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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Technical Forums > AUDIO/VIDEO + BLUETOOTH + Electronics/Alarm/Software > Validating my E90 (HIFI) audio upgrade plan



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      11-05-2012, 04:20 PM   #1
black335isport
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Validating my E90 (HIFI) audio upgrade plan

I have been reading many of the topics on this forum and I am planning to start the audio upgrade as a DIY within 1-2 weeks. I have still a couple of questions for which I hope I would find the answers within this thread.

So, I will start from an E90 (2009 model) with HIFI audio and I have planned the following:
1. Amp upgrade to JL XD 600/6. The amp will power the front speakers, under seat woofers, rear deck speakers.
2. Front speakers/tweeters to Morel Hybrid 402 (the 2012 model which replaces Morel Hybrid Ovation II).
3. Under seat woofers to SWS 8 - at this point I still don't know if I should get SWS 8x (4-ohm version) of SWS 8xi (2-ohm version).

I am NOT planning to add any sub in trunk or perform any further upgrades. The above upgrades include also acquiring the relevant harnesses/spacers/adapter rings for the amp/speakers/woofers.

Coming back to the list of questions I have:

Q1: Given the above setup which SWS would be better for the under seat woofers: SWS 8x or SWS 8xi ?
As a side note: on the multiple threads on this forum I still could not find a definitive answer. The woofers will have two dedicated channels from the JL XD 600/6. The Morels are 4 ohms if it matters to the woofers choice.
Q2: Any suggestions or lesson learned which I should take into consideration? Any issues you ran into while doing a similar upgrade as a DIY?

I appreciate your answers and advices!
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      11-05-2012, 04:27 PM   #2
kaigoss69
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Get the 2 ohm, that way you get about 100W per channel which is better than 75wpc. Ask yourself, will I be able to live with mediocre mid-bass, and so-so sub-bass (which is what you get with the SWS), or do I want good mid-bass, and the option to add a trunk sub later on, which is what you need to really get the bottom end filled in.
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      11-05-2012, 05:27 PM   #3
Barney Rubble
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the Jehnert under seat woofers may give you a better sound than the SWS, depends on your music style.
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      11-06-2012, 12:24 AM   #4
black335isport
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Quote:
Originally Posted by Barney Rubble View Post
the Jehnert under seat woofers may give you a better sound than the SWS, depends on your music style.
The more I read people's feedback the more I am tempted to get the Jehnerts (even with 150-200$ price difference)...

The main music style I listen to is pop music, but I do also listen to all kinds to a lesser degree.

Choices....choices...
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      11-24-2012, 03:36 PM   #5
starbai
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So how is your plan coming along? I too am planning a similar setup and starting from a similar place...
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      11-25-2012, 03:43 PM   #6
black335isport
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Quote:
Originally Posted by starbai View Post
So how is your plan coming along? I too am planning a similar setup and starting from a similar place...
I am still waiting for the Morels to be delivered - they are in transit and they should get here next week. I purchased the Jehnerts from Don from Unexpected Creations as Ken did not answer my email.

Most likely I will install everything next weekend.
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      11-25-2012, 03:50 PM   #7
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cool please keep us posted on your thoughts...
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