2011 Z4 30i Premium hi-fi system specs?

[SupremeArt]

Anyone know the actual specs of the Premium Hi-Fi Audio that comes with the Premium Audio package for a 2011 30i? Curious just to know wattage, how many speakers, etc....

[Memphis1]

Radio BMW Professional for the BMW Z4 Roadster.
The standard 4 x 25-watt BMW Professional CD radio with six speakers uses antenna diversity for enhanced radio reception whether you are heading to the mountains or the valleys. The radio includes an integral CD player with motorised slot and it can also be connected to a BMW CD changer and will play MP3 files on CD.

HiFi System Professional for the BMW Z4 Roadster.
Up to fourteen high-quality loudspeakers fill the cabin of the BMW Z4 Roadster with up to 650 watt of brilliant sound. The optional surround sound system is precisely calibrated to the architecture of the cabin. Three subwoofers, located under the front seats, come as standard and deliver a richer, more detailed bass experience. A pleasure for the ears, even at higher speeds and with the roof down.

[SupremeArt]

Originally Posted by Memphis1

HiFi System Professional for the BMW Z4 Roadster.
Up to fourteen high-quality loudspeakers fill the cabin of the BMW Z4 Roadster with up to 650 watt of brilliant sound. The optional surround sound system is precisely calibrated to the architecture of the cabin. Three subwoofers, located under the front seats, come as standard and deliver a richer, more detailed bass experience. A pleasure for the ears, even at higher speeds and with the roof down

Just a bit confused, was this a copy ad paste from a BMW brochure? Just seems a bit vague: "up to" fourteen loudspeakers? "optional" surround sound system? There was no Surround Sound Option available...

Like posting this:

HiFi Professional System.
Excellent sound reproduction is assured by the HiFi Professional System. You can enjoy your favourite music in superb fidelity, thanks to the powerful amplifier, sophisticated equalizer and high-performance speakers. The surround feature lets you simulate a range of different environments, so you can create precisely the audio mood that you want.

The high-quality components of this sound system transform the cabin of your BMW into a concert hall. Specially-developed subwoofers with Carver technology guarantee rich, deep and remarkably lucid bass tones.
The Professional system delivers a greater output, producing crystal-clear sound up to 120 dB at 40 Hz. The influence of driving noise is smoothly compensated by the equalizer, which adjusts the sound according to the vehicle's speed.
The multi-directional speaker system distributes different frequency bands to different speakers, resulting in crisply differentiated and accurate bass, mid-range and treble tones, and a three-dimensional, transparent sound reproduction, with compelling basses and brilliant trebles.
Wherever you're sitting, you'll enjoy realistic, balanced stereo, thanks to the precise alignment of the speakers. The equalizer lets you refine the sound output to suit your personal taste. The HiFi Professional System integrates seamlessly with the BMW Radio devices and meets all regulatory requirements for electromagnetic shielding.