Toa HFD-220-8/16, HFD-260-8/16 Instruction Manual

PROFESSIONAL SOUND SYSTEM

Instruction Manual

COMPRESSION DRIVER

HFD-260-8/16 HFD-220-8/16

DESCRIPTION

HFD-260-8/16

TOA's High-Frequency Compression Driver Models
HFD-260-8/16, in 8 ohms and 16 ohms versions, are
designed for use with in high level sound systems of
highest quality such as theaters, concert halls,
auditoriums, churches, etc. It may be used with TOA's

LE series constant directivity horns and will provide a
high degree of efficiency and smooth frequency
response from 500 Hz to 18,000 Hz. The voice coil of
this driver is a 72mm (2.83") diameter, edged-wound
copper-clad aluminium ribbon coupled to a 50 micron
hard duralumin diaphragm. The diaphragm voice coil
assembly can be replaced in the field without assembly
uses self-aligning dowels for perfect centering in the
voice coil gap, which has a flux density of 22,000 gauss
generated by a 3.22 kg (7 Ibs.) ferrite magnet. A
machined phasing plug with three acoustic slots serves
as the pole piece and is utilized to provide the proper
phase relationship between the sound emanating from
the center and that coming from the edge of the
diaphragm/voice coil assembly.

Model HFD-260-8/16

HFD-220-8/16

HFD-220-8/16

TOA's High-Frequency Compression Driver Models
HFD-220-8/16, in 8 ohms and 16 ohms versions, are
designed for use with in high level sound systems of
highest quality such as theaters, concert halls,
auditoriums, churches, etc. It may be used with TOA's
LE series constant directivity horns and will provide a
high degree of efficiency and smooth frequency
response from 500 Hz to 15,000 Hz. The voice coil of
this driver is a 44.6mm (1.76") diameter, edged-wound
copper-clad aluminium ribbon coupled to a 50 micron
hard duralumin diaphragm. The diaphragm voice coil
assembly can be replaced in the field without assembly
uses self-aligning dowels for perfect centering in the
voice coil gap, which has a flux density of 19,000 gauss
generated by a 1.1 kg (2.4 Ibs.) ferrite magnet. A

machined phasing plug with two acoustic slots serves as
the pole piece and is utilized to provide the proper
phase relationship between the sound emanating from
the center and that coming from the edge of the
diaphragm/voice coil assembly.

FEATURES

1. Smooth frequency response

2. A flux density of 22,000 gause generated by a 3.22 kg (7 Ibs.) ferrite magnet ( HFD-260-8/16)

3. High efficiency (SPL : 111 dB/W/m for HFD-260-8/16 and 110 dB/W/m for HFD-220-8/16)

4. Very high power capacity : 50 watts continuous pink noise (500~20,000Hz) for HFD-260-8/16

: 30 watts continuous pink noise (800~20,000Hz) for HFD-220-8/16

5. 49 mm (2 in.) dia. throat

6. Voice coil of edge-wound copper-clad aluminu m ribbon

7. 50-micron duralumin diaphragm

8. Field replaceable diaphragm

TOA Corporation

KOBE, JAPAN

EQUALIZATION

When using the HFD-260-8/16 and HFD-220-8/16 in combination with the LE series constant directivity

horns and w ith TOA Integrated sound processor "SAORI", set the horn equalizer built in th e digital channel

divider module, long delay type (IS-110DL4, IS-110DL2) of the "SAORI" as shown the table below.

LE-940
HFD-260-8/16
HFD-220-8/16

TYPE 1
TYPE 6

SPECIFICATIONS

Power Handling Capacity

Continuous Pink Noise

Continuous Program

Nominal Impedance

Pressure Sensitivity

500~5,000 Hz pink noise

4-meter measurement

distance referred to 1 meter

Frequency Response

Recommended crossover frequency

Throat diameter

Polarity

LE-640
TYPE 1
TYPE 6

LE-420
TYPE 2
TYPE 7

50 watts RMS (500~20,000Hz)

150 watts

8 : HFD-260-8

16 :HFD-260-16

LE-M124

TYPE 3
TYPE 8

HFD-260-8/16

111 dB/W/m : LE-940 horn

110 dB/W/m : LE-M94 horn

500 ~18,000 Hz

500 Hz or higher

LE-M94
TYPE 2
TYPE 8

49 mm (2

LE-M64
TYPE 2
TYPE 8

HFD-220-8/16

30 watts RMS (800~20,000Hz)

90 watts

8 : HFD-220-8

16 :HFD-220-16

110 dB/W/m : LE-940 horn

109 dB/W/m : LE-M94 horn

800

~15,

800 Hz or higher

in.)

Positive voltage to + terminal produces negative acoustic

pressure in the throat

LE-M42
TYPE 5
TYPE 9

000 Hz

Recommended horn

Finish
Dimensions
Net weight

* Specifications are subject to change without notice.

LE-940, LE-640, LE-42 0, LE-M124, LE-M 94, LE-M64, LE-M42

Black NEW-ALKONE paint

225 mm (8.86") dia.

156 mm (6.14") depth

11.5

kg

(25.4

Ibs.)

CHARACTERISTIC DIAGRAMS (1W, 1m 1/3 Octave Pink Noise)

HFD-260 + LE-940

HFD-220 + LE-940

• HFD-260 + LE-M94

HFD-220 + LE-M94

152 mm (5.98") dia.

178 mm (7.01") depth

4.8 kg

(10.6

Ibs.)