Help!! speakers keep blowing

[KRIS05VVTi]

just not able to make an exact opinion without actually being there and physically looking at your set up.

werd up....i'd luv to help out a fellow cb7tuner but i have to be there

[Loafer987]

Im sorry but if I saw a car come into my shop like that I would refuse to work on it. Get a professional to fix your install before it causes damage. Taking power from the fuse box like that will starve the rest of your electrical system. Run the power wire straight to the battery. You also need to ground the amp to bare metal not just any bolt that is easy to get at. sand down a spot of bare metal and use 3 sheet metal screws to screw the connector to the bare metal. Then use primer paint in a spray can to spray the bare metal so it wont rust. i will try to take pictures of my install so you know what I mean.

Also Run your gain on the amp as low as possible. The higher the gain the more distortion you will reproduce and the more subs you will blow.

Most importantly you have to remember that a speaker is an electric motor. its needs to be broken in before pushed hard or guaranteed you WILL blow it up. Run the sub at a low volume for approximately 30-40 hours. then try a higher volume.

These are the three most common mistakes I see with self install jobs on a daily basis so please dont take offence to anything I am saying i just want to help you do this properly.

Dont let these problems deter from you from running a stereo just do it right the first time and you wont have issues to deal with in the future.
I have been doing installs and selling car audio for 3 years and I have never once blown up a sub in my own car and I have run a ton of sub combinations. I am running an 1100 watt rms sub amp right now in my car on 2 300 watt rms subwoofers and i push them hard every day and never had an issue. you just have to do it right and listen for distortion. if it doesnt sound right or clean anymore its too loud or being pushed too hard.
Good luck!

[sonikaccord]

Really?
How can your starve the rest of your electrical system when all of it is coming from the same source? The worse problem you should have is blowing fuses left and right.

Gain doesn't destroy subs, clipping does.

We actually just finished a thread not to long ago about how subs do NOT need break in time. Do you know what happens to a speaker when it is "breaking in"

I'm not trying to question your intelligence but I've seen many statements like this.

[lokuputha]

Gain doesn't destroy subs, clipping does.

True story.

[cloudasc]

Whats frequency is your crossover set to, and do you have a inline fuse between your battery and your amp?

[bizzyboi]

ok you amp has a 300 watt rating, that usually means 300 watts is the peak output power. only in short burst. look for the rsm/rms (i forget which one) power rating. that how many watts you amp can continously put out. im going to assume your amp has a rms of 150 watts. this should not be enough power to blow subs, or even power 2 400 watt subs with any authority. have you just tried to run 1 sub off that amp. how many ohms are u running from the amp? how many ohms are your subs rated for. also try grounding you amp to the body with a short fat gauge wire(should help with the engine noise. like loafer said sand the paint down to bare metal. it should be shiny like aluminum, not gray thats paint. a simple ring terminal should do the trick. oh yeah how are you subs wired, parallel or series. ive added a link about series and parallel wiring http://www.marktaw.com/recording/Ele...dSpeakers.html i would hook those subs up to somebody elses system just to make sure they are blown, do you see any damage to the surrounds, does the cone stil travel freely, one last thing check you polarity on those speakers

[nachocb7]

The noise is either from running the rca cables next to the power wires to the amp( run them down separate sides of the car), or most likely a bad grounding wire location. It should be grounded as closely as posible to the amp. And make sure it is a solid frame section. Your speakers blowing is another story. Are they run in paralell or in series?If you have them running paralell you could be cutting the resistance in half and doubling the output power.Most amps come with instructions on how to wire different setups.

[r1emperor]

How long do the speakers last before blowing? If they play for awhile and then blow then it"s probably clipping. If they blow immediately (same day), then it"s a wiring issue.

[2.2litrebeater]

Really?
How can your starve the rest of your electrical system when all of it is coming from the same source? The worse problem you should have is blowing fuses left and right.

theres a wire between the fuse box and battery, by connecting at the fuse box you are now asking that stock wire to carry its intended load plus that of the amp. always connect power straight to the battery.

Whats frequency is your crossover set to

x2, set it low. and your ground in the pic a bad one.

[cloudasc]

Pushings highs through a sub, that will blow them out too.

[sonikaccord]

theres a wire between the fuse box and battery, by connecting at the fuse box you are now asking that stock wire to carry its intended load plus that of the amp. always connect power straight to the battery.


x2, set it low. and your ground in the pic a bad one.

Electricity takes the path of least resistance so adding upgraded wire to stock wire shouldn't affect anything.

[IridiumCore]

Finally They Haven't Blown

I ended up turning everything down on my amp. And gradually increasing the levels. So far I have kept my subs for over a week. And they're cheap $20 walmart subs that sound alright for now until I get fosgate.