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Peavey transistor cross reference8/6/2023 ![]() ![]() The factory transistors are SJ6343B by Motorola on one channel (this channel has likely been replaced with a newer factory board at some point) and RCA 68271.I'm guessing these are proprietary Peavey transistors that are similar. You do not need that much high voltage rating, 100 Vce is enough, I have used TIP31C in a pinch and they worked very well, both in peavey and Music Man amps, and they can pass all the current 2 or 4 6L6 can need, think almost 1A peaks.Ģ) there are *grid driven* amps, where you have to handle way lower current, only a couple mA, but high voltage, hence the 350V rating, transistors are used like a conventional Long Tail Phase Inverter, replacing the typical 12A*7 used there.īOTH TRANSISTORS ARE INCOMPATIBLE so please check *how* are the 6L6 driven: through cathode current or in the conventional, grid voltage way.ĮDIT2: your transistor labelling suggests it´s the grid voltage driven one, BUT maybe a former Tech (or the Musician himself) replaced it with the wrong type, because he looked at the PV list and grabbed the first one he saw, BOTH are labelled "Tube Drivers" but are very different. On unit has -81 0 81 VDC rails and NPN all TO-3 transistors. ![]() They have a house number on them, making identification difficult. No login, no recharge additionally nay limit. The output tubes are driven by solid state plastic transistors. Read or download Peavey Cross Reference Portions Guide PDF to 24 pages. EDIT: notice that there are two DIFFERENT ways Peavey uses to drive power tubes, with completely different needs, both are NOT interchangeable.ġ) there are *cathode driven* amps, in which case you should use the MJE-15030 I suggested above, based on schematic. 1 I have a Peavey Vintage amp in the shop that's not making any positive peaks. ![]()
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