THV is a very high performance, all-horn, three-way system in a single wide-bandwidth package.

The loudspeaker system shall be of the trapezoidal three-way bi-amp Hybrid® fully horn loaded type, consisting of one 15” (380mm)/4” (100mm) voice coil horn and reflex loaded low frequency transducer, one 10” (250mm)/2.5” (63.5mm) voice coil horn loaded mid frequency transducer with a “phase-ball” loading device and one 1” (25mm) exit HF compression driver mounted on a constant directivity horn. The enclosure shall be of a multi-laminate birch ply construction with threaded inserts for wall and ceiling mounting and fitted with 4 pocket handles and 4” (100mm) castors for easy deployment. The loudspeaker shall be operated with a separate electronic controller or amplifier providing a 200Hz crossover between low and mid/high frequency sections. The mid and high frequency sections shall be integrated by an internal 2kHz passive crossover network. Performance of the loudspeaker system with its electronic controller or amplifier shall meet or exceed the following criteria: Frequency response measured 1 metre on axis shall be 50Hz-18kHz ±3dB. High frequency dispersion at -6dB points shall be 70°H x 40°V. Power handling shall be 750W AES, 3000W peak LF, 300W AES, 1200W peak MF + HF. Rated impedance shall be 8 ohms LF, 8 ohms MF + HF. Maximum SPL calculated at 1 metre on axis shall be 133dB continuous, 139dB peak. Dimensions (W) 558mm x (H) 1067mm x (D) 780mm (22ins x 42ins x 30.7ins). Weight 77.5kg (170.5lbs). The loudspeaker system shall be the Martin Audio THV