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Rarest Challenger Ever?
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GreenTone007  
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 More options Sep 17 2012, 9:07 pm
Newsgroups: rec.audio.tubes
From: GreenTone007 <GreenTone007.a9dc...@audiobanter.com>
Date: Tue, 18 Sep 2012 01:07:13 +0000
Local: Mon, Sep 17 2012 9:07 pm
Subject: Rarest Challenger Ever?
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I have a Bogen Challenger CHA 75A Pa amplifier dated 1974, I need a
schematic, ive found the schem. for the CHA 75 but not 75A, it has 2
power tubes instead of 4 like the 75. Im a guitar amp builder and this
thing just baffles me. Id like to change the preamp to a more guitar
friendly layout, 5f6 or 5e3, but the power section is crazy on this
thing. Any help would be greatly appreciated. thanks in advance.

--
GreenTone007


 
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GreenTone007  
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 More options Sep 18 2012, 11:22 pm
Newsgroups: rec.audio.tubes
From: GreenTone007 <GreenTone007.a9f1...@audiobanter.com>
Date: Wed, 19 Sep 2012 03:22:33 +0000
Local: Tues, Sep 18 2012 11:22 pm
Subject: Re: Rarest Challenger Ever?
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GreenTone007;962544 Wrote:

> I have a Bogen Challenger CHA 75A Pa amplifier dated 1974, I need a
> schematic, ive found the schem. for the CHA 75 but not 75A, it has 2
> power tubes instead of 4 like the 75. Im a guitar amp builder and this
> thing just baffles me. Id like to change the preamp to a more guitar
> friendly layout, 5f6 or 5e3, but the power section is crazy on this
> thing. Any help would be greatly appreciated. thanks in advance.

found out 75 and 75a are same amp just different tubes. thanks

--
GreenTone007


 
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