[HAM] speaker connection on M-100

[Frank Stroupe]

LOL...you are kind of in luck...I have lurked on this list for a few years, 
and finally, this weekend, decided to get my organ back up, and to start 
back reading this list.  Now that I have removed the mouse nest from the top 
of the TWG, and the handful of mouse feces from the interior of the organ, 
and have it playing, I might can help you a little.

My M-143 was fitted with a Leslie kit at the dealer (I assume) so it is a 
little confusing, as the speaker + and - comes from the Leslie box, instead 
of the way it came from the factory.  They used wire nuts for the splices 
going into the Leslie box.

But, looking at the organ and the schematic, it appears that a twisted 
green/black pair of wires goes from Pin 1 and Pin 3 respectively of the plug 
that is between the black paper can cap and the power transformer, and runs 
to the speaker on the left facing the back of the organ.  There is a jumper 
running from the + of that speaker to the + of the other 12" speaker, and a 
black one running from - to -.

There is another jumper running from the + of the second speaker back into 
the Leslie box.  I rather assume that originally, that wire went to the 
reverb amp, as it and the lead into the reverb amp are the same shade of 
green.

The wires going to the 8" speaker come from the reverb switches.  They 
appear to come from the TWG, but they actually come from behind it, in the 
bundle of wires that comes from the tabs.


Hope this helps a little.

Frank


>
> I thought I had a relevant picture left over of some work I did on a M101.
> This is the closest shot I have.  I don't have a M101 lying around
> anymore, but I do remember a parallel wiring for the 2 12/s from the main
> amp and a hot lead coming off the second 12 to the "input" terminal on the
> reverb amp.  Hope this helps.
>
> ps- My first post!>
>
>
> The reverb amp drives the 8" speaker. The main amp drives the 2 12" in
>> parallel.
>>
>> -----Original Message-----
>> From: hammond-bounces at zeni.net [mailto:hammond-bounces at zeni.net]On
>> Behalf Of Stainless Brown
>> Sent: Wednesday, January 03, 2007 12:23 PM
>> To: hammond at zeni.net
>> Subject: [HAM] speaker connection on M-100
>>
>>
>> I'm in the process of putting my M-100 back together, the previous owner
>> robbed the reverb amp and one of the speakers from it.  I never really
>> looked at the speaker connection before, always assuming that the missing
>> speaker was for the AO-44 output, however I notice that the remaing 12"
>> speaker (in the center) has a set of parallel "jumpers which would
>> conveniently connect to the other (and adjacent)12".
>>
>>   The 8" speaker seams to get one lead from the main power amp and the
>> other
>> comes from the tone generator
>>
>>   Any ideas?
>>   Thanks
>>   Stan
>>
>>   PS, I still have the Leslie x77P power supply and amplifiers if
>> anybody's
>> interested for the price of shipping it.
>> --
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>>
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>>
>>
>
> ------------------------------
>
> Message: 2
> Date: Sun, 7 Jan 2007 15:04:31 EST
> From: ElSeveno at aol.com
> Subject: Re: [HAM] 2 prong to 3 prong (grounded) power cord
> To: hammond at zeni.net
> Message-ID: <c07.e280c5c.32d2ac4f at aol.com>
> Content-Type: text/plain; charset="US-ASCII"
>
>>yes
>
>  Reminds me of Kenny the Gardener on Letterman, " As usual Kenny you've
> raised more questions than you've answered"
>   Like Dave said, check the archives you have make sure there is no
> continuity between chassis and AC and follow all the protocol for hot, 
> neutral and
> ground. Leaky transformers, switch side are a couple etceteras to 
> consider.
>
> Paul
>
>
> ------------------------------
>
> Message: 3
> Date: Sun, 07 Jan 2007 12:13:09 -0800
> From: OF <scott195 at centurytel.net>
> Subject: Re: [HAM] 2 prong to 3 prong (grounded) power cord
> To: The Hammond Forum <hammond at zeni.net>
> Message-ID: <5.1.0.14.2.20070107121118.02d578a8 at 209.206.160.251>
> Content-Type: text/plain; charset=us-ascii; format=flowed;
> x-avg-checked=avg-ok-6B973D12
>
> At 12:04 PM 1/7/2007, ElSeveno at aol.com wrote:
>
>> >yes
>>
>>   Reminds me of Kenny the Gardener on Letterman, " As usual Kenny you've
>>raised more questions than you've answered"
>>    Like Dave said, check the archives you have make sure there is no
>>continuity between chassis and AC and follow all the protocol for hot,
>>neutral and
>>ground. Leaky transformers, switch side are a couple etceteras to 
>>consider.
>
> Yep, I want to second that. Given all the ways these organs can leak AC to
> ground, I never ground them. I recently worked on a B-3 that had 318V on
> the chassis. I kept saying, "OW! What's biting me???"
>
>
>
>
> ------------------------------
>
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>
> End of hammond Digest, Vol 9, Issue 8
> *************************************
>