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E90/E92/E93 M3 (2008 - 2014)
4th generation E90 M3 sedan, E92 M3 coupe and E93 M3 convertible. The last of the naturally aspirated M3s, powered by a 4.0 liter V8 making 414hp and 295 lb-ft of torque.

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  #1  
Old 01-06-2010, 11:45 AM
chaos888 chaos888 is offline
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Enhanced Premium Sound Amplifier Gain

Picked up an '09 sedan before Christmas with Enhanced Premium Sound. The system, as far as stock systems go, is decent - not the worst, not the best. Better than the HK in my e46 M3 which I almost never listened to.

I've been trying to get the audio settings (treble, bass and equalizer) to my liking and it's been a house of cards. I get the lows sounding okay and then when I get the mids and highs sounding good the lows are off again.

I sort of managed to get it all sounding good and then I realize it's only good for the volume that I set it at. At low volumes there's too much bass, not enough mids/highs. As I raise the volume I find the sweet spot where I tuned it and as I go higher, the bass becomes thin and the mids/highs begin to really dominate.

I've never heard an audio system do this before.

A friend of mine who used to install car stereos thinks it might be an amplifier gain issue. I didn't think we could make those types of adjustments in the past. Do we have access to that on the current amp?

Anyone else experience this?
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  #2  
Old 01-07-2010, 02:56 AM
Jim in Oregon Jim in Oregon is offline
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You might send this guy a personal message on the below forum. He is an engineer and has mastered the performance of the Premium sound. He goes by PencilGeek.
http://www.m3forum.net/m3forum/showt...ht=pencil+geek
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  #3  
Old 01-07-2010, 08:10 AM
chaos888 chaos888 is offline
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Thanks! I'll do that.
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  #4  
Old 01-07-2010, 02:34 PM
chaos888 chaos888 is offline
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Got a response back from PencilGeek. His settings actually helped quite a bit. I'm also getting much more linear response throughout the volume range. I didn't get too much time to tweak it to my preferences but I think it's a good start. Still lacking in the mid-bass.

This is the thread you're looking for:
http://www.m3post.com/forums/showthread.php?t=137825

Specifically, this is the post you're looking for:
http://www.m3post.com/forums/showpos...9&postcount=35


PencilGeek's settings for a "flat" frequency response (as flat as possible):
EQ Settings:
100 Hz: +0
200 Hz: +1
500 Hz: +5
1000 Hz: +3
2000 Hz: +8
5000 Hz: +5
10000 Hz: +5

Treble: 0
Bass: +3

Front/Rear Balance: Rear: +3

My Modifications (so far):
100 Hz: +7 (not sure this is quite right yet - might be getting a little boomy)
200 Hz: +2
Front/Rear Balance: Rear: 0

I wanted to enhance the mid-bass. I also found that biasing the rears took away from the low-end so set it back to default.
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  #5  
Old 01-19-2010, 09:39 PM
chaos888 chaos888 is offline
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UPDATE: Current Settings

It's been a couple weeks and the system is sounding better and smoother. At times it's enjoyable to listen to. I guess the speakers needed some time to break-in.

My current settings

EQ Settings:
100 Hz: +4
200 Hz: +1
500 Hz: +4
1000 Hz: +5
2000 Hz: +8
5000 Hz: +5
10000 Hz: +5

Treble: +1
Bass: +5

Front/Rear Balance: 0
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  #6  
Old 01-30-2010, 11:47 PM
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Is the enhanced premium sound system the same as Logic 7 on the 335i? or is it an enhancement to logic 7?
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  #7  
Old 01-31-2010, 04:51 AM
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Quote:
Originally Posted by TGray5 View Post
Is the enhanced premium sound system the same as Logic 7 on the 335i? or is it an enhancement to logic 7?
Here you go...
Attached Files
File Type: pdf Individual Audio.pdf (772.6 KB, 1602 views)
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  #8  
Old 02-02-2010, 03:49 PM
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Originally Posted by Technic View Post
Here you go...
Thanks for this. I'm still not clear though, does the M3 come standard with Logic 7 sound and this is over and above that or does M3 come with the base sound system and this is the only upgrade available? Thanks.
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  #9  
Old 02-02-2010, 05:53 PM
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AZ-BMW AZ-BMW is offline
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Quote:
Originally Posted by TGray5 View Post
I'm still not clear though, does the M3 come standard with Logic 7 sound and this is over and above that or does M3 come with the base sound system and this is the only upgrade available?
M3, at least in MY 2009, did not come with the Logic7 as the base system. If it did, I would have not upgraded to the 752 enhanced audio sound system (ie, had Logic7 in my 335i and was very satisfied with it's performance). I understand the base M3 audio system is a dog
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Last edited by AZ-BMW; 02-02-2010 at 05:55 PM.
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  #10  
Old 02-02-2010, 07:12 PM
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Originally Posted by TGray5 View Post
Thanks for this. I'm still not clear though, does the M3 come standard with Logic 7 sound and this is over and above that or does M3 come with the base sound system and this is the only upgrade available? Thanks.
Enhanced > Logic7

The M3 has the HiFi system standard, Individual Audio (Enhanced) optional. No Logic7 in the USA is offered.
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  #11  
Old 02-02-2010, 09:17 PM
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Originally Posted by Technic View Post
Enhanced > Logic7

The M3 has the HiFi system standard, Individual Audio (Enhanced) optional. No Logic7 in the USA is offered.
OK, I think I got it now...the standard M3 system is hifi professional which is better than base audio in a regular e90 and similar to Logic 7 except maybe no surround modes, but the enhanced audio is a step above Logic 7. The standard hifi audio still has the subs under the front seats, right? Thanks.

How do you guys like the enhanced audio? is it worth it?
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  #12  
Old 02-04-2010, 04:44 PM
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Quote:
Originally Posted by TGray5 View Post
OK, I think I got it now...the standard M3 system is hifi professional which is better than base audio in a regular e90 and similar to Logic 7 except maybe no surround modes, but the enhanced audio is a step above Logic 7. The standard hifi audio still has the subs under the front seats, right? Thanks.
How do you guys like the enhanced audio? is it worth it?
I have an E93, so no subs under the front seats and a fewer number of interior speakers. As mentioned earlier, I think enh audio (752) was pricey, but had to buy it or get stuck with less acceptable the base system. It sounds great using an iPod for the music source
Note: I think if BMW offered Logic7 in the M3, they'd sell a lot fewer enh audio systems
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  #13  
Old 02-05-2010, 02:13 AM
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Quote:
Originally Posted by TGray5 View Post
OK, I think I got it now...the standard M3 system is hifi professional which is better than base audio in a regular e90 and similar to Logic 7 except maybe no surround modes, but the enhanced audio is a step above Logic 7. The standard hifi audio still has the subs under the front seats, right? Thanks.

How do you guys like the enhanced audio? is it worth it?
Having just traded a Logic7 335i for a 2010 M3 with enhanced audio(EA), I can tell you conclusively that Logic7 is MUCH better than EA, in every way. Everyone including the dealer techs tell me the base stereo on 2010 models is almost an embarrassing effort compared to EA. Apparently BMW really cheaped-out on the base stereo on all 2010 cars. A lot of people are complaining about it.

So, if the base stereo is another whole step down from EA, and IMHO EA is a step down from Logic7, we don't have a great option for the M3. The exhausts and engine make a great noise though.

Could I live with the base stereo instead of the EA that I have, I don't know. I do not feel like I got $1,900 worth of stereo "bang for the buck", especially considering they kept the base stereo value as well. I really feel BMW is taking advantage of their customers in this area. But if the base stereo is that much worse ......, what do you do?
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  #14  
Old 02-06-2010, 06:55 PM
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Quote:
Originally Posted by TGray5 View Post
OK, I think I got it now...the standard M3 system is hifi professional which is better than base audio in a regular e90 and similar to Logic 7 except maybe no surround modes, but the enhanced audio is a step above Logic 7. The standard hifi audio still has the subs under the front seats, right? Thanks.

How do you guys like the enhanced audio? is it worth it?
Not quite correct...

- HiFi system is just an analog 180W amp driving 10 speakers.
- Professional is all the 3-Series OEM HU and iDrive units, not the OEM amp.
- Top HiFi is a digital 420W amp driving 13 speakers (11 speakers in the E93). Logic7 is actually the DSP processing in that Top HiFi amp.
- Enhanced Premium/Individual Audio is a digital 825W amp driving 16 speakers. DIRAC is the procesing used in that OEM amp.

My M3 has the Enhanced Premium Audio, and I did not like it at all. Muddy vocals, muffled bass, but it sounds better at very high volume. Weird. So I recoded my iDrive to output analog differential (the iDrive outputs of the HiFi system) and installed aftermarket processor, amps and front, underseat woofer/speakers and a trunk sub. Night and day difference.
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  #15  
Old 02-06-2010, 06:56 PM
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Quote:
Originally Posted by AZ-BMW View Post
I have an E93, so no subs under the front seats and a fewer number of interior speakers. As mentioned earlier, I think enh audio (752) was pricey, but had to buy it or get stuck with less acceptable the base system. It sounds great using an iPod for the music source
Note: I think if BMW offered Logic7 in the M3, they'd sell a lot fewer enh audio systems
All M3 do have "subs" (they are really woofers) under the seats regardless of the sound system. What the E93 is missing is rear deck mid drivers.
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  #16  
Old 02-06-2010, 07:01 PM
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Originally Posted by dwaynemosley View Post
Having just traded a Logic7 335i for a 2010 M3 with enhanced audio(EA), I can tell you conclusively that Logic7 is MUCH better than EA, in every way. Everyone including the dealer techs tell me the base stereo on 2010 models is almost an embarrassing effort compared to EA. Apparently BMW really cheaped-out on the base stereo on all 2010 cars. A lot of people are complaining about it.

So, if the base stereo is another whole step down from EA, and IMHO EA is a step down from Logic7, we don't have a great option for the M3. The exhausts and engine make a great noise though.

Could I live with the base stereo instead of the EA that I have, I don't know. I do not feel like I got $1,900 worth of stereo "bang for the buck", especially considering they kept the base stereo value as well. I really feel BMW is taking advantage of their customers in this area. But if the base stereo is that much worse ......, what do you do?
The M3 continue to have the HiFi system standard for MY2011. Only the MY2010-on 3-Series have the Stereo (that's BMW's name, I'm not making it up) system (6 speakers, no trunk OEM amp, 15W x 4 Professional OEM HU/25W x 4 CIC iDrive).
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  #17  
Old 02-06-2010, 09:25 PM
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The M3 continue to have the HiFi system standard for MY2011. Only the MY2010-on 3-Series have the Stereo (that's BMW's name, I'm not making it up) system (6 speakers, no trunk OEM amp, 15W x 4 Professional OEM HU/25W x 4 CIC iDrive).
Uggh, so if I get an M3 I need to spend $1,900 for enhanced audio and it will sound worse than the included L7 system that came on my e92? If I don't get the EA, then the sound will really suck? Are there any good aftermarket upgrades to the standard hi-fi system?
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Old 02-06-2010, 10:37 PM
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I've been meaning to do a follow up since my initial post. I feel like I was too harsh about the system initially - before the speakers broke in. I'm assuming it was because the speakers needed break-in. I can't think of any other reason why the system sounded the way it did when I first got the car (varying frequency response depending on listening volume) versus now (smooth and equal response throughout volume range). I've never heard what Logic 7 is capable of so I can't compare. I did have the HK system in my e46 M3 and I thought it was pretty mediocre. I drove with my stereo off almost all the time because it was so disappointing. I had the car for 7 1/2 years and my drive to work is about 45min one way!

About Logic 7 vs. Enhanced Premium Sound, I've heard everything from it's worse to it's better. That simply can't be. What I get out of people's responses is that EA is better than Logic 7 but at twice the cost it's not twice as good. I can say that EA sounds pretty good when I compare it to the reference setup of my 7.2 home theater. I wish vocals were cleaner and more open but are by no means bad. The bass could be fuller and go lower for my taste but again it's pretty good. It's deep, tight and punchy. I just don't believe it goes down to 18Hz like BMW says - feels more like 30Hz.
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Old 02-07-2010, 06:21 AM
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Quote:
Originally Posted by TGray5 View Post
Uggh, so if I get an M3 I need to spend $1,900 for enhanced audio and it will sound worse than the included L7 system that came on my e92? If I don't get the EA, then the sound will really suck? Are there any good aftermarket upgrades to the standard hi-fi system?
Sound in a car is a matter of personal taste. If you are used to the tight "boom" but clear vocals and highs sound then, yes, it will suck. But the same can be said about all BMW sound systems, including the Individual Audio. And most of the people with those systems are very satisfied with them as is.

The fundamental problem is not the OEM speakers, although they could be better in the HiFi system. The problem is the OEM amp in all the systems as that's where the processing and filtering are done. And the processing and filtering are the problem.

For the HiFi the replacement of the OEM amp with aftermarket is the best "bang for the buck" to upgrade the system, as you will replacing that OEM processing and filtering in one sweep. A nicer 6-channel, balanced inputs compatible aftermarket amp will make that HiFi to sound great, even with the OEM speakers and without major installation costs and effort. For example, the upcoming new JL Audio XD600/6 (March) will be a great replacement for the HiFi OEM amp, as it is small enough to fit in the area of the OEM amp and the CD Changer trunk trim while leaving your trunk space OEM, and powerful enough to drive all your OEM speakers with more clarity and "punch".

Any other upgrades (new speakers, processor) can be added to that amp, but for something quick and easy that's a great choice.
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Old 02-07-2010, 12:40 PM
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Lots of good information here guys thanks! I'm not an audiophile and don't listen to music really loud and I am happy with the Logic7 in my e92 but was just concerned with some of the reports I've been hearing. It sounds like the bottom line is I at last need the Hi-Fi and if I'm not happy with that then I can replace the amp.

By the way, is the enhanced audio option distinguished visually by speakers with a silver trim ring around them? I've noticed some M3s speakers are that way and others are black. The grille of these silver trimmed speakers is also more transparent.
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Old 02-07-2010, 07:34 PM
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Originally Posted by TGray5 View Post
By the way, is the enhanced audio option distinguished visually by speakers with a silver trim ring around them? I've noticed some M3s speakers are that way and others are black. The grille of these silver trimmed speakers is also more transparent.
Yes
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  #22  
Old 02-18-2010, 04:06 PM
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Originally Posted by Technic View Post
Sound in a car is a matter of personal taste. If you are used to the tight "boom" but clear vocals and highs sound then, yes, it will suck. But the same can be said about all BMW sound systems, including the Individual Audio. And most of the people with those systems are very satisfied with them as is.

The fundamental problem is not the OEM speakers, although they could be better in the HiFi system. The problem is the OEM amp in all the systems as that's where the processing and filtering are done. And the processing and filtering are the problem.

For the HiFi the replacement of the OEM amp with aftermarket is the best "bang for the buck" to upgrade the system, as you will replacing that OEM processing and filtering in one sweep. A nicer 6-channel, balanced inputs compatible aftermarket amp will make that HiFi to sound great, even with the OEM speakers and without major installation costs and effort. For example, the upcoming new JL Audio XD600/6 (March) will be a great replacement for the HiFi OEM amp, as it is small enough to fit in the area of the OEM amp and the CD Changer trunk trim while leaving your trunk space OEM, and powerful enough to drive all your OEM speakers with more clarity and "punch".

Any other upgrades (new speakers, processor) can be added to that amp, but for something quick and easy that's a great choice.
Thanks for the info. How much would an Amp like that cost? Any idea how it would sound compared to the Enhanced Audio Option?
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Old 02-19-2010, 10:10 AM
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Thanks for the info. How much would an Amp like that cost? Any idea how it would sound compared to the Enhanced Audio Option?
If I were you, I would go to the dealer lot with a CD of your choice and compare your car with an M3 with premium sound side by side. It sounds like you have a better ear for the differences than most...especially me. I mostly listen to the sound of that revving V8. If I am actually listening to the stereo, it's usually some sort of rock or techno cranked up such that an equalizer doesn't really matter. I do have the EA and I can attest that it does get loud and the bass kicks pretty good.
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Old 02-19-2010, 11:43 AM
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The 2011's get a Harmon Kardon Sound system, Keep that in mind.
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Old 02-19-2010, 11:47 AM
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The 2011's get a Harmon Kardon Sound system, Keep that in mind.
Oh, they do? Are you sure that applies to the M3? I know on the non M 3 series Harmon Kardon is replacing Logic7 as an option, but it is standard equipment on the M3? Do you have a link to more information on this?

edit: Just checked the 2011 ordering guide and there is no mention of Harmon Kardon system for the m3. M3 comes standard with Radio Professional and Hi-Fi Audio with the enhanced audio as an option. 335's come standard with just BMW professional radio and no hi-fi with Harmon Kardon as an option.
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