E90Post
 


GTB Performance
 
BMW 3-Series (E90 E92) Forum > BMW E90/E92/E93 3-series General Forums > Regional Forums > Africa > Infinity Speakers Upgrade



Reply
 
Thread Tools Search this Thread
      01-12-2011, 06:29 AM   #1
Menno11
Member
 
Menno11's Avatar
 
Drives: 320d
Join Date: Sep 2008
Location: Cape Town

Posts: 261
iTrader: (0)

Garage List
2005 320d  [0.00]
Send a message via Skype™ to Menno11
Infinity Speakers Upgrade

Feeling that the stock BMW E90 sound system was lacking in most aspects, I decided that a full speaker replacement was in order.

The reason for settling with Infinity was that they offered shallow mount speakers (specifically for the BMW’s shallow doors) and 2ohm impedance, which meant they can run off the stock HU power.

I have done the install piece by piece as I had the time and money, but have finally completed the entire install

The front speakers were a direct replacement of the 4” with the Infinity 42.9i
RMS power 50W, peak 100W running at 2ohm.

Magnet comparison
Name:  IMG_0378.jpg
Views: 2271
Size:  103.4 KB
Name:  IMG_0377.jpg
Views: 2037
Size:  131.6 KB


I am still manufacturing the adapter plates and will be fitting them behind the OEM grills again soon, but in the meantime I enjoy the look of the Infinity grill.
Name:  IMG_0383.jpg
Views: 3869
Size:  138.4 KB

Following a dismal failure of trying to amplify the stock BMW underseat woofers, I replaced the burnt coil NOKIA 6.5” 35W speakers with Infinity 6.5” 5020CS (just the mid-woofer part)
RMS power 75W peak 225W at 4 ohm
Comparison of the inverted speakers and my home made adapter rings
Name:  IMG_0675.jpg
Views: 3453
Size:  165.6 KB

The signal is tapped from the original speaker wire going to the underseat woofer
Name:  IMG_0270.jpg
Views: 2557
Size:  115.7 KB
and routed to the boot to the Line out converter
Name:  IMG_0265.jpg
Views: 2115
Size:  124.0 KB
where the pre-out signal is split to the mono-block amp and the 4 channel amp.

For the underseat woofers a 4 channel Infinity 475a amplifier was used
RMS power 4 x 75W at 4 ohm and a Starsound 2300 mono blck used to amplify the sub
RMS power 300W, peak (claimed 2300W)
Name:  IMG_0683.jpg
Views: 2371
Size:  142.2 KB


In the boot I used a 12” 1260 Infinity sub-woofer SVC
RMS power 300W peak 1200W at 4 ohm
The sub was built into a ported 56 liter enclosure with the port venting through the arm rest into the cabin, thus creating a pressurized cabin.
Name:  IMG_0672.jpg
Views: 2068
Size:  123.6 KB

The end result?
Name:  IMG_0681.jpg
Views: 2097
Size:  151.8 KB
Name:  IMG_0678.jpg
Views: 2007
Size:  164.7 KB

Well following endless tuning (unfortunately manual, no osiliscope ) the system plays the punchy kick drum notes perfectly through the underseat woofers, and the rolling base comes through impressively from the 12” sub for an all round much better musical experience. Better pics to follow with a full photo-shoot (any volunteers?)
Menno11 is offline   South Africa
0
Reply With Quote
      01-12-2011, 06:49 AM   #2
Jenich
Private First Class
 
Jenich's Avatar
 
Drives: 2005 model E90 320D Sportspack
Join Date: Jun 2010
Location: Johannesburg

Posts: 111
iTrader: (0)

Garage List
2005 E90 320D  [2.50]
Hey Menno, well done,
when you coming back to Johannesburg
Jenich is offline   South Africa
0
Reply With Quote
      01-12-2011, 10:36 AM   #3
Menno11
Member
 
Menno11's Avatar
 
Drives: 320d
Join Date: Sep 2008
Location: Cape Town

Posts: 261
iTrader: (0)

Garage List
2005 320d  [0.00]
Send a message via Skype™ to Menno11
I'm in Jhb next week Monday and Tuesday, but sleeping over in Potchefstroom
Menno11 is offline   South Africa
0
Reply With Quote
Reply

Bookmarks

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Forum Jump


All times are GMT -5. The time now is 04:39 PM.




e90post
Powered by vBulletin® Version 3.7.0
Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
1Addicts.com, BIMMERPOST.com, E90Post.com, F30Post.com, M3Post.com, ZPost.com, 5Post.com, 6Post.com, 7Post.com, XBimmers.com logo and trademark are properties of BIMMERPOST