[Teddy42TR]

hello everyone

i have hifi sound system in my bmw e90 2005.
i recently bought speakers from logic7 for my doors, but my car doesnt have rear door speakers from factory, so i bought a new door panel with speakers.
Now i dont have cables to connect the rear door speakers.

I have HIFI Amplifier.
How can i get cables for my rear door speakers? Where can i get the cable from any tips? I have the logic 7 speakers in rear door with te small tweeter in it.
Where do i need to rewire? any tips? ideas?

[ctuna]

Did you have in your rear deck?
As shown in the second link.
Did the car come with option 676 Hi Fi.
Or are you saying you have a hi fi amp available.

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=138949
http://www.e90post.com/forums/attach...1&d=1209780865
http://bmwcoders.com/forum/3-er-8/bm...1-e92-e93-291/
http://technicpnp.com/menuDiagrams/d...e90_92_93.html
http://www.musicarnw.com/page-2/
http://www.e90post.com/forums/attach...3&d=1169133185
http://www.e90post.com/forums/attach...1&d=1209780605
http://www.e90post.com/forums/showthread.php?t=641323
http://www.e90post.com/forums/attach...4&d=1278871872
http://www.e90post.com/forums/showth...343673speakers

The Hi Fi system only has 6 channels so it's the door or the rear deck.
I think you will find that the Hi Fi amp will have a hard time driving the
Logic 7 speakers.

You will have to run wires to the doors if you want to run those speakers but
it may not make things sound any better without aftermarket amplification.

[Teddy42TR]

Yes, I have hifi system.
Where can I run the wire from?

What u mean with hard time driving the logic 7 speakers?
Is the hifi amp Too weak? Might it die?

I have the logic 7 amp too, but its too difficult for me to retrofit it. Looked so much into it, but result, not gonna do it, cuz its too hard. Wiring etc.

And another question, is there a alternative (not so expensive) aftermarket amplifier I can put instead of the hifi, to get good sound of the logic 7 speakers? Same wiring, plug and player etc. Better than the hifi.

[ctuna]

Almost any 6 channel aftermarket amp would be better.
And and amp would make more difference than changing
the speakers cause it's the weakest link.
The Hi Fi amp doesn't even do a good job running the stock speakers.

Hi Fi upgrades

http://www.e90post.com/forums/showth...ighlight=level
http://www.m3post.com/forums/showthread.php?t=540446
http://www.e90post.com/forums/showth...hlight=technic
http://www.e90post.com/forums/showthread.php?t=532585
http://www.e90post.com/forums/showthread.php?t=833581
http://www.m3post.com/forums/showthread.php?t=443043
http://www.e90post.com/forums/showthread.php?t=324214
https://www.bimmer-tech.net/blog/ite...-audio-for-bmw
http://www.e90post.com/forums/showth...hlight=level+3

If you already have all the channels hooked up as they would be in a stock hi fi system in the US
you have no channels left to drive another set of speakers.
If you don't know how to run a set of wires you probably shouldn't be modifying your car.
You would need an 8 channel amp to run all door locations and rear deck and under seats.
(and your new set)

In the stock configuration 2 channels go to the front door's , 2 channels go to the rear deck
and 2 channels go to the under seat that is all the channels that the stock amp has.

[Teddy42TR]

i already wired the rear door speakers.
i attached them to the wire of the rear deck speakers.
now my biggest problem is. Left rear door & Deck speakers stopped working. no sound
what could the problem be?
Amplifier dead?
amplifier not strong enough?

[Ali-E90]

The OEM amp is only designed to run the speakers for that same option. Different ohm loads from changing speakers won't yield good results.

As mentioned just get an aftermarket amp and you'll be far better off.

[ctuna]

If you wired them to the rear deck speakers the load is mostly
likely in parallel do you understand what that means?
You need to look up some stereo 101 stuff on parallel and
series wiring .
The amp is already weak when running one set of speakers,on one channel.
If you put two speakers in parallel and they are 2 ohm speakers
you now have a one ohm load, when that amp can barely do
2 ohms .

Plus to get any benefit from better speakers it requires and amp
capable of driving them , which means a better amp.



What you are doing is going to burn the amp up.
If you haven't already.

https://www.termpro.com/articles/spkrz.html