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Messages - markorock37

#31
Amplifier Discussion / Upping caps Peavy M2600
March 02, 2013, 12:05:37 AM
I have a Peavey M2600 power amp on the bench right now with low output. Guessing the main caps are shot. They are 5000uf 55v. Having trouble finding these but I do have some 6800uf 80v will those be okay? Thanks.
#32
I did find another transformer with the right voltage I can use if neccessary. But 'Ill draw up the current configuration and try to get that up here this weekend.
#33
Amplifier Discussion / Reducing transformer voltage
June 04, 2012, 08:23:11 PM
Building a solid state guitar amp, everything is ready to go except my rail power is too high. I'm running 52 volts and would like to get around 25-30 volts. I'm using a 36 volt power supply w center tap into a full wave rectifier and two 2200uf 50v caps. What's my best solution? Thanks
#34
Thanks a ton! Just about have everything soldered except those and a power switch and led. Should be quite the little jammer!
#35
Building a chipamp based on a LM1875. I'm using 2200uF caps in the amp circuit and a 34.5vac transformer. Really the only question I have is what size filter caps to use after the rectifier.
#36
Amplifier Discussion / Re: Supplier for IRF230's?
March 13, 2012, 09:49:02 PM
We opted to let it die in peace. The nice thing is its modular so the power amp can be switched out very easily should he find another one. Not worth trying to fix when another can be had for about the same price. I'll offer to waive his bench fee and add $20 to keep it for parts :)
#37
Amplifier Discussion / Re: Supplier for IRF230's?
March 13, 2012, 08:36:33 AM
Here's the PDF. It took me a minute just to find the power amp page..so I see where your coming from..lol.

#38
Amplifier Discussion / Re: Supplier for IRF230's?
March 12, 2012, 10:27:14 PM
Yep definitely thought about taking it off his hands! But heres the schematic. I have a PDF file too.


#39
Amplifier Discussion / Re: Supplier for IRF230's?
March 12, 2012, 12:14:41 PM
Yeah, I've dealt with them a few times and its always pleasant. I let my customer know his parts are $$$ he's on the fence with getting it repaired because he can get another one for $150. He's thinking about it and will let me know. I'd like to get some progress on it in the next day or so and see if I can't get it buttoned up quickly. BBL
#40
Amplifier Discussion / Re: Supplier for IRF230's?
March 12, 2012, 12:01:17 PM
Just put a request in for a schematic with Gene over at Peavey. I'll get it posted later tonight when I get out of work.
#41
Amplifier Discussion / Re: Supplier for IRF230's?
March 11, 2012, 06:25:09 PM
I have quite a few MJI15004's too.
#42
Amplifier Discussion / Re: Supplier for IRF230's?
March 11, 2012, 06:20:38 PM
Also have quite a few MJI5003's still not sure if those would work - 140V 250W.
IRF230's are 200V 75W. I didn't notice it until now, 2 of the 4 transistors in there were RFM10P15's and not IRF230's.
#43
Amplifier Discussion / Re: Supplier for IRF230's?
March 11, 2012, 06:12:05 PM






Here ya go, its a Peavey Megabass. Already have a limiter. IRF230's were soldered in through a heatsink, even the screws were soldered in to the board.
#44
Amplifier Discussion / Re: Supplier for IRF230's?
March 10, 2012, 07:32:26 AM
Found IRF250's at $6.50 ea, will those work?
#45
Amplifier Discussion / Re: Supplier for IRF230's?
March 10, 2012, 07:06:54 AM
I never mounted a transistor like that, a pic would be great.