argh my stereo

[mike137]

hi all!

i have a pioneer mp2770 head unit which i connected a maystar qxt amp to, i have one audiobahn sub and a pair of 6x9s on the amp.

i also have alpine front door speakers and audiobahn rears either side of the parcel shelf-connected to standard wiring.

after connecting these it sounded great...for 4 days then it stopped working properly.

the sub and 6x9s on the amp work fine but all the stuff on the standard wiring wont. whenever i switch the stereo on there is a single pop from the pasenger side front door speaker, but nothing else.

what have i done wrong?

thanks in advance!

[OCDave]

amps blown in the headunit?

[Chikin]

is it earthed properly?

certain men on this forum have difficulty with that lol ........namely wol pmsl

[DaveyQ]

sounds like the headunit. I know sometimes the headunit aint capable of running all equipment. You may need a power cap. Bearing in mind you are running it all off the headunit.

However it shouldnt do this. Check fuses and maybe try a more powerful headunit.

[mr spoon]

Noooooooooooo! A powercap is absolutely not the answer, ever. It does seem like your head unit's internal amp has blown, or more likely gone into protection. This happens when an incorrect load is placed on the amp - usually from a speaker with a duff coil or if one has shorted out on the door skin - also if the cone has been forced away from the coil... personally, I'd look at consolidating a bit, and running your front speakers from the amp instead of the 6x9s - subs sharing air space with speakers is never good!

[Pllusy]

pull the door speakers out and make sure the wires arent touching the bodywork anywhere. sounds like the speaker wire is earthing somewhere in the door and its tripping the circuit breaker in the h/u.

check this first then press the reset button an see how it goes.

[wol-gsi]

is it earthed properly?

certain men on this forum have difficulty with that lol ........namely wol pmsl

yeah yeah thx 4 that duck lol :)

[Chikin]

yeah yeah thx 4 that duck lol :)

hehe your very welcome ;)

[mike137]

sorry lads and lasses, i sorted this out a couple of weeks ago.

one speaker was earthed to the door and the other was full of water.

thanks for your help tho. :)

[mike137]

Noooooooooooo! A powercap is absolutely not the answer, ever. It does seem like your head unit's internal amp has blown, or more likely gone into protection. This happens when an incorrect load is placed on the amp - usually from a speaker with a duff coil or if one has shorted out on the door skin - also if the cone has been forced away from the coil... personally, I'd look at consolidating a bit, and running your front speakers from the amp instead of the 6x9s - subs sharing air space with speakers is never good!

when you say a power cap isnt the answer do you mean dont run one at all or that it wont fix the probs i was having?

[mr spoon]

I mean don't run one at all. There only use is in very powerful installs to stop the headunit switching off on heavy bass notes in SPL competitions.

For 99.9% of installs a powercap is completely useless. You would instead be looking at upgraded wiring, batteries and alternator for serious power.

[mike137]

i see, thanks for your advice matey, will bear it in mind.

[rhydgte]

i see, thanks for your advice matey, will bear it in mind.

If there's one thing Owen (Mr Spoon) knows it's 'ICE' :cool: