I acquired the amps from the above-noted organ which had been sitting in 3 inches of water. The amps were above that but the organ bottom is now useless. I'd like to use these as a garage project/system. After searching here, I have not found what I was looking for. Can someone show me the pin-outs for the speakers? The input is clearly marked. Tx in advance.
Can you post a pic or two of the chassis showing the top and a shot of the output transformer or the underside? Otherwise, can you find a number stamped on the output transformer? The power tranny will for sure be on top and the output tranny can be either on top or under where the circuitry is.
The schematic can be bought from Morelock's organ service of Rienzi MS. They are listed in yp.com
Pity this is being scrapped out, these have rather nice tone and silver plate key contacts. I own one. Organ cases are a plague on the market, many filled with IC's made of unobtanium. The keys on the modern ones also have switches made of rubber. Everything in the 4500 but the key contacts and inductors is dirt common. I'm trying to coach a guy on organforum who got a free Allen MOS2 125 organ, whose previous owner couldn't justify the cost of authentic Allen repair boards. There are custom ROMS on those Allen boards. Wurly 4500s are transistors, resistors, diodes, capacitors, inductors. The pedal switches are glass bulb reed switches triggered by magnets, and shouldn't have been hurt by immersion. The case wrapper is hardwood and should have withstood immersion with only visual damage also. The bottom is plywood.
Pity this is being scrapped out, these have rather nice tone and silver plate key contacts. I own one. Organ cases are a plague on the market, many filled with IC's made of unobtanium. The keys on the modern ones also have switches made of rubber. Everything in the 4500 but the key contacts and inductors is dirt common. I'm trying to coach a guy on organforum who got a free Allen MOS2 125 organ, whose previous owner couldn't justify the cost of authentic Allen repair boards. There are custom ROMS on those Allen boards. Wurly 4500s are transistors, resistors, diodes, capacitors, inductors. The pedal switches are glass bulb reed switches triggered by magnets, and shouldn't have been hurt by immersion. The case wrapper is hardwood and should have withstood immersion with only visual damage also. The bottom is plywood.
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This has transistors. The only trafo is for the PS, all on the same chassis. Solid state, in other words. I agree with the OP, nice organ and highly regarded for what it is. I pulled the (stereo) volume pedal (below water line) the spring reverb and the Jensen speakers (above water line.) I might grab the Spectro-Sonic unit, though the cones on the speakers are trash. Let me ask a different way: typically, do the speaker outs come from the tone box plug?
The 6 pin amphenol plugs on the two amp ends next to the fuse holders go to the "tone cabinets", actually a subchassis on the bottom with filter units. This unit has 5 speakers. The 12 pin amphenols on top of the amps go to "filters" ie the tone generator sections. The 6 pin amphenol next to the TO3 transistors on the verticle flange goes to the swell pedal. flute type voices (tibia) go to the one amp to the rotary speaker. Complex waveforms, reeds & principals, go to other amp to the fixed speakers.
The speaker on the spectratone rotary speaker is nothing special, but the rotary coupling on the end of the shaft usually is bad and Morelock's sells them. The rubber feet are usually bad even on dry units and the speaker whacks into the bottom. The rubber motor mounts on mine are bad and the motor won't spin. The beit is bad too. All this is Morelock's stuff, although I can make feet & motor mounts with bulk rubber sawed up and drilled with wood spade bits All kind of big rubber blocks fall off trucks at big bumps and holes, I can usually pick one up every month or so. Three is enough for my inventory. Don't use a power saw on rubber.
Mine has about 100 dead electrolytic capacitors, I'm busy playing my piano & re-e-capped Hammond while I wait for a suitable rainy week to get into it. The Wurly has pitch bend, to add the third guitar to the Lynyrd Skynyrd tracks I'm already attempting on the Hammond H100 (which has fixed pitch)
The speaker on the spectratone rotary speaker is nothing special, but the rotary coupling on the end of the shaft usually is bad and Morelock's sells them. The rubber feet are usually bad even on dry units and the speaker whacks into the bottom. The rubber motor mounts on mine are bad and the motor won't spin. The beit is bad too. All this is Morelock's stuff, although I can make feet & motor mounts with bulk rubber sawed up and drilled with wood spade bits All kind of big rubber blocks fall off trucks at big bumps and holes, I can usually pick one up every month or so. Three is enough for my inventory. Don't use a power saw on rubber.
Mine has about 100 dead electrolytic capacitors, I'm busy playing my piano & re-e-capped Hammond while I wait for a suitable rainy week to get into it. The Wurly has pitch bend, to add the third guitar to the Lynyrd Skynyrd tracks I'm already attempting on the Hammond H100 (which has fixed pitch)
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I found the sub-chassis with 5 caps and 2 induction coils (crossover.) They were under the water line. So, the tone cabinet, 6-pin Amphenol jack is where I'll find audio?
Affirmative. I'd leave the wet inductors off for now and just use a broad range 8 ohm speaker on the tone cabinet output.
If I "probe" the Amphenol, I'm sure I can identify ground, leaving only five possibilities for signal. Affirmative. Is there any substantial voltage in that jack to avoid "getting on me"?
Do I have to connect the filter Amphenol to the tone cabinet Amphenol in any way or can I get audio direct from the tone cabinet out?
The output of the tone cabinet socket goes to the speaker crossover assembly. From the speaker crossover assembly go wires to the speakers. I don't know what the filter socket does but I suspect it is power supplies for the rest of the organ. Nor have I traced wires to the tone cabinet amphenol plug to know if tone cabinet AC is supplied there. Hammond does supply the tone cabinet AC from the organ. Tone cabinets are what Hammond invented to make sound, since their original A/B/C models had no internal power amplifiers or speakers. You should be able to visually track the AC wiring in the chassis. For more clarity buy the schematic diagram.
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Hammond sent AC down the cable to the tone cabinets (or Leslies), and tell me if I am wrong, but did not some Hammonds even send B+ down the cable from the organ? I do know that on some models, they sent B+ voltage down the balanced signal lines - a sort of phantom power arrangement - as a control voltage for the speed relay. So there might be +300v on a couple pins when the speed control was in one position. I forget fast or slow.
Leslie speaker hookups I have been studiiously avoiding, since there are about 100 variations depending on driving organ and the actual Leslie. or Hammond tone cabinet. For an exhaustive discussion of leslie hookups, see organforum.com the leslie and tone cabine thread. This hookup problem also pollutes the regular organ threads. Captain-foldback.com has the base hammond tone cabinet cable drawings online.
The tone cabinet provided the B+ voltage to the preamp tube plates in the Hammond A/B/C models (BC, BV included) , not including the B/C2 and B/C3 or A100.
The Wurlitzer 4500 has no tubes and no use for B+ voltage. Doesn't mean that maybe those pins are blank on the 4500 tone cabinet socket to provide compatibility with leslie hookup. With the 4500 having an internal rotary speaker I would think a leslie hookup would be redundant, but there are enough serious leslie fans out there to keep the price of a working one in my location >$1000. I'm 165 miles from Nashville TN, and yes the Hammond/Leslie flipper down there does drive up here and raid Craigslist sometimes. I think I've detected him buying up things in Evansville and Cincinnatti, must be a very lucrative business. He doesn't fool with Wurlitzers, I got this 4500 for $45 delivered to my sidewalk.
The tone cabinet provided the B+ voltage to the preamp tube plates in the Hammond A/B/C models (BC, BV included) , not including the B/C2 and B/C3 or A100.
The Wurlitzer 4500 has no tubes and no use for B+ voltage. Doesn't mean that maybe those pins are blank on the 4500 tone cabinet socket to provide compatibility with leslie hookup. With the 4500 having an internal rotary speaker I would think a leslie hookup would be redundant, but there are enough serious leslie fans out there to keep the price of a working one in my location >$1000. I'm 165 miles from Nashville TN, and yes the Hammond/Leslie flipper down there does drive up here and raid Craigslist sometimes. I think I've detected him buying up things in Evansville and Cincinnatti, must be a very lucrative business. He doesn't fool with Wurlitzers, I got this 4500 for $45 delivered to my sidewalk.
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