Photo GE 274B

Octal Mojo guitar amp (DIY)

The Sound

 

Jump  Time for a sound check!
Jump  6SL7 shootout

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Time for a soundcheck!

(by Paul Stanley)

Paul Stanley wrote to Tom Schlangen:

The mid pot is no loss in my opinion. I don't think that a master volume pot is necessary either for experienced guitarist like ourselves. tongue in cheek besides there was no room. laughing out loud laughing out loud

I'd already ganged the boost switch with the treble control. thinking about that, I hope I never have to change it quickly because, although chickenheads have the necessary MoJo, they're crap for that application. laughing out loud laughing out loud

Seriously, because I've played acoustic guitar (badly) for a number of years, I've become used to creating variances in sound through attack. This amp, because of it's simplicity and dynamics, is perfect for this.

It's a little too sophisticated for beginners. cool

The settings without the boost sound lovely. Plenty of volume, just a hint of overdrive with my guitar when leaned on, perfect.

The singing I mentioned, sounds, as though there is a reverb unit in line... just turned on. This is to do with the 6SL7, because I have substituted the 6SN7 with a 12AU7 and it is still there. tumbs up

I've been trying my hand at slide guitar playing lately. With the guitar on bridge pickup and the amp on boost the sound is so good it brings the neighbours running to the door. cool evil devil

Very Ry Cooder off Get Rythm................righteous I think the term is. grin grin

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6SL7 shootout

(by Tom Schlangen)

Tom Schlangen wrote to Paul Stanley:

Paul,

I never ever will do something like this again, since the SO and the cats are completely unnerved curse curse curse by now, I got blisters at the fingertips, an aching wrist, and probably some thousands of ear drum cells have been killed along the shootout, too curse

The contenders, left to right:

Photo 6SL7 tubes

1. Russian Reflector 6H9C
2. JAN CRC RCA 6SL7-GT
3. Standard late production Sylvania "short base" 6SL7
4. JAN CHS Sylvania "green lettering" 6SL7-GT

The "special guests":

Photo 6SL7 tubes

1. TFK "ribbed plate" ECC83
2. JAN General Electric 5751

The results:

Table

Ultra-short summary: You canīt do wrong with the Reflektors in such a small & cheap guitar amp project.

Cheers,

  Tom

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© 1998-2012 EMail  Tom Schlangen, serpentine@netcologne.de
Last changed: 15.01.2012