Master Volume twin Reverb [Archive] - Music Electronics Forum

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Krong

10-31-2006, 12:14 AM

I need some info folks. I need some info on a SF master volume twin. The serial is a75b211. A layout and schematic would be great. Is this the AA270? Thanks

Tom Phillips

10-31-2006, 01:18 AM

The AA270 did not have a master volume control. I believe the schematic at the following will help.

http://www.schematicheaven.com/fenderamps/twin_reverb_sf_100_schem.pdf

Krong

10-31-2006, 01:27 AM

Thanks much. This looks good but the power supply is different than this one I'm looking at.It has 4 1n5062 diodes each with a .002 cap across it.

Enzo

10-31-2006, 02:14 AM

So go back to Schematic Heaven and try again. Yours is after the AA270 type number scheme. Try the 135 watt ultralinear Twin Reverb

http://www.schematicheaven.com/fenderamps/twin_reverb_sf_135_schem.pdf

Krong

10-31-2006, 04:16 AM

Thanks much. That layout differs from this amp in the rectifier circuit. This one has four 1N5062 diodes with .002 caps across each.

Krong

10-31-2006, 05:47 AM

Now we're talkin! Thanks much.