From goffmac747@aol.com Tue Jan 01 07:22:17 2008
Subject:Re: 8 pin vs 11 pin leslie connection
That makes sense.. yes the halfmoon switches do have 120 volts on them and they burn out after a while..In fact it's a wonder they can handle the voltage at all.. They look like guitar pickup selector switches inside..Burnt a few...
-----Original Message-----
From: Bruce Wahler
To: CloneWheel@yahoogroups.com
Sent: Tue, 1 Jan 2008 10:46 pm
Subject: Re: [CWSG] 8 pin vs 11 pin leslie connection
Hi,
> And while we're on the subject does anyone know why HZ changed the pins on the clones to not fit 122's etc?
If you're asking, "Why doesn't Hammond-Suzuki" use the 6-pin standard," it has to do with UL listing. The 6-pin standard was developed in the '40s or '50s. Hammond changed to the 11-pin standard in the early '80s, for safety reasons.
UL doesn't allow "high" voltages ( > 42V) and audio to run inside the same cable. It's not as big a deal for the 122, where there is a 50-80VDC level being added to the audio. The biggest issue is in the 145/147 6-pin setup, where there is 120VAC running in the cable alongside the audio. In fact, the halfmoon switch on a vintage setup as 120VAC running inside its case.
Why H-Z used the 8-pin connector on the newer products is anyone's guess ...
Regards,
-BW
--
Bruce Wahler
AshbySolutions.com™
978.386.7389 voice/fax
bruce@ashbysolutions.com
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