I tested my battery with my truck off and it rests around but often below 12 volts, when the bass hits with my truck running the voltage at my amp drops to 8-9 volts, so it seems I need a new battery, am I correct?
Member
I tested my battery with my truck off and it rests around but often below 12 volts, when the bass hits with my truck running the voltage at my amp drops to 8-9 volts, so it seems I need a new battery, am I correct?
CarAudio.com Veteran
I wouldn't say so just yet. Check your grounds at your amp. What's the voltage like up front when you are dipping that low in back?
Originally Posted by ducatipaso
CarAudio.com Veteran
It's going to dip bc the truck is off?
09 Cobalt LT
Headunit -Alpine CDA-9887
Front Stage - PHD FB 6.1 PRO SIX M/B, FB 5.1 m/b, FB 1.1b tweets
Highs amp -Pheonix Gold Xenon 100.4 & 200.4
Sub stage - 2 DC XL D4 12s
Sub amp - DC 5.0K
Electrical - Singer 270 alt, big 3 0/1 & 12g ofc audio technix, 1 C&D 400mr
Deadener - 80 mill Audiotechnix deadener
"Trunk hit hard like Kimbo Slice"
TEAM DC AUDIO
CarAudio.com Veteran
Reread the post. He says it's running.
Electrical Weenie
^^^ This.
dave
----------
1999 Buick Park Ave Ultra
Head Unit: JVC KWHDR720
EQ: Audiocontrol EQL
Front Stage: Hybrid Audio Technologies Imagine 5.25
Sub Stage: In process (will be Boston G310)
Amp: Boston Acoustics GTA-704 4 Ch
Rear Fill: Boston SE953 6X9's
Member
I checked the ground yesterday and it's fine, even with the truck off a 12v battery should still be over 12v with the truck off it's around 11.4
I put on
Give it a 2A trickle charge overnight
Member
Yea I thought I'd charge it some too, but if it has a dead cell it'll fall off again and I'll know it's the problem
CarAudio.com Veteran
Ok, what amp is this? Do you have stock alternator and battery? Resting at 11.4 isn't good, but dropping to 8-9V while running is a whole different story. I'm surprised you haven't toasted that amp tbh. What size wiring are you running? Need a bit more info here. It's possible you are simply drawing too much for your electrical. In the meantime charge the battery and see if it will hold a charge. Did this just start happening and it was fine before, or is this a new install?
Member
Audiopipe AP10001D, stock batt and alt, before I just had a Fusion 500 watt amp with 6 gauge wiring, now I have the Audiopipe 1000 watt amp running at 1 ohm with 0 gauge wiring. Before with the 500 watt amp it was fine, no problems but of course 500 watts doesn't demand much.
Mr Dique
go to one of you local chain auto parts stores and get a free battery and alternator check
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