[SPAM] Re: [Phono-L] Young collectors

[Douglas Houston]

No. The bulb is connected ACROSS the voice coil, and when it's resistance
is low (cold), it loads the output. 


> [Original Message]
> From: DanKj <edisone1 at verizon.net>
> To: Antique Phonograph List <phono-l at oldcrank.org>
> Date: 6/28/2009 11:18:41 PM
> Subject: Re: [SPAM] Re: [Phono-L] Young collectors
>
> I'm not understanding your description.  Wouldn't a higher resistance 
> DECREASE the volume of the speaker?
>
>
> ----- Original Message ----- 
> From: "Douglas Houston" <cdh041 at earthlink.net>
>
> >
> > They had an incandescent bulb, across the secondary of the output
> > transformer, either from a special tap on the winding, or across the 
> > entire
> > voice coil. On soft levels, the bulb would be a low value resistive
load 
> > on
> > the output, and attenuate it. As levels increased, the bulb would light
> > brighter, increasing the  resistance across the speaker, and effect
higher
> > volume. 
>
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