TOA TH-TU Datablad
TH-650/660
Reflex Horns and Driver Units
TU-631/651
TH-650
TH-660
TU-631M/651M
DESCRIPTION
TOA's TU Series Driver Units are designed to be used in combination with TOA's TH-650 or TH-660 round horn. The TH/TU
combined speaker can be used for both indoor and outdoor applications, as well as for background music reproduction. The lineup
includes four models rated at 30 W (TU-631 and TU-631M) and 50 W (TU-651 and TU-651M). The "M"-type models are designed for
use in high-impedance (70V/100V lines) systems and standard models for low-impedance (16 Ω) systems. This wide product lineup
permits selection of the ideal speaker for most applications.
TU Series driver units feature newly developed diaphragms employing special heat-resistant polyimide film to prevent the diaphragm
from absorbing moisture and changing shape, as well as to improve the low frequency characteristics. High speaker efficiency has
also been realized by minimizing the gap produced when the diaphragm bobbin is installed in the magnetic circuitry slit.
High-impedance models are equipped with an input impedance selector switch which facilitates impedance settings without requiring
disassembly. The switch is also equipped with an OFF position to prevent speaker damage resulting from incorrect impedance
setting.
TH Series horns have two types of 500 mm and 600 mm in diameter. Both types feature TOA's round shape to ensure high speech
clarity and sound quality suitable for music reproduction.
External hardware (screws, bolts, nuts) are made of stainless steel, while the mounting bracket and the horn itself are treated with 50micron thick powder paint coating which is about three times thicker than that of the conventional horns. All of these factors combine
to ensure the speaker's excellent weatherproofing and corrosion resistance. In addition, the external horn flare is made of aluminum
which is more shock-resistant than resin.
FEATURES
TU Series Driver Units
• Both high-impedance (70V/100V lines) models and low-impedance (16 Ω) models available.
• Two power ratings: 30 W and 50 W.
• Input impedance selector on high-impedance models facilitates input impedance matching from the outside.
• Gray color (corresponding to RAL 7042) helps driver units match off-white horns.
• Compliance with IP65.
TH Series Horns
• External stainless steel hardware (screws, bolts, nuts), and powder-coated horn and bracket ensure superb weatherproofing and
corrosion-resistance.
• Shock-resistant aluminum round horn.
• Unobtrusive two-tone colors (off-white color corresponding to RAL 9010: horn, and gray corresponding to RAL7042: bracket) help
speakers blend in with surroundings.
TOA Corporation TH-650/660 1/4
TH-650
TU-631/TU-631M+TH-650
[dB]
120
Frequency Response (1W/1m)
Beamwidth vs. Frequency (-6dB down point)
[deg]
110
200
SPL
Beamwidth
100
90
100
50
80
70
100
500
1k
5k
10k
Frequency
[Q]
100
10
20
20k
[Hz]
Directivity Factor vs. Frequency
50
100
500
1k
5k
20k
[Hz]
Polar Response
0°
10
50
Directivity Factor
10k
Frequency
60°
0°
10
330°
30°
330°
30°
0
0
-10
-10
60°
300°
-20
10
300°
-20
-30
-30
-40
-40
270°
270°
90°
90°
5
-40
-40
-30
-30
-20
120°
-20
120°
240°
-10
1
20
0
0
50
100
500
1k
5k
10k
Frequency
150°
20k
[Hz]
240°
-10
150°
210°
10
180°
210°
10
2000Hz
1000Hz
500Hz
8000Hz
4000Hz
TU-651/TU-651M+TH-650
[dB]
120
Frequency Response (1W/1m)
Beamwidth vs. Frequency (-6dB down point)
[deg]
110
200
SPL
Beamwidth
100
90
100
50
80
70
100
500
1k
5k
10k
Frequency
[Q]
100
20k
[Hz]
Directivity Factor vs. Frequency
10
20
50
100
500
1k
5k
20k
[Hz]
Polar Response
0°
10
50
Directivity Factor
10k
Frequency
60°
0°
10
330°
30°
0
-10
-10
60°
300°
-20
300°
-20
-30
10
330°
30°
0
-30
-40
-40
270°
90°
270°
90°
5
-40
-40
-30
-30
-20
120°
240°
-20
120°
-10
1
20
0
50
100
500
1k
Frequency
5k
10k
20k
[Hz]
150°
0
150°
210°
10
180°
240°
-10
2000Hz
1000Hz
500Hz
210°
10
8000Hz
4000Hz
TOA Corporation TH-650/660 2/4
TH-660
TU-631/TU-631M+TH-660
[dB]
120
Frequency Response (1W/1m)
Beamwidth vs. Frequency (-6dB down point)
[deg]
110
200
SPL
Beamwidth
100
90
100
50
80
70
100
500
1k
5k
10k
Frequency
[Q]
100
10
20
20k
[Hz]
Directivity Factor vs. Frequency
50
100
500
1k
5k
20k
[Hz]
Polar Response
0°
10
50
Directivity Factor
10k
Frequency
60°
0°
10
330°
30°
330°
30°
0
0
-10
-10
60°
300°
-20
10
300°
-20
-30
-30
-40
-40
270°
270°
90°
90°
5
-40
-40
-30
-30
-20
120°
-20
120°
240°
1
20
0
0
50
100
500
1k
5k
10k
Frequency
150°
20k
[Hz]
240°
-10
-10
150°
210°
10
180°
210°
10
2000Hz
1000Hz
500Hz
8000Hz
4000Hz
TU-651/TU-651M+TH-660
[dB]
120
Frequency Response (1W/1m)
Beamwidth vs. Frequency (-6dB down point)
[deg]
110
200
SPL
Beamwidth
100
90
100
50
80
70
100
500
1k
5k
10k
Frequency
[Q]
100
20k
[Hz]
Directivity Factor vs. Frequency
10
20
50
100
500
1k
5k
20k
[Hz]
Polar Response
0°
10
50
Directivity Factor
10k
Frequency
60°
0°
10
330°
30°
0
-10
-10
60°
300°
-20
300°
-20
-30
10
330°
30°
0
-30
-40
-40
270°
90°
270°
90°
5
-40
-40
-30
-30
-20
120°
240°
-20
120°
-10
1
20
0
50
100
500
1k
Frequency
5k
10k
20k
[Hz]
150°
0
150°
210°
10
180°
240°
-10
2000Hz
1000Hz
500Hz
210°
10
8000Hz
4000Hz
TOA Corporation TH-650/660 3/4
SPECIFICATIONS
TH-650
Sensitivity
Frequency Response
IP Code
Driver Coupling
Operating Temperature
Finish
Dimensions
Weight
Read Input
Line Voltage
Rated Impedance
30 W
—
16 Ω
TU-631
DRIVER UNIT COVER
TH-660
110 dB (1 W, 1 m) (When operated with a driver.)
200 – 6,000 Hz (When operated with a driver.)
IP 65 (When operated with a driver.)
1-3/8 18 threads (inch screw)
-20°C to +55°C (must be free from dew condensation)
Horn flare and flange: Aluminum, off-white, powder coating
Reflector horn: ABS resin, off-white
Bracket holder: Aluminum, gray, powder coating
Bracket: Steel, gray, powder coating
Screws and bolts: Stainless steel
ø500 × 394 (D) mm
ø600 × 425 (D) mm
2.9 kg
3.6 kg
UC-200A
TU-631M
TU-651
TU-651M
30 W
50 W
50 W
100 V line or 70 V line
—
100 V line or 70 V line
100 V line: 330 Ω (30 W), 670 Ω (15 W), 16 Ω
100 V line: 200 Ω (50 W), 330 Ω (30 W),
1 kΩ (10 W), 2 kΩ (5 W)
670 Ω (15 W)
70 V line: 170 Ω (30 W), 330 Ω (15 W),
70 V line: 100 Ω (50 W), 200 Ω (25 W),
670 Ω (7.5 W), 1 kΩ (5 W),
330 Ω (15 W), 670 Ω (7.5 W)
2 kΩ (2.5 W)
Sensitivity
110 dB (1 W, 1 m) (When operated with JIS C 5504 standard horn.)
Frequency Response
150 – 6,000 Hz (When operated with JIS C 5504 standard horn.)
IP Code
IP 65 (When operated with a horn.)
Horn Coupling
1-3/8 18 threads (inch screw)
Polarity
Hot: Black, Corn: White
Operating Temperature
-20°C to +60°C (must be free from dew condensation)
-20°C to +55°C (must be free from dew condensation)
Finish
Flange: Aluminum, gray, powder coating
Rear cover: ABS resin, gray
Screws: Stainless steel
Speaker cable: Polyvinyl chloride insulated cabtyre cable (6 mm in diameter, 600 mm in length)
Dimensions
ø139 x 106 (D) mm ø139 x 149 (D) mm
ø139 x 106 (D) mm
ø139 x 149 (D) mm
Weight
1.4 kg
2 kg
1.9 kg
2.7 kg
Option
Driver unit cover:
Driver unit cover: UC-200A
Driver unit cover:
Driver unit cover: UC-200A
UC-200A
UC-200A
Matching Transformer:
Matching Transformer:
TM-30T, TM-60T
TM-30T, TM-60T
APPEARANCE AND DIMENSIONAL DIAGRAMS
TH-650
532
TH-660
{509 with TU-631 or TU-651 (option)}
511
{488 with TU-631 or TU-651 (option)}
425
396
3–ø11
206
280
215
ø500
ø600
394
375
TU-631M or TU-651M
(option)
3–ø11
TU-631M or TU-651M
(option)
51 51
58
51 51
44.8
37
206
Unit: mm
TOA Corporation
www.toa.jp
TOA Corporation TH-650/660 4/4
Specifications are subject to change without notice.
(0806) 833-62-250-7B U
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