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TOA hls46ul-8 Guide De Spécification

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SPECIFICATIONS
Nominal Diameter
18 inches (460 mm)
THIELE-SMALL PARAMETERS
Nominal Impedance
8 ohms
fs (Resonance Frequency) 
28 Hz
Power Capacity
Continuous Pink Noise*
1
240 watts RMS of band-limited pink noise
Re (D.C. Resistance)
5.0 ohms
Q
TS 
(Total Q)
0.28
Continuous Program
Sensitivity*
2
(40 Hz to 1 kHz)
720 watts
95 dB (1W /1m)
Q
MS 
(Mechanical Q)
Q
ES 
(Electrical Q)
V
AS 
(Equivalent Volume
Compliance)
V
ID 
(Loudspeaker Volume)
3.3
0.31
12 ft
3 
(0.34 m
3
)
0.32 ft
3 
(0.009 m
3
)
Frequency Range
20 Hz to 500 Hz
Highest Recommended
Crossover Frequency
500 Hz
Effective Piston Diameter
16 inches (400 mm)
ηο 
ηο 
(Reference  Efficiency)
2.3%
Effective Moving Mass
Flux Density
Voice Coil Diameter
0.21 kg
13,600 gauss
4 inches (100 mm)
MOUNTING DATA
Overall Diameter
18.3 inches (464 mm)
Bolt Pattern Diameter
17.3 inches (440 mm)
Voice Coil Material
Edgewound copper ribbon
Baffle Cutout Diameter
Front Mount
Rear Mount
16.6 inches (422 mm)
16.5 inches (420 mm)
Coil Form
Aluminum
DIMENSIONAL DIAGRAM
Depth
8.86 inches (225 mm)
Weight
46 Ibs (20.8 kg)
Standard Accessories
Mounting Screws and Nuts...............each 8
Notes
1 . *
1
Duration of power capacity test is 24 hours. Speaker unit 
is 
mounted in a 160-liter vented box.
2 . *
2
Measured at 1 watt and 1 meter using band-limited pink noise (50 Hz to 500 Hz) under the condition
that speaker unit is mounted in 180-liter vented box.
3 . Positive voltage on plus (RED) terminal gives forward diaphragm motion.
*Specifications are subject to change without notice.
2nd Harmonic Distortion
(1m, 6.25W to 400W, 180-liter vented box, sine wave)
 
 
CHARACTERISTIC  DIAGRAMS
Frequency Response
OK 
Measured at 1 watt and 1 meter using swept 1/3 octave
pink noise under the condition that speaker unit 
is
mounted in 180-liter vented box.
(1m, 1W to 3.13W, 180-liter vented box, sine wave)
Impedance
3rd Harmonic Distortion
(1m, 6.25W to 400W, 180-liter vented box, sine wave)
Measured under the condition that speaker unit 
is
suspended, with cone in the vertical plane, in the
“free-air”.
Power Linearity
(1m, 1W to 400W, 180-liter vented box, sine wave)
(1m, 1W to 3.13W, 180-liter vented box, sine wave)
TOA Corporation
Printed in Japan (305K) 833-64-813-4A