DSP levels
 

How do you adjust the subwoofer level (and cutover FRQ eventually)?

I have 2006 X5, NAV and DSP

Thanks !

Allright, I have received a reply pointing to some company in Oregon that opened somebody's car and looked and made all sorts of outside measurements. Now, I have been in the computer business for more than 25 years and audio/video was my hobby for a lot longer than that.

This DSP amplifier is a device that has some analog and digital inputs and some analog outputs !! Since this is DSP (digital signal processing) the analog signals are coverted into digital (most likely 48Khz pcm) and that is where all the processing happens. Now the output is analog let's say just because the output device (the Speaker) is an analog device and its parameters vary no matter how accurate the manufacturing process is. The most important parameter that needs to be controlled is the SOUND LEVEL. Therefore the 9 or 10 or 11 speakers (including the subwoofers) must have individual control level most likely by going into a service menu or through a computerized interface.

I hope it is just a service menu so once again does anybody know how to get into the DSP service menu ?

In the 2005 X5 we worked on I didn't see either of those adjustments.

The 2005 low pass xover point was 80, and the highpass to the f doors was 50. The woofers in the back had a resonant freq of 80 so I don't think they played that much.

http://www.xoutpost.com/stereo-system...io-system.html