Gentlemen,
The SB-230 used a ceramic tube, not the glass 3-500Z.
The SB-220 uses a pair of glass 3-500Z's.
The SB-200 uses a pair of glass 572B's.
The other Heath amps which followed the "green line 200/220 series"
throttled back to a single glass 3-500Z as a cost savings measure.
73,
Dave, K2DP
----- Original Message -----
From: "Doug Renwick" <ve5ra@sasktel.net>
To: "'Charles Harpole'" <k4vud@hotmail.com>; <amps@contesting.com>
Sent: Wednesday, July 01, 2009 11:24 PM
Subject: Re: [Amps] SB-220 had two
> Well I'll be a monkey's uncle ... I always believed that the original
> Heath SB-230 had a single 8873. Now I am told that it has two 8873 or
> two 3-500 ... somebody's sure guessing and guessing wrong.
>
> Doug
>
> I'll run the race and I will never be the same again.
>
> -----Original Message-----
> From: amps-bounces@contesting.com [mailto:amps-bounces@contesting.com]
> On Behalf Of Charles Harpole
> Sent: July 1, 2009 9:17 PM
> To: km1h@jeremy.mv.com; fortra@siol.net; taurusshoguy@yahoo.com;
> amps@contesting.com
> Subject: [Amps] SB-220 had two
>
>
> Heath SB-220/230 used TWO 3-500z.
>
>
>
> Charles Harpole k4vud@hotmail.com
>
>
>
> _______________________________________________
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> http://lists.contesting.com/mailman/listinfo/amps
>
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