Re: Re:Super Reverb Question, Take 2

[Mark Beckles Willson <t_model@xxxxxxxxxxxxxxx>]

Hi Mike

I can't think of any electrical problem.  I have certainly tried this in
the past without blowing anything up but I wasn't wild about the distortion
sound.  I guess the sound comes from the tube sort of operating in class A
and clipping when it tries to pass responsibility for amplifying the signal
to the other tube which isn't there, if that makes any sense.

A Rod Piazza trick for softening up unresponsive hired Twins in Europe was
to remove just one of the four valves.  That was always somebody else's amp
of course.....


Mark




At 01:49 PM 1/9/03 -0800, you wrote:
>
>
>Hi Chris;
>
>Just curious as an electrical engineer - what potential problem would there
>be with pulling one tube of a push pull pair?
>
>I know a few guys that pull half of the push pull amp to get a rather
>peculiar type of distortion.  I also played through an old Silvertone bass
>amp with one half of the power amp blown (output transformer) for a number
>of years, with no pyrotechnics.
>
>Of course a Silvertone isn't a Super ;-)
>
>----- Original Message -----
>From: "Chris Stovall Brown" <boogie@xxxxxxx>
>To: "harp-l" <harp-l@xxxxxxxxxx>
>Sent: Saturday, January 04, 2003 12:41 PM
>Subject: Re:Super Reverb Question, Take 2
>
>
>>
>> Hi Bill & Harp-lers, Happy New Year,
>>
>>       Moving out of semipermanent lurker status to try and save your amp
>> before you cause it harm..It is very bad (could be fatal) to remove one of
>> the two power tubes on a Super (or any other 2 tube amp). This could do
>all
>> sorts of potentially disastrous damage to the amp. What you had probably
>> heard about was pulling 2 power tubes out of a 4 power tube amp (Like a
>Twin
>> Reverb or Showman etc). That is still not the greatest way to achieve a
>> power drop. An attenuator is a better route to go. As far as speakers go,
>> I've never had great success with Emminence but swear by Weber speakers.
>> Give Ted a call or drop him an email and tell him what you're looking for
>> and he'll  be glad to make a suggestion for what you need.
>>
>> Hope this Helps,
>>
>> CSB
>>
>> Please check out my website. Those of you that are still on the aol
>> plantation will have to cut and paste the url.
>> http://www.geocities.com/boogie02130/Homepage.html
>>
>>
>>
>> >Date: Fri, 3 Jan 2003 20:09:13 -0800 (PST)
>> From: Bill Houle <saxandharper@xxxxxxxxx>
>> Subject: Super Reverb Question, Take 2
>>
>> <snip>
>> . I
>> still have a couple questions:
>>
>> 1. I heard you could just pull one of the main power
>> tubes to be able to overdrive at lower volumes. Is
>> this really a good idea or does it strain some other
>> part of the circuit? Does it matter which one you
>> pull?
>>
>> 2. Power attenuators seem like another possibility.
>> Any particular model to get or avoid?
>>
>> 3. It has Eminence speakers in it. I don't know much
>> about speakers, are there better types to use for this
>> amp?
>>
>> Thanks,
>>
>> Bill H
>>
>>
>>
>>
>> --
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>>
>
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>Harp-l is sponsored by SPAH.
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