Bmw E39 Oem Premium Sound Package on 2040-parts.com

All came out of a 2003 540i M-sport. Parts of the Premium Sound Package. Will sell separately for prices listed below or as a lot for $450. 

I also have the dashboard housing that the radio and cd player sit in complete with the wood trim for $100.

Factory installed, professionally removed OEM MID DSP radio display. With LIFETIME WARRANTY from German Audio Tech. $275.
Factory installed, professionally removed OEM Business CD player. $75.
Factory installed, professionally removed OEM BMW amplifier. $75.
Factory installed, professionally removed 1" dome tweeters (2). $25 each.
Factory installed, professionally removed 5-1/4" midbasses (4). $30 each.

**missing OEM 6-CD changer, both front 2" midranges, both 1-1/4" dome tweeters in the rear doors and both 5-1/4" subwoofers.

System was upgraded before I bought the car and the owner gave me the original parts in case I wanted the DSP feature or OEM system back in the car. Everything works perfect as far as I know.

Here's the factory info:
Super Premium Hi-Fi system ($1,200): This is the difference between an awesome hi-fi system and a radio. It includes 12 good speakers: two three-way tri-amplified speakers in front, two two-way bi-amplified speakers in the rear and two individually amplified rear subwoofers. It also includes digital sound processing, more power and better drivers than the standard radio. It sounds great!

The standard radio is fine for news and weather, especially in Germany where you turn off the music when you're driving. If you want to listen to music that sounds great then this option is for you. It also adds a silly echo chamber gimmick (DSP) I always leave turned off. BMW probably added the echo chamber because except for the "DSP" button on the radio there is no way to see that you got the premium sound. The difference is audibly obvious, especially in the bass, but otherwise the two look the same. You're paying for quality sound, not brand tie-in with Bose or Quad or JBL or whoever. There are no badges on the speaker grilles and no money wasted on brand awareness advertising.

There are three memory presets for DSP system settings. personally I can do without the echo chamber, whose size and regeneration level are programmable. THe clever use of the three memory positions for the DSP system is that they also each include memory settings for the multiband equalizer. Thus if you like to have different EQ settings you may recall them via the DSP memories.

The BMW premium hi-fi system has pleasantly neutral voicing, perfect for just about anything. It sounds great without any adjustment of the tone controls. The bass is solid and extended without the booming common to other brand premium systems designed to impress on a three-minute test drive. The BMW sounds great for hours; the more you listen the more you appreciate it's careful balance without all the boom. Each bass note is different and distinct; they don't all just resonate with the same monotonous boom that other systems do.

The antennas are all in the rear window along with the defroster elements . There is no power or whip antenna. This is great; there is no need to wait for a power antenna to crank up and down, and no power antenna to have to fix in 20 years.

The FM radio appears to employ two antennas and two tuners for a diversity reception system. This means that there really are two radios running at the same time. The system continuously always selects the strongest signal instant by instant, which means you don't get much problem from multipath reception. In the old days you may remember stopping the car at a light and just losing a weak signal, and having to inch forward or back to get back the signal. Not anymore; the 540i's system automatically picks the strongest signal from the two tuners so you'll never have an FM signal fading in and out.

The system has 12 discreet channels of amplification, one for each driver. It uses special equalization and active crossovers for each and every speaker driver. See also here, here, here and here. There are connections to dual voice coils in the subwoofers; I'm unsure if these are simply for more power at 12V or if they are negative feedback. If you're curious, reverse the connection to one of the two voice coils and see what happens: if you get no sound then they were just power, if it goes berserk and blows up it was distortion cancellation. Let me know. There also are dual coils in some of the other speakers used for the phone amnd Park Distance Control.

The system has reasonably low stored energy. This means it sounds clear and not muddied. Cheap systems use crappy drivers and sloppy insulation and enclosures and leave a lot of mutilated sound energy running around. This energy, which comes from the back of the speakers, winds up leaking out eventually and muddying up the direct sound. Some of this mung energy in crappy systems comes from sound energy bouncing around inside paper cones as well. The premium system uses good drivers and enclosure design so all you hear is the direct sound and not all the crud.

Front (all in the door):

1" dome tweeters
2" midranges
5-1/4" midbasses.
Crossovers at 1.25k and 8k. The front speakers aren't driven below 80 Hz.

Rear:

1-1/4" dome tweeters in the rear doors
5-1/4" midbasses in the back deck
5-1/4" subwoofers in plastic Nokia bandpass enclosure below the back deck.

Crossovers: The subwoofer is cut off at 12 dB/octave above 40 Hz presumably to prevent boominess due to the bandpass enclosure's gain, This is a very clever way to get great efficiency in the mid bass range with low distortion.