Posted on Jun 13 2007 02:52 PM
websurfer
WR, you have been a great help for information on these pans here on the forum.
thanks, but really - Im only posting what I know but Im not a technician or a mechanic, just hobbiest so Im posting with disclaimer 
here's what I do know: dont leave your multimeter on when you put in the box, or the battery will be dead when you need it 
image
from the top of my head I seem to remeber that your output impedance checks out but the imput is way too high - it's rated 8 ohms and I think my 4AB3C1B pans measure about 1.8 ohms.
it's almost impossible to believe, but finding info about this on the internet is impossible. I always thought "the net" was the new oracle and knew everything, but alas...
Ive came across two stories: the letter code (C would be fender-compatible) and the tape on the transducers is color coded (I have one with yellow tape - just like modern day accutronics and it is NOT fender-compatible. that's all I know)
what I suspect happened is this. there's a shitload of pans from old hammond organs flying around. once people saw what old hammond and gibbs pans fetched on the 'bay, people started putting these up for auction, without having a clue about the specs. The typical ebay add will say "this is a reverb pan from an old hammond organ. Fender-guys love these in their vintage tube amps" or something to that effect. I got one to check my 'yeah right' theory and it was indeed the wrong pan. (if you hadn't guessed that by the fact that I own such a pan 
Im looking for a bargain just like everyone else). Ive been asking sellers to provide info on the specs, but no one ever seems to be able to provide anything.
anyway, if you keep checkking ebay, you will see that most of the times, these "comes from organ" pans fetch between $15 and $25, while pans that actually come from vintage fender amps can fetch up to 100 bucks.
btw, because Im a moron and like to live on the edge (insert self mocking emoticon) I tried the "wrong "pan anyway in my reverb tank (too large imput impedance) for a minute or so. it gave very nice reverb, about 20% effective of the right pan though. Im not 100% but Id assume you'd blow up the reverbtransformer or your tubes if you keep that game up ... it's basically the same thing as an amp, a transformer driving a mechanical device, just not a speaker but a spring.
anyway, hope that helps. it's largely assumption on my part, I'd LOVE to see anyone more knowledgable about electronics (you know who you are!) to chime in and correct / ammend what I said.
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