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E60 / E61 (2004 - 2010)
BMW 5-Series E60 Sedan was first seen in the Unites States in the fall of 2003 with a 2004 Model Year designation. The E61 wagon followed shortly there after. The E60/E61 5 series is now available as a 528i, 528xi, 535i, 535xi, 550i and a 535xi sports wagon! -- View the E60 Wiki

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  #1  
Old 03-19-2019, 10:57 PM
RamblinE60 RamblinE60 is offline
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Location: St. Louis Missouri
 
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Mein Auto: BMW E60 525i
Stereo Questions

QUESTION #1 - I have a 2004 BMW 525i, and I love it, but the stereo sucked to be honest. So I decided to get 2, 12" kicker COMP r Sub-woofers. They really do pack the punch, but I read all across the internet to find a way to port the air into the cabin of the car from the trunk.
Are there any ways or recommendations to port two sub woofers into the cabin?

The box is ported in-between both sub-woofers, meaning both subs are ported into one port in the center of the box.

I just want a little bit louder and clearer sound.

QUESTION #2 - What is the best option to louden' up the Harmon/Kardon Speakers, I have not been able to find a aftermarket amplifier for the 525i. If anyone knows a way to, or of an amplifier that would work, please let me know!

I really appreciate it guys! take care

The picture uploaded is an example of the box
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  #2  
Old 03-28-2019, 11:55 AM
cvgtpc1 cvgtpc1 is offline
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Location: Atlanta area
 
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Posts: 769
Mein Auto: 2008 E60, 2008 E70
Quote:
Originally Posted by RamblinE60 View Post
QUESTION #1 - I have a 2004 BMW 525i, and I love it, but the stereo sucked to be honest. So I decided to get 2, 12" kicker COMP r Sub-woofers. They really do pack the punch, but I read all across the internet to find a way to port the air into the cabin of the car from the trunk.
Are there any ways or recommendations to port two sub woofers into the cabin?

The box is ported in-between both sub-woofers, meaning both subs are ported into one port in the center of the box.

I just want a little bit louder and clearer sound.

QUESTION #2 - What is the best option to louden' up the Harmon/Kardon Speakers, I have not been able to find a aftermarket amplifier for the 525i. If anyone knows a way to, or of an amplifier that would work, please let me know!

I really appreciate it guys! take care

The picture uploaded is an example of the box

You should post your question here also....https://www.bimmerfest.com/forums/forumdisplay.php?f=53
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---------
- 08 E60 LCI 528i - VIN: C112981, Engine: N52K, MONACOBLAU METALLIC, Prod.date: 2008-05-15
- 08 E70 X5 3.0Si - VIN: L008866, Engine: N52K, TITANSILBER METALLIC, Prod.date: 2007-12-22

RIP 04/23/18
- 02 E39 525i
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  #3  
Old 03-28-2019, 04:18 PM
boost7 boost7 is offline
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Mein Auto: 05 545
if you have the center ski passage on the rear seat, you can remove that cartridge and allow the sub to vent into your cabin from there.

if you don't, you can cut an opening in the same area yourself, or talk to a stereo shop that does custom work if they can do it nice and neat for you for a decent price.
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