Hello All, So I was surfing around the net looking at different amp companies because I was bored. I was browsing around JL's site, and came across this tid bit of info: Until now, the accepted approach for building high-fidelity Class A/B amplifiers has been to utilize "Complementary" out...

So not really knowing where the output FETs are, I took some pics of what I think are the output FETs. These are the only ones that would make any sense on being the output FETs: http://lh3.ggpht.com/_uOFuamLKHHk/S9Slq72Hs-I/AAAAAAAAA48/D50qzriIqOo/s800/Output%20FETs1.jpg http://lh6.ggpht.com/_uOFua...

You should be able to find a higher capacitance input capacitor. This is the one we often use for the M and MS amps, but I am not sure if it's the same size or not: http://www.digikey.com/scripts/DkSearch/dksus.dll?PName?Name=493-1543-ND&Site=US Ok, so I took a ruler and measured to see if I co...

More capacitance is definitely better as long as the voltage, temperature rating and size all match. You should be able to find a higher capacitance input capacitor. This is the one we often use for the M and MS amps, but I am not sure if it's the same size or not: http://www.digikey.com/scripts/Dk...

I should clarify... I tested the gate resistors, not the transistors them selves. I should have a chance to work on the amp some more tomorrow and pull the transistors to test them with a 9v battery. Should I pull all the transistors or just the six for the power supply? I will start with the fets a...

I guess I should ask if the brand matters with the MOSFET's or not? If it does, then I will only order the specific brand. Thanks!

BTW, Fet = MOSFET, which is just another kind of transistor, usually found in the powersupply, while BJTs are more commonly in the output side of the amp. Other brands also use MOSFETs for the outputs as well, which doesn't sound as good in many people's opinion. If your amp is blowing fuses, odds ...

The last photo here is what I think are the "fets" is this what they are (the first 3 from the right, the only group of 3)? If so where do I order them? I guess I will just keep answering my own questions :D I found this: http://search.digikey.com/scripts/DkSearch/dksus.dll?WT.z_cid=ref_a...

MOAR PIKTARS!! So I decided to remove all my caps today just to check to see if they were leaking on the bottom. Nope not for me. I am going to replace all these caps just because they are 7 years old, and the amp got HOT at times, so it can't hurt it to replace all the caps. What's the likely hood ...

PICS! http://lh5.ggpht.com/_uOFuamLKHHk/S9F0kunBIMI/AAAAAAAAA2Q/tticiC7lgbw/s800/Internals1.JPG http://lh6.ggpht.com/_uOFuamLKHHk/S9F3hWT__3I/AAAAAAAAA2c/B52oiJMmbOk/s800/Internals2.JPG http://lh3.ggpht.com/_uOFuamLKHHk/S9F3hrTXBVI/AAAAAAAAA2g/IIT36kTieIQ/s800/Internals3.JPG http://lh3.ggpht.com/_uO...

i dont think they are too hard to fix...i am worthless with a iron, but a few guys on the forum have fixed them relatively easily. they might not be blown. but every time i have had my amp blowing fuses on turn on....thats what it has been maybe some one can chime in on how to test them with a mult...

they are electronicly very similer to the xs amps...which i have blown a ton of! i would suspect all your power supply fets and the gate resistors for them are blown :( Is this a hard repair or even repairable then? Judging from the sad face I am guessing it will be difficult :( they serve the same...

Hello All first post! So I have finally gotten around to trying to figure out what is wrong with my tantrum 600.4 amp that I have. Here's it's symptoms. When I had it installed in my car as soon as I turned it on, it would blow both of the 30amp fuses in the amp itself. I then removed the amp from t...