SJ 83100 transistor data sheet

[bluemoon]

can some1 help me with data or datasheet for this transistor, used in PEAVEY bandit. i tryed to find on web, bat only 100V 3A in TO3 data is available, for me not enough, need some more data pls
tnx

[Twist]

That's a Peavey in house part number. Look up MJ-15015, or 2N3055A.

[Enzo]

STick with the MJ15015 for this. That moto part will share with other transistors in the circuit much better than the 2N3055.

If you look over at www.ampix.org in the Enzo gallery, there is posted the Peavey Semiconductor master cross reference guide. Very useful if you service much Peavey.

[bluemoon]

tnx a lot for replay. the problem is with a brand new clone of bandit. i tryed to measure output power. with a 4Ohm resistor and i hardly "squeezed" out 20W, supplied with +-35V. i even get a schematic of this clone, and there is this 83100, but inside amp is MJ802 and his complementar. those are 30A transistors, and i can hardly imagine two small signal transistors have enough capability to drive them. therefor i needed some more info about 83100, because i can try to "improve" my friend's amp.
if someone have experience with "swaping" original transistors with some other please let me know. i will try with MJ15015.
ps
i can't register on ampix, i get confirmation code error, but there is no confirmation code on screen. this is not a first place where i'm registered, and i'm very suprised. tnx anyway

[Enzo]

Send me a personal email with Peavey Semiconductor guide as the subject line.

The MJ15015 is the factory spec for the 83100. 70483100 is their part number for it - it is a house number for MJ15015. If this is a clone and you have its schematic, have you compared it to the Peavey schematic?

[Steve Conner]

You actually cloned a Bandit? That's hardcore

I've built a few solid-state amps, and there are plenty of other experienced people here.

Douglas Self has power amp circuits in his book that use the MJ802 and its complement, the MJ4502. He uses a MJE340 and MJE350 to drive them.

The MJ15015 is probably much the same, gain-wise, as the 802 or 4502. You can get newer designs of audio power transistors that need less drive, such as the MJL3281 and MJL1302, but they only come in TO-247.

[Enzo]

I was not aware you have to register just to look at the images.

I post a number of schematics and other things there so others can download them.

If you are having trouble with it, go over to the LOBBY section here and post a note to tboy about it. He is our host.

[bluemoon]

i'm very suprised with so many helping hands, tnx a lot. maybe my english is not well, and somtime i don't expess myself clear. so, i don't clone BANDIT, in my country you can buy clon, that was the reason of my interesting to "improve" it. i'll post results
best regards for all

[Enzo]

I see. Then how certain are you that the internal circuitry of this clone is the same as the original Peavey amp?

I have attached the Peavey Semiconductor Guide here for you, but if teh circuits are not the same, then merely changing transistors won't be enough.

[bluemoon]

tnx for this table. i don't won't to waste your, and other members time, i get a pdf document with schematic for this amp, but it is about 1.5M large, so i can't upload it here. i don't have schematic from original bandit, but i compare it with some other peavey amps, like studio 50, and it looks very similar especialy output stage. other part of amp is different, but this part is allmost same (difference is in input differential amp, in studio 50 with transistor, in "my" case is OP). if i find a way to convert this pdf to some smoler format i will upload it.