amp wont turn off

hello. i got a kicer zx350.4 (newest model). when i take out the key out of the ignition, by headunit turns off but the kicker amp doesnt. it stays on for a couple of seconds. and before it turns off i hear a descending whining noise (first it get loud then low then dies). after that noise a couple after the amp turns off. also when i accelerate, i hear a whining noise coming from the dash or some where in front of me. what can be the causes of these symptoms?

Sounds like it might have something to do with the remote turn on setting.  Newer Kicker amps have a 3 remote turn on settings: +12volt, DC, and signal.  If you had it set to +12 volt or DC offset the amp should turn off once you kill the power.  If you have it set to signal and you haven't MATCHED the input gain with the headunit that could be the cause of the problem. Look into that. Either switch it to +12volt or adjust the input gain.  The whining noise seems like typical powerline noise caused by running a signal lead to close to a high current power line, although I could be wrong. 

I have not seen one of the new Kicker amps with multiple methods of turn on.  But having the amp set to signal sensing would tend to turn off exactly as yours is.  Look into that solution before removing the remote wire from the amp.

yes! it turned off. i switched it to 12+ volt. i heard a whine when i accelerate. its not bad as the first time. does anyone know the causes of whining sound?

If you turn the gain all the way down, does the whining go away?

imupabove wrote: yes! it turned off. i switched it to 12+ volt. i heard a whine when i accelerate. its not bad as the first time. does anyone know the causes of whining sound?

Seems like powerline noise or AKA engine noise.  This is not a rare problem.  First remove the deck and remove the RCA cables from the back.  Then, get an extra pair of RCA's and connect them directly to the amp without running them along the side of your car. Should only take a minutes. See if the noise goes away.

calitech247 wrote: imupabove wrote: yes! it turned off. i switched it to 12+ volt. i heard a whine when i accelerate. its not bad as the first time. does anyone know the causes of whining sound? Seems like powerline noise or AKA engine noise.  This is not a rare problem.  First remove the deck and remove the RCA cables from the back.  Then, get an extra pair of RCA's and connect them directly to the amp without running them along the side of your car. Should only take a minutes. See if the noise goes away.

Most common cases for this is bad GROUND. Either by the deck ground, amp ground or in the RCA ground connections in the head unit or amp. Very common in pioneer head units to have bad grounds to the RCA ouputs. Running RCAs next to power wires is not the case. Its called a GROUND loop for a reason. Also another common reason is gain level set way too high. Which is why i am an idiot suggested turning the gain all the way down to rule it out. Use a voltmeter and ensure you are getting good ground at the amp. If thats fine I would look at the ground from the deck. Seeing as you are complaining of this problem from the subs. I am betting you have a less then ideal ground to the amplifier or gain set too high. What is a proper ground? topic https://www.the12volt.com/installbay/forum_posts.asp~TID~49445~PN~1 How to set gains. topic https://www.the12volt.com/installbay/forum_posts.asp~TID~85479~PN~1

yeah the ground on the amp is good. my deck's grpund is wired up with the car's stock wire harness, good idea? its not grounded directly to the car's chassis because i cant find anything close to the deck to ground.

imupabove wrote: yeah the ground on the amp is good. my deck's grpund is wired up with the car's stock wire harness, good idea? its not grounded directly to the car's chassis because i cant find anything close to the deck to ground.

Your ground is reading 1/2 ohm or less on resistance? And is clean of any paint? Is it good or does it just look good? No the factory location is not always ideal. You may have to run a bit of wire to find a good spot. Again free of paint and 1/2 ohm resistance or less. Also have you turned the gain down to rule out having the gain set too high?