Logic 7 surround sound

graham999au · 07-02-2007, 03:07 AM

Hi all,

Anyone noticed with surround on that the volume changes randomly? I have tried MP3's, CD's and the radio and it happens at random on all of them.

msimon18 · 07-02-2007, 05:38 AM

Are you talking about the automatic SPEED VOLUME CONTROL feature ??? CHeck your manual.

graham999au · 07-02-2007, 06:27 AM

No, I have turned the speed dependent volume off. The volume randonly increases a small amount for about 5 secs then reverts back to the original volume.

stingq · 07-02-2007, 11:50 AM

I have the same problem. My speed dependent volume is all the way down as well. It is very annoying. The dealer told me they could not find anything wrong :mad:

Bimmer335i07 · 07-02-2007, 12:35 PM

Quote:

Originally Posted by graham999au

No, I have turned the speed dependent volume off. The volume randonly increases a small amount for about 5 secs then reverts back to the original volume.

You cannot turn off the SVC. You can only lower it to the minimum, which will still increase the volume of the music by a little when you increase your speed and decrease it when your speed is lowered.

stingq · 07-03-2007, 02:57 AM

when my speed dependent volume is all the way down, I still notice the sound going up and down even though I'm going the same speed. This happens when I'm driving slow and fast. Now, the my car just sounds bad all around, whether i'm play cd, radio or aux. Any sugguestions?

mrox · 07-03-2007, 07:38 AM

I have my car now 2 days and I noticed it too. Speed vol to zero. It is not even the sounds gets louder, but that certain frequencies (high tones) get louder but not the bass. This is even I am driving at the same speed, so speed vol should not kick in.
This is all MP3's have not tried real CD's that might not gave this problem.
Anyone having ideas, I am interested, because it is annoying.

graham999au · 07-03-2007, 09:09 PM

The problem seems to happen on MP3's, radio, and CD's...

AlpineM6GC · 12-16-2007, 03:27 PM

has anyone solved this problem??? I'm having the same issue.
Danny

graham999au · 12-17-2007, 12:07 AM

Nope, just complain to BMW as I have....

AlpineM6GC · 12-17-2007, 06:19 PM

Quote:

Originally Posted by graham999au

Nope, just complain to BMW as I have....

so you complained and they fixed it? what was the fix?
Danny

Tightness · 01-15-2008, 12:27 AM

Guys, I am desperate as well, dunno what to do, I have exact the same symptons, changes in Trebles and Bass without any change in driving speed, music source or whatsoever.

If ANYONE will have found out what the root cause, PLEASE post it!

audiphile · 01-24-2008, 08:45 AM

same issue. I just dropped the car off for the 1 year service, maybe I'll call to complain, but I doubt they'll be able to do anything.

marinadazza · 01-24-2008, 11:52 AM

Picked up an '08 e92 335 on Sunday and mine does it with the iPod playing. I think the chord in the center console is dodgy, so I am going to ask for a replacement. I haven't experienced the issue with the other modes yet.

I thought it might be the speed volume as well, because it kicks in at various speeds between 60 and 70 mph, but it isnt consistent. So if you are in traffic and up and down speeds, it sounds pitchy!

AlpineM6GC · 01-31-2008, 04:39 PM

anyone???

marinadazza · 02-03-2008, 07:49 PM

Got a new iPod cable and it definitely fixed the problem that I had noticed. I havent noticed it (other than the speed volume) since.

ILuvMy335i · 02-06-2008, 01:36 PM

Your Logic 7 system has processing that is similar to a 5.1 surround system in your home. What actually happens is that instead of having left-right stereo linke conventional sound systems, you also have back to front "stereo" effects. Those of you having the problem most likely have your fader set more biased to the back. Try setting your fader to 0 - worked for me.

Technic · 02-06-2008, 01:49 PM

... also, remember that Logic7 also has speed-dependent equalization in addition to volume. I don't think that this equalization can be manually adjusted.

JeezuzFr3ak · 01-05-2009, 04:25 PM

I have a brand new 09 335i xdrive, and it's happening to me with CDs. It has never happened with Satellite or FM radio as the Audio Source, and the CD's are not CD-R or CDRW format - these are CDs straight from the music company factories. Due to the heavy changes in spectrum and f/r balance (as noted above), I have the Logic7 surround feature turned off. I only use it occassionally when I feel like adding dimension to the sound, so this issue (for me) isn't related to the surround sound effects.

I'm quite certain this is a bug in the audio system, as it happens when I am sitting still with the engine turned off. The other day, I was sitting in the parking lot waiting for my wife, and the sound level kept going up and down randomly. Like others have noted, the volume changes for about 5 seconds and then goes back to normal. It's really irritating, because everyone thinks I'm messing with the volume control and it is very obvious to everyone in the car.

I still need to do some more tests to accurately define this problem, but in the meantime I wanted others to know that it's not their imagination!

Malek@MRF · 01-06-2009, 01:13 PM

refer to my Logic7 EQ thread. It address many issues, and this is one of them.

JeezuzFr3ak · 01-06-2009, 04:40 PM

I've read through the Logic 7 EQ sticky thread, but I'm having a sound amplitude issue across the whole frequency spectrum while not using any surround whatsoever (and not driving). Everything from the low bass to the highest highs are reducing in amplitude for approx 5 seconds, and then the amplitude fades back to the original level. I've also encountered the fading issues when the surround mode is used, but that's not what is happening here....that is much less extreme than what I'm encountering.

Some times, I listen to an entire CD and no problems occur, whereas other times the sound amplitude goes wild. I suspect I'm losing 2-3dB across the whole spectrum when this occurs, but I haven't caught the event on a decibel meter yet. With the recent holidays, time has been at a premium.

I've been building speakers for approx 20 years, and I have a strong engineering background, so I have a decent ear for what's going on. I haven't yet run a spectrum sweep inside the car using my laptop, but it looks like your recommended EQ settings are right on the money based on what my ears are telling me. Thanks for taking the time to post those results, and thanks for responding to my post.

wegl84 · 02-26-2009, 11:22 AM

Has anyone found a solution to this? It is not sound effects or the speed volume control. I have only noticed it on CD's.......but thats usually what I listen to. I changed the equalizer settings to what some on this board have said.

I thought maybe it was reading scratches on the CD's but it does it on brand new cd's also. It is so intermittent that it will be difficult to explain to a technician or "show" them.

My car only has 3000 miles on it so I have been waiting to see if I have any other issues before I take it in but except for a buzzy rear speaker thats it.

07-02-2007, 03:07 AM	#1
graham999au Private First Class 17 Rep 161 Posts Drives: E92 335i Coupe Join Date: Nov 2006 Location: Australia iTrader: (0)	Logic 7 surround sound - random volume changes Hi all, Anyone noticed with surround on that the volume changes randomly? I have tried MP3's, CD's and the radio and it happens at random on all of them. __________________ __________________________________________________ __________________________________________________ __________________________ 2011 E92 335i M Sport Coupe/DCT/Black Sapphire/Oyster/Bamboo Grain/Sunroof/OEM Performance Exhaust/Individual Audio/Heated Seats/TV/Folding Mirrors/6FL iPod/6NF Extended Connectivity/Internet/ACS Roof spoiler/ACS Aluminium Peddles
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07-02-2007, 05:38 AM	#2
msimon18 Retired 19 Rep 868 Posts Drives: Z4 s30i Join Date: Mar 2007 Location: The Villages, FL iTrader: (0) Garage List 1965 Isetta 300 [0.00] 2004 1/5 Scale M3 GTR [10.00]	Are you talking about the automatic SPEED VOLUME CONTROL feature ??? CHeck your manual. __________________ M3 GTR - 1/5 scale - 4.2 HP w/ Collari hydraulic brakes - would you believe ~80 MPH on straightaway !!
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07-02-2007, 06:27 AM	#3
graham999au Private First Class 17 Rep 161 Posts Drives: E92 335i Coupe Join Date: Nov 2006 Location: Australia iTrader: (0)	No, I have turned the speed dependent volume off. The volume randonly increases a small amount for about 5 secs then reverts back to the original volume. __________________ __________________________________________________ __________________________________________________ __________________________ 2011 E92 335i M Sport Coupe/DCT/Black Sapphire/Oyster/Bamboo Grain/Sunroof/OEM Performance Exhaust/Individual Audio/Heated Seats/TV/Folding Mirrors/6FL iPod/6NF Extended Connectivity/Internet/ACS Roof spoiler/ACS Aluminium Peddles
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07-02-2007, 11:50 AM	#4
stingq New Member 0 Rep 11 Posts Drives: GS350 Join Date: May 2007 Location: San Jose iTrader: (0)	I have the same problem. My speed dependent volume is all the way down as well. It is very annoying. The dealer told me they could not find anything wrong :mad:
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07-03-2007, 02:57 AM	#6
stingq New Member 0 Rep 11 Posts Drives: GS350 Join Date: May 2007 Location: San Jose iTrader: (0)	when my speed dependent volume is all the way down, I still notice the sound going up and down even though I'm going the same speed. This happens when I'm driving slow and fast. Now, the my car just sounds bad all around, whether i'm play cd, radio or aux. Any sugguestions?
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07-03-2007, 07:38 AM	#7
mrox Registered 0 Rep 3 Posts Drives: E93 + N54 Join Date: Jan 2007 Location: NL iTrader: (0)	I have my car now 2 days and I noticed it too. Speed vol to zero. It is not even the sounds gets louder, but that certain frequencies (high tones) get louder but not the bass. This is even I am driving at the same speed, so speed vol should not kick in. This is all MP3's have not tried real CD's that might not gave this problem. Anyone having ideas, I am interested, because it is annoying.
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07-03-2007, 09:09 PM	#8
graham999au Private First Class 17 Rep 161 Posts Drives: E92 335i Coupe Join Date: Nov 2006 Location: Australia iTrader: (0)	The problem seems to happen on MP3's, radio, and CD's... __________________ __________________________________________________ __________________________________________________ __________________________ 2011 E92 335i M Sport Coupe/DCT/Black Sapphire/Oyster/Bamboo Grain/Sunroof/OEM Performance Exhaust/Individual Audio/Heated Seats/TV/Folding Mirrors/6FL iPod/6NF Extended Connectivity/Internet/ACS Roof spoiler/ACS Aluminium Peddles
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12-16-2007, 03:27 PM	#9
AlpineM6GC Private First Class 11 Rep 155 Posts Drives: 2015 M6 GC 2024 X5 50e Join Date: Jul 2007 Location: Atlanta, GA iTrader: (1)	has anyone solved this problem??? I'm having the same issue. Danny
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12-17-2007, 12:07 AM	#10
graham999au Private First Class 17 Rep 161 Posts Drives: E92 335i Coupe Join Date: Nov 2006 Location: Australia iTrader: (0)	Nope, just complain to BMW as I have.... __________________ __________________________________________________ __________________________________________________ __________________________ 2011 E92 335i M Sport Coupe/DCT/Black Sapphire/Oyster/Bamboo Grain/Sunroof/OEM Performance Exhaust/Individual Audio/Heated Seats/TV/Folding Mirrors/6FL iPod/6NF Extended Connectivity/Internet/ACS Roof spoiler/ACS Aluminium Peddles
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01-15-2008, 12:27 AM	#12
Tightness Registered 0 Rep 1 Posts Drives: E93 M-Kit Join Date: Jan 2008 Location: Dubai iTrader: (0)	Guys, I am desperate as well, dunno what to do, I have exact the same symptons, changes in Trebles and Bass without any change in driving speed, music source or whatsoever. If ANYONE will have found out what the root cause, PLEASE post it!
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01-24-2008, 08:45 AM	#13
audiphile Private First Class 7 Rep 169 Posts Drives: CORRADO SLC, 07 335i Join Date: Jan 2007 Location: NYC iTrader: (0)	same issue. I just dropped the car off for the 1 year service, maybe I'll call to complain, but I doubt they'll be able to do anything.
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01-24-2008, 11:52 AM	#14
marinadazza Mod Virgin 8 Rep 62 Posts Drives: e92 335 & e60 530i Join Date: Jan 2008 Location: Norcal iTrader: (0)	Picked up an '08 e92 335 on Sunday and mine does it with the iPod playing. I think the chord in the center console is dodgy, so I am going to ask for a replacement. I haven't experienced the issue with the other modes yet. I thought it might be the speed volume as well, because it kicks in at various speeds between 60 and 70 mph, but it isnt consistent. So if you are in traffic and up and down speeds, it sounds pitchy!
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01-31-2008, 04:39 PM	#15
AlpineM6GC Private First Class 11 Rep 155 Posts Drives: 2015 M6 GC 2024 X5 50e Join Date: Jul 2007 Location: Atlanta, GA iTrader: (1)	anyone???
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02-03-2008, 07:49 PM	#16
marinadazza Mod Virgin 8 Rep 62 Posts Drives: e92 335 & e60 530i Join Date: Jan 2008 Location: Norcal iTrader: (0)	Got a new iPod cable and it definitely fixed the problem that I had noticed. I havent noticed it (other than the speed volume) since. __________________ - - - '08 e92 335 - Sparkling Graphite, Black/Gray Wood, 6MT, Options: Every one I could afford + M Shift Knob & M eBrake, Smoke reflectors, F1 Tint 35%, CF license frame, CF Roundel overlays (on wheels), Aluminium pedals, Machined Aluminium Air Con. Dials - - -
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02-06-2008, 01:36 PM	#17
ILuvMy335i Enlisted Member 5 Rep 44 Posts Drives: 2011 X3 3.0d Msport Join Date: Feb 2008 Location: Johannesburg, South Africa iTrader: (0)	Your Logic 7 system has processing that is similar to a 5.1 surround system in your home. What actually happens is that instead of having left-right stereo linke conventional sound systems, you also have back to front "stereo" effects. Those of you having the problem most likely have your fader set more biased to the back. Try setting your fader to 0 - worked for me.
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02-06-2008, 01:49 PM	#18
Technic Lieutenant General 2288 Rep 13,001 Posts Drives: 2021 i3S, 2024 i4 M50 Join Date: Apr 2005 Location: Florida iTrader: (18)	... also, remember that Logic7 also has speed-dependent equalization in addition to volume. I don't think that this equalization can be manually adjusted.
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01-05-2009, 04:25 PM	#19
JeezuzFr3ak Newer Member 2 Rep 36 Posts Drives: '17 M240i xDrive Join Date: Jan 2009 Location: Saint Louis, MO iTrader: (1)	I have a brand new 09 335i xdrive, and it's happening to me with CDs. It has never happened with Satellite or FM radio as the Audio Source, and the CD's are not CD-R or CDRW format - these are CDs straight from the music company factories. Due to the heavy changes in spectrum and f/r balance (as noted above), I have the Logic7 surround feature turned off. I only use it occassionally when I feel like adding dimension to the sound, so this issue (for me) isn't related to the surround sound effects. I'm quite certain this is a bug in the audio system, as it happens when I am sitting still with the engine turned off. The other day, I was sitting in the parking lot waiting for my wife, and the sound level kept going up and down randomly. Like others have noted, the volume changes for about 5 seconds and then goes back to normal. It's really irritating, because everyone thinks I'm messing with the volume control and it is very obvious to everyone in the car. I still need to do some more tests to accurately define this problem, but in the meantime I wanted others to know that it's not their imagination!
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01-06-2009, 01:13 PM	#20
Malek@MRF Brigadier General 731 Rep 3,735 Posts Drives: E92 M3, E46 M3, G82 M4 Join Date: Jan 2008 Location: Irvine, California iTrader: (5)	refer to my Logic7 EQ thread. It address many issues, and this is one of them. __________________ BMW PERFORMANCE SPECIALISTS. Race Engines. Suspension. F/I. Brakes. Race Preparation. Factory Service. Alignments. OFFICIAL PARTNERS: KW. MOTON. Brembo. AP Racing. BBS Motorsport. iND. HRE. Turner Motorsport. VAC. BMW Motorsport. Facebook \| Instagram \| Yelp! \| Flikr Phone: 949-233-0448 \| E-Mail: info@mrfengineering.com
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01-06-2009, 04:40 PM	#21
JeezuzFr3ak Newer Member 2 Rep 36 Posts Drives: '17 M240i xDrive Join Date: Jan 2009 Location: Saint Louis, MO iTrader: (1)	I've read through the Logic 7 EQ sticky thread, but I'm having a sound amplitude issue across the whole frequency spectrum while not using any surround whatsoever (and not driving). Everything from the low bass to the highest highs are reducing in amplitude for approx 5 seconds, and then the amplitude fades back to the original level. I've also encountered the fading issues when the surround mode is used, but that's not what is happening here....that is much less extreme than what I'm encountering. Some times, I listen to an entire CD and no problems occur, whereas other times the sound amplitude goes wild. I suspect I'm losing 2-3dB across the whole spectrum when this occurs, but I haven't caught the event on a decibel meter yet. With the recent holidays, time has been at a premium. I've been building speakers for approx 20 years, and I have a strong engineering background, so I have a decent ear for what's going on. I haven't yet run a spectrum sweep inside the car using my laptop, but it looks like your recommended EQ settings are right on the money based on what my ears are telling me. Thanks for taking the time to post those results, and thanks for responding to my post.
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02-26-2009, 11:22 AM	#22
wegl84 New Member 1 Rep 7 Posts Drives: 2009 BMW 335i Sedan Join Date: Aug 2008 Location: richmond, va iTrader: (0)	same problem with Logic 7 Has anyone found a solution to this? It is not sound effects or the speed volume control. I have only noticed it on CD's.......but thats usually what I listen to. I changed the equalizer settings to what some on this board have said. I thought maybe it was reading scratches on the CD's but it does it on brand new cd's also. It is so intermittent that it will be difficult to explain to a technician or "show" them. My car only has 3000 miles on it so I have been waiting to see if I have any other issues before I take it in but except for a buzzy rear speaker thats it.
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