aybeesea

Is L7 the first audio system to step up an audio source's quality?

Mind you there are those who listen to MP3.



ABC

jaki

Are You sure?
Basically DolbyProlog system uses the "hidden" voices which are basically tunes whose phase is shifted. So that You cannot hear those in normal stereo environment = phase is 180 degree shifted so that they ignore each others.
What is delivered to the central speaker is mainly mono voices = same signal in both left and right speakers. Not because of its frequency range.
What is delivered rear speakers are those phase shifted signals.
Correct if I'm wrong.

About Logic 7:
I had a vehichle with Hifi Lautsprechersystem, Yes, it was a very good system. Then I sold it and bought similar car which I understood had a same system (I didn't notice that Hifi system professional as different).
I was suprised that specially the low end was better and generally the system deliver more pressure. Just to realize yesterday that it in deed it is a Logic 7... (if You adjust tone You see only bass & treble, but not equalizer at first sight.)

jaki

Those are "only" 210 mm = less than 10 inches. Those even look (if You open the cover) tiny with relatively small magnet. But the sound: vow!

btw: this is the first car audiosystem in my life that I cannot continuously keep at max not getting my years humming!

0700700

has anyone listened to the premium hi-fi in the new S class... with dvd-audio disks its bloody good

vern

When I first got my 5 I set up the Logic 7 and put it in Concert Hall mode and it realy sounded great then I got the MY2006 X3 with Premium Sound and it has qiute a few more settings than the Logic 7 and IMO it sounded much better. After fooling around with the Logic 7 to make it sound better I noticed that when I put it in Concert Hall a few days later it would go to the off position After taking it to the dealer,JMK,for service work they upgraded the CIP to 23.02.01 and the problem with it gong out of Concert Hall was solved and it sounds great..
cheers
vern

WebDefy

Is it just me or does the L7 sound awful from outside of the car? I'm not one of those window down look I can bass, but when I have the system on in full the whole outside of the car rattles like I have a cheap aftermarket system with no soundproofing. Does this have to do with the moving of the subs under the dash from under the seats. It gets embarassing and I turn it down whenever in traffic and stopped even though I like it loud with the windows up becasue I don't want to look like a trunk rattler. Seams to mainly be the front side fenders making noises.

subterFUSE

No. It is because the speakers are not well isolated from the outside. Basically, inside the door panel, the speakers are just playing in an infinite baffle setup.... so their sound is going inside the car just as well as outside.

When I installed custom stereos in my previous cars, we began by disassembling the entire interior of the cars. Then we applied layers of dynamat and sound dampening spray to all the metal surfaces. This reduces the rattles and pings which occur from metal resonating with the heavy bass. (You know, the ghetto license plate banging sound?) It prevents vibrations, essentially. Once that was done, we designed sealed enclosures for all of my speakers. This way, their sound would not be directed outside the car... but inside... and the speakers were well protected from the elements outside. (Often when you take off a door panel toa car, you will find that nothing is protecting the factory door speakers from the rain outside. Believe me, you would be shocked.


Our BMWs have not been well damped for audio. The primary reasons for this are: cost and weight. It obviously costs money to do this sort of treatment, and customers are not likely to give a rats ass about it... so why spend it? Secondly, sound dampening works by adding weight. Dynamat is basically just a thin layer of asphalt with glue on one side. So when you add a few rolls of the stuff, it adds a significant amount of weight. I'm sure BMW doesn't want to sacrifice adding weight for improved acoustics in their cars.

big_ipaq

Neither do I.