car audio disortion at higher volume levels.?

Question

i just installed a new head unit and when i turn up the volume to 75% and higher, the mids and highs all crackle and pop. the sub is fine. the mids and highs all run off the head unit. is this a grounding issue? i used 18 gauge wire to ground the head unit, does it need to be heavier gauge? Or is this a problem with my head unit(4 years old)?

Answer 1

turn the bloody thing down

Answer 2

A larger ground wire wouldn't hurt, but may not help much. You should also make sure your speakers are wired for at least a 4-ohm impedance load; too low an impedance can cause distortion like you're describing. However, you may just be reaching the limits of the head unit's output. Most head units will start to distort as they get close to their maximum volume setting. Turning off bass boost and loudness settings and adjusting the bass control lower should help. If all else fails, it may be time to step up to a separate amplifier for your mids and highs.

Answer 3

I'ed suggest to take off the loud if it's on but the bass will be cut but you want to hear clarity

if the mids where run on of a amp with a hi FreqQ then you wouldnt have this problem but if they're low on wattage this really aint worth it

so you should invest in a amp with high frequnency

you could get a wiring kit and (4ch) amp an some up rated speakers for about £60

or get a (2ch) amp power distribution block to connect to the power cable for sub's amp and 6"x9" then you wouldnt need to take up the carpet to wire the speaker's for about £60

or could keep th originals play them through and on a high pass this would increase the sound of the mids an tweets
and put 6"x9" in the shelf run off a (4ch) amp
then put the balance to the rear and still utilize the orignals but get more mids and tweets but you would need to take up the carpet to run the wires

Answer 4

Sounds to me like you have got no crossover running on the 2-way speakers up front.......your head unit will produce all the signlas from what ever music you are playing which is good if you listen yo your music at a low volume...the 2-way speakers are not designed to handle low down bass......crossover will cure this problem so all you have is mid and hi data going to the 2-way speakers.......any good car audio shop will sell these......brand names are not all that important so go for the cheap ones as all they do is block certain frequncies not create.

Also Make sure you have got decent 2-way speakers as if they have a low rating that would cause them to distort.....alot of head units today will produce 55w x 4 RMS where as standard car speakers from the factory are rated about 25 - 30w RMS

Hope that some use to you

Answer 5

Try some bass blockers, worked great for me when I had the same problem. They are really cheap too so even if they don't work, o well there goes $25. Check the link homes.

http://www.crutchfield.com/S-tGDtStCzVp4/cgi-bin/ProdGroup.asp?g=761

Answer 6

How good are your speakers? If the speakers aren't high wattage then they will flutter & vibrate this could be your problem