Jump to content

Recommended Posts

I have the big 3 done, double runs of 0ga, sundown wire 270 alternator , m4b amplifier 3 3400 xs battries in trunk volts are at 14.3 but when up loud bass note hits and volts drop to 10  showing on bass control knob....p.s. Digital design 9900 series subs are wired to .5 ohm

 

Do I need more xs battries ???

Share this post


Link to post
Share on other sites

Back the gain down

Sounds like its clipping which will make it draw hard on the electrical

.5 is hard enough as is.

Share this post


Link to post
Share on other sites

270 alt made by who ?  Is this at idle? id expect, or does it do it at rev? Who made the alt? And be honest please.  What do you see when you rev?

10v? jesus.... thats horrible. Id hate it anyway....

Share this post


Link to post
Share on other sites

You have a loose ground somewhere barely making contact. 

Share this post


Link to post
Share on other sites

Sounds like your running that amp way to hard for the electrical you have. Try adjusting your gains. That or you got some bad wires or batts. I would try the gain first see if that helps. You also gotta remember at a .5ohm that amp is super inefficient. 

Share this post


Link to post
Share on other sites
15 hours ago, old school said:

I have the big 3 done, double runs of 0ga, sundown wire 270 alternator , m4b amplifier 3 3400 xs battries in trunk volts are at 14.3 but when up loud bass note hits and volts drop to 10  showing on bass control knob....p.s. Digital design 9900 series subs are wired to .5 ohm

 

Do I need more xs battries ???

Sounds like a bad ground somewhere. Does it go down only when the certain note hits or voltage look all jumpy when your going up on the volume knob? what brand alt are you running?. Do you have the battery grounded off in back?

Share this post


Link to post
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now

×