[Hybrid For Life]

So i was in the process of wiring up the line level converter into the stock amp wiring harness in the trunk when I realized I was reading the wrong directions (reading logic 7). So i had to scrap all that and wire it up again which wasn't a big deal at least I had the right wires colors that needed to be spliced into now. Well so I thought. after wiring up the line level converter to the right wires on the factory amp according to the BSW instructions that I got from the BSM website I powered up the amp and plugged the RCA cables into the Input ports on the mono amp(red for the right channel, black for the left). And then turned on the car and tried to play some music to test it all out and nothing... speakers all worked but the sub didnt. so thats were I am and im stuck...

-I know the wiring from the amp to the sub is correct
-I know the amp is getting power (lights on)
-I know the amp is being turned on/off from the control wire from the head unit
-Im 99% sure I wired up the line level converter correctly(checked it 3 times)

What am I doing wrong?? A friend said I might need to splice into the wires pre amp. Is that true? are the colors of wire different(how would I differentiate between left and right and positive and negative, pre amp or amp output wires?

To say the least im lost. I thought this would be a piece of cake but maybe im missing something.
Also I played around with the RCA cables, and found that If I plug the left channel in the output port on the amp and the other rca in the right input it powers the sub but sounds like crap and has no power. This also works if I plug left in the input and right in the output.

Am I missing something really obvious?
Here's the Line level converter I picked up.
Axxess AX-ALOC10

[ctuna]

BMW stereo types
http://www.e90post.com/forums/showthread.php?t=352586
http://www.e90post.com/forums/attach...2&d=1266451970
http://www.e90post.com/forums/attach...2&d=1260829447
http://www.e90post.com/forums/showthread.php?t=343673
http://www.e90post.com/forums/showthread.php?t=138949
http://www.e90post.com/forums/attach...2&d=1260829447
http://www.e90post.com/forums/attach...1&d=1209780605
http://www.e90post.com/forums/attach...1&d=1209780865
http://www.musicarnw.com/page-2/

Wiring diagrams in the sticky at the top of the page
in the forum display

http://www.e90post.com/forums/showth...ghlight=woofer

[Hybrid For Life]

Thanks for all the links very helpful. I plan on working on this when I'm home from work tonight. But what I'm still unclear about is wether I should splice pre amp or after the amp(wires going to subs)?

[ctuna]

If you don't have logic 7 and have and amp you must have Hi Fi.
You could use the preamp signal in that case however you should be
aware that the preamp to the Hi Fi uses a balanced differential signal.
That means there are two signals that are 180 degrees out of phase which
means you need and adapter that translates that output to single sided and
does not necessarily attenuate it. If you are using a BSW setup there instructions should be sufficient and you should get in touch with them if you
are having problems.
If this is a BSW setup it looks like it would have come complete without the need to add a level converter.

[Hybrid For Life]

Should I should just splice in the line level converter on the outputs for the sub channels and call it good?

[wh33lsup]

Hey Hybrid, which 3series do you have? and what year? if you dont mind me asking. I'm trying to add a sub and an amp in my 06 330i and i don't think i have logic 7. Would it be possible for you to take pics of your work and post them?

[Hybrid For Life]

Originally Posted by Toseef

Hey Hybrid, which 3series do you have? and what year? if you dont mind me asking. I'm trying to add a sub and an amp in my 06 330i and i don't think i have logic 7. Would it be possible for you to take pics of your work and post them?

I have an 06 325i so we have Rey similar cars. To the best of my knowledge logic 7 wasn't available in our year. I believe it was available starting MY07???

And yes I can take pics of the process but I might not get to it until this weekend as I'm swamped with work.

[ctuna]

In the 325 I believe it was and option. Tell tale signs of Logic 7 are center speaker in dash 13 rather than 10 speakers tweeters contribute to the count.
The amp in back is silver in the logic 7 system black in the Hi Fi.

[Cmaddox335]

Originally Posted by Hybrid For Life

Should I should just splice in the line level converter on the outputs for the sub channels and call it good?

I spliced my LOC to one of the sub channels. If your LOC has a ground wire, make sure to ground it. Also, you said you already have it hooked up and it isn't working? Make sure the adjustment on the LOC isn't all the way down.

[Hybrid For Life]

Originally Posted by Firebirddrvr

I spliced my LOC to one of the sub channels. If your LOC has a ground wire, make sure to ground it. Also, you said you already have it hooked up and it isn't working? Make sure the adjustment on the LOC isn't all the way down.

no adjustments on my LOC which is linked im my OP. I plan on spliccing to both sub channels and yeah I guess I might as well ground it will im at it.

[Hybrid For Life]

Originally Posted by ctuna

In the 325 I believe it was and option. Tell tale signs of Logic 7 are center speaker in dash 13 rather than 10 speakers tweeters contribute to the count.
The amp in back is silver in the logic 7 system black in the Hi Fi.

yeah mines black and i have no dash speaker, im 100% sure I have HiFi. still pretty sure logic 7 wasnt an option for MY06, can someone confirm?

[Hybrid For Life]

Originally Posted by Hybrid For Life

yeah mines black and i have no dash speaker, im 100% sure I have HiFi. still pretty sure logic 7 wasnt an option.

so I just did some reading and...
If you remove the pop-out gray tray in the left rear corner of the trunk, is the amp:
– missing? (base Stereo)
– black in color (HiFi, pre-2011)
– silver in color (Logic 7)
– light gold in color and very small (HiFi, 2011)

[taibanl]

If you have Hifi, why don't you tap the balanced signal and ditch the LOC

[Hybrid For Life]

Originally Posted by taibanl

If you have Hifi, why don't you tap the balanced signal and ditch the LOC

I wasnt aware this was an option...
Care to elaborate?

[taibanl]

Originally Posted by Hybrid For Life

I wasnt aware this was an option...
Care to elaborate?

No...but I'll refer you here.

[wh33lsup]

Originally Posted by Hybrid For Life

I have an 06 325i so we have Rey similar cars. To the best of my knowledge logic 7 wasn't available in our year. I believe it was available starting MY07???

And yes I can take pics of the process but I might not get to it until this weekend as I'm swamped with work.

Thanks, i would really appreciate it!

[RupertPupkin]

Originally Posted by Hybrid For Life

yeah mines black and i have no dash speaker, im 100% sure I have HiFi. still pretty sure logic 7 wasnt an option for MY06, can someone confirm?

I am My 06 330i and have Logic 7.

[Hybrid For Life]

Originally Posted by jimmydever

I am My 06 330i and have Logic 7.

I stand corrected. Maye it wasn't an option for 325?

Sub came in today. Thanks again.

[hogbmw]

On my setup with Hi-Fi(07 328), which should be identical to yours, I tapped the rear speakers pre-amp and used the LOC. I got weird reverb when I tapped the "balanced" signal after the amp(the sub l and r underseat), I've heard it has something to do with a noise cancelling system or something of the like. Just my experience, I'm not sure if that's why it is.

[taibanl]

^If you had issues with the balanced signal; you had an incompatible amp

[Hybrid For Life]

work and the weather really has it in for me. Hopefully I can get it wired up tomorrow if it doesnt rain to much.

[bmw325i]

Originally Posted by Hybrid For Life

I stand corrected. Maye it wasn't an option for 325?

Sub came in today. Thanks again.

Sorry to have to correct you once again but I have logic 7 and I have an 06 325i.