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01’ bmw740 upgrading system

Printed From: the12volt.com
Forum Name: Car Audio
Forum Discription: Car Stereos, Amplifiers, Crossovers, Processors, Speakers, Subwoofers, etc.
URL: https://www.the12volt.com/installbay/forum_posts.asp?tid=57445
Printed Date: May 10, 2025 at 12:07 AM


Topic: 01’ bmw740 upgrading system

Posted By: mxxmikexx
Subject: 01’ bmw740 upgrading system
Date Posted: June 10, 2005 at 4:05 PM

ive got a customer who has a 2001 7 series who wants to upgrade the factory stereo system. it has the factory nav. with the really wide factory radio beneath it. does anyone make a dash kit to accomidate a standard din radio in there? is the factory amp in the rear 1/4 like on the 3 series? any feedback from somebody who has experience with the stereos in these vehicles would be appreciated !!!!

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Mike Battaglia
Specialized Car Audio
Bensenville IL 60106



Replies:

Posted By: dwarren
Date Posted: June 10, 2005 at 4:19 PM
why don't you just amp the factory speakers? or amp aftermarket speakers?

Use a good LOC and the results are usually pretty good.

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Posted By: redpeppers
Date Posted: June 11, 2005 at 12:03 AM

What i would do is....leave the factory deck in, because it has a good dynamic range......upgrade the speakers and put an amp on them.....the factory amp is in the rear/drivers side with the navi and cd changer......there is also a am/fm ant. back there too......also nav-tv has a composite to VGA box for the navi too.



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Where theres is a wire there's a way.




Posted By: mxxmikexx
Date Posted: June 18, 2005 at 11:33 AM
well, i plan on using a mtx 4 channel amp which does accept hi-level inputs. So i guess the most logical way to go about this is leaving in the factory head unit. I've heard that the ouput level from the factory head unit is "somewhere between lo and hi-level" so im not sure if thats enough to feed that signal into the hi-level input that the mtx amps have? any ideas? mtx says you can use a hi-level input ranging anywhere between 100Mv and 10V. does any of the factory nav. go through the factory stereo amp?

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Mike Battaglia
Specialized Car Audio
Bensenville IL 60106





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