Orion 222sx

mike49504 · 31st January 2010, 04:28 AM

I got this amp in on trade for fixing another one. Im wondering since i have to pretty much rebuild the amp since a crap load of parts are missing.

Wondering if theres anyway to mod this amp?

Like make it more watts rms just wanna do a amp project and see what i can come up with

Any info would greatle be appericated

mike49504 · 31st January 2010, 06:15 AM

Ok i decided to keep it original. Im almost done rebuilding the power supply.

My question is theres 6 fets in the amp. 3 on one side 3 on the other.

So on one side it goes 3 irf3205's then a fep16ct then a 2n6491

On the other side it goes 3 irf3205's a fen16dt then does it go 2n6491 or 2n6488?? since that was cut off the board

Perry Babin · 31st January 2010, 06:21 AM

Measure the resistance from the emitter pads of the 6491s on one side to the emitter pads on the other side. When you find pads with ~0 ohms to the 6491 emitter pads, you've found the 6491 locations for the missing transistors.

mike49504 · 31st January 2010, 06:42 AM

Ok perry do you know what size fuse goes inline with the B+ wire?

I opened up the fuse holder and found the best fuse ever a fricken bolt for a fuse LOL

Perry Babin · 31st January 2010, 06:51 AM

I don't know what the original was but a 20 amp should be sufficient.

31st January 2010, 04:28 AM	#1
mike49504 diyAudio Member Join Date: Sep 2006	Orion 222sx I got this amp in on trade for fixing another one. Im wondering since i have to pretty much rebuild the amp since a crap load of parts are missing. Wondering if theres anyway to mod this amp? Like make it more watts rms just wanna do a amp project and see what i can come up with Any info would greatle be appericated

31st January 2010, 06:21 AM	#3
Perry Babin diyAudio Member Join Date: Nov 2003 Location: Louisiana	Measure the resistance from the emitter pads of the 6491s on one side to the emitter pads on the other side. When you find pads with ~0 ohms to the 6491 emitter pads, you've found the 6491 locations for the missing transistors. __________________ Links >> Basic Car Audio Amp Repair --- Basic Car Audio Electronics --- Basic Transistor Testing --- Basic Switching Power Supply Design --- Basic Computer Skills << Links

31st January 2010, 06:51 AM	#5
Perry Babin diyAudio Member Join Date: Nov 2003 Location: Louisiana	I don't know what the original was but a 20 amp should be sufficient. __________________ Links >> Basic Car Audio Amp Repair --- Basic Car Audio Electronics --- Basic Transistor Testing --- Basic Switching Power Supply Design --- Basic Computer Skills << Links

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31st January 2010, 06:15 AM	#2
mike49504 diyAudio Member Join Date: Sep 2006	Ok i decided to keep it original. Im almost done rebuilding the power supply. My question is theres 6 fets in the amp. 3 on one side 3 on the other. So on one side it goes 3 irf3205's then a fep16ct then a 2n6491 On the other side it goes 3 irf3205's a fen16dt then does it go 2n6491 or 2n6488?? since that was cut off the board

31st January 2010, 06:42 AM	#4
mike49504 diyAudio Member Join Date: Sep 2006	Ok perry do you know what size fuse goes inline with the B+ wire? I opened up the fuse holder and found the best fuse ever a fricken bolt for a fuse LOL

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