Toa BS-633AT - Manual (Page 2)

6. INPUT CHANGE
N
R
C
N R COM
(Factory-wired transformer connection)
Bridging terminal
Gray
Red
Black
White
Attenuator
1.7 kΩ
3.3 kΩ
COM
8 Ω
• BS-633A
Black wire
Black wire
Matching transformer
Matching transformer
• BS-633AT
Tubed terminal
To change the factory presetting (1.7 kΩ), detach and
reconnect the black wire to the 3.3 kΩ or 10 kΩ terminal.
To change the factory presetting (1.7 kΩ), detach and
reconnect the black wire to the 3.3 kΩ terminal.
Caution
Never connect the black wire to the rightmost tubed terminal.
Failure to observe this instruction may cause the amplifier
overload at an attenuator position, resulting in system failure.
HOT
COM
(Factory-wired transformer connection)
Bridging terminal
Black
White
1.7 kΩ
3.3 kΩ
10 kΩ
COM
8 Ω
N
R
C
N COM
(Factory-wired transformer connection)
Bridging terminal
Gray
Red
Black
White
Attenuator
1.7 kΩ
3.3 kΩ
COM
8 Ω
The BS-633A/633AT's input is factory-preset to 1.7 kΩ.
To change this, detach the black wire connector from the 1.7 kΩ
terminal, and reconnect it to the 3.3 kΩ or 10 kΩ terminal for the
BS-633A, or the 3.3 kΩ terminal for the BS-633AT.
5. WIRING
To change impedance, change the tap position of the
transformer.
5.1. BS-633A (without an Attenuator)
[Wiring diagram]
5.2. BS-633AT (with an Attenuator)
[2-wire system connection]
Note: Short the COM terminal with the R terminal.
[3-wire system connection]
7. SPECIFICATIONS
BS-633A BS-633AT
6 W (100 V line), 3 W (70 V line)
100 V line: 1.7 kΩ (6 W), 3.3 kΩ (3 W), 10 kΩ (1 W) 100 V line: 1.7 kΩ (6 W), 3.3 kΩ (3 W)
70 V line: 1.7 kΩ (3 W), 3.3 kΩ (1.5 W), 10 kΩ (0.5 W) 70 V line: 1.7 kΩ (3 W), 3.3 kΩ (1.5 W)
91 dB at 1 W, 1 m (500 – 5,000 Hz, pink noise)
120 – 15,000 Hz (at 20 dB below peak)
12 cm (5") cone-type
600 V vinyl-insulated cable (IV wire or HIV wire), Solid wire: ш0.8 – ш1.6 mm (equivalent to AWG 20 – 14),
7-core twisted wire: 0.75 – 1.25 mm
2 (equivalent to AWG 18 – 16)
Push-in connector (bridging terminal)
–
3 W: OFF, 1 (–12 dB), 2 (–6 dB), 3 (0 dB)
6 W: OFF, 1 (–13 dB), 2 (–7 dB), 3 (0 dB)
–10°C to +50°C (14°F to 122°F)
Case: ABS resin, off white, Rear board: hard board
173 (w) x 195 (h) x 101 (d) mm or 6.81" x 7.68" x 3.98" (excluding the attenuator in the case of BS-633AT)
Front fixing hole spacing: 184 mm (7.24"), Rear hook hole spacing: 120 mm (4.73")
780 g (1.72 lb) 810 g (1.79 lb)
Tapping screw 4 x 16 ...... 2, Tapping screw 4 x 35 ......... 2
Model No.
Rated Input
Rated Impedance
Sensitivity
Frequency Response
Speaker Component
Usable Cable
Connection
Attenuation Level
Operating Temperature
Finish
Dimensions
Wall Mounting Dimensions
Weight
Accessories
Note: The design and specifications are subject to change without notice for improvement.
533-06-157-6A
URL: http://www.toa.jp/