Print Page - Polytone 103 schematic

Title: Polytone 103 schematic
Post by: polytone on October 16, 2010, 02:39:52 AM

I'm looking for a schematic for a Polytone model 103 amplifier.

Title: Re: Polytone 103 schematic
Post by: J M Fahey on October 16, 2010, 07:26:31 AM

Search the Forum.
You'll find 2 versions: the all-discrete one and the LM391 driven.
Your amp should have one of those.

Title: Re: Polytone 103 schematic
Post by: rnick@allegrotech.net on October 17, 2012, 10:16:07 AM

:mobile

I am a new comer and cannot find this schematic, can someone help? Yikes! Polytone 103

Title: Re: Polytone 103 schematic
Post by: spud on October 17, 2012, 12:03:52 PM

Just out a curiosity and my own nostalgia, I think I had a 103 in college - or was it a 102? Is the 103 the one with one 12" and two 8"s speakers? A combo, kind of large, did about 100-120 watts. Is this the same one? Mine had a distortion circuit but I didn't care for it so much and used a BOSS OD - with that I could get some serious sounds out of it. Mine also had vibrato/tremolo like circuit. Am I thinking of the same amp? BTW, I'd be interested in the schematic too just for curiosity since I sold the amp back in 1983 to a buddy of mine.

Jim

Title: Re: Polytone 103 schematic
Post by: J M Fahey on October 17, 2012, 12:23:10 PM

The "numbers" varied according to speaker complement or size, but the circuit was *basically* the same:
www.murchmusic.com/polytoneserviceinfo.htm
(http://www.murchmusic.com/Polytone%20Info/Schem1.JPG)
(http://www.murchmusic.com/Polytone%20Info/schem2.JPG)
(http://music-electronics-forum.com/attachments/9268d1273971872-polytone-pwr.gif)

Solid State Guitar Amp Forum | DIY Guitar Amplifiers

Solid State Amplifiers => Amplifier Discussion => Topic started by: polytone on October 16, 2010, 02:39:52 AM