[HAM] ADDED INFO: Help Please? leslie 45 with 147 amp -

[David Anderson]

Joe,

You don't need--and should not use--a 122 kit to connect a 147  
amplifier!!!!!!!!!!!!!!

They are NOT pin compatible and use very different switching circuits.

It is, in fact, somewhat simpler to connect a 147. You don't need the  
122 kit at all. Connect the Ground and Signal wire from the 147 to  
the Ground and one G terminal of the organ's preamplifier. (OR you  
can drive the 147 from the A-100's power amplifier, using the 147  
amp's load resistor.)

The 147 amp uses 110VAC switching for the motor relay, not a DC  
control voltage like the 122.

You should be able to find the relevant schematics online.

David

On Jan 29, 2007, at 9:54 PM, joe d wrote:

> added info:
> I will not connect this 147 amp to my Ham with 122 type kits (risk of
> blowing things).
>
> I would want to rebuild this 147 type amp into a 122 type amp,  
> rather than
> install a kit to accept 147 leslies in the organ.
> What is involve with turning a 147 amp into a 122 type?
>
> thank you for any advice
>
>> From: "joe d" <joedoria at hotmail.com>
>> Reply-To: The Hammond Forum <hammond at zeni.net>
>> To: hammond at zeni.net
>> Subject: [HAM] Help Please? leslie 45 with 147 amp - always spinning
>> fast(asking for a friend)
>> Date: Mon, 29 Jan 2007 17:07:40 -0800
>>
>> Hello, asking for a friends leslie 147 problem:
>>
>> Tough one via text I understand but can any of you help me  
>> diagnose/take
>> steps to diagnose all the possible problems with a leslie 45 that  
>> has a 147
>> amp in it....that is always spinning FAST and not kicking into  
>> slow ever?
>> I am unfamiliar with the 147 amps.
>>
>> He bought an a-100 with a standard leslie 122 leslie kit and needs  
>> this
>> leslie to work with it essentially.
>>
>> What are some/all the possibilites that might cause this issue  
>> with a 147
>> amp?
>>
>> I've only been able to test it against my A-101 - which is working  
>> fine
>> with
>> my 122 leslies (kicks into slow and fast fine with my 122's).
>>
>> Tell me if I'm wrong here, but isn't it more likely that this  
>> 45/147 amp
>> requires either some modding of the lesie 122 type switch to make  
>> this
>> work,
>> or a different type leslie switch in order for it to function  
>> correctly?
>> Possibly an easy fix via wiring somehow?
>>
>> Or...
>> Is there more likely a problem somewhere in the amp (relay?, caps/ 
>> resistors
>> to check, etc.)?
>> The 147 has 2 6550's, 1 12au7 and an OC3 (all test fine).
>>
>> ANOTHER PROBLEM (possible):
>> It has a selectable OHM switch that is hard locked to the OPEN  
>> position
>> (seriously - I can't budge it to set to 8ohm or 16ohm at all). I  
>> don't want
>> to wrench on it of course, but are there cases where this might be
>> hardlocked in the OPEN position?  Reason?
>>
>> Should it be in the OPEN position ever, or is that the correct  
>> setting for
>> his application (connect to his A-100 with leslie 122 switching)?
>>
>> thanks for any help with this amp/leslie switching.  I'm just not  
>> familiar
>> with the 147 amps/settings.