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I gave a complete answer in saying that the 8444-Kit is the correct one. You can look it up here (for example):

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Yes, this is possible. The 8444 kit is the one for this purpose. ?Actually, the Leslie 251 would be the right one for this purpose, since rotating (vortexing?) the reverb may sound ?cheesy“. Not everyone’s taste.

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I heard years ago you could connect the reverb from an A100 to a 147 Leslie but through my?
limited knowledge I can't understand how. Is this possible or not ?

Jim Mc

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I have found a schematic of the organ mate, . Looking at this, I would expect a lowish input impedance, and a high output impedance. This is based on the drive coming from a cathode follower stage (low output impedance) through a transformer, actual output impedance would depend on the transformer ratio, but I wouldn't expect a step up transformer here. Output from the tank is fed directly to the grid of the recovery amplifier valve, which would be a high impedance point.

IIRC the reverb tank on the Organ Mate reverb is the same as e.g. used in the A-100, that is, low impedance input (since driven from the speakers - with that bulb shunt in series). The Organ Mate has a built in output transformer having a low impedance secondary winding that matches the low impedance input (few Ohms) - I did a measurement on 3 tanks (1122). Input Ohm value measured between 0.9 and 2.3 Ohms.

—

Christoph

Am 25.04.2020 um 20:27 schrieb Chris Clifton <clifton.christopher@...>:

Also, if you can measure the resistance of the transducer windings, this will give you some idea of the impedance. Generally the impedance will be somewhat higher than the resistance measured with a multimeter. Not so very much higher that you should have any doubt. The Accutronics transducer type with the next impedance up from the measured DC resistance will be the one you want.

On 25/04/2020 18:50, Michael Casino via wrote:

You can start here:

The people at amplified parts can most likely sell you the right one.

-----Original Message-----
From: scott.brand <scott.brand@...>
To: hammondzone <[email protected]>
Sent: Sat, Apr 25, 2020 1:37 am
Subject: [hammondzone] Organmate Reverb

Does anyone happen to know the specs on the tanks used on the Organmate Reverb units?? I've got one here with a busted connector at one of the transducers.? I don't see any model number on the tank itself (just a date stamp from 1968), but there is at least a sticker identifying it as a Hammond-Gibbs unit.? (2 spring)

I'm hoping it'll be possible just to replace the tank.? Any ideas?? Thanks in advance.

--
<signature.jpg>

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IIRC the reverb tank on the Organ Mate reverb is the same as e.g. used in the A-100, that is, low impedance input (since driven from the speakers - with that bulb shunt in series). The Organ Mate has a built in output transformer having a low impedance secondary winding that matches the low impedance input (few Ohms) - I did a measurement on 3 tanks (1122). Input Ohm value measured between 0.9 and 2.3 Ohms.

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Also, if you can measure the resistance of the transducer windings, this will give you some idea of the impedance. Generally the impedance will be somewhat higher than the resistance measured with a multimeter. Not so very much higher that you should have any doubt. The Accutronics transducer type with the next impedance up from the measured DC resistance will be the one you want.

You can start here:

The people at amplified parts can most likely sell you the right one.

-----Original Message-----
From: scott.brand <scott.brand@...>
To: hammondzone <[email protected]>
Sent: Sat, Apr 25, 2020 1:37 am
Subject: [hammondzone] Organmate Reverb

Does anyone happen to know the specs on the tanks used on the Organmate Reverb units?? I've got one here with a busted connector at one of the transducers.? I don't see any model number on the tank itself (just a date stamp from 1968), but there is at least a sticker identifying it as a Hammond-Gibbs unit.? (2 spring)

I'm hoping it'll be possible just to replace the tank.? Any ideas?? Thanks in advance.

Does anyone happen to know the specs on the tanks used on the Organmate Reverb units?? I've got one here with a busted connector at one of the transducers.? I don't see any model number on the tank itself (just a date stamp from 1968), but there is at least a sticker identifying it as a Hammond-Gibbs unit.? (2 spring)

I'm hoping it'll be possible just to replace the tank.? Any ideas?? Thanks in advance.

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Having just watched your Youtube video, I suspect that the volume of the hum increased as you opened the swell pedal. If so the hum is getting into the organ circuits somewhere. A likely cause, as Diayne suggested is the magnetic field from the Leslie motors interfering with the manual matching transformer at the left hand end of the organ. Leslie speakers, or indeed anything with a motor or transformer that may generate a mains frequency magnetic field need to be kept away from the left hand end of the organ.

Will do and report back

On Apr 21, 2020, at 5:26 PM, Diayne McComis <diayne@...> wrote:

?Joel , Always remember that the Leslie must be to the right of the organ or it will hum.
Your picture wasn't showing enough info. Try moving it as far to the right of the organ as?
possible.? ( setting in front of the keys to the right)

Jim Mc

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Will do and report back

Joel , Always remember that the Leslie must be to the right of the organ or it will hum.
Your picture wasn't showing enough info. Try moving it as far to the right of the organ as?
possible.? ( setting in front of the keys to the right)

Jim Mc

Thanks Scott

On 4/21/2020 11:14 AM, vintagevalveplayer via groups.io wrote:

On the A100 it seems to be the other way round, Grey appears to be live or hot and neutral is blue.

Correct in the USA.

Thank you Chris for your very swift reply.
Yes my MEE switch has two sides and nine wires, info noted re the resistors.
One final possibly dumb question if you don't mind.
My A100 has been messed with by previous owners and I am trying to get it wired correctly and safely.
I am UK based. Regarding AC in, all the info I can find seems to suggest that Neutral (our blue) or AC common should be grey or white and that Live (our brown) or AC hot should be blue or black or red.
On the A100 it seems to be the other way round, Grey appears to be live or hot and neutral is blue.
Does it matter? or am I being fussy.
Thanks again
Robin

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The installation instructions here, have a diagram of the internal wiring of the 011874 connector box. The main things you will need are two 8 ohm 10 watt resistors (No problem with higher wattage resistors, they just take more space in the box. In fact, as in the past I've had a number of service calls on A-100/147 installations where the equivalent load resistor inside the Leslie chassis has burnt out, a higher rating may be preferable) anyway back to the task in hand, these resistors are the console load resistors, they provide a dummy load to the organ amplifiers, preventing possible damage when in "Echo" setting. They are connected, one each to pins 5 & 6 of the six pin outlet of the kit with the other ends to ground, pin 1 of the 6 pin outlet. Another point to watch out for, do you have a two channel Main-Ensemble-Echo switch? You need a switch with two sets of contacts, one to switch the main channel, and one to switch the reverb channel.

Hi
I am trying to connect my Hammond A100 to my Leslie 251 (with the reverb going to the second stationary Chanel)
Parts I have -
Leslie half moon Main-Ensemble-Echo switch and Chorale-Tremolo switch, Six pin Leslie cable, Six pin sockets. A100 Service manual, Leslie 251 Owners Manual.
An old console connector metal box which I hope to use to make my own kit.
I do not have the correct kit which I understand is kit 8253 but I do have the 'Console Connector Kit 8253 Installation Instructions' which includes wiring diagrams.
My problem is that because I don't have the kit, I don't know what components if any are inside it and how the internal wiring goes inside the kit box.
As the kit is unavailable I am hoping with the expert help on here to be able to make up my own box.
Many thanks
Robin

Hi
I am trying to connect my Hammond A100 to my Leslie 251 (with the reverb going to the second stationary Chanel)
Parts I have -
Leslie half moon Main-Ensemble-Echo switch and Chorale-Tremolo switch, Six pin Leslie cable, Six pin sockets. A100 Service manual, Leslie 251 Owners Manual.
An old console connector metal box which I hope to use to make my own kit.
I do not have the correct kit which I understand is kit 8253 but I do have the 'Console Connector Kit 8253 Installation Instructions' which includes wiring diagrams.
My problem is that because I don't have the kit, I don't know what components if any are inside it and how the internal wiring goes inside the kit box.
As the kit is unavailable I am hoping with the expert help on here to be able to make up my own box.
Many thanks
Robin

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Hi - new to me Leslie 147A - connected via 6 conductor cable to my B3 console. ?

Wiring to 6 pin socket is as follows:?

Hi -

I picked up a Leslie 147A for my B3 and finally got around to adding a 6 pin socket to my interface box.

I’m getting some hum from the Leslie 147A which I didn’t get with my old 770. I dont think this this normal - any suggestions on where to start to diagnose this one?