amp turns off

[detok]

i have a ppi a800 and im pushing a 12" cvr 600 watts i think but i bump the music the bass is going fine and then the amp shuts off i was thinking of grouding it to the battery would that help?

[rickyduckworth]

does the amp turn off (as in NO POWER) or do the subs just cut out?

could just be that your alternator can't make as much power as you are using.....you'll get headlight dimming and subs cutting out as first signs

[Ghetto_CB7]

Short ground wire is good

I would not suggest grounding it to the battery basically you want your ground wire as short as possible. I would make sure the amp is grounded a good place. Mine is grounded on the seatbelt bolt underneath the rear seat. Usually when this happens it is because the amplifier for some reason goes into safety mode. This can be caused by overheating, or the most likely scenario is that the voltage to your amp is dropping below the required amount and it turns off. I have seen this happen in many other vehicles but i have never had this problem with a cb7 (I have installed stereos in three different ones)

A few questions...
(1) How old is your battery and what kind is it?
(2) How many ohms are you running your amp at?
(3) What size of wires are you using for ground and power (to the amp)?
(4) Have you ever replaced your alternator?

From my best guess without testing it i would say your alternator is going. Luckily they are fairly cheap and you can probably replace it yourself. Before buying one i would preform a check to see if it is going. You can do this with a voltmeter. I will look for an explanation thread on this site and post a link if i find one.

[Ghetto_CB7]

Alternatior test (sorry for the double post)

Apparently Auto Zone and other parts stores do this test for free now. So if you don't feel like doing it just run over there and ask them. As a side note their have been stories of Auto Zone and other places telling you your alternator/battery is bad then selling you one when yours was OK. I do not know because i have never had them do the test but you may want to get it done at two places just to be safe. That is if it is free...

[detok]

well this is on my 07 scion tc its my competition car

[Ghetto_CB7]

Wow

Well i would still suggest the same rout. Check to see if the alternator is good. GL man if you need anything else just ask

[jdog90]

this same thing also happened to me. What i did was re wire my sub diff, got the idea from kicker .com check out the tech page, that will help a bunch

[Ghetto_CB7]

Wire the sub different...

Do you mean run it a higher ohms or what? I think thats what you are saying.
E.G. like changing it from bridged to using two channels?

[jdog90]

yes thats what i mean, i have a 1 punch 12 inch sub being pushed by a kicker amp , i droped the oms and sounds better, the only thing - about it is that i cant use the bass nob anymore, dont know y

[Ghetto_CB7]

Ohms

I think you mean upped the ohms, but yes that sounds correct otherwise.

Base boost is a nice feature. This being said people abuse it more then any other part of a system.

The correct way to use base boost is to tune the entire system with it on at no more then 5db (I tune mine at about 3db) then when it is all tuned you turn the base boost down to zero. You can then fine tune each song by adjusting the volume on the deck until you reach the maximum output for your limiting factor (for most people this is your ordinary speakers) when you hear distortion anywhere in the system stop!!!! Then fine tune the bass with the base boost again not going any further then 5db.

The entire point in tuning is to take all the parts of your system and turn them DOWN to the level of your limiting piece of equipment. (so if your subs are the best part of your system then you should not need to use any bass boost)

[cleanjdm]

most of the time its cuz the amp is running too hot due to not having the matched up speakers, or the wiring for the amp isnt the proper gauge.

[AllWhiteCoupe]

My amp does that. Ita all alpine audio, and i ABUSE IT! thats why mine turns off, Its not the wireing, not the settings, not the wrong ohms. I got it and set it up for one reason, to sound as good and as loud as possble. My cd player will turn off to. If you know you got it put in right, and you know that you got it set up right, you know what it may be? As hard as it may sound, sometimes it a easy a turning the volume know from 1000 db down to just 100 db. that makes less heat, and less overheating...

[manny_turbo]

try uppin the wire gauge or a higher alternator

[accord junkie]

u should prob never ground ur amp 2 battery get optima yellow top battery.get a 1 farad capacitor prob a minimum of 4 guage wire keep the ground short and make its grounded properly good metal 2 metal contact sand spot 2 bare metal where ur ground goes and prime it after 2 prevent rust.

[chriscopenhaver]

Whats the resistance you have in your set-up. Ex. 1-ohm 2-ohm 4-ohm.