Toa HLS46S-8 User manual

TOA SPEAKER COMPONENT
LOW-FREQUENCY LOUDSPEAKER
HLS46S-8
DESCRIPTION
The HLS46S-8 is a 460mm (18 in.) low-frequency loud-
speaker designed for professional applications in high
level sound reinforcement environments such as studios,
theaters, concert halls, auditoriums, discos and live
sound reinforcement applications, where high efficiency,
ultra-low-frequency response, and faithful reproduction
are required. The HLS46S offers high power handling
capacity and a uniform frequency response from 20Hz to
3,000Hz. A crossover frequency of 1,000Hz or lower is
recommended to obtain smoothest overall system re-
sponse. Nominal impedance is 8 ohms for the HLS46S-8.
The loudspeaker employs a low-mass 100mm (4 in.)
diameter voice coil of edgewound copper-clad aluminum
ribbon on an aluminum coil form, which operates in a flux
density of 13,600 gauss. The voice coil is driven by a
powerful ferrite magnet, which is supported by a rugged
diecast aluminum frame. The cone suspension is made of
exceptionally high-compliance, damped-cloth surround.
FEATURES
1. Smooth, extended ultra-low-frequency response.
2. High power handling capacity: 600 watts continuous pink
noise (AES Standard).
3. High efficiency and linearity in ultra-low response.
4. Low distortion.
5. Voice coil of edgewound copper-clad aluminum ribbon,
with an aluminum coil form.
6. Powerful ferrite magnet structure.
7. Rigid diecast aluminum construction.

SPECIFICATIONS
NominalDiameter
Nominallmpedance 460mm (18 in.) 8 ohms THIELE-SMALL PARAMETERS
fs
Re
30Hz
5.5 ohms
MinimumImpedance
above Fs
Power Handling*
1
7.0 ohms ±10% (25°C)
600 watts continuous pink noise (AES standard)
Qts
Qms
Qes
Vas
Sd
Xmax
Vd
ηοηο (half space)
0.41
2.5
0.49
430 lit. (15.2 ft3)
0.126m2 (195 in2)
10.3mm (0.41 in.)
1,294cm3 (79.0 in3)
2.4%
Sensitivity*
2
FrequencyRange
HighestRecommended
CrossoverFrequency
EffectivePistonDiameter
Displacement Limit (p-p)
VoiceCoil Diameter
VoiceCoilMaterial
Voice Coil Insulation
Voice Coil Winding Depth
Top-PlateThickness
BI Factor
EffectiveMovingMass
Flux Density
Polarity
98dB SPL (1W/1m)
20Hz to 3,000Hz
1,OOOHz
400mm (16 in.)
40mm (1.6 in.)
100mm (4 in.)
Edgewound copper-clad aluminum ribbon
Aluminum
30mm (1.2 in.)
12mm (0.47 in.)
17.4 N/A
0.145kg
13,600 gauss
Positive voltage on plus (RED) terminal gives
forwarddiaphragmmotion.
Pe (Max)
MOUNTING DATA
OverallDiameter
BoltPatternDiameter
Baffle Cutout Diameter
600 watts continuous pink noise
464mm (18.3 in.)
440mm (17.3 in.)
Front Mount: 422mm (16.6 in.)
Rear Mount: 420mm (16.5 in.)
Depth
202mm (7.95 in.)
LoudspeakerVolume
8 lit. (0.28 ft3)
Weight
StandardAccessories
Notes
16.5kg (36.4 Ibs.)
Mounting screws, washers and nuts: each 8
1. *1AES Standard IS 60Hz to 600Hz continuous pink noise, at -12dB/Octave cut-off, and with a
6dB crest factor, measured for 2 hours, with the unit suspended in free air.
2. *2Sensitivity is based on a band-limited (100 to 800Hz) pink noise signal.
3. Specifications are subject to change without notice.
APPEARANCE AND DIMENSIONAL DIAGRAM
CHARACTERISTIC DIAGRAMS
*Frequency Response and Impedance Curve
26”) (0 35’
8 equally spaced at
FREQUENCY (Hz)
Frequency response is measured in a spherical free-field environment, under 1 watt
& 1 meter conditions, with a swept sine wave signal, while the speaker unit is
mounted in an 200-liter sealed box. The impedanced magnitude curve is measured
while the speaker is suspended in free air, with its cone in the vertical plane
*Distortion Response
ARCHITECT’S AND ENGINEER’S SPECIFICATIONS
The low-frequency loudspeaker shall be a TOA Model HLS46S-8 or
approved equivalent. The loudspeaker shall have a 460mm (18 in.)
nominal diameter, with a bolt pattern diameter of 440mm (17.3 in.), a
weight of 16.5kg (36.4 Ibs.), and a depth of 202mm (7.95 in.). The loud-
speaker shall have a rigid diecast aluminum frame that shall permit front
or rear mounting. The loudspeaker shall have a 600 watts, AES
Standard power-handling capacity and a uniform frequency response
from 20Hz to 3,000Hz, with a recommended crossover frequency of
1,000Hz or lower to obtain smoothest overall system response.
Band-limited (100 to 800Hz) pink noise sensitivity shall be 98dB (1W/
1m). Nominal impedance shall be 8 ohms. The loudspeaker shall
employ a low-mass 100mm (4 in.) diameter voice coil of edgewound
copper-clad aluminum ribbon of 30mm (1.2 in.) winding depth, on an
aluminum coil form, operating in a flux density of 13,600 gauss. The
voice coil shall be driven by a powerful ferrite magnet. Effective moving
mass shall be 0.145kg. The cone suspension shall be made of
exceptionally high-compliance, damped-cloth surround.
FREQUENCY (H Z )
Distortion response is measured with a swept sine wave signal, at 60 watts (-10dB
power) & 1 meter, and while the speaker unit is mounted in an 200-liter sealed box
TOA Corporation
Printed inJapan833-64-827-90