[Amps] DEAD Alpha 91B

[Carl]

I believe the Alpha 77 series were the last to violate NEC but not the 
only company do do so.

Carl
KM1H



----- Original Message ----- 
From: "Jim Brown" <jim at audiosystemsgroup.com>
To: <amps at contesting.com>
Sent: Monday, May 18, 2009 12:03 PM
Subject: Re: [Amps] DEAD Alpha 91B


> On Mon, 18 May 2009 12:33:19 -0300, Thomas Carlsson wrote:
>
>>The Alpha 91b is a great amplifier
>
> Mike,
>
> While you're in there, you might want to check to see if this model
> is running a 120V fan between one side of 240V and ground. As you
> know, that's a no-no, and generates problems with magnetic fields.
> Alpha does that with some of their older amps. Ten Tec solved that
> design problem correctly by running their 120V fan off of half of
> the primary of the power transformer.
>
> 73,
>
> Jim K9YC
>
>
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