Will a 2nd Batt. solve this?

[Rockguy475 10+ year member]

At pretty high volume levels when I have my bass turned up my system will cut off or severly drop in volume until I lower my volume knob and then it comes back on. This is only when my bass is turned up and at high volumes but it is becoming annoying.

I believe this is happening because my amp is going into protect mode when it is unable to pull enough voltage to power the sub. So my question is will adding a second battery solve this? I have already done the big 3 with 4 guage wire all around which was a big improvemnt from my stock wires. I have heard from a few people the the JL HD amps will go into protect mode when they stop receving proper voltage so im guessing that this is the problem.

Any help will be apprectiated. Thanks all

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[NASTY08IMPALA 5,000+ posts]

Yea sounds pretty serious...need to check ur voltage when this happens...how were ur gains set ? whats ur electrical consist of now?

 

[Rockguy475 10+ year member]

Yea sounds pretty serious...need to check ur voltage when this happens...how were ur gains set ? whats ur electrical consist of now?

have my gains turned pretty low. like barely up at all for my front and rear channel speakers and about 25% up on the sub channel. Do you think a 2nd batt would solve the voltage drops?

 

[NASTY08IMPALA 5,000+ posts]

have my gains turned pretty low. like barely up at all for my front and rear channel speakers and about 25% up on the sub channel. Do you think a 2nd batt would solve the voltage drops?

Yea they always do but ur problem might b more serious if amp is goin into protect..what kind of wiring do u have ? what kind of stock batt? big 3 done?

 

---------- Post added at 02:38 PM ---------- Previous post was at 02:37 PM ----------

 

How is ur ground?

 

[jco1385 5,000+ posts]

How big is the wire, and how many watts total are you running (all amps considered)?

Edit: Assuming you are using equipment in sig. How big is the wire? Are the subs configured correctly? Maybe the impedance is too low for the amp? Just throwin it out there.

 

[Rockguy475 10+ year member]

Yea they always do but ur problem might b more serious if amp is goin into protect..what kind of wiring do u have ? what kind of stock batt? big 3 done? 

---------- Post added at 02:38 PM ---------- Previous post was at 02:37 PM ----------

 

How is ur ground?

Really not sure if its going into protect mode... It just drops my volume down a HUGE amount suddenly until i lower my volume knob. I did the big 3 with 4 gauge wire all around. Not sure what kind of wire brand i have i got it online from sonicelectronix. I upgraded by battery to an optima yellow top. Pretty sure my ground is good iv had 3 people check it out

 

[NASTY08IMPALA 5,000+ posts]

Really not sure if its going into protect mode... It just drops my volume down a HUGE amount suddenly until i lower my volume knob. I did the big 3 with 4 gauge wire all around. Not sure what kind of wire brand i have i got it online from sonicelectronix. I upgraded by battery to an optima yellow top. Pretty sure my ground is good iv had 3 people check it out

Is the ground sanded to metal and secured sonewhere solid like frame or strut tower bolt ? not sheet metal...what impedance dovu have subs and front stage wired to? did it just start this or ongoing issue since install?

 

[Rockguy475 10+ year member]

How big is the wire, and how many watts total are you running (all amps considered)?just have one amp.... 900 rms (500 on the sub and 100 on each speaker)

Edit: Assuming you are using equipment in sig. How big is the wire? Are the subs configured correctly? Maybe the impedance is too low for the amp? Just throwin it out there.

sub is wired at 2 ohms and the amp is supposed to be able to handle a sub on 1-4 ohms

 

[NASTY08IMPALA 5,000+ posts]

Is the amp warm when this happens? really need to monitor the voltage when this happens

 

[Rockguy475 10+ year member]

Is the ground sanded to metal and secured sonewhere solid like frame or strut tower bolt ? not sheet metal...what impedance dovu have subs and front stage wired to? did it just start this or ongoing issue since install?

ongoing since install. will check on the ground

 

[NASTY08IMPALA 5,000+ posts]

sub is wired at 2 ohms and the amp is supposed to be able to handle a sub on 1-4 ohms

Yes it will that setup should be fine on a single good agm batt...theres somethin goin on

 

[Rockguy475 10+ year member]

Is the amp warm when this happens? really need to monitor the voltage when this happens

i dont have anything to check the voltage with... i may just need to bring it into a shop and have an installer look at everything

amp doesnt get too hot

 

[jco1385 5,000+ posts]

Measure voltage at the battery versus at the amp. See if you're getting a drop.

 

[NASTY08IMPALA 5,000+ posts]

ongoing since install. will check on the ground

Yea get back with results will help all i can ...if u have a dmm check the voltage at the amp and see how bad the drop is at the time this is goin on

 

[NASTY08IMPALA 5,000+ posts]

i dont have anything to check the voltage with... i may just need to bring it into a shop and have an installer look at everything

Go pick up a dmm u can get a decent one for 20 bucks ...its a must in this hobby ..and buy urself a stinger digital volt meter and wire it to the amp ..they r life savers