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Tuning a Kimball 770?
Hey guys,
I recently bought a Kimball Swinger 700-series for cheap, mostly to scratch my itch for a cheesy combo organ that wasn't absurdly expensive. I like the range of sounds I can get from it (besides the abysmal built-in Leslie that sounds like it has no frequencies above about 3kHz).
It just has one problem - it's really out of tune with itself! I assume that, like most organs of this type, it just uses top-octave divide-down circuitry, right? What would cause these tone generators to go out of tune? Are there trim pots on the boards to adjust the pitch individually, or am I dealing with some bad caps or something? I'm not even sure exactly how to open the top to look at the tone generator boards. I didn't find anything like that when I opened the back.
The organ works great besides that (and a scratchy swell pedal which I haven't been bothered to take apart and clean). In a way, it adds to the cheesy character I'm going for, and with vibrato on it's not terribly noticeable. However, it certainly limits what I can do with it (and what keys I can play in without cringing).
Anyone have any ideas?
I recently bought a Kimball Swinger 700-series for cheap, mostly to scratch my itch for a cheesy combo organ that wasn't absurdly expensive. I like the range of sounds I can get from it (besides the abysmal built-in Leslie that sounds like it has no frequencies above about 3kHz).
It just has one problem - it's really out of tune with itself! I assume that, like most organs of this type, it just uses top-octave divide-down circuitry, right? What would cause these tone generators to go out of tune? Are there trim pots on the boards to adjust the pitch individually, or am I dealing with some bad caps or something? I'm not even sure exactly how to open the top to look at the tone generator boards. I didn't find anything like that when I opened the back.
The organ works great besides that (and a scratchy swell pedal which I haven't been bothered to take apart and clean). In a way, it adds to the cheesy character I'm going for, and with vibrato on it's not terribly noticeable. However, it certainly limits what I can do with it (and what keys I can play in without cringing).
Anyone have any ideas?
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