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Yes, I'm aware of the fiddling that was done after, but that was supposed to be kept totally secret. I was at the Bimbo's show.

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That B-3 on "Incredible" belonged to Steve Blair, right?? Did you acquire it from his estate?

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I don't know the original specification of these cables, but I can give you some pointers to selecting suitable calbles. There are differences between 6, 9, and 11 pin cables, so I'll deal with each in turn.

6-pin cables: The signal wires (red/black pair) are a lighter guage than the others, they only handle audio signal at speaker level. Typically 20 watts into 8 ohms for a 147 type, roughly 12 volts, at 1.5 amps, signal current to a 122 is tiny. The other four wires need to be insulated to take mains voltage or the B+ voltage from a 122, because of the B+, typically 2~300 volts I'd look for something rated for European 230 volt mains even if your local mains is 120 volt. Current consumption of a single Leslie is typically 2 amps at 120 volts or 1amp at 240 volts. In any case the mains part of the wiring should be rated to carry at least the current that the standard mains fuse in the Leslie is rated at.

9-pin cables: The seven signal and control wires only handle low voltage and current, maximum 30 volts, current a small fraction of an amp. Very thin wire would be electrically OK, but mechanically fragile. The two mains wires (blue/grey pair) need to be insulated to your local mains voltage standard and carry the mains current for the Leslie. A minimum current rating of 2 amps would be adequate, but bear in mind voltage drop in long cables may make thicker wire advisable.

11-pin cables: All conductors are low voltage, low current. Maximum 30 volts. Really your only concern here would be mechanical robustness. You could even use a cable with fewer than 11 cores, one pin was specified for a variable speed control that Leslie never implemented, so only 10 cores are used in any Leslie, most use less.

I have from time to time looked for bulk cable that could be used to make up Leslie cables. Mostly what I've found with enough cores has been vehicle trailer cable which isn't rated for mains voltage. There is, of course, no problem, other than cost, to using cable with a higher voltage or current rating than necessary, or with more cores than needed.

Greetings -

Does anyone know what gauge wiring is/was used in the OEM Hammond Organ cables for Leslie and tone cabinets?? Are the voice channels the same gauge as the line voltage?

Your input would be greatly appreciated.

Stay home and safe,
Bob

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I believe that some UK 147's had 117 volt speed switching relays, although the Leslie had a 240 volt mains transformer. These Leslies needed a connector kit with a small transformer to step the 240 volt UK mains down to 117. The connector box you have appears to be one of these.? The two black wires (primary) from the transformer connect to pins 3 & 4 of the 6-pin socket, the mains feed powering the Leslie. The two green wires and the white wire are the secondary with the white being the centre tap. The green wires go to pins 2 & 5 of the output socket, with one of the two going through the tremolo? switch. The centre tap is connected to ground.

Actually, although I'd always assumed the transformer to be a step down, it may in fact be a 1:1 isolating transformer. Using a transformer in this way would mean that no more than 120 volts relative to ground ever appears at the tremolo switch contacts. Without this transformer, 240 volts will be on at least one contact of the switch some of the time, depending on whether the switch ends up on the line or neutral side when the kit is installed. I'd suggest you install the kit as it is. If speed switching on the 147 works normally, fine. If the kit is supplying 117 volts to the relay, then switching to chorale may be unreliable if the relay requires 240 volts. If this happens, remove the transformer and rewire as the more usual 147 system.

Another thought, if the transformer is intended for use on 120 volt supply (where did this box come from?), the transformer will likely run hot on 240 volts, and eventually burn out. Something to watch out for. Unlikely to do any damage short term, but a potential fire risk if a 120 volt transformer is abused long term in this way. For what it's worth, back in the day, if I ever came across one of these boxes I simply removed the transformer and rewired accordingly. However if it is intended to act as a 1:1 isolating transformer, avoiding 240 volts going directly to the tremolo switch, then things would be a little safer with the transformer in place.

Hi Chris and Guys,
Ive found a fitting kit which is a 037655 kit.
Info ive found says its a 147 kit ,but this one has a transformer on the side that the photos of this kit ive found do not have.
Do you think this kit may have been adapted to a 122 kit?
Is there any other reason it may have a Transformer on it?

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As the series 12 cabinet uses the same 7 pin connector as the series 10 cabinet, with mains and ground on the same pins. I would hazard a guess that the internal circuits of the two types of cabinet are very similar. Power amplifier modules are likely to be similar, if not identical, and signal processing prior to the power amplifier may well use similar technology I do have a schematic for the series 10.

That's a good start.? Thank you for the info but would still like a schematic also if anyone has one.

Again, thanks.

-----Original Message-----
From: Michael Casino via Groups.Io <michaelcasino@...>
To: [email protected]
Sent: Mon, Mar 30, 2020 8:47 am
Subject: Re: [hammondzone] X-66 Series 12 Tone Cabinet Schematic

The Info is here compiled by Harvey Olsen.


-----Original Message-----
From: BobGuttman via Groups.Io <BobGuttman@...>
To: hammondzone <[email protected]>
Sent: Sun, Mar 29, 2020 3:59 pm
Subject: [hammondzone] X-66 Series 12 Tone Cabinet Schematic

Greetings - would anyone happen to have a schematic for the series 12 tone cabinet for the X-66 organ?? Mainly interested in the connector pin out configurations and tone selector switch.

Thanks

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