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PPI ProMOS 425 1/2 ohm stable?
Posted: Sat Jul 26, 2008 7:31 pm
by Fishy
I'm about to pull the trigger on an amp I almost bought 20 years ago. Is there anyone familiar with this amp? The seller claims it is 1/2 ohm stable but my ProMOS 2050D wasn't, and I don't think the MOS 50 is either.
By the size of the freakin heatsink I'd say there was plenty of cooling area for an 800 watt A/B. I just would like to make sure. I can't find a manual anywhere on the thing.
Thanks
-Fishy
Posted: Sat Jul 26, 2008 11:10 pm
by JeremyC
Fishy, whats going on man, long time no see.
Hey I can't answer your question, but I can point you to a cool thread you should check out.
http://www.caraudiocentral.net/forums/s ... php?t=9285
Posted: Sat Jul 26, 2008 11:55 pm
by neumann
oops

Posted: Sun Jul 27, 2008 5:22 am
by Fishy
Good Advice Neumman.
Yeah I'm back. One of my customers from work stumbled upon one of my eCoustics threads. He said to himself hmmmm....... Fishy, that sounds like Dwight. I guess he was impressed because now he wants me to design couple systems for his vehicles as well as a home theater.
He is part of a group of regulars that fish with me every Wednesday night. They're from "The Islands", i.e. Trinidad, Jamaica, etc. and all pretty much own theiy're own businesses and would like to see me start my own.
Looks like I've got the investors I've always wanted.
I've got some ideas. How does "SQ Technologies" or "SQ Consulting" sound?
I established a corporation a couple years ago when I bought a commercial fishing boat, have found a 1000 ft^2 brick and mortar with an air conditioned office for $800 a month, and have the backing from people that care.
Your are absolutely correct "You only live once".
Expect me around here with a whole crap load of questions.
- Dwight
Posted: Sun Jul 27, 2008 5:32 am
by Ryan from Ohio
lol, sounds good man.
Can it do it, probably. The question is how long can it endure it...
Posted: Sun Jul 27, 2008 5:54 am
by Fishy
http://ampguts.realmofexcursion.com/PPI_ProMOS-425/
The 25 amp fuse scares me, but because this was a competition amp back in the day I imagine they used a much larger one in their show cars.
-Dwight
Posted: Sun Jul 27, 2008 5:56 am
by Fishy
Ryan from Ohio wrote:lol, sounds good man.
Can it do it, probably. The question is how long can it endure it...
It don't matter. I'll be running two channels at 2 ohms stereo and the other two bridged into 2 Ohms. I was just wondering about headroom. This amp apparently has it.
- Dwight
Posted: Sun Jul 27, 2008 7:05 am
by cargodz
Fishy wrote:It don't matter. I'll be running two channels at 2 ohms stereo and the other two bridged into 2 Ohms. I was just wondering about headroom. This amp apparently has it.
- Dwight
Well then it appears that you don't even need to question the ability of it being 1/2 ohm stable :) but I do remember these being very solid.
Posted: Sun Jul 27, 2008 9:27 am
by Bwcad1
there probably accounting for impedance rise. so when most people say its .5 ohm stable its really not there impedance rise is just high enough to keep it above 1ohm DCR.
Posted: Sun Jul 27, 2008 10:35 am
by loudwagon15s
neumann wrote:try it man, live everydqy like itn yoiurs latst
Now thats not a drunk post, good thing my phone was turned off a 2am last night, i had to get up a 5 lol
