[Steve1155]

Anyone know if the amp rack from musicar for the JL X600 is the same for the 3 series and 1 series? Secondly is the technic harness for the logic 7 compatible with the mid level HIFI (with tweeters), or would I need a whole new harness?

[ctuna]

You can modify the existing rack but .
Its just as easy to fabricate a board with an L Bracket
if you want something nice. Some people just use Velcro
to keep it in place.

You need to read the audio build thread to clairify your understanding
of the various systems which is in these.

Take a look at the Hi Fi builds in the Audio Build thread.

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...1&d=1209780605
http://www.e90post.com/forums/showthread.php?t=641323
http://bmwcoders.com/forum/3-er-8/bm...1-e92-e93-291/
http://www.e90post.com/forums/attach...1&d=1209780865
http://www.google.com/url?sa=t&rct=j...,d.cGU&cad=rja
http://www.musicarnw.com/page-2/
http://www.e90post.com/forums/attach...4&d=1278871872

If you have a Hi Fi system most of your wiring is done.
The Technic Harness for that setup plugs at the point the
old amp connects and basically breaks out the signals and provides a relay to buffer the turn on signal.

If you get a MusicaNW system he gives you everything
you need including a amp mounting board. With his setup
the old mount comes out.

[bmw325i]

Originally Posted by ctuna

You can modify the existing rack but .
Its just as easy to fabricate a board with an L Bracket
if you want something nice. Some people just use Velcro
to keep it in place.

You need to read the audio build thread to clairify your understanding
of the various systems which is in these.

Take a look at the Hi Fi builds in the Audio Build thread.

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...1&d=1209780605
http://www.e90post.com/forums/showthread.php?t=641323
http://bmwcoders.com/forum/3-er-8/bm...1-e92-e93-291/
http://www.e90post.com/forums/attach...1&d=1209780865
http://www.google.com/url?sa=t&rct=j...,d.cGU&cad=rja
http://www.musicarnw.com/page-2/
http://www.e90post.com/forums/attach...4&d=1278871872

If you have a Hi Fi system most of your wiring is done.
The Technic Harness for that setup plugs at the point the
old amp connects and basically breaks out the signals and provides a relay to buffer the turn on signal.

If you get a MusicaNW system he gives you everything
you need including a amp mounting board. With his setup
the old mount comes out.

It seems like he is looking at a used musicar setup.

I cut out a piece of 3/4" particle board the shape of the amp opening drilled 2 holes and used the existing screw holes.

The logic 7 harness will not work with hifi they are completely different.

[ctuna]

It not clear he knows what system he has.
But a Hi Fi setup is not compatible with a Top Hi Fi L7 setup.
Mid Level suggests Hi Fi but again we have mixed terminology in
the original post.

[Steve1155]

I know what system I have. Mine is the mid level or HIFI system from an 08 135i. The stereo was the base level for that year. Mine is the mid level and there was one more higher level which has the EQ. All I'm asking is if the technic harness that would work for a car with the logic 7 system, is the same one that would work for my system. It may have a couple extra lines for a analog/ digital coverter or DSP. Now my HIFI has the flat signal to begin with, so, I won't need the A/D coverter or the DSP. But could I use that harness and just not use the lines for the ad converter or DSP or is there a completely different harness that if need for the HIFI system I have now.

[Technic]

Originally Posted by Steve1155

I know what system I have. Mine is the mid level or HIFI system from an 08 135i. The stereo was the base level for that year. Mine is the mid level and there was one more higher level which has the EQ. All I'm asking is if the technic harness that would work for a car with the logic 7 system, is the same one that would work for my system. It may have a couple extra lines for a analog/ digital coverter or DSP. Now my HIFI has the flat signal to begin with, so, I won't need the A/D coverter or the DSP. But could I use that harness and just not use the lines for the ad converter or DSP or is there a completely different harness that if need for the HIFI system I have now.

Unless you are outside the USA, your 08 135i either has HiFi or Top HiFi. Stereo system started to be installed in the USA 1-Series as standard equipment in MY2010 for about a full calendar year. No HiFi was offered at all during that time. That was it.

So let's cut the "mid level system" Jedi mind trick that will confuse forum members in here. And when forum members are confused my inbox gets full of non-searched questions.

And I do not like my inbox full.

Each particular OEM audio system uses a completely different harness just because each OEM amp -or lack thereof- uses a completely different connector.

[Steve1155]

Ok thanks guys that clears it up. Reading back I can see how some of my original thread could be misleading and I understand the confusion now. A used system is in fact what I'm looking at.