[Mbubs]

Hello Everybody,

Bit of a noob here but I have been following the forum closely and as a result managed to upgrade my audio system following the recommendations of all those who upgraded here.

I have base audio in a e90 and carried out the following:
New component speakers for the front, earthquake sws8xi, coaxial in rear all powered by jl xd600/6 and used a technic harness. Also, the car was successfully recorded to hi-fi for full range and flat signal.

Now my issue, on the left side (amp side), it sounds like the speaker is high passed but the right side is full range. I get hi, low and mids and sounds real good. I have no idea what could have caused this, I've flipped the speaker input and outputs making left right fronts back and it just leaves me stumped! I even wired new components in too.

If anyone could help me here, I'd be very grateful.

[ctuna]

If you are coming from a base system did you split the connection between
the Floors and the front Doors properly?
If you bought a base harness Technic makes a note that cars before a certain
date will not work with his base harness.
Will not work because the parallel connection between the doors and floors
is made at the door sill and not at the underseat speaker connector.
There is also a capacitor inline with the door speakers to act as a cheap high
pass in the parallel configuration I would remove it.
If you got a proper set of front component speakers it should come with
a passive crossover's to go between the main door tweeter and the speakers.

To further isolate the problem you could try reversing the left and right effected
channels at the amp and see if the problem moves or stays in place.

Base System Upgrades
http://www.e90post.com/forums/showthread.php?t=1378833
http://www.e90post.com/forums/showthread.php?t=1378833
http://www.e90post.com/forums/showth...ghlight=Dotech
http://www.e90post.com/forums/showthread.php?t=445266
http://www.e90post.com/forums/showthread.php?t=581379
http://www.e90post.com/forums/showthread.php?t=495855
http://www.bimmerfest.com/forums/sho...d.php?t=550771
http://www.e90post.com/forums/showth...ht=amp+upgrade
http://f30.bimmerpost.com/forums/sho....php?t=1003810
http://www.e90post.com/forums/showthread.php?t=451941
http://www.e90post.com/forums/showthread.php?t=540954
http://www.diymobileaudio.com/forum/...morel-jbl.html
http://www.e90post.com/forums/showth...1#post16679904
base system wiring pre/post 3/09
https://www.google.com/url?sa=t&rct=...tDpLJPcGkw_ui_
http://www.e90post.com/forums/attach...1&d=1411521234
http://www.e90post.com/forums/attach...1&d=1411521234
http://www.1addicts.com/forums/showthread.php?t=634957
http://www.e90post.com/forums/showthread.php?t=494299
http://www.e90post.com/forums/showthread.php?t=822366
http://www.e90post.com/forums/showth...ghlight=Dotech
http://www.e90post.com/forums/attach...1&d=1411521234
http://www.bimmerfest.com/forums/sho...d.php?t=550771
http://www.e90post.com/forums/showthread.php?t=445266
http://www.e90post.com/forums/showthread.php?t=581379

[Mbubs]

Hello Ctuna.

I've read up on your posts too and you are very knowledgeable with this.

Your reply makes sense. Technic did send me the jumper too. I think it was the capacitor as that makes the most logical sense to me. I am not the most clued up when it comes to audio especially with car audio but with all yours, technics, VP, Beemer, etc I managed do it.

The car has alpine components which I dremeled for it too fit but I learnt my lesson regarding hardware.... follow the pros!

Thank you for your reply, really appreciate it.

I had a think about going back to correct it but I'll have to get rid of the car now as I seen a good deal on an f30.

Thank you again for your reply ctuna