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      11-17-2014, 03:02 PM   #1
Tim603
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New head unit on my E90

Hey guys,

So I just traded in my E92 328 (676 option) which I put in a double din pioneer head unit.

My question is in my 07' E90 335i (677 option) will I be able to utilize the same dash kit and wiring harness?

Thanks!
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      11-17-2014, 11:02 PM   #2
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Because the top Logic 7 System has a Fiberoptic Connection

Because the top Logic 7 System has a Fiber optic Connection
between the amp and Head Unit. (Logic7 = option 677)
The only Head Unit known to be compatible the L7 Amp is the
Dynavin N6. Yes your old stuff might fit in the dash but you are going to have to replace the amp to if you want more than 4 channels of Head Unit power.

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
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      11-18-2014, 09:37 AM   #3
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Quote:
Originally Posted by ctuna View Post
Because the top Logic 7 System has a Fiber optic Connection
between the amp and Head Unit. (Logic7 = option 677)
The only Head Unit known to be compatible the L7 Amp is the
Dynavin N6. Yes your old stuff might fit in the dash but you are going to have to replace the amp to if you want more than 4 channels of Head Unit power.

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
So there is no device that converts that Fiberoptic to copper so I can make the amp work with my new head unit?

If thats the case I would either have to do what you said and just use 4 of the 7 speakers or I would have to run a new amp, bypass the OE amp all together and tap into the speaker wire coming out of the factory amp.

Do you know of anyone who has done this? Ive been searching around but I see so much stuff on hifi and not logic 7 upgrade when it comes to new HU in conjunction with utilizing factory speakers.
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      11-18-2014, 09:47 AM   #4
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Sounds like you are asking about amp replacement not HU replacement. Please clarify
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      11-18-2014, 09:49 AM   #5
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Quote:
Originally Posted by Tim603 View Post
So there is no device that converts that Fiberoptic to copper so I can make the amp work with my new head unit?

If thats the case I would either have to do what you said and just use 4 of the 7 speakers or I would have to run a 5.1 or 7.1 channel amp, bypass the OE amp all together and tap into the speaker wire coming out of the factory amp.

Do you know of anyone who has done this? Ive been searching around but I see so much stuff on hifi and not logic 7 upgrade when it comes to new HU in conjunction with utilizing factory speakers.
I started with logic 7 and I've replaced everything including the headunit. I didn't use the dynavin though I have an Alpine s920hd. Buy Technic's logic 7 harness and cut off the end that would plug into the logic 7 amp. For the head unit use the connects2 harness if you don't get the dynavin. The speakers don't need to be changed but if you do you can get the connectors from the dealer. It can all be done without cutting any factory wires if you plan it out.
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      11-18-2014, 10:58 AM   #6
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Basicly you loose the amp.

Basicly you loose the amp.
So far dynavin is the only company that has made a device that
converts the BMW optical signal to something the L7 amp can use.
And I think it only works with there N6 Head Unit not sure you might
check. ( or they may only sell it with the N6) and that option just came out.
There is another company that makes a preamp that will decode the BMW
optical signal but that is not what you want.

The route to redoing a L7 system to aftermarket are well documented
here.

http://www.e90post.com/forums/showthread.php?t=641323

Op was asking about the Head Unit fitment ,but I don't think he was aware of the fiberoptic interface between the amp and Hu.

For amp replacement
The older solution is an MS-8 and some amps and speakers there is also
the Helix 82dsp both are 8 channel amp/processors . I would
go with the Helix as it gives you 50 watts per channel as opposed to 22 watts for the ms-8 and it's more tweekable.

Last edited by ctuna; 11-18-2014 at 01:00 PM.
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      11-18-2014, 11:07 AM   #7
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Quote:
Originally Posted by bmw325i View Post
I started with logic 7 and I've replaced everything including the headunit. I didn't use the dynavin though I have an Alpine s920hd. Buy Technic's logic 7 harness and cut off the end that would plug into the logic 7 amp. For the head unit use the connects2 harness if you don't get the dynavin. The speakers don't need to be changed but if you do you can get the connectors from the dealer. It can all be done without cutting any factory wires if you plan it out.
Okay that sounds good, can I buy those harnesses online or do I have to PM Technic?

So how do you like your system? Did you use the alipine to power the speakers or are you running a 4/6 channel amp?

Quote:
Originally Posted by ctuna View Post
Basicly you loose the amp.
So far dynavin is the only company that has made a device that
convert the BMW optical signal to something the L7 amp can use.
And I thing it only works with there N6 Head Unit not sure you might
check. ( or they may only sell it with the N6) and that option just came out.
There is another company that makes a preamp that will decode the BMW
optical signal but that is not what you want.

The route to redoing a L7 system to aftermarket are well documented
here.

http://www.e90post.com/forums/showthread.php?t=641323

Op was asking about the Head Unit but I don't think he was aware of the fiberoptic interface between the amp and Hu.
Yeah I dont want Dynavin since I have a great headunit already, I will just bypass the amp and use the Technic harness. That seems like the best way to do it.

Where do I buy these harnesses?
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      11-18-2014, 11:12 AM   #8
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FYI

This looks like a good replacment if you don't want huge power

http://www.e90post.com/forums/showth...ighlight=helix

or you could add some amps for woofers and sub woofers on top.

You have to PM Technic here.
be sure to map out what you are going to do and read the threads on
L7 systems.
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      11-18-2014, 11:16 AM   #9
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Quote:
Originally Posted by ctuna View Post
This looks like a good replacment if you don't want huge power

http://www.e90post.com/forums/showth...ighlight=helix

or you could add some amps for woofers and sub woofers on top.

You have to PM Technic here.
be sure to map out what you are going to do and read the threads on
L7 systems.
That looks pretty good but that guy is saying he is wiring the tweeters and midranges seperately?

Is there no factory crossover?
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      11-18-2014, 11:39 AM   #10
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Quote:
Originally Posted by Tim603 View Post
Okay that sounds good, can I buy those harnesses online or do I have to PM Technic?

So how do you like your system? Did you use the alipine to power the speakers or are you running a 4/6 channel amp?



Yeah I dont want Dynavin since I have a great headunit already, I will just bypass the amp and use the Technic harness. That seems like the best way to do it.

Where do I buy these harnesses?
You could use whatever combination you want after the headunit. Even if you just got a 4 channel amp and had 75-100 watts per channel of clean power for the stock front speakers and underseats it would be an improvement over the stock system. If you want you can go all out with whatever amps and processors you want.

For now I have an xd600/6, morel hybrid ovation II's, and jehnert xe200. I also have 2 alpine type r's powered by an audioque 2200d My headunit has time alignment, crossover, and eq adjustments which are useful. I'm happy with it for now. I'm going to keep the headunit, door speakers, and underseats and replace everything else with different equipment.
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      11-18-2014, 11:43 AM   #11
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The factory crossovers are pretty sucky.

The factory crossovers are pretty sucky.
basicly a cap I think.
If you get and aftermarket door set it will come with
good crossovers. Most people put them in the Door
and only one run channel per door.
You don't have to run active some people do that for more
control.

Here are some example systems most did not start out as
L7 though.(But there are some and it gives you good idea of the
speaker possibilitys and the installation procedures for speakers)

Best System examples
http://www.e90post.com/forums/showth...hlight=level+3
http://www.e90post.com/forums/showthread.php?t=445266
http://www.e90post.com/forums/showthread.php?t=822366
http://www.e90post.com/forums/showthread.php?t=826683
http://www.1addicts.com/forums/showthread.php?t=634957
http://www.e90post.com/forums/showth...1#post16679904
http://www.e90post.com/forums/showth...ight=processor
http://www.e90post.com/forums/showthread.php?t=727760
http://www.e90post.com/forums/showth...ighlight=level
http://www.e90post.com/forums/showthread.php?t=590420
http://www.e90post.com/forums/showthread.php?t=581379
http://www.e90post.com/forums/showthread.php?t=451941
http://www.e90post.com/forums/showthread.php?t=540954
http://www.e90post.com/forums/showthread.php?t=324214
http://www.e90post.com/forums/showthread.php?t=495855
http://www.e90post.com/forums/showth...hlight=technic
http://www.e90post.com/forums/showth...ghlight=Dotech
http://www.e90post.com/forums/showth...&highlight=BSW
http://www.diymobileaudio.com/forum/...morel-jbl.html
http://www.e90post.com/forums/showthread.php?t=494299
http://www.bimmerfest.com/forums/sho...d.php?t=550771
http://www.m3post.com/forums/showthread.php?t=540446
http://www.e90post.com/forums/showthread.php?t=532585
http://www.e90post.com/forums/showth...ht=amp+upgrade
http://www.bilstereoforum.se/showthread.php?t=2356
http://www.e90post.com/forums/showthread.php?t=833581
http://www.m3post.com/forums/showthread.php?t=443043
http://www.diymobileaudio.com/forum/...creations.html
http://www.e90post.com/forums/showth...1#post16679904

Last edited by ctuna; 11-18-2014 at 11:49 AM.
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      11-18-2014, 12:11 PM   #12
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Quote:
Originally Posted by bmw325i View Post
You could use whatever combination you want after the headunit. Even if you just got a 4 channel amp and had 75-100 watts per channel of clean power for the stock front speakers and underseats it would be an improvement over the stock system. If you want you can go all out with whatever amps and processors you want.

For now I have an xd600/6, morel hybrid ovation II's, and jehnert xe200. I also have 2 alpine type r's powered by an audioque 2200d My headunit has time alignment, crossover, and eq adjustments which are useful. I'm happy with it for now. I'm going to keep the headunit, door speakers, and underseats and replace everything else with different equipment.

Nice!! I really want to get the xd600/6 and run the factory speakers for the time being. Once I get that all taken care of I will upgrade the speakers. Did you just unplug the center speaker?

I want to use the xd600/6 to power the front door mids/tweeter, the rear door mids, and the rear deck mids/tweeters. I would be deleting the center and under seat subs. I will also be putting in one JL W3V3 in the trunk for the Lows.

So in effect I would have 2 amps powering a 6.1 channel system. Should sound pretty good.

Quote:
Originally Posted by ctuna View Post
The factory crossovers are pretty sucky.
basicly a cap I think.
If you get and aftermarket door set it will come with
good crossovers. Most people put them in the Door
and only one run channel per door.
You don't have to run active some people do that for more
control.


Okay gotcha, I will probably utilize the factory crossover/ speakers for the time being running one channel per door until I buy nicer 4" component speakers with better crossovers.
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      11-18-2014, 12:37 PM   #13
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Quote:
Originally Posted by Tim603 View Post
Nice!! I really want to get the xd600/6 and run the factory speakers for the time being. Once I get that all taken care of I will upgrade the speakers. Did you just unplug the center speaker?

I want to use the xd600/6 to power the front door mids/tweeter, the rear door mids, and the rear deck mids/tweeters. I would be deleting the center and under seat subs. I will also be putting in one JL W3V3 in the trunk for the Lows.

So in effect I would have 2 amps powering a 6.1 channel system. Should sound pretty good.




Okay gotcha, I will probably utilize the factory crossover/ speakers for the time being running one channel per door until I buy nicer 4" component speakers with better crossovers.
Yes that will work especially if its temporary. I don't have a center speaker or rear speakers. I would reccomend you use the underseats for midbass.
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      11-18-2014, 12:56 PM   #14
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Quote:
Originally Posted by bmw325i View Post
Yes that will work especially if its temporary. I don't have a center speaker or rear speakers. I would reccomend you use the underseats for midbass.
Okay so you think I should do it like this (image below)

This would all be powered by the 6 channel amp
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      11-18-2014, 01:23 PM   #15
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Quote:
Originally Posted by Tim603 View Post
Okay so you think I should do it like this (image below)

This would all be powered by the 6 channel amp
Yes that would work. You could use the other set of rear speakers instead if you wanted there are no tweeters in the rear doors though.
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      11-18-2014, 04:38 PM   #16
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8 channels and dsp is why the Helix is attractive.

8 channels and dsp is why the Helix is attractive.
Also the power is more in line with the power ratings of
the stock speakers. I haven't heard of many frying the speakers
in even the HI FI with the jl 600/6 though.
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      11-18-2014, 05:14 PM   #17
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Quote:
Originally Posted by ctuna View Post
8 channels and dsp is why the Helix is attractive.
Also the power is more in line with the power ratings of
the stock speakers. I haven't heard of many frying the speakers
in even the HI FI with the jl 600/6 though.
Yeah it is definitely nice as far as the DSP and the 8 channels go. The only problem I see is there is only one Input for analog and its an aux. Other than that there is an optical input which I wouldnt be able to use.

My head unit AVH - X8500BHS uses RCA preouts (front and rear) so I would only be able to use one of the preouts converted to AUX which would disable any fade feature

I just question the design setup of that amp, it looks like it best used with a stock stereo (correct me if im wrong)
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      11-18-2014, 07:58 PM   #18
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Well it would correct the eq on the base system

Well it would correct the eq on the base system
but it would also allow precise eq and time delay if you haven't
already got it. The Jl is a perfectly good amp its what I have
against in a Hi Fi system.
A lot of people here are of the opinion that back speakers are useless.
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      11-19-2014, 08:58 AM   #19
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Quote:
Originally Posted by ctuna View Post
Well it would correct the eq on the base system
but it would also allow precise eq and time delay if you haven't
already got it. The Jl is a perfectly good amp its what I have
against in a Hi Fi system.
A lot of people here are of the opinion that back speakers are useless.
Yeah I hear that and I think the JL would compliment my AVH-X8500 nicely. The only reason I would run the back speakers instead of the rear door speakers is because the back speakers have tweeters, so when I upgrade the front and rears to components it should sound pretty awesome when powered by the JL

I have big plans for this car! Great platforms for speed, sound and good looks
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