Polk Audio Signature S15 pasive bookshelf speaker

Product highlights:
frequency response: 50-40,000 Hz
sensitivity: 88 dB
8-ohm impedance
handles up to 100 watts
1" Terylene high-res dome tweeter
5-1/4" mica-reinforced polypropylene Dynamic Balance cone driver
Power Port technology for better bass response
non-resonant MDF cabinet
5-way gold-plated binding posts
anti-diffraction magnetic grilles for minimal sonic interference
keyhole slot for wall-mounting
7-9/16"W x 12-1/16"H x 10-1/4"D
weight: 13 lbs.