head unit

[yamaha123]

have a 1000w amp and 1500 w sub and a old kenwood head unit when turned up to over 20volume the sub cuts in and out would this be a stuffed head unit?

[fazza81]

2 reasons. Amp overload or not enough power to the amp(bigger wiring)

[yamaha123]

yer i dont think so because the wring is for 1000w amp and i had it in my old car worked fine but ths car its dodgey maybe a connections dirty or somethin

[short stuff]

i would say its bad earth to your amp or head unit

[stewy 60 series]

just try scraping the paint off or earthing it some were else and check your remote wire to make sure its connected probaly

[money_killer]

or a blown sub woofer.

[DamTriton]

2.5 kW of audio

[money_killer]

2.5 kW of audio

hoon

[-Scott-]

So how far up the dial is "20" - is that near max, or somewhere lower? I mean, Spinal Tap had amps which went to 11 - are we talking the same scale?

Do you have a capacitor on the amp input?

My first guess is that the power supply is dropping too low at volume, so the amp is shutting down.

Or not.

[yamaha123]

yer sub cuts out at 19 then only speakers work im thinking theres only 6 volt getting to the amp and im also thinking my dual battery set up is rooted how do u test if a dual bat solinoid is working properly?