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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Technical Forums > AUDIO/VIDEO + BLUETOOTH + Electronics/Alarm/Software > after market radio/cd 7 inch lcd



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      12-26-2013, 08:01 PM   #1
gray boy
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after market radio/cd 7 inch lcd

looking for info on using after market radio/LCD vs BMW after market
any ideas.. i have questions; like- what power output to get,

i have the surround sound according to the window sticker, i assume its the 420 watt based on the size of the amp also.
But the Bentley says the 420 watt comes with the navigation system. it also shows floor mounted woofers for the base 180 watt radio. confusing t say the least.
thanks
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      12-26-2013, 08:36 PM   #2
ctuna
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You need to find out for sure what you got.

You need to find out for sure what you got.
L7 or Hi Fi if you have a car 09 or older.

Find a free vin checker site and print out your options.
look at the option number for the sound system.
677 = l7= Top Hi Fi , 676=Hi Fi
These systems can be in a Nav/idrive or in the Pro Radio versions
they are separate amp and speaker systems.
Read the following
links

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.bawarec.ru/manuals/3er/e9...3er-e90-12.pdf
http://www.musicarnw.com/page-2/
http://www.e90post.com/forums/attach...4&d=1278871872

If you have logic 7 sound and you want to change the Head Unit
then the amplifier must go to. Why because there is and optical
connection between the head unit and amp and nobody makes
a aftermarket head unit that has the same type of optical output.

Last edited by ctuna; 12-26-2013 at 08:47 PM.
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      12-26-2013, 09:27 PM   #3
gray boy
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THANKS ctuna
good info
i have the 688 which i understands replaces 677 for top hifi
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      12-27-2013, 11:31 AM   #4
bmw325i
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Quote:
Originally Posted by gray boy View Post
THANKS ctuna
good info
i have the 688 which i understands replaces 677 for top hifi
Do you have a center channel in the dash? Pdc or assist? What are you trying to install?
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