was to sell to the huge USA church market. The tone colouration is not in the amps, which are pretty neutral but noisy, it's more in the way the signal is created by the keyboard and draw bar settings and then by the speaker. Even the Leslie amps, by themselves are just amps, the tone changing is done by the other bits. |
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Post by ChrisB on Aug 12, 2015 18:19:35 GMT
Thanks for the replies.
No, I don't have a load of old Hammonds lying around! I see them advertised occasionally (the amps) and I just wondered about them as hifi amps.
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Post by Deleted on Aug 13, 2015 0:17:13 GMT
I had a look at a few circuit diagrams.... definitely not hi fi. Surprisingly low power as well at 10 - 16 Watts depending on version, for the ones I saw anyway.
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Post by ChrisB on Aug 13, 2015 7:00:25 GMT
I thought there were some 40 watters?
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Post by Deleted on Aug 13, 2015 11:38:41 GMT
I thought there were some 40 watters? There may well be but the few I saw which were described as classic Hammond used 6v6 or EL84 output stages and so would have been low powered. |
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Post by MartinT on Aug 15, 2015 8:31:03 GMT
20W at most with those valves.
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Post by ChrisB on Aug 15, 2015 9:13:24 GMT
I thought some had EL34s however I could be wrong.
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Post by ChrisB on Aug 18, 2015 6:59:04 GMT
Update: After a little light noodling around the net, it seems that the references that I have seen about EL 34 in connection with these amps may have been valves in the PAs that some of the organs may have been connected to.
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Post by Slinger on Aug 18, 2015 8:06:12 GMT
Have you looked at these Chris? This site might be useful too |
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Post by ChrisB on Aug 18, 2015 13:56:10 GMT
Thanks.
It's not something that I want to do, I just wondered if it might be possible and/or worthwhile for someone else!
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