E90Post
 


GTB Performance
 
BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Technical Forums > AUDIO/VIDEO + BLUETOOTH + Electronics/Alarm/Software > Help Amplifying stock Underseat Subs (e93)



Reply
 
Thread Tools Search this Thread
      06-07-2014, 09:29 AM   #1
big_ed
Private
 
Drives: e93 335i
Join Date: Oct 2013
Location: NYC

Posts: 85
iTrader: (0)

Help Amplifying stock Underseat Subs (e93)

Hey guys, I'm interested in amplifying the stock underseat subs in my e93 with an aftermarket amp. Just a little confused when shopping for an amp --

First - Are the stock underseats set up in 2 ohm or 4 ohm?

Also curious what you guys think is the most power (watts rms) I can push to them

And last but not least, if any of you have already done this set-up - What Amp would you recommend....

Thanks, and hope this isn't a repetitive topic - But I couldn't find much searching.
big_ed is online now  
0
Reply With Quote
      06-07-2014, 09:37 AM   #2
mathematics
Captain
 
mathematics's Avatar
 
Drives: 08 328i e93 alpine white
Join Date: May 2009
Location: Queens, NY

Posts: 650
iTrader: (0)

I don't recommend amping the stock woofers. I recommend replacing them.
__________________
iPhone 5s (iTunes library/iTunes radio/Waze, etc) to Airport Express via AirPlay to Tru Technology SSLD6i via aux out of Airport Express to Helix A4S Competition. Dynaudio MD102, Esotar 1200, and MW152. Jehnert Door Cards and mid-bass'.
mathematics is offline   United_States
0
Reply With Quote
      06-07-2014, 12:15 PM   #3
ctuna
Brigadier General
 
Drives: 325xi 06 wagon MT
Join Date: Jan 2010
Location: Santa Cruz, Ca

Posts: 4,232
iTrader: (0)

FYI

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.google.com/url?sa=t&rct=j...,d.cGU&cad=rja
http://www.musicarnw.com/page-2/
http://www.e90post.com/forums/attach...4&d=1278871872

Depends on the stereo type.
for ohms and size.(base system 6.5 inch and others 8 inch.
They will give you some bass with more power but they
are muddy.
You will want replace them pretty quickly.
ctuna is offline  
0
Reply With Quote
      06-07-2014, 02:04 PM   #4
cdgatti
Major
 
cdgatti's Avatar
 
Drives: e90 328i
Join Date: May 2011
Location: KY

Posts: 1,455
iTrader: (4)

ctuna - do you ever get tired of reposting the same old links over and over....
cdgatti is offline  
0
Reply With Quote
      06-07-2014, 04:04 PM   #5
ctuna
Brigadier General
 
Drives: 325xi 06 wagon MT
Join Date: Jan 2010
Location: Santa Cruz, Ca

Posts: 4,232
iTrader: (0)

Well if they were in the audio build thread I wouldn't

Well if they were in the audio build thread I wouldn't.
I guess some of them are but they are spread out.
And for the newbys its a wealth of info .
If they bother to study it.
ctuna is offline  
0
Reply With Quote
      06-07-2014, 05:22 PM   #6
Technic
Lieutenant General
 
Technic's Avatar
 
Drives: 2015 320i
Join Date: Apr 2005
Location: Ft Lauderdale, Florida

Posts: 11,109
iTrader: (17)

Garage List
2004 M3  [0.00]
Quote:
Originally Posted by cdgatti View Post
ctuna - do you ever get tired of reposting the same old links over and over....
I would direct that question to all the newbies that ask the same thing over and over again -like there is no sticky or search button available.
__________________
-2015 F30 320i, Imperial/Oyster, 8AT: August 2014 ED
-2012 E92 M3 Jerez Black/Rust Brown, M-DCT: Gone
-2008 E90 M3 Melbourne Red/Bamboo, 6MT: Gone
-2007 MK5 GTI United Grey/Grey, DSG: Gone
-2004 E46 M3 Carbon Black/Cinnamon, 6MT: Gone
Technic is offline   United_States
0
Reply With Quote
      06-07-2014, 05:24 PM   #7
Technic
Lieutenant General
 
Technic's Avatar
 
Drives: 2015 320i
Join Date: Apr 2005
Location: Ft Lauderdale, Florida

Posts: 11,109
iTrader: (17)

Garage List
2004 M3  [0.00]
Including your OEM system in your thread will determine the level and detail of help that you will receive...

Quote:
Originally Posted by big_ed View Post
Hey guys, I'm interested in amplifying the stock underseat subs in my e93 with an aftermarket amp. Just a little confused when shopping for an amp --

First - Are the stock underseats set up in 2 ohm or 4 ohm?

Also curious what you guys think is the most power (watts rms) I can push to them

And last but not least, if any of you have already done this set-up - What Amp would you recommend....

Thanks, and hope this isn't a repetitive topic - But I couldn't find much searching.
__________________
-2015 F30 320i, Imperial/Oyster, 8AT: August 2014 ED
-2012 E92 M3 Jerez Black/Rust Brown, M-DCT: Gone
-2008 E90 M3 Melbourne Red/Bamboo, 6MT: Gone
-2007 MK5 GTI United Grey/Grey, DSG: Gone
-2004 E46 M3 Carbon Black/Cinnamon, 6MT: Gone
Technic is offline   United_States
0
Reply With Quote
      06-07-2014, 05:53 PM   #8
bmw325i
Brigadier General
 
Drives: 2006 BMW 325i
Join Date: Oct 2010
Location: United States

Posts: 4,322
iTrader: (6)

Quote:
Originally Posted by mathematics View Post
I don't recommend amping the stock woofers. I recommend replacing them.
There is a significant improvement from amping stock logic 7 speakers, but I agree that replacing them is the best option.
bmw325i is offline  
0
Reply With Quote
      06-08-2014, 01:13 PM   #9
big_ed
Private
 
Drives: e93 335i
Join Date: Oct 2013
Location: NYC

Posts: 85
iTrader: (0)

I hear you guys. I Only considered amping the underseats because now that ive done what i wanted to thw cars audio i kind of miss the feeling of bass from under the seat vs my trunk sub.

My current setup has a trunk sub with stock power to the underseats.

So in theory i wanted to bring that feel or slight thump back from under the seats without adding tooo much additional bass to my 1000rms trunk sub.
big_ed is online now  
0
Reply With Quote
      06-08-2014, 09:00 PM   #10
Micura
Enlisted Member
 
Drives: E92 AW 328i MT
Join Date: Jul 2013
Location: Pembroke Pines FL

Posts: 47
iTrader: (0)

If it helps, I have the Hk system in an e92. The under seat woofers are 8 inch 4 ohm. I power them with a 100 w RMS x 2 amp high passed at 63 Hz. Tapped with Technik harness. 60 Hz down goes to the trunk sub.
Micura is offline   United_States
0
Reply With Quote
      06-08-2014, 10:11 PM   #11
big_ed
Private
 
Drives: e93 335i
Join Date: Oct 2013
Location: NYC

Posts: 85
iTrader: (0)

Quote:
Originally Posted by Micura View Post
If it helps, I have the Hk system in an e92. The under seat woofers are 8 inch 4 ohm. I power them with a 100 w RMS x 2 amp high passed at 63 Hz. Tapped with Technik harness. 60 Hz down goes to the trunk sub.
Very helpful. Just the answer I needed. Thx!
big_ed is online now  
0
Reply With Quote
      06-08-2014, 10:19 PM   #12
mathematics
Captain
 
mathematics's Avatar
 
Drives: 08 328i e93 alpine white
Join Date: May 2009
Location: Queens, NY

Posts: 650
iTrader: (0)

Doubt you'll be happy with that.
__________________
iPhone 5s (iTunes library/iTunes radio/Waze, etc) to Airport Express via AirPlay to Tru Technology SSLD6i via aux out of Airport Express to Helix A4S Competition. Dynaudio MD102, Esotar 1200, and MW152. Jehnert Door Cards and mid-bass'.
mathematics is offline   United_States
0
Reply With Quote
      06-08-2014, 10:54 PM   #13
Micura
Enlisted Member
 
Drives: E92 AW 328i MT
Join Date: Jul 2013
Location: Pembroke Pines FL

Posts: 47
iTrader: (0)

Quote:
Originally Posted by mathematics View Post
Doubt you'll be happy with that.
Depends what you want. With a couple of amps and a sub you can improve the HK system nicely. I am older now so I am not looking for the db's I was 25 years ago, just good sounding tunes. And the HK system limits the upgrading significantly unless you're willing to spend $$$. On my e46 it was a piece of cake: a set of Morels up front, an ID sub, a couple of amps and an audio control matrix and you had superb music. But with the e92 it's not as simple. If $$$ is no object, of course upgrading the under seat subs is ideal, but amping them is not that bad. Turning off Logic, fading full front, adjusting the eq to get rid of the peaks, and balancing for what you are listening to yields very good sound with the amped woofers and a sub.
Micura is offline   United_States
0
Reply With Quote
      06-09-2014, 09:30 AM   #14
bmw325i
Brigadier General
 
Drives: 2006 BMW 325i
Join Date: Oct 2010
Location: United States

Posts: 4,322
iTrader: (6)

Quote:
Originally Posted by mathematics View Post
Doubt you'll be happy with that.
If its the logic 7 system and they are just for midbass I'm sure it will sound decent. Can always replace them later.
bmw325i is offline  
0
Reply With Quote
      06-09-2014, 02:11 PM   #15
jeffb335
BimmerPost Supporting Vendor

 
jeffb335's Avatar
 
Drives: BMW
Join Date: Jan 2012
Location: California

Posts: 443
iTrader: (0)

A couple stereo iterations ago I had the stock L7 underseats running off an ARC mini amp, didnt push them very hard and used them only for midbass as I have a trunk sub, it worked pretty well.

Eventually went to Jenherts, still only doing midbass, but I of course can push them harder and they sound great.
jeffb335 is offline  
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 09:07 AM.




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