6v & 90v DC Power supply
in [Design]
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From: Rich Grise, but drunk on 27 Dec 2005 18:19 On Tue, 27 Dec 2005 21:27:31 +0000, Joerg wrote: > Hello Rich, > >>>I restored an old Hammond organ. These generate the tones in a similar >>>manner. A motor (plus a start motor) and over a hundred pickup coils on >>>the long secondary shaft. 20 hours of hard work got it going again but >>>we have accepted the fact that some of the bearings are pretty much over >>>the hill. So it needs 2-3 starts to coax it to run without that mild >>>screeching in the background. Getting spare parts from a company that >>>went out of business 30 years ago just isn't going to happen. >> >> So, put the cam thingie on some sort of spindle, with some kind of >> depth gauge thingie, (maybe a slide pot and a stick), and map the >> disks, and just make the same waveform from ROM? >> > > That has been tried many times. Several rather expensive electronic > organs have come out claiming to emulate a Hammond. So far the real > enthusiasts do anything to get their hands on the real thing, knowing > that there will come a day when the last one croaks. IIRC it was Paul > Shaffer (the guy who makes the music at david Letterman's show) who > spent the equivalent of a luxury car to have one restored. > Well, tastes vary, but really! Who wants a music box that makes it sound like you're at a skating rink? ;-P cheers! Rich
From: Joerg on 27 Dec 2005 18:53 Hello Rich, > > Well, tastes vary, but really! Who wants a music box that makes it > sound like you're at a skating rink? ;-P > Ok, I am not much of an expert on instruments or music in general. But a Hammond organ can fill a living room with a sound that, with the eyes closed, you'd think you are sitting in a cathedral. And lots of rock bands wouldn't use anything else. That is why a lot of Hammonds have been "sawed in halves" so they can be transported to the next gig. You could even buy split versions built into professional transport cases. Regards, Joerg http://www.analogconsultants.com
From: Michael A. Terrell on 27 Dec 2005 20:31 Joerg wrote: > > Hello Rich, > > > > Well, tastes vary, but really! Who wants a music box that makes it > > sound like you're at a skating rink? ;-P > > > > Ok, I am not much of an expert on instruments or music in general. But a > Hammond organ can fill a living room with a sound that, with the eyes > closed, you'd think you are sitting in a cathedral. And lots of rock > bands wouldn't use anything else. That is why a lot of Hammonds have > been "sawed in halves" so they can be transported to the next gig. You > could even buy split versions built into professional transport cases. > > Regards, Joerg > > http://www.analogconsultants.com They have a Hammond B3 at my church, with the Leslie speaker. There is another model Hammond in storage that needs a lot of work. Someone had it on their screened in porch and the finish is ruined, but it still plays. -- Service to my country? Been there, Done that, and I've got my DD214 to prove it. Member of DAV #85. Michael A. Terrell Central Florida
From: Michael A. Terrell on 27 Dec 2005 20:34 "Rich Grise, but drunk" wrote: > > Well, tastes vary, but really! Who wants a music box that makes it > sound like you're at a skating rink? ;-P > > cheers! > Rich People like the old Hammond organs like the B3 because the can't go out of tune. The mechanical tone generator makes sure of that. They only sound like a skating rink in, get this, A SKATING RINK! -- Service to my country? Been there, Done that, and I've got my DD214 to prove it. Member of DAV #85. Michael A. Terrell Central Florida
From: Rich Grise, but drunk on 27 Dec 2005 21:18
On Wed, 28 Dec 2005 01:34:30 +0000, Michael A. Terrell wrote: > "Rich Grise, but drunk" wrote: >> >> Well, tastes vary, but really! Who wants a music box that makes it >> sound like you're at a skating rink? ;-P > > People like the old Hammond organs like the B3 because the can't go > out of tune. The mechanical tone generator makes sure of that. They > only sound like a skating rink in, get this, A SKATING RINK! Well, being the insufferabley pedantic researcher that I am, I came up with a page: http://en.wikipedia.org/wiki/Hammond_organ that about a third of the way down, says: "... Accurate imitation of the Hammond sound with simple electronic circuitry was difficult, because the subtly-changing phase relationships between tonewheels could not be easily replicated...." OK, fair enough. :-) I guess a piano is even harder - they don't even reproduce well from a live recording! :-) Cheers! Rich |