I consider myself a bit of an audiophile..over the course of the last few years I have built a combination HT and two channel dedicated system which has a failrly flat response. I finally had time to do a sweep of my Bose system in the 991 as I wanted to try to understand why the system was prone to rattleing and distortion. I located the microphone in the driver's listening position. All settings were left at zero with the dolby surround option off. The response is bass heavy, perhaps as expected for a car system. More interesting, ther individual frequency responses in the bass region show the excitation of higher frequencies as a result of rattling parts. This effect stops past 125 Hz. I believe the rattling is caused by the door panels. I will try to have the dealer fix this issue and report back.

 

I thought all Bose were biased base. I had a Bose in my 2009 and a base HD radio in my 991 and the base radio is better than my Bose IMHO.

ChuckJ

 

I have the bose its not great... but fair

 

good report.

 

I posted this in another area but this is what I experienced...

Audiophiles...?
I have been unable to hear the, "Base" system or a Burmeister that comes in the 911, and was wondering if anyone was actually able to compare the Base vs the Bose or can comment on the Base?

On the Bose, has anyone felt that when the base hits, the door speakers, especially when my leg in leaning on the door while in the driving position, seem to be mounted in a flexible part of the door panel? In all of my stereo system's, it has been explained to me that the entire speaker must not move and should be mounted solidly to a solid area. I felt that the entire speaker assembly, was flexing as the base would hit, minimizing the sound that should be coming from the speaker. I'm not sure if I'm explaining it well, but has anyone experienced this?

I'm asking because, I hope the Burmester is installed, "A Little differently..."

I hope you can find out what is actually going on with the Bose, but until then I figured I would just check off the Burmester Box...

 

I find the Bose in my Toyota 4 runner sounds much better
Than the Bose in my 991.

 

Buy Other Sound Equipment

 

For the audiophile the Burmester is the only way to go. However it is also set bass heavy which can be corrected. I have mixed feelings about Bose. I own several products which I enjoy, headphones mainly, but find most of their products lacking. Interesting post!

 

On another note - I am beginning to get the hang of this 7 speed manual. Wow it's the finest I have ever touched.

 

I am supposed to take it into dealer this morning for some updates and I am real close to dealership but feeling like driving on & rescheduling drop off later as in much later-

F

 

I had the "speaker rattle you describe with my Bose. It was the door panel plastic cover for air bag at front edge rattling against the door metal- simple dealer fix to adjust, but can recur. To my old too many rock concert ears the Bose the car came with is just fine- but the Burmeister is very obviously just finer.

 

Brought the car in yesterday. No rattling parts according to the dealer. Everything seems to be tight. They have ordered new tweeter from Germany. I have not had a chance to discuss this strategy with them as of yet..just an FYI. The speakers will take weeks to come in.
My measurements clearly show that the rattling occurs in the low frequency range, nothing to do with the tweeters. Regarding the Burmester package, I understand that the driver implementation strategy is similar to the Bose strategy, just higher quality speakers? Can someone confirm? If this is the case, the Burmester system should also be prone to rattling in the low frequency range?

 

You got that right!

The BOSE system was already installed in the car I fell in love with; I never would've ordered the BOSE.

Dr.Bose had made a reputation for himself during the seventies with his hiss-cancelling circuits for cassette player/recorders, and his reflecting speakers for home audio. The company has been living off that rep ever since. Spacial sound baby ... yeah, take another toke, dude.

 

I used to be an "audio guy" and I still am a classical music guy, so by default I'd tend towards Sennheiser. However, what I think I have learned over the years is that linear does not equal "good" for the purpose of listening pleasure. For mixing in a studio setting, you want to hear every detail (and imperfection!) of the sound source. But for listening, in particular when listening to a poor source (mp3, poor recording, etc.) or in a sub-optimal setting (i.e. the 991), give me all the drugs it takes.

If this is not too hand-wavey for you, this is what I do on my Bose (remember, for classical music):

1. Surround ON
2. Response LINEAR
3. Bass DOWN
4. Treble UP

and, most importantly, most of the time

5. Source AUX with nothing attached
6. PSE ON

 

Nice...but come on now, PSE gotta be off when listening to stereo...isn't it ?