TH315 is a 3-way 15", high sensitivity, high SPL, long-throw speaker.
Mid-bass and mid-high coaxial driver all feature horn-loaded design, sound
quality is balanced, clear and bright. Unit configuration: 1x15" high
efficiency neodymium mid-bass unit, 1x2" exit throat 90mm voice coil
neodymium MF driver, 44mm neodymium HF driver coaxial unit. The cabinet is made
of multilayer composite plywood with wear-resistant polyurea paint. TH315A is
equipped with two channels digital amplifier with DSP based on TH315 to be an
active speaker.  MODEL TH315 TH315A FREQUENCY
RESPONSE(-3dB) 50Hz-18KHz 50Hz-18KHz FREQUENCY
RESPONSE(-10dB) 45Hz-20kHz   45Hz-20kHz   DRIVERS 1×15"(385mm)/3"voice
coil LF 1×15"(385mm)/3"voice coil
LF   1×2"(50mm)/3.5"voice coil
MF  1×2"(50mm)/3.5"voice coil
MF    1×2"(50mm)/1.7"voice coil
HF 1×2"(50mm)/1.7"voice coil HF RATED POWER 400W
RMS,1600W
peak 300W/8Ω+800W/8Ω SENSITIVITY 100dB 
1watt/1meter -- MAXIMUM SPL 126dB continuous,132dB peak 126dB
continuous,132dB peak IMPEDANCE 8 ohms
nominal -- DISPERSION(-6dB) 70°×40° 70°×40° CROSSOVER
FREQUENCIES 500Hz?5kHz passive -- INPUT
CONNECTORS 2×Speakon NL4  INPUT TYPE: Balanced Differential
line PACKAGE
SIZE 620mm×620mm×870mm 620mm×620mm×870mm NET
WEIGHT 41 kg/pc 44 kg/pc GROSS WEIGHT 46 kg/pc 49 kg/pc