I have pleny of components and a good soldering iron. If there are some key components in the circuit I can socket them for testing.
I'll give...
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Fender Princeton Chorus - Taming the drive channel
I know 90's Fender solid state drive channels are an unpopular topic.
I know easiest solution is a different amp or using a stand alone preamp. ...
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thanks JPB that schematic is clearer.
Bonus question: does anyone have Fender service bulletins? there was one for this amp that said to change...
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the second link worked. thanks again guys for such a quick response.
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thanks guys. Yeah first fender sent me the Power Chorus schematic, then the Princeton Chorus DSP, then they said they didn't have the Non DSP version.
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Looking for Princeton Chorus schematic
Emailed Fender, they only have the DSP version. I'm looking for the first version Princeton Chorus amp schematic. Anyone have a pdf copy?
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dang that means I have to set up the whole circuit before I can test the heaters. id rather set up the heaters, then I can check my voltage out of the rectifier....
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so if I hook it up per the original schematic where would I hook up the line with the question marks. my project is to clone the power amp section of bassman...
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this is what I came up with. I know enough that the heater draw of the filaments have to be equal when in series, but I don't know if theres anything else...
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I don't have that plug or any of the original circuitry. I'm going to run fused and switched 117v to the blk/rd winding. If I use 3 of the 4 sections I will...
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Just checked again found a pic that shows one end of each 9.4v winding not connected. Therefore it was running on the center taps at 4.5v maybe paralleled...
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No I just have a pic from before I gutted it, all heaters were hooked up in parallel, but how they were hooked up to the pt I can't see. Someone already hacked...
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I don't have the second transformer. Just t379. blk/red gets 117v. Then with a multi meter and no load I measure 9vac on each secondary on the left side,...
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help with heater supply
I have an interesting amp Bogen J1623, there are 2 center tapped 9vac windings for heater filament supplies but the amp runs all 6.3v octals. The amp was...
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In case anyone is searching, only took me 5 years to find.
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They are for stand by. You can wire it with just a power switch but I have added a stand by to let the tubes heat up and the caps charge up.
If you...
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yeah i could throw a couple red LEDs in the eye sockets. that would be really heavy metal, but that doesnt match the tone of the amp, i use a hollow body...
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Works like a champ. Thank you very much.
and that concludes the electronics portion of this build. On to the wood housing.
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Much appreciated. Im not learned enough to know but will this change the tone any?...
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Yeah that made the volume at zero decrease abit but not completely. should i oust that 1k or find a lower value that eliminates the volume at zero?...
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