Toa HLS46UL-8 Manuel utilisateur

TOA SPEAKER SYSTEM

LOW FREQUENCY LOUDSPEAKER

HLS46UL-8

DESCRIPTION

The HLS46UL-8 is an 18" low-frequency loudspeaker

designed for professional applications in high level sound

reinforcement environments where high efficiency, super-low-

frequency range, and faithful reproduction are required,

such as studios, theaters, concert halls, auditoriums, discos,

and in live sound reinforcement applications.

The 46UL offers exceptionally high power handling capacity,

ultra-linearity in the super-low-frequency range, and a uni-

form frequency response from 20 Hz to 500 Hz. A crossover

frequency of 500 Hz or lower is recommended to obtain

smoothest overall system response. The loudspeaker em-

ploys a low-mass 4" (100 mm) diameter voice coil of edge-

wound copper ribbon on an aluminum coil form, which

operates in a flux density of 13,600 gauss. The voice coil is

driven by powerful double ferrite magnets, which are sup-

ported by a rugged diecast aluminum frame. The cone sus-

pension is made of exceptionally high compliance cloth

surround, damped.

FEATURES

1. Smooth, extended super-low-frequency response.

2. High power handling capacity: 240 watts continuous

pink noise: 720 watts continuous program input.

3. High efficiency and ultra-linearity in super-low range.

4. Low distortion.

5. Voice coil of edge-wound copper ribbon, with an alumi-

num coil form.

6. Powerful double ferrite magnet structure.

7. Rigid diecast aluminum construction.

SPECIFICATIONS

Nominal Diameter 18 inches (460 mm)

THIELE-SMALLPARAMETERS

Nominal Impedance

8ohms

fs (Resonance Frequency)

28 Hz

Power Capacity

Continuous Pink Noise*

240wattsRMSofband-limitedpink noise

Re(D.C.Resistance) 5.0 ohms

(Total Q) 0.28

Continuous Program

Sensitivity*

(40 Hz to 1 kHz)

720 watts

95 dB (1W /1m)

(Mechanical Q)

(Electrical Q)

(EquivalentVolume

Compliance)

(LoudspeakerVolume)

3.3

0.31

12 ft

(0.34 m

)

0.32ft

(0.009m

)

Frequency Range

20 Hz to 500 Hz

Highest Recommended

Crossover Frequency

500Hz

Effective Piston Diameter 16 inches (400 mm)

ηοηο

(Reference Efficiency) 2.3%

Effective Moving Mass

Flux Density

Voice Coil Diameter

0.21 kg

13,600gauss

4 inches (100 mm)

MOUNTING DATA

Overall Diameter 18.3 inches (464 mm)

Bolt Pattern Diameter 17.3 inches (440 mm)

VoiceCoilMaterial

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

Duration of power capacity test is 24 hours. Speaker unit

mounted in a 160-liter vented box.

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.

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

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-litervented 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

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