The P815 is the direct descendant of the original DTS preview theater main loudspeaker. This reference-quality, precision full-range speaker is designed for large home cinemas, studios, screening rooms and small cinemas. It combines the P8 reference loudspeaker with the P15Si 15” low-frequency module to produce THX cinema reference levels at an incredible 8 meters (over 26 feet). The P815 requires external bi-amplification. The external amplifier provides both DSP crossover and amplification for the P8 mid/high-frequency module and the P15Si low-frequency module. From revealing the smallest details to producing the awesome impact of a full-scale 96/24 recording or film soundtrack, with the P815 you become one with the performance. Winner of the prestigious CEPro BEST Award from CE Pro magazine and the Exc!te Award from Custom Retailer magazine, the loudspeaker is THX Approved for integration into professional rooms, including THX Certified Screening Rooms and THX pm3 (professional Mixing, Monitoring and Mastering) studios.. Specification Details Maximum SPL Free-standing: 122 dB continuous / 126 dB peak; In baffle wall: 126 dB continuous / 132 dB peak Frequency Response -3 dB points at 40 Hz and 20 kHz Dispersion Pattern -6 dB Constant directivity: 80°H × 50°V from 1.5 kHz Crossover 4th Order Linkwitz-Riley 1.6 kHz and 150 Hz Components High Frequency: 1.5” compression driver with polyester diaphragm on a Procella-designed elliptical waveguide (P8); Low Frequency: 15” driver with 75 mm voice coil in 92 litre sealed box (LF815); Midrange: 8” high-output driver with 40 mm voice coil in 15 litre sealed box (P8) Connectivity 2 pair gold-plated binding posts Amplifier External, sold separately Construction Void-free MDF, internally cross-braced, semi-matte textured black paint finish Dimensions & Weight 1030 × 480 × 280 mm / 40.6” × 18.9” × 11.0”, 39.2 kg / 86.4 lbs Shipping Carton P8: 500 × 600 × 300 mm / 19.75” × 23.6” × 12”, 16.9 kg / 37.5 lbs; P15Si: 600 × 720 × 400 mm / 23.6” × 28.4” × 15.75”, 29 kg / 63.9 lbs Included Connecting bracket, damper feet, protective grilles Assembly Belgium, 100% QC testing