TL-1603 Low-Frequency Loudspeaker

Designed specifically to handle the increased average power that today's amplifiers deliver. In terms of sound, emphasis is placed on low distortion and low coloration.
VOICE COIL A high maximum input of 500 watts is achieved through the use of an edgewise-wound, long-travel voice coil. Making more use of the flux within the magnetic gap, this voice coil provides higher transducing efficiency. Moreover, high linearity is maintained over a long distance for lower distortion. Both the voice-coil bobbin and the adhesive are made of a highly heat-resistant material to permit high maximum input.
MAGNETIC CIRCUIT Weighing 2kg (4.4 lbs.), a powerful ferrite magnet combines a high flux density of 11,800G and low distortion. This, along with a long-travel voice coil and new rear suspension design, contributes to the high operating efficiency of 97dB/W (1m).
DIAPHRAGM Rigidity and light weight of the diaphragm permits the unit to withstand high-amplitude inputs for low-distortion output. The corrugated cloth surround is coated with a damping material to make diaphragm movement more linear and discourage cone breakup.
HOUSING Warp-proof and non-resonating, the heavy die-cast aluminum frame precisely centers the diaphragm for accurate low-distortion sound reproduction.
CROSSOVER We recommended that the dividing network (low-pass filter) for the TL-1603 use a crossover frequency of 900Hz or lower, and a attenuating slope of 12dB/oct. or 18dB/oct.