BMW 3-Series (E90 E92) Forum - View Single Post - Notes on a 2007 E90 328i with HiFi (10-speakers/OEM amp) install

Technic · 05-18-2011, 04:52 AM

Customer wanted a relatively budget system with full OEM integration, more focused front soundstage and a significant bass output increase.

Thus:

- JBL MS-8
- XD400/4
- DLS R4 component set (front)
- Vibe Slick 4" (center)
- VP Electricity trunk sub enclosure with ID10

Very quick notes:

- Custom MS-8 to HiFi OEM connector harness was created for full integration. Rear OEM speakers were retained. DLS R4 were installed in the front doors using the Dynamat method explained in this thread: http://www.e90post.com/forums/showthread.php?t=518402. Vibe Slick 4 was used as the center speaker: http://www.e90post.com/forums/showthread.php?t=477443

Result:

-Again, a relatively simple upgrade on the money that delivers a more satisfying, clearer, higher volume, bassy sound than any of the optional OEM systems. From radio stations to iPod the SQ increase is instantly noticiable. You know that the MS-8 is doing its job of focusing the front stage to the driver when customers start simply smiling and nodding their heads to the beat of the music, just after calibration.

VP Electricity sub enclosure impresses just by installing it above the battery even before connecting it to the amp. The integration is simply OEM... and then it is connected to the system. The ID10 sub bass is clean, heard and felt in the cabin without any rattles -or that nasty flappiness of some subs that take some work and tuning to make it right-, seemlessly blending with the underseat woofers midbass.

By dedicating the OEM woofers to just midbass above 60Hz and providing 5 times their OEM power their bass impact is to the level of a much, much nicer aftermarket shallow woofer. Definitely their 2ohms reting and their sensitivity (they also sound great with just the MS-8 power) make these woofers very power efficient and great midbass drivers.

The combination of the R4 and the Slick 4 in the front provides a much improved front stage over the OEM speakers. The OEM speakers actually sound much better when powered by the MS-8 -this is the best part of the upgrade, as customers are shown how the OEM speakers sound with the MS-8 first and then with the R4 replacing them. The improvement is a much nicer, cleaner and clearer sounding front stage with the R4, both in midbass and high response (the silk tweeters are nicer by much over the OEM). The Slick 4 does not disappoint as a center speaker for its price, however it sounds better when the front stage have the same load (4ohms center and front speakers) than with the OEM speakers (2ohms). The MS-8 power is double for the 2ohm loads and it can be felt thru the center speaker (lower volume, but can be adjusted).

And as always... a 100% reversible install.

05-18-2011, 04:52 AM	#1
Technic Lieutenant General 2295 Rep 13,001 Posts Drives: 2021 i3S, 2024 i4 M50 Join Date: Apr 2005 Location: Florida iTrader: (18)	Notes on a 2007 E90 328i with HiFi (10-speakers/OEM amp) install Customer wanted a relatively budget system with full OEM integration, more focused front soundstage and a significant bass output increase. Thus: - JBL MS-8 - XD400/4 - DLS R4 component set (front) - Vibe Slick 4" (center) - VP Electricity trunk sub enclosure with ID10 Very quick notes: - Custom MS-8 to HiFi OEM connector harness was created for full integration. Rear OEM speakers were retained. DLS R4 were installed in the front doors using the Dynamat method explained in this thread: http://www.e90post.com/forums/showthread.php?t=518402. Vibe Slick 4 was used as the center speaker: http://www.e90post.com/forums/showthread.php?t=477443 Result: -Again, a relatively simple upgrade on the money that delivers a more satisfying, clearer, higher volume, bassy sound than any of the optional OEM systems. From radio stations to iPod the SQ increase is instantly noticiable. You know that the MS-8 is doing its job of focusing the front stage to the driver when customers start simply smiling and nodding their heads to the beat of the music, just after calibration. VP Electricity sub enclosure impresses just by installing it above the battery even before connecting it to the amp. The integration is simply OEM... and then it is connected to the system. The ID10 sub bass is clean, heard and felt in the cabin without any rattles -or that nasty flappiness of some subs that take some work and tuning to make it right-, seemlessly blending with the underseat woofers midbass. By dedicating the OEM woofers to just midbass above 60Hz and providing 5 times their OEM power their bass impact is to the level of a much, much nicer aftermarket shallow woofer. Definitely their 2ohms reting and their sensitivity (they also sound great with just the MS-8 power) make these woofers very power efficient and great midbass drivers. The combination of the R4 and the Slick 4 in the front provides a much improved front stage over the OEM speakers. The OEM speakers actually sound much better when powered by the MS-8 -this is the best part of the upgrade, as customers are shown how the OEM speakers sound with the MS-8 first and then with the R4 replacing them. The improvement is a much nicer, cleaner and clearer sounding front stage with the R4, both in midbass and high response (the silk tweeters are nicer by much over the OEM). The Slick 4 does not disappoint as a center speaker for its price, however it sounds better when the front stage have the same load (4ohms center and front speakers) than with the OEM speakers (2ohms). The MS-8 power is double for the 2ohm loads and it can be felt thru the center speaker (lower volume, but can be adjusted). And as always... a 100% reversible install. Last edited by Technic; 10-08-2011 at 07:21 AM..
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