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Volts

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Topic review
   

Expand view Topic review: Volts

by Bwcad1 » Fri Sep 02, 2005 8:21 am

ground issue i will check tonight. the gains on the amp are set about a quarter from low and the lpf is on with no bass boost. also i measured the ohms on the amps and they were at around 3.8-3.9ohms

by GlassWolf » Fri Sep 02, 2005 7:46 am

-ground issue
-amp gain set too high
-load on amp too low

one or two of the above

by Bwcad1 » Fri Sep 02, 2005 4:26 am

ok guys i upgraded the alternator last night and added a 1/0 power wire from alt to battery didnt have time last night to do the ground i will today. but my main question is im still getting some sub cut out. the sub cuts out components get incredibly loud? could that be because i didnt upgrade the ground or is there something else it could be?

by Bwcad1 » Thu Sep 01, 2005 9:09 am

looks like im going with 1/0

by GlassWolf » Thu Sep 01, 2005 9:07 am

they're both wrong. 200A is more than the capacity of 4AWG at peak by 25%. You need to use 2AWG minimum for a 200A alternator unless you're absolutely sure you'll never draw more than 150A of current between the car and the stereo, at any time.

by Ryan from Ohio » Thu Sep 01, 2005 8:58 am

I would lean towards 1/0 since 2 Ga connectors are so hard to find...

by Bwcad1 » Thu Sep 01, 2005 8:57 am

Well I talked to the stereo guy around here and Devin at sinister audio and both said 4 gauge would be fine. Im also just going to add the wire not swap factory and new when I do the big 3. Anyone done this on a blazer? How difficult is it? Not worried about the alternator when my original died my truck died at AutoZone and I swapped it out right in the parking lot there lol.

by lotas » Thu Sep 01, 2005 8:39 am

Bwcad1 wrote:lol no um putting the new alternator in tonight and im upgrading all the wire to 4 ga any suggestions? tips? how much of a pain in the ass is this going to be?
200amp alt might want larger than 4ga, more like 2ga or 1/0 ga

Isn't 4ga capacity 150amp? I dont know, someone correct me.

by GlassWolf » Thu Sep 01, 2005 8:39 am

if the voltage drops to 10VDC, there are two reasons.
one is a bad stock alternator, or two is a bad battery (or both) since with a normal lead acid battery, if it's drained below about 10 volts, you're just about guaranteed to have irreversable damage to the battery cells, so it'll never go to 12 volts again.

anyway, fix is to install the new alternator, and while doing so, upgrade the "big 3" with 2AWG cable (for a 200A alt.) and replace the old battery with a new high-CCA starter battery (from auto zone or sears etc) or switch to an optima at that point. the optima deep cycles will allow you to fully "deep cycle" the batteries to 0 volts and recharge them without killing the batteries. That's one of their main benefits.

by Bwcad1 » Thu Sep 01, 2005 4:34 am

lol no um putting the new alternator in tonight and im upgrading all the wire to 4 ga any suggestions? tips? how much of a pain in the ass is this going to be?

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