Hey guys,
I am ready to pull the trigger on a PTP 2203 board for my '77 JMP and I was wondering how easy/difficult it is to alter the board to high gain while I am populating the board. I like the sound of the amp now, just don't wanna run a TS in front anymore. Anybody have good easy to understand schematics? I know this has probably been covered a million times so sorry in advance for that. Thanks!
Newbie question: 2203 PTP Board Hi gain
Moderator: VelvetGeorge
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killertone
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joepete
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I have a 77 also
I also have a 1977 2203. It had some gain mods already when I got it. I normally wouldnt recomend hacking up an original amp but the mod sounds great on mine. It has an extra preamp tube installed for an extra gain stage and there is a 2nd master volume pot installed on the front panel which seams to add gain and sustain. It also allows a cranked up sound at low volume levels even more so then with regular master volume. These were popular mods in the 80s and there are plenty of sites on the net for details on how to perform the mod. I think the mod is called the jose mod but Custom audio electronics and many other places can perform it for you if you would want to alter your amp to this extent.
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jerrydyer
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very easy to mod check out my current 2204
- Attachments
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- current preamp.doc
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vids.
http://www.youtube.com/user/jerrydyer?feature=mhw4" onclick="window.open(this.href);return false;
http://www.dui-specialist.com" onclick="window.open(this.href);return false;
http://www.youtube.com/user/jerrydyer?feature=mhw4" onclick="window.open(this.href);return false;
http://www.dui-specialist.com" onclick="window.open(this.href);return false;
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jerrydyer
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we'd also like a peak inside yours if poss.
vids.
http://www.youtube.com/user/jerrydyer?feature=mhw4" onclick="window.open(this.href);return false;
http://www.dui-specialist.com" onclick="window.open(this.href);return false;
http://www.youtube.com/user/jerrydyer?feature=mhw4" onclick="window.open(this.href);return false;
http://www.dui-specialist.com" onclick="window.open(this.href);return false;
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MrDan666
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jerrydyer
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sorry just got back here A peak inside? its a little yuckie. I havent gone back and cleaned up yet. shielding etc. did you see that schem? thats it its that neat. LOL not .
that is the circuit im running. Im going to take someones advice and set it back up to where the low input is normal 2204 or close to it and the high adds the additional tubage. yeah thats it.
Ill take a pic of it soon. maybe tonight post manana.
that is the circuit im running. Im going to take someones advice and set it back up to where the low input is normal 2204 or close to it and the high adds the additional tubage. yeah thats it.
Ill take a pic of it soon. maybe tonight post manana.
vids.
http://www.youtube.com/user/jerrydyer?feature=mhw4" onclick="window.open(this.href);return false;
http://www.dui-specialist.com" onclick="window.open(this.href);return false;
http://www.youtube.com/user/jerrydyer?feature=mhw4" onclick="window.open(this.href);return false;
http://www.dui-specialist.com" onclick="window.open(this.href);return false;