I have been running the spherex 5.1 surround sound system form 1.5 years, and I love it!

their website is

http://www.spherexinc.com/home.aspx

The sound rocks, and the omni-polar speakers make finding the sweet spot real easy!

Anyhow just my 2 cents!


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Signal Input Connections
The Xbox 5.1 Surround Sound System has five audio inputs: two Toslink optical digital, one coaxial digital, one stereo analog and one USB 1.1 Device Port*.

Use these inputs to connect audio sources, such as Xbox, DVD player, CD player, portable media player, computer sound card, or TV set. When feasible, use a digital input to allow for Dolby Digital and DTS playback.

AUDIO section
FRONT (135 Hz ~ 20 kHz, 0.3 % T.H.D. at one channel driven) 55W + 55 W
SUBWOOFER (40 Hz ~ 114 Hz, 1.5 % T.H.D. at one channel driven) 102W
Effective power output during SURROUND operation*

FRONT (110 Hz ~ 20 kHz, 0.3 % T.H.D. at one channel driven) 55W + 55 W
CENTER (110 Hz ~ 20 kHz, 0.3 % T.H.D. at one channel driven) 55 W
SURROUND (140 Hz ~ 20 kHz, 0.3% T.H.D. at one channel driven) 16 W + 16 W
SUBWOOFER (40 Hz ~ 114 Hz, 1.5 % T.H.D. at one channel driven) 102 W

FRONT (1 kHz, 10 % T.H.D. at one channel driven) 70 W + 70 W
CENTER (1 kHz, 10 % T.H.D. at one channel driven) 70 W
SURROUND (1 kHz, 10 % T.H.D. at one channel driven) 24 W + 24 W
SUBWOOFER (100 Hz, 10 % T.H.D. at one channel driven) 110 W

*Please note that MaxxBass processing will psycho-acoustically extend perceived low frequency response.

Frequency response
Line (Optical 1, Optical 2, Coaxial, Analog, USB) 10 Hz ~ 100 kHz, 0 dB ~ -3.0 dB

Tone control
BASS ±10 dB (at 100 Hz)
TREBLE ±10 dB (at 10 kHz)

DIGITAL AUDIO section
Sampling frequency 32 kHz, 44.1 kHz, 48 kHz
Input level / impedance / wave length
Optical (-15 dBm ~ -24 dBm), 700 nm ±30 nm
Coaxial 0.5 Vp-p / 75 ohm

GENERAL
Power consumption Xbox 5.1 3.5 A
Xbox 5.1 420 W
Standby Power consumption less than 60W

DIMENSIONS
Satellites:
HxLxW: 5-1/2" x 6-1/2" x 3-1/4"
14 x 16.5 x 8.3cm
Weight: 2-1/2 lbs. / 1.1 kg

Subwoofer:
HxLxW: 16" x 9-1/4" x 16"
40.6 x 23.5 x 40.6cm
Weight: 28 lbs. / 12.7 kg

Over Carton:
LxWxH: 21-1/4" x 20-3/4" x 19-1/4"
54 x 52.7 x 48.9cm
Weight: 60 lbs. / 27.2 kg
UPC Code: 2930351000

*USB Streaming Capability through a future software update

Ciao