Logitech Z506 5.1 Surround Sound Speakers for PC PS3 Xbox 360 Wii iPod DVD player 3D Stereo 75 watts (RMS) Ported, down-firing subwoofer 980-000433
$169

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Logitech Z906 5.1 Channel THX Certified Speaker System THX® Certified 1000-watt peak power 500watts RMS Dolby digital sound Digital and analog inputs 980-000470
$539

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