NS-AP7800M/NS-AP7800EYAMAHA ELECTRONICS CORPORATION, USA6660 ORANGETHORPE AVE.,BUENA PARK, CA 90620http://www.yamaha.com/yecPhone: 1-800-492-6242P/N 430063 Printed in ChinaSPECIFICATIONSType 2-Way Bass Reflex (Front)2-Way Acoustic Suspension (Center, Surround)Speaker 2-1/4" woofer x 2 + 3/4" silk dome tweeterFrequency RangeFront 90 Hz – 35 kHzCenter/Surround 100 Hz – 35 kHzImpedance 6 ohmsNominal Input 30 WMaximum Input 100 WSensitivityFront 82 dB/2.83 V/mCenter 82 dB/2.83 V/mSurround 82 dB/2.83 V/mCrossover FrequencyFront 4 kHzCenter 4 kHzSurround 4 kHzDimension (H x W x D)Front (Cabinet) 40" x 3-11/16" x 4-3/4" (1016 x 93.5 x 120.5 mm)(with Pedestal) 41-3/16" x 3-11/16" x 4-3/4" (1046 x 93.5 x120.5 mm)Center 3-11/16" x 10" x 4-3/4" (93.5 x 254 x 120.5 mm)Surround 10" x 3-11/16" x 4-3/4" (254 x 93.5 x 120.5 mm)WeightFront (with Pedestal) 4.42 kg/9.75 lbs(without Pedestal) 3.52 kg/7.76 lbsCenter 1.55 kg/3.42 lbsSurround 1.60 kg/3.53 lbsMagnetic Shielding Yes.*Specifications subject to change without notice due to product improvements.