Major speaker distortion issues

[skoty]

Heres the story...

I have a panasonic CQ-C1301W MP3 50 X 4 headunit and am running just a pair of JVC 6.5in 180w rears in the parcel tray. I know its nothing flash but the sound quality should be reasonable? Well ever since the speakers have distorted extremely badly even with not too much volume/bass running through. I tryed a pair of pioneer 6 x 9s assuming it would be a fault with the original speakers but the quality aint a whole lot better.

The best way to describe the sound quality would be tinny, what do you guys reckon? do i need to run a seperate amp or what? its starting to piss me off now

[Jazza]

What options does it have when you press in the volume nob? Bass, treble, fader, balance. Any others? Im not sure which model this is. But if its the same as mine. Change the eq to a preset factory one (Fiddle later) and then change the high and low range so they meet in the middle of the screen (just put them 1 notch from max) Set the bass and treble at +2dB or something just over halfway but set them even.

Sounds like its a head unit problem rather than speaker issue. Were both sets of speakers brand new? And distortion and tinny sound different IMO. Do the speakers pop and crackle, or is the quality just quiet and crap?

[Deno]

You may want to check thatthey are wired in phase. ie pos on head unit goes to pos on speaker and neg to neg. if they are wired differently you will get very little bass and they will sound distorted as you describe.

Just swap the wires on one speaker and see if it makes an improvment.

[skoty]

What options does it have when you press in the volume nob? Bass, treble, fader, balance. Any others? Im not sure which model this is. But if its the same as mine. Change the eq to a preset factory one (Fiddle later) and then change the high and low range so they meet in the middle of the screen (just put them 1 notch from max) Set the bass and treble at +2dB or something just over halfway but set them even.

Sounds like its a head unit problem rather than speaker issue. Were both sets of speakers brand new? And distortion and tinny sound different IMO. Do the speakers pop and crackle, or is the quality just quiet and crap?

Yep it has all those functions however I have already played around with them. Head unit and speakers are brand new almost (only running rears), purchased at the same time anyway. quality is just quiet and crap with no richness in the sound if you know what I mean.

[skoty]

You may want to check thatthey are wired in phase. ie pos on head unit goes to pos on speaker and neg to neg. if they are wired differently you will get very little bass and they will sound distorted as you describe.

Just swap the wires on one speaker and see if it makes an improvment.

They are wired correctly

[skoty]

Fixed the problem however it doesnt make a lot of sense ...

Wired up my 6.5in JBLs to the front L/R channels instead of the rears and now they sound fine Must i have a problem with the rear channels in my headunit?