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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Technical Forums > AUDIO/VIDEO + BLUETOOTH + Electronics/Alarm/Software > Logic7 SWS-8 Underseat Sub Upgrade FAQ



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      09-08-2012, 05:51 PM   #89
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Quote:
Originally Posted by Technic View Post
Note: the Logic7 OEM woofers are 4 ohms (70W), the HiFi woofers are 2 ohms (40W), the Stereo woofers (6.5") are 4 ohms (15W in parallel with the door full range).

Nice write up.
The bavauto site has published opposite specs - they say to use the 2ohm with Logic7 and 4ohm for HiFi. Can someone please confirm that this is incorrect? I just ordered the 2 ohm for my L7 car and want to switch speakers if needed. ty!
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      09-08-2012, 06:08 PM   #90
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Quote:
Originally Posted by Peertwelve View Post
The bavauto site has published opposite specs - they say to use the 2ohm with Logic7 and 4ohm for HiFi. Can someone please confirm that this is incorrect? I just ordered the 2 ohm for my L7 car and want to switch speakers if needed. ty!
I posted the OEM specs.

You decide.
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      09-09-2012, 01:44 PM   #91
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I have a 07/2009 build UK car with base stereo. My 6.5" were bolted and not glued. Maybe this is a slight difference between US and UK specs?
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      09-09-2012, 01:58 PM   #92
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Quote:
Originally Posted by mob17 View Post
I have a 07/2009 build UK car with base stereo. My 6.5" were bolted and not glued. Maybe this is a slight difference between US and UK specs?
It was a production change after 09/09.
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      09-09-2012, 02:07 PM   #93
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SWS 8xi

For what it's worth, I have a pair of undersea sws8xi subs in their original boxes .....these are the 2 ohms.....used for less than a month...purchased from amazon 2 months ago. (proof with amazon receipt)
Oh...and I have the spacers and connectors too.

It's hits hard...the wife doesn't want it...so it's got a go.
Just in case if anyone is interested....
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      09-09-2012, 02:30 PM   #94
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Quote:
Originally Posted by sid4852
For what it's worth, I have a pair of undersea sws8xi subs in their original boxes .....these are the 2 ohms.....used for less than a month...purchased from amazon 2 months ago. (proof with amazon receipt)
Oh...and I have the spacers and connectors too.

It's hits hard...the wife doesn't want it...so it's got a go.
Just in case if anyone is interested....
Instead of bumping every thread involving the Earthquakes, how about making just one post in the FS section, where it belongs?
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      09-17-2012, 11:02 AM   #95
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I apologize, my bad.
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      12-20-2016, 02:58 AM   #96
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So are these still the best option as far as producing bass? I don't want to go the trunk enclosure route for multiple reasons... any input appreciated.
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      01-01-2017, 10:03 PM   #97
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So are these still the best option as far as producing bass? I don't want to go the trunk enclosure route for multiple reasons... any input appreciated.
Hey man, I had looked at the SWS subs but thought they were pricey and there were mixed reviews.

I recently had Helix match speakers and thought the sub was good, I then changed the speakers and sub for Focal, and sounds so much better. The bass on the focal underseat sub woofer sounds amazing, goes lower and you do feel the seats vibrate as if you getting a massage!

I would say just check them out
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      01-01-2017, 10:05 PM   #98
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Quote:
Originally Posted by DJWabbles View Post
Quote:
Originally Posted by SeanCon View Post
So are these still the best option as far as producing bass? I don't want to go the trunk enclosure route for multiple reasons... any input appreciated.
Hey man, I had looked at the SWS subs but thought they were pricey and there were mixed reviews.

I recently had Helix match speakers and thought the sub was good, I then changed the speakers and sub for Focal, and sounds so much better. The bass on the focal underseat sub woofer sounds amazing, goes lower and you do feel the seats vibrate as if you getting a massage!

I would say just check them out
Thanks for the response. But how does it compare to the stock underseat sub (logic 7 I believe). Because that definitely vibrates the seat but I need more haha.
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      01-01-2017, 10:11 PM   #99
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Quote:
Originally Posted by SeanCon View Post
Thanks for the response. But how does it compare to the stock underseat sub (logic 7 I believe). Because that definitely vibrates the seat but I need more haha.
Well having a good AMP does make a whole lot of difference, if I wanted to shake my car to pieces I can as the gains on my amp are less than half and the subs hit low as anything I have heard.

I have heard the Logic 7 and it does sound good but doesn't go as low, have heard them in my uncle's X5 and also an M4 at a showroom.

I have couple vids of the focals in my signature but again won't do it justice, have to be there to hear it and feel it!
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