High Quality Center Speaker: Boston Acoustic VRC series The Boston Acoustics VRC is a high-performance, 3-way center channel speaker from the well-regarded Video Reference (VR) series. It was designed to provide clear dialogue and a wide soundstage for home theater setups. Technical Specifications Speaker Type 3-way Center Channel (Magnetic Shielded) Tweeter 1" (25mm) VRH.O. Anodized Aluminum Dome with AMD Midrange 4.5" (115mm) Neodymium Copolymer Woofers Dual 4.5" (115mm) Neodymium Copolymer Frequency Response 70Hz – 20kHz (±3dB) Nominal Impedance 8 Ohms Sensitivity 92dB (1 watt @ 1 meter) Recommended Power 15 – 150 Watts Crossover Frequencies 500Hz, 2800Hz Dimensions 5" x 22" x 8" (127 x 559 x 204mm) Weight 9.5 kg Sensitivity is Key: The VRC has a high sensitivity of 92dB. This means it is very "easy to drive" with any amplifier. The Impedance Factor: While rated at 8 ohms, technical tests show the VRC can dip to about 4.1 ohms at certain low frequencies (around 60Hz). The AMD Technology: The "AMD" in the tweeter stands for Amplitude Modification Device. It’s a small bridge over the tweeter that uses five tiny tubes to cancel out high-frequency resonances. This gives the speaker a very "smooth" sound.. Speaker unit in very good condition. All drivers and tweeter are pristine. Pictures are part of the description. Please note the speaker dimensions, unit not small or short at all! also quite heavy! Will be packed with extra protection for safe shipment and arrival. Unit weight with cable: 9.5 kg Shipping estimated weight: 14 kg