E90Post
 


GTB Performance
 
BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Technical Forums > AUDIO/VIDEO + BLUETOOTH + Electronics/Alarm/Software > BSW mid crossover question



Reply
 
Thread Tools Search this Thread
      09-20-2012, 11:37 AM   #1
cdgatti
Lieutenant Colonel
cdgatti's Avatar
20
Rep
1,553
Posts

 
Drives: e90 328i
Join Date: May 2011
Location: KY

iTrader: (4)

BSW mid crossover question

In my hifi system I replaced my stock door mids/tweeters with the mids from the BSW kit and polk DB tweeters. The polk tweeters have an inline passive that I believe is 12db at ~4000HZ. The BSW is just wired directly to my JL amp, no external crossover that I have added. They are high passed about 180hz at the amp.

Does anyone know if the BSW mids have any kind of internal low pass crossover circuit?
Appreciate 0
      09-20-2012, 12:40 PM   #2
Rollo`
First Lieutenant
6
Rep
309
Posts

 
Drives: 2009 328i
Join Date: Jul 2010
Location: US

iTrader: (1)

I think there must be some kind of crossover built in to the wiring somewhere...I bought the BSW component set (which I am going to return) and I think it uses the same drivers as the drop in and just adds a crossover.

I am curious to know how you feel about your upgrade? upgrading the front mid/tweeter make a big difference?
Appreciate 0
      09-20-2012, 01:34 PM   #3
cdgatti
Lieutenant Colonel
cdgatti's Avatar
20
Rep
1,553
Posts

 
Drives: e90 328i
Join Date: May 2011
Location: KY

iTrader: (4)

Are you saying there is a separate outboard passive crossover with the component set?
The bsw mids and polk tweeters were a big improvement over stock, but I am now looking to improve upon them.
Appreciate 0
      09-20-2012, 02:09 PM   #4
kaigoss69
Brigadier General
kaigoss69's Avatar
United_States
65
Rep
3,090
Posts

 
Drives: '08 335i
Join Date: Jul 2008
Location: JAX

iTrader: (5)

There's no room inside a speaker for crossovers. If they are used, they will be visibly integrated into the external wiring.
__________________
Mobridge DA2 > JBL MS-8 > ARC XDi 600/4 > JBL Gti 408 Mids & Vifa XT19 Tweeters; PG Ti2 1600.5 > Morel HCW-10 & IDMax 15
Appreciate 0
      09-20-2012, 02:47 PM   #5
taibanl
Brigadier General
taibanl's Avatar
65
Rep
3,648
Posts

 
Drives: BMW
Join Date: Sep 2010
Location: NA

iTrader: (4)

Afaik , the standard bsw mids dont have a xover as they are intended for factory amp power. They dd bring a new kit to market intended for aftermarket power which includes a dedcated xover.
Appreciate 0
      09-20-2012, 08:19 PM   #6
Rollo`
First Lieutenant
6
Rep
309
Posts

 
Drives: 2009 328i
Join Date: Jul 2010
Location: US

iTrader: (1)

Quote:
Originally Posted by taibanl View Post
Afaik , the standard bsw mids dont have a xover as they are intended for factory amp power. They dd bring a new kit to market intended for aftermarket power which includes a dedcated xover.
Yep...I ordered one of those new component kits when I was trying to solve the distortion problem that turned out to be caused by my defective ipod.

I am going to return them but was thinking of exchanging for the drop-ins. The factory speakers sound pretty good powered by the JL XD600....I'm not sure if it is worth taking off the door panels to make the change...
Appreciate 0
      09-23-2012, 08:17 AM   #7
cdgatti
Lieutenant Colonel
cdgatti's Avatar
20
Rep
1,553
Posts

 
Drives: e90 328i
Join Date: May 2011
Location: KY

iTrader: (4)

Would it be worth it to re-open the doors and put some outboard passive crossovers on my mids/tweeters? Would the sound of the BSW mids improve if I lowpassed them around 4000? They are powered by a JL XD400.
Appreciate 0
      09-23-2012, 09:26 AM   #8
kaigoss69
Brigadier General
kaigoss69's Avatar
United_States
65
Rep
3,090
Posts

 
Drives: '08 335i
Join Date: Jul 2008
Location: JAX

iTrader: (5)

The mids roll-off naturally, so no need to chop off the high end. Besides, you may make it worse than it is now. If you were to do it right, you would get 2-way passive crossovers and install them in the doors. That way, there would not be any frequency over- or underlap between the tweeters and mids.
__________________
Mobridge DA2 > JBL MS-8 > ARC XDi 600/4 > JBL Gti 408 Mids & Vifa XT19 Tweeters; PG Ti2 1600.5 > Morel HCW-10 & IDMax 15
Appreciate 0
      09-23-2012, 02:10 PM   #9
Rollo`
First Lieutenant
6
Rep
309
Posts

 
Drives: 2009 328i
Join Date: Jul 2010
Location: US

iTrader: (1)

So was all crossover work done by the factory amp in the hi-fi system? In that case are my mids and tweets both receiving full range now that they are powered by the XD600?
Appreciate 0
      09-23-2012, 02:22 PM   #10
kaigoss69
Brigadier General
kaigoss69's Avatar
United_States
65
Rep
3,090
Posts

 
Drives: '08 335i
Join Date: Jul 2008
Location: JAX

iTrader: (5)

Quote:
Originally Posted by Rollo`
So was all crossover work done by the factory amp in the hi-fi system? In that case are my mids and tweets both receiving full range now that they are powered by the XD600?
No. There is only one factory wire going to the doors. It carries the entire signal for the mid and tweeter together. The crossover is handled at the tweeter, by a capacitor to cut out the low frequencies. Like I said, the mid plays full range and the high frequencies roll off naturally.
__________________
Mobridge DA2 > JBL MS-8 > ARC XDi 600/4 > JBL Gti 408 Mids & Vifa XT19 Tweeters; PG Ti2 1600.5 > Morel HCW-10 & IDMax 15
Appreciate 0
      09-23-2012, 10:04 PM   #11
cdgatti
Lieutenant Colonel
cdgatti's Avatar
20
Rep
1,553
Posts

 
Drives: e90 328i
Join Date: May 2011
Location: KY

iTrader: (4)

Quote:
Originally Posted by kaigoss69 View Post
The mids roll-off naturally, so no need to chop off the high end. Besides, you may make it worse than it is now. If you were to do it right, you would get 2-way passive crossovers and install them in the doors. That way, there would not be any frequency over- or underlap between the tweeters and mids.
THAT is what I am asking, will a set of passive outboard crossovers in the doors make a difference VS letting the mids roll off naturally?
Appreciate 0
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 12:09 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