ok...i just hooked up my subs (2 rockford punch he2's) to my amp...
mtx 8302 wired up in stereo -the dvc's are in parrelel
hooked my ground (less than 18inches) up to my driver rear strut tower
rockford fosgate riot gamma rca cable
my power wire is 1/0 guage (into a 4 gauge splitter for the amp)
i have a optima red top battery
now...when my car is idling and the headlights are on, the amp seems to cut out
it doesnt seem like its shuting off (like its being pushed to hard) it just seems like the car doesnt provide enough juice to make it work-all of which are at full bore volume (gain is set at 3/4)
also, the amp will not even work when the car is off, but when u have it running-it works just fine.
i thought maybe the ground might not be good enough, so i might change that
where do most of you guys put your grounds?
Black 97' Z24
Blacked Out and Lovin' It...
"Z Yaaaa"
Check all connections, might be aa bad ground, might be a blown fuse. Might even be a problem with your amp. My car does fine when I have it going at idle with lights on etc, and I have neons on with it as well. And my amp will turn on and work when the car is off, and its in either the accessory or on position.
yeah, ok...i think im going to try the ground somewhere else.
i'll check the amp fuses tonight as well.
has anyone ever tried ditching the PUNY alternator wire? ive been thinking about turning it into a 4 guage-BUT it has a fuseable link in it, could i just put like a big fuse in the wire or something?
Black 97' Z24
Blacked Out and Lovin' It...
"Z Yaaaa"
ive done it with 1/0 gauge
Big 3 upgrade. And in all the installs i have done, Too many to count, Never did i have the gain above the half way mark.
Please read lanmans sticky ... specifically the part about setting your gains....No one wants to hear about you blowin ur VC's from clippin in a couple weeks...and why didnt "HOW TO: THE BIG 3" get a sticky?? That was some helpful stuff...
wysiwyg wrote:i would say they bang, they don't really pound so much. but if
you want to bump, then they will bump and hit real hard and a lot good. 
LOL
Yeah, read Lanman's sticky. Read wysiwig's post about the big 3. Is that amp 2 ohm stereo stable?
Make sure you scrape off the paint where you put your ground cable. Just double check your
connections, make sure no two wires are touching each other, etc. I don't think it's power delivery
from your car. Your system is not that big to drain that much power. Use a volt meter and check your
electrical current while playing your system. It should read 13.8v or 14.4 (+/-) while your engine is
running.
my amp is only 4 ohm stable... but it runs the subs just fine.
where do most of you put your grounds at?
also...can anyone explain why the amp wont even work when the car is turned off? too me that sounds like the amp is reading a below working range power range and wont work. if thats so then to me it seems like the battery doesnt havnt enough juice and the only way it'll work is if the car is running and alternator is pumpin power into the battery.
which is really weird because ive had a bigger amp in my 89 beretta and it worked just fine when the car was turned off.
Black 97' Z24
Blacked Out and Lovin' It...
"Z Yaaaa"
um, the amp shouldnt be on with the car being off. It should work in ACC, ON, And power saver mode. My amps are 4 ohm stable. What did you splice to run power to your HU? If the HU doesnt turn on or has a poor connection, there is a good chance the remote turn on wont work.
i spliced the remote wire in the harness on the cd player like your supposed to...but i didnt mean if the car was "off" i meant when the car isnt running.
the amp will turn on in acc or start modes if the cd player is on...
but will not put out power to run the subs.
Black 97' Z24
Blacked Out and Lovin' It...
"Z Yaaaa"
Fast97z24 wrote:i spliced the remote wire in the harness on the cd player like your supposed to...but i didnt mean if the car was "off" i meant when the car isnt running.
the amp will turn on in acc or start modes if the cd player is on...
but will not put out power to run the subs.
then you have 1 or 2 issues, other then a bad amp.
1) Bad ground
2) Short in the remote wire. Maybe be frayed or something like that.
ok i dont think im making myself clear...
when i have the volume up a loud as it will go sounding good....
and the car isnt running the amp wont power the subs, if its down low and not pounding bigtime-everything works just fine.
ALSO...car running-stereo up loud...listening to it, turn the headlights on-amp drops out and cuts off, headlights off-works fine, or if you roll the windows up or down-amp cuts out. (all runs are at idle)
and yeah i do realize its asking alot to have the car pump out that kind of voltage at idle, but its really annoying when ur sitting at a stop light and the amp starts cutting out. (by cutting out i mean its like the amp just shuts off for .5 seconds then comes back...and does it til u turn the volume down)
evidence something aint right- i also have 2 mtx 6500d amps, i tried both of them insted of the 8302 and both did the same thing (and both are brand spanking new)
tonight im going to do 2 of the 3 big wire upgrades-id do #3 but there is no way in hell you can take off the starter wire w/o taking the intake manifold or starter off-i'll do that this winter.
Black 97' Z24
Blacked Out and Lovin' It...
"Z Yaaaa"
as for a great solid ground installed systems in like 5 j's now i believe and i always go for the rear seat belt bolt under the rear seat best place to ground to scrape the paint off then bolt it down as tight as you can! that may solve your problem too!
Who needs a sig?
www.sinisterimages.com
mine is grounded under the back seat as streetside said, and everything works fine. If I turn mine up really loud, my amp shuts off ( not in protection mode either ), but thats because my amp draws alot of voltage, I need a better alternator, you probably just need a better ground.
i'm gonna guess that having your gains turned 3/4 of the way up and possible impedance being well below stable is causing the issue, with a sprinkle of bad ground on top.
Quote:
rear seat belt bolt under the rear seat best place to ground
Same here, and I've had a fair share of amps ranging from a 200w WalMart special to a 1200w monoblock.
No dimmage.
I need a better HU... it doesn't like the amp I have now.
