Part Number Question On Tantrum 1200.1

dako · Post by **dako** » Mon Sep 22, 2008 1:32 pm

Hey Guys - I just got my 1200.1 back from PG today and there was a part number they replaced that I'm not familiar with. It's part U102. Just wondering if anyone out there might have an idea what that is, just so I can keep track of what's been replaced on the amp. Thanks!

dako · Post by **dako** » Tue Sep 23, 2008 6:11 am

Did some digging around online last night and couldn't come up with anything. Does U102 refer to a position on the circuit board maybe? I know...I've got way too much free time on my hands. Would be nice to know what exactly was repaired. I know when I called PG, they were saying how "U102 was replaced, part cost was $53.00, etc..."

Post by **stipud** » Tue Sep 23, 2008 6:52 am

I think U102 is the Tripath chip. It would be the name of the location on the circuit board.

dako · Post by **dako** » Tue Sep 23, 2008 7:20 am

Ahhh! Thank you. I was hoping that's what they were referring to.

rolandk · Post by **rolandk** » Tue Sep 23, 2008 7:32 am

U102 is indeed the Tripath chip, they must have found a secret stash!

dako · Post by **dako** » Tue Sep 23, 2008 9:19 am

And for that, I'm seriously grateful. I was thinking after sending it in and getting a general consensus here of what might've been wrong with it, I'd have a really stylish looking doorstop on my hands.

Me-262 · Post by **Me-262** » Wed Sep 24, 2008 5:46 pm

Hey dude, did you still need my 1200.1 ? You haven't checked your PM's in forever

Delftenaar · Post by **Delftenaar** » Thu Sep 25, 2008 1:33 am

Does anybody know if this 1200.1 produces the same power at 2 Ohm as 4 Ohm

Considering it is only rated at 4

Post by **stipud** » Thu Sep 25, 2008 5:45 am

Yes, it will produce the same wattage at 2 ohms BUT it will draw more current, and get much hotter, and it won't sound as good.

Delftenaar · Post by **Delftenaar** » Thu Sep 25, 2008 6:28 am

By 'it doesn't sound as good' I guess you mean the damping

Post by **stipud** » Thu Sep 25, 2008 7:15 am

Lower damping is a small part of the issue. Since you are running the amp below its rated impedance, you will be stressing it. I would expect to see much lower THD as well (not that that really matters on a subwoofer). Having a fan cool it may be a good idea.