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SPECIFICATIONS
Specifications
Diameter: 380 mm
Rated Impedance
HLS38UL2-8 : 8
HLS38UL216 : 16
Power Handling Capacity *
1
: 500 W continuous pink noise
Sensitivity *
2
: 98 dB (1 W/1 m)
Frequency Range : 30 to 3,000 Hz
Highest Recommended Crossover Frequency : 1,000 Hz
Effective Piston Diameter : 330 mm
Displacement Limit (p-p) : 40 mm
Minimum Impedance
HLS38UL2-8 : 8.0 ±10% (25 °C)
HLS38UL216 : 16.0 ±10% (25 °C)
Voice Coil Diameter : 72 mm
Voice Coil Material : Edgewound copper ribbon
Voice Coil Winding Depth : 25 mm
Top-plate Thickness : 10 mm
Bl Factor
HLS38UL2-8 : 21.1 N/A
HLS38UL216
: 27.3 N/A
Effective Moving Mass : 0.090 kg
Flux Density : 16,000 gauss
Polarity : Positive voltage on plus (RED) terminal generates
the positive sound pressure.
Front External Diameter : 407 mm
Diameter between mounting holes : 370 mm
Baffle Cutout Diameter
Front Mount : 354 mm
Rear Mount : 350 mm
Depth : 186 mm
Loudspeaker Volume : 6 lit.
Weight : 12 kg
FREQUENCY RESPONSE
Frequency Response and Impedance Curve
Measuring Condition
Measuring environment: Anechoic chamber
Measurement distance: 1 m on the forward axis
Input signal: 1 W sine wave
Enclosure: 120-liter sealed box. (The impedance
curve has been obtained by measuring
the naked speaker.)
Thiele-small Parameters
Fs : 40 Hz
Re
HLS38UL2-8 : 5.8
HLS38UL216
: 11.6
Qts :
0.26
Qms
: 2.3
Qes
:
0.29
Vas : 180 lit.
Sd : 0.086 m
2
Xmax : 7.7 mm
Vd : 660 cm
3
o(Half space) : 3.9%
Pe(Max) : 500 W continuous pink noise
Accessories
Screw/washer assembly and nuts
8 each
*1 AES Standard (60 to 600 Hz)
*2 Based on a band-limited (100 to 800 Hz) pink noise
signal.
Note: The design and specifications are subject to
change without notice for improvement.
Distortion Response
Input signal: Sine wave of 50 W (1/10 of power handling
capacity.)
TOA Corporation
Printed in Japan
133-01-397-3A