Using KT88 to build a monster champ amp?

G · 13th December 2004, 03:29 PM

Hi All,

Long time no post. I'm gearing up to build myself a guitar amp and 2x12 extension cabinet for my personal use and I would like some opinions. I had originally planned on building the Fender 5F2 circuit (Champ) for my amplifier needs but then I thought I would change the ouput tube to a EL34 for a little more power. Then I thought I would use a KT88 for a lot more power. The output transformer from Allen Amplification will handle 90mA so I would have to run the KT88 somewhat cold but I should be able to get a solid 7 watts out of it or so. The real thing is what would this amp sound like with a 5F2 tone stack and a KT88 as the output tube. The speakers are going to be two 12" alnico speakers from a old Magnavox console. They are meant for low power tube amps so they should work great. Opinions? Anyone ever tried this? Thanks.

alejo · 13th December 2004, 05:18 PM

Firts Fender 5F1 is "Champ", the model 5F2 is "Princeton".

This amps to find this sound use 6V6 valve in very HOT point.

If you search this sound and +power use two 6V6 y paralel. (or four).

Alejo

alejo · 13th December 2004, 05:20 PM

see this link

http://www.ampwares.com/ffg/schematics.html

13th December 2004, 03:29 PM	#1
G diyAudio Member Join Date: Apr 2002 Location: Belleville, IL.	Using KT88 to build a monster champ amp? Hi All, Long time no post. I'm gearing up to build myself a guitar amp and 2x12 extension cabinet for my personal use and I would like some opinions. I had originally planned on building the Fender 5F2 circuit (Champ) for my amplifier needs but then I thought I would change the ouput tube to a EL34 for a little more power. Then I thought I would use a KT88 for a lot more power. The output transformer from Allen Amplification will handle 90mA so I would have to run the KT88 somewhat cold but I should be able to get a solid 7 watts out of it or so. The real thing is what would this amp sound like with a 5F2 tone stack and a KT88 as the output tube. The speakers are going to be two 12" alnico speakers from a old Magnavox console. They are meant for low power tube amps so they should work great. Opinions? Anyone ever tried this? Thanks. __________________ Gavin

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13th December 2004, 05:18 PM	#2
alejo diyAudio Member Join Date: Jun 2004 Location: bs.as.	Firts Fender 5F1 is "Champ", the model 5F2 is "Princeton". This amps to find this sound use 6V6 valve in very HOT point. If you search this sound and +power use two 6V6 y paralel. (or four). Alejo

13th December 2004, 05:20 PM	#3
alejo diyAudio Member Join Date: Jun 2004 Location: bs.as.	see this link http://www.ampwares.com/ffg/schematics.html

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