Internal signs of a solid built amp?

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Member02
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Postby Member02 » Mon Feb 20, 2006 11:10 am

sweet, thanks. took a while, but eventually I got some good info.
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AcidicDreams
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Postby AcidicDreams » Tue Feb 28, 2006 11:42 pm

This should get stickied.... I can't remember the last time I read something so informative...
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Sub dude
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Postby Sub dude » Fri Apr 21, 2006 11:16 am

I have a question if I may. I killed a 4 channel amp by bridging it because it wasnt suppose to be bridged. I opened it up and it looked ok. Where can I look too see what is wrong with it.
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JimJ[VT]
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Postby JimJ[VT] » Fri Apr 21, 2006 5:36 pm

Internal signs of a solidly-built amp?

It doesn't have MOSFETs...:D

[/cheapshot]

I...I...couldn't help it.

;)
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eezip
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Postby eezip » Fri Apr 21, 2006 9:30 pm

Jim, what about BJTs and IGBTs? You could very well amp an amp without FETs - class B QSC PLX and RMX amps don't have any FETs and they're widely regarded as solidly built.

But I digress ... Sub dude, that sucks. There's lots of stuff to check out. I've posted a basic troubleshooting regiment before so check some of my previous posts. Start out by checking resistance between B+ to GND, gate-to-source or collector-to-emitter of transistors in the power supply and the amp, and anode-to-cathode of both the rectifier and catch diodes. You'll likely have little luck if you don't know about electronics. It's not always easy to troubleshoot and fix an amp if you have skills and the schematic. If you're just probing around hoping to get lucky, you probably won't. No offense to you, but amps are complex. Take it to someone know knows what they're doing.
HT: Sony KV-27FS13 | Oppo DV-981HD | Denon AVR-2807 | 7x Cambridge MC100 | Acoustic Research ARPR1010 || Stereo: Dynaudio Audience 42 | Hales Concept 3 prototypes | wouldn't you like to know... :)

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mastarecoil
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Postby mastarecoil » Wed May 03, 2006 11:14 am

Awesome posts guys. This was a great read.
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nate2587
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Postby nate2587 » Sun May 07, 2006 10:31 am

http://ampguts.realmofexcursion.com/Incriminator_Audio_IA20.1/inside1.jpg

this look like a good amp?:cwm18: very very informative thread i learned alot. Thank you

Nate
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eezip
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Postby eezip » Sun May 07, 2006 10:54 am

nate, I'd say not particularly great. But there's only so much you can check out from a little pic. Nonetheless, just because an amp is poorly laid out, and cheap parts chosen, doesn't mean it can't perform well. It looks a lot like Avionixx/Tsunami amps.
HT: Sony KV-27FS13 | Oppo DV-981HD | Denon AVR-2807 | 7x Cambridge MC100 | Acoustic Research ARPR1010 || Stereo: Dynaudio Audience 42 | Hales Concept 3 prototypes | wouldn't you like to know... :)



Home PC: Yamaha RP-U100 | B&W LM-1 | Mpyre 65x || Work PC: Yamaha RP-U100 | QSC AD-S32T | Sony MDR-V600
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DevilDriver
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Postby DevilDriver » Sun May 07, 2006 10:58 am

here is something worth reading if you just want to know the basics of what you're looking at....

http://forum.carstereos.org/f-june-2005-57/t-product-abuse-presented-by-thoraudio-54869

this is a great thread. thank you eezip!
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Jlongo
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Postby Jlongo » Sat Dec 02, 2006 10:14 pm

Very good stuff:) I thouroughly enjoyed reading it, and yes this should be a sticky on this forum and many other's.

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