Aussie GSi
Member
Registered: 5th Aug 02
Location: Sydney, Australia. Drives: Corsa B GSi 16v
User status: Offline
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Hey guys 
I've got a fairly basic question. Sorry, this might sound really, stupidly simple, but I'm not sure.
I've just bought an Alpine V12 (MRV-F340) 4 ch amp.
It is rated at
65WRMS x 4 (14.4V @ 2ohm)
55WRMS x 4 (14.4V @ 4ohm)
35WRMS x 4 (12.0V @ 4ohm)
My question is: What will be the output in my car? I always though it was the 55WRMS figure. It will be run off an Alpine head unit with 4V preouts, running front components and a SVC 12" sub (bridged).
Yeah, sorry for the most probably, simple as question. Wasn't quite sure though.
C
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Aussie GSi
Member
Registered: 5th Aug 02
Location: Sydney, Australia. Drives: Corsa B GSi 16v
User status: Offline
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Don't worry fellas! I've been searcing through the threads. The one below answers my question exactly! 
www.corsasport.co.uk/board/viewthread.php?tid=50361
When my engine is running, I should get 55WRMS through 4 channels (in my case, 55WRMS x 2 + 130WRMS x 1 - sub ). When the engine is off, I should get the 12V figure (35WRMS).
Thus proving, you should always search through the threads first! Dumb shitt I am!
Thanks anyway fellas.
C
[Edited on 11-03-2003 by Aussie GSi]
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ultim8DTM5
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Registered: 18th Jun 02
Location: Sydney, Oz
User status: Offline
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Hahah, well done and it took you all of 22 minutes!
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Aussie GSi
Member
Registered: 5th Aug 02
Location: Sydney, Australia. Drives: Corsa B GSi 16v
User status: Offline
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 I'm a quick lad Pete.
C
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Philip Lee
Member
Registered: 28th Jan 03
Location: Brisbane Australia Drives: Corsa C SRI 1.8 MY03
User status: Offline
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quote:
When my engine is running, I should get 55WRMS through 4 channels (in my case, 55WRMS x 2 + 130WRMS x 1 - sub ). When the engine is off, I should get the 12V figure (35WRMS).
ar actually, you are right & wrong Aussie. these are the figures you should get but when the amp is installed in the car, the voltage maybe lower due to many reasons (eg. quality of cable, health of battery & alternators etc) therefore the 12V figure would be a better indication.
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Aussie GSi
Member
Registered: 5th Aug 02
Location: Sydney, Australia. Drives: Corsa B GSi 16v
User status: Offline
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Thanks man!
Yeah, I've got a Autometer Voltmeter gauge in my car. Usually when I'm driving, it'll sit just under 14V. So I should get slightly under 55WRMS, yeah? I want to replace my battery with an Odyssey at some point.
C
[Edited on 13-03-2003 by Aussie GSi]
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Aussie GSi
Member
Registered: 5th Aug 02
Location: Sydney, Australia. Drives: Corsa B GSi 16v
User status: Offline
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Hey guys.
Approximately how much do you think an uprated alternator would cost (in Aussie dollaz mate)? As I said above, my voltmeter sits just under 14V (around 13.5V). I plan to replace my battery at some point in the future.
I'm was just asking, cos I wanted to give my amp as much life as I can.
Another question (as I'm a dumb ass). 4V preouts. My deck has 3 of them (front, mid, rear - Alpine CDA-7894RB). With these, doesn't that mean that my amp will have enough power to run 55WRMS all the time anyway? I'm sorry, I don't know. Do these add 4V on top of whatever my engine/battery puts out? Is that true? If so, I should always have enough power, yeah?
Thanks dudes
C
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Aussie GSi
Member
Registered: 5th Aug 02
Location: Sydney, Australia. Drives: Corsa B GSi 16v
User status: Offline
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Infact, if that's true, using that law, my amp should output more than 55WRMS, yeah? Cos with the engine running, I'll have (13.5V + 4V) 17.5V? Is that right?
I've just done one of two things. I've either:
*shown how smart I am, by working things out on my own
OR
*shown how much of a dumb twat I am, by wasting everyones time, and blabbing on, spinning incorrect crap!
Hahahaha, I'm hoping it's the first, but thinking it's probably the latter!
C
[Edited on 13-03-2003 by Aussie GSi]
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Aussie GSi
Member
Registered: 5th Aug 02
Location: Sydney, Australia. Drives: Corsa B GSi 16v
User status: Offline
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Nope! Just proven I'm a dumb twat! Preouts don't give the power. Stupid tard!
C
P.S. Please direct all payouts towards someone else.
P.P.S. Pete, grace me with your words of wisdom! It's the least you can do for abandoning us for our next cruise, boy wonder!
[Edited on 13-03-2003 by Aussie GSi]
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Philip Lee
Member
Registered: 28th Jan 03
Location: Brisbane Australia Drives: Corsa C SRI 1.8 MY03
User status: Offline
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Aussie, you're right, pre-outs don't give power. in the past the signal was around 1V from pre-out, many manufacturers have since pumbed them up to 4V or even 5V to reduce distortion effected by other electric equipments on a car. pre-outs only output signal to the amp.
[Edited on 13-03-2003 by Philip Lee]
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ultim8DTM5
Member
Registered: 18th Jun 02
Location: Sydney, Oz
User status: Offline
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...or the Eclipse CD8061 which has 8-16V output variable (upon line driver...)
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