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Go Back   Bimmerfest - BMW Forums > BMW Model Discussions > 7 Series / 8 Series > 7 Series - E38 (1995 - 2001)

7 Series - E38 (1995 - 2001)

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  #1  
Old 12-30-2005, 04:39 PM
emmsys emmsys is offline
ALWAYS drive a Bimmer.
Location: Montreal, Canada
 
Join Date: Nov 2005
Posts: 44
Mein Auto: 2001 BMW 740i
Adding Infinity 1230 12" subwoofer in 2001 740i

Hi,

I got a 12" subwoofer for X-mas . The thing is I really don't know where to start. Do I need a separate amp for this subwoofer? Can I tap into the existing amp? If someone can point me to a DIY guide to adding a sub (along with all of the hardware needed) I would really appreciate it. I have the Business radio (not the HK). I did a search and found some pictures showing what it took it install the Infinity Basslink but it's not the same setup for me. Thanks in advance for helping me out!

e
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  #2  
Old 12-30-2005, 04:42 PM
jacksprat jacksprat is offline
what?
Location: seattle
 
Join Date: Apr 2003
Posts: 397
Mein Auto: e65
you will need an aftermarket amp, a subwoofer box (unless yours came with one), and an interface with your factory radio/cd player
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  #3  
Old 12-30-2005, 07:24 PM
NTB NTB is offline
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Location: MPLS, MN
 
Join Date: Oct 2004
Posts: 161
Mein Auto: 2004 LS430 2004 Armada
http://www.cardomain.com/ride/652272/3

It is a bit of work if you have the DSP system in your car.

Let me know if you have any question about installing it, you will need to cut some wires and get a CD cable from your Dealership.
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  #4  
Old 01-01-2006, 03:19 PM
emmsys emmsys is offline
ALWAYS drive a Bimmer.
Location: Montreal, Canada
 
Join Date: Nov 2005
Posts: 44
Mein Auto: 2001 BMW 740i
Hi,

Thanks for the link and the information. I do have the DSP system. I'm sure I can find a dealer to install everything for me but I really want to do it myself just for the satisfaction . My brother, father and I restored 2 1971 Corvettes...so adding a subwoofer, amp etc. shouldn't be THAT tough right? I'll keep y'all updated on the progress but first I need to read up on car audio systems first, then the BMW DSP system etc. It might take a little while before I post any major results! Wish me luck!

e
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  #5  
Old 01-01-2006, 09:10 PM
NTB NTB is offline
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Location: MPLS, MN
 
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Posts: 161
Mein Auto: 2004 LS430 2004 Armada
Quote:
Originally Posted by emmsys
Hi,

Thanks for the link and the information. I do have the DSP system. I'm sure I can find a dealer to install everything for me but I really want to do it myself just for the satisfaction . My brother, father and I restored 2 1971 Corvettes...so adding a subwoofer, amp etc. shouldn't be THAT tough right? I'll keep y'all updated on the progress but first I need to read up on car audio systems first, then the BMW DSP system etc. It might take a little while before I post any major results! Wish me luck!

e

It really depends on how you want to wire the system, if you want to use line level converters (LOC) off the factory amp you will short change your system seeing that you will not be able to change the crossover points from the stock ones that are way wrong, this is why there is a whole in the sound.

Let me know if you run into any problems during the install and i will try to talk you thru them.
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  #6  
Old 01-04-2006, 10:47 AM
emmsys emmsys is offline
ALWAYS drive a Bimmer.
Location: Montreal, Canada
 
Join Date: Nov 2005
Posts: 44
Mein Auto: 2001 BMW 740i
Hi,

In the link given above (cardomain) it shows the Nav system. I've got a 2001 740i but it doesn't have the Nav system. My radio has the little orange/black LCD screen at the top right with some buttons below to change the current DSP, reverb etc. (and beside that screen there's the cassette player). That whole area can be covered with a hide-away panel. Was the Nav system an option because for some reason I'm get the feeling all 740i's should have had one? My car is a Canadian model.

e
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  #7  
Old 01-05-2006, 06:43 AM
2006_750Li_ED's Avatar
2006_750Li_ED 2006_750Li_ED is offline
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Location: Los Angeles
 
Join Date: Jul 2005
Posts: 502
Mein Auto: 2006 750Li Euro Delivery
all U.S 2001 7 series had standard the navigation system, phone and premium sound (which is a feature you seem to have).
2001 had an early production starting April 2000, and in September 2000 they started putting the new Mark 3 computer.navigation system with voice activation and Timeport phone.
Your car was made for Canadian market and thus had less standard features.
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  #8  
Old 01-23-2006, 09:53 AM
emmsys emmsys is offline
ALWAYS drive a Bimmer.
Location: Montreal, Canada
 
Join Date: Nov 2005
Posts: 44
Mein Auto: 2001 BMW 740i
little update

Hi,

I finally picked up an amp for the setup. I really didn't want to spend much so I know there's probably 10000 better amps out there but I heard some good things about the Kenwood KAC-7252 (from coworkers and tuners). It'll pump 500 watts at 4ohms (bridged) which is more then enough for me. Unforuntately I haven't had the time to consider wiring. I'll keep you all posted.

EC
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  #9  
Old 07-27-2006, 10:36 AM
emmsys emmsys is offline
ALWAYS drive a Bimmer.
Location: Montreal, Canada
 
Join Date: Nov 2005
Posts: 44
Mein Auto: 2001 BMW 740i
Cool

Hi,

So I FINALLY got the system installed! I just disconnected the 4 BMW "subs" (more like tweaters hehe) and now I'm enjoying some serious base. I'm not into huge amounts of bass that attracts too much attention so I have the amp setup perfectly for me. The installation wasn't so tough considering BMW lays out all of the connectors for you neatly in the trunk. BUT, on a sad note, I just blew the front driver's side door speaker! While removing the crackling speaker I noticed there's a very very faint hissing in the front door speakers when I put the key and turn the ignition (before starting the car). The driver's side speaker ended up crackling like crazy to the point I couldn't drive the car...even with the radio off! If you put your ear directly on the front door speakers you can hear something. We disconnected the amp and all, and the hissing is still there. Is this a normal DSP thing?

e

Last edited by emmsys; 07-27-2006 at 10:38 AM.
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  #10  
Old 12-11-2010, 11:21 PM
TiketE38 TiketE38 is offline
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Location: virginia
 
Join Date: Dec 2010
Posts: 36
Mein Auto: BMW E38
So you substitute ur factory 4 subs wires with aftermarket sub wires?
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