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Ali Saeed
Goo Roo
WA
UZZ31

Posts: 2342
Reg: 09-2007

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 Monday, May 24, 2010 - 12:51 am, by:  Ali Saeed (Ali) Quote hilighted text Edit Post Delete Post Print Post   View Post/Check IP (Moderator/Admin Only) Move Post (Moderator/Admin Only)
i need to know much current everything on the stock car draws. im looking to upgrade my alternator as i will going with a 1600 RMS system, which would draw 111 amps..should i get a 180 or 200amps alternator?
Michael James
TryHard
Queensland
V8 UZZ31 Limited

Posts: 234
Reg: 07-2005

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 Monday, May 24, 2010 - 08:26 pm, by:  Michael James (Wildwizard) Quote hilighted text Edit Post Delete Post Print Post   View Post/Check IP (Moderator/Admin Only) Move Post (Moderator/Admin Only)
Pretty sure the stock ALT is 120A so if you work out how much more continuous current your new stereo will add to that and buy that size.
Ali Saeed
Goo Roo
WA
UZZ31

Posts: 2351
Reg: 09-2007

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 Monday, May 24, 2010 - 10:32 pm, by:  Ali Saeed (Ali) Quote hilighted text Edit Post Delete Post Print Post   View Post/Check IP (Moderator/Admin Only) Move Post (Moderator/Admin Only)
stock alternator is 90/100amps. unless sc400 and uzz31 have different alternators
Aiden Cheese
TryHard
QLD
Soarer jzz30

Posts: 398
Reg: 09-2009

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 Monday, May 24, 2010 - 11:03 pm, by:  Aiden Cheese (Chillpen) Quote hilighted text Edit Post Delete Post Print Post   View Post/Check IP (Moderator/Admin Only) Move Post (Moderator/Admin Only)
Well the old system probably drew a few amps too considering it would probably have been a 6.1 with two amps right?
Ali Saeed
Goo Roo
WA
UZZ31

Posts: 2356
Reg: 09-2007

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 Tuesday, May 25, 2010 - 01:58 am, by:  Ali Saeed (Ali) Quote hilighted text Edit Post Delete Post Print Post   View Post/Check IP (Moderator/Admin Only) Move Post (Moderator/Admin Only)
6.1 with two amps yes. but i wonder what they are rated at. i dont think fronts would be more than 20watts rms and sub maybe 50-60rms?
Boris Siljanoski
DieHard
Western Australia
Soarer GZ20 TT

Posts: 916
Reg: 11-2007

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 Tuesday, May 25, 2010 - 03:14 am, by:  Boris Siljanoski (Z2tt) Quote hilighted text Edit Post Delete Post Print Post   View Post/Check IP (Moderator/Admin Only) Move Post (Moderator/Admin Only)
111 Amps (or thereabouts) is the potential current draw if your amps in total are rated at about 1600w, remember you have a volume knob.

If your going to have it cranked upto full volume every day you drive, aswell as listen to such music that demands lots of excursion very frequently, then you may be getting close to the 111w Potential current draw.
Ali Saeed
Goo Roo
WA
UZZ31

Posts: 2358
Reg: 09-2007

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 Tuesday, May 25, 2010 - 04:01 am, by:  Ali Saeed (Ali) Quote hilighted text Edit Post Delete Post Print Post   View Post/Check IP (Moderator/Admin Only) Move Post (Moderator/Admin Only)
its 1600w continuous, NOT peak
Matt Shields
TryHard
VIC
V8

Posts: 116
Reg: 01-2010

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 Tuesday, May 25, 2010 - 01:56 pm, by:  Matt Shields (Smokeyvip) Quote hilighted text Edit Post Delete Post Print Post   View Post/Check IP (Moderator/Admin Only) Move Post (Moderator/Admin Only)
just go the biggest aftermarket alternator you can find/afford, as that is the only way to safely keep power up to your system.

and it is probably cheaper than the alternative anyway, which is a deep cycle battery like an optima yellow top, and a capacitor.

that being said, my last car had a 1500wrms system in it, and a 90amp alternator. even with the aircon on and the HID's on, it would have to be turned up VERY loud at the traffic lights to get the lights to dim.

maybe just see how you go to start with?
Boris Siljanoski
DieHard
Western Australia
Soarer GZ20 TT

Posts: 919
Reg: 11-2007

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 Tuesday, May 25, 2010 - 02:15 pm, by:  Boris Siljanoski (Z2tt) Quote hilighted text Edit Post Delete Post Print Post   View Post/Check IP (Moderator/Admin Only) Move Post (Moderator/Admin Only)
Stop worrying about alternators, if other people on here aren't having much problems even cranking it up extremely loud I doubt you will.

I would not know why you would like to turn it up above the continuous output, you'll force the speakers into clipping and fry your amps and what not.

Only thing you might have a problem with is the lights dimming at night while your blasting the neighborhood with 1600W of power, and if the case that you really want your headlights not to dim while your system is blowing your bumper and body kit off, then you can either install a capacitor or a different alternator.
Peter Nitschke
Junk Filterer
South Australia
UZZ30 UZZ31

Posts: 11605
Reg: 11-2004

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 Tuesday, May 25, 2010 - 03:15 pm, by:  Peter Nitschke (Pen) Quote hilighted text Edit Post Delete Post Print Post   View Post/Check IP (Moderator/Admin Only) Move Post (Moderator/Admin Only)
Boris Siljanoski wrote on Tuesday, May 25, 2010 - 02:15 pm:

would not know why you would like to turn it up above the continuous output, you'll force the speakers into clipping and fry your amps and what not.

The amp will clip which then damages the speakers.
Ali Saeed
Goo Roo
WA
UZZ31

Posts: 2360
Reg: 09-2007

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 Tuesday, May 25, 2010 - 04:52 pm, by:  Ali Saeed (Ali) Quote hilighted text Edit Post Delete Post Print Post   View Post/Check IP (Moderator/Admin Only) Move Post (Moderator/Admin Only)
nah ofcourse i dont want to turn it above the rated output. if im going to by $500 speakers im going to take care of them..any who, ill just get a 180amps one and be done with it
Matt Shields
TryHard
VIC
V8

Posts: 121
Reg: 01-2010

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 Tuesday, May 25, 2010 - 07:00 pm, by:  Matt Shields (Smokeyvip) Quote hilighted text Edit Post Delete Post Print Post   View Post/Check IP (Moderator/Admin Only) Move Post (Moderator/Admin Only)
can't hurt, let us know how you go sourcing one and cost etc. i nearly went down the big stereo path....but decided against it.
Boris Siljanoski
DieHard
Western Australia
Soarer GZ20 TT

Posts: 920
Reg: 11-2007

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 Tuesday, May 25, 2010 - 08:40 pm, by:  Boris Siljanoski (Z2tt) Quote hilighted text Edit Post Delete Post Print Post   View Post/Check IP (Moderator/Admin Only) Move Post (Moderator/Admin Only)
Save yourself the money on the alternator first, install the speakers and then if you need an alternator get one.

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