TOA A-1803 CH User manual

TOA A-1803 CH User manual
 zd TOA PA AMPLIFIER A—1803(CH)
HDESCKIPTTON
Equipped with Priority function, Chime function, and 2 Zone selector switches, the A—1803 PA
Amplifier of 30 W is designed to suit the following PA system applications: Paging announcements,
intercommunications, BGM, and broadcasting in schools, offices, and Shops; ts power remote
control function, provided especially for use in conjunction with the P—1812 (optional), will turn
ON or OFF the P—1812s power.
BSPECIFICATIONS (x1) 0 dB = 1V
Power Source 220 V — 230 V AC, 50/60 Hz
24 V DC (M4 screw terminal)
Rated Output 30 W
Power /Current AC operation: 80 W (rated output), 37 W (EN60065),
Consumption 100 mA or less (when power switch is OFF)
24 V DC operation: 2.0 A (rated output), 1.0 A (EN60065)
Frequency Response 50 Hz — 20 kHz (+3 dB)
Distortion 2 % or less at 1 kHz, rated power
Input MIC 1: —60 dB(x1), 600 ©, electronically-balanced,
combined type of XLR-3-31 equivalent and phone jack, DIN socket (5 pins)
MIC 2 — 3: —60 dB(x1), 600 Q, electronically—balanced,
combined type of XLR-3-31 equivalent and phone jack
AUX 1 (MOH): —20 dB(+1), 10 k©@, unbalanced, RCA pin jack
AUX 2: —20 dB(x1), 10 kQ, unbalanced, RCA pin jack
AUX 3: —20 dB(x1), 10 kQ, unbalanced, combined type of XLR—3-31 and phone jack
TEL(*2): —20 dB(x1), 10 kQ?, electronically-balanced, M3 screw terminal
EMERGENCY: O dB(x1), 600 Q, unbalanced, M3 screw terminal
Output REC: 0 dB(*1), 600 Q, unbalanced, RCA pin jack
LINE 1, 2 (+3): 0 dB(x1), 600 Q, unbalanced, RCA pin jack
MOH: 0 dB(x1), 600 Q, transformer balanced, M3 screw terminal
SPEAKER SELECTOR: 2 zone, high impedance (100 V line/330 Q), individual selector switch,
M4 screw terminal
DIRECT SPEAKER OUT: High impedance (100 V line/330 Q), M4 screw terminal
Low impedance (4 — 16 Q), M4 screw terminal
(Both Low and High impedance terminals cannot be used at the same time.)
Phantom Power ON or OFF for each MIC1 — 3 with switch setting (+17 V DC)
S/N Ratio 100 dB or more (Master volume: min)
(Band Pass /6 dB or more (Master volume: max)
: 20 Hz — 20 kHz) 60 dB or more (MIC 1 — MIC 3)
/6 dB or more (AUX 1 — AUX 3)
90 dB or more (TEL)
96 dB or more (EMERGENCY)
Tone Control Bass: £10 dB at 100 Hz, Treble: £10 dB at 10 kHz
Control Input TEL: No-voltage make contact input, open voltage: 24 V DC, short-circuit: 5 mA or less,
M3 screw terminal
EMERGENCY(+4): No-voltage make contact input, open voltage: 24 V DC,
short—circuit: 10 mA or less, MS screw terminal
Control Output Power remote: Open collector output, withstand voltage: 35 V DC,
control current: 50 mA or less, M3 screw terminal
Chime 1-tone, 2-tone, or ascending 4-tone chime, or None selectable with switch setting,
activated at MIC 1's DIN or CONTROL TEL terminal.
Indicator 5 point LED output level meter, Power indicator LED, Zone indicator LED, Emergency LED,
TEL LED
Priority EMERGENCY: Overrides other inputs
TEL: Overrides other inputs except EMERGENCY’, ON/OFF selectable with switch setting
MIC 1: Overrides other inputs except EMERGENCY & TEL”,
ON/OFF selectable with switch setting
Operating Temperature —10 °С to +40 °C
Finish Panel: ABS resin, black, hairline
Case: Steel plate, black
Dimensions 4720 (W) X 107.7 (H) X 367 (D) mm
Weight 8.1 kg
Accessory Power cord 1, Terminal block cover 1, Terminal block cover mounting screw = 2
Option Rack mounting bracket: MB—235B
Volume control cover: YA—920
Input transformer: 11—455A
[Note] Distance between barriers on the above screw terminals: M3 — 7 mm, M4 -- 9 mm
(*2) Can be transformer—balanced with the addition of optional IT—-453A input transformer.
(*3) LINE 1 and LINE 2 outputs can be interlocked with ZONE 1 and ZONE 2 speaker selectors, respectively.
(This function needs internal modification.)
(*4) Operation when activated can be selected from the following: Turning ON the units power (factory—preset) or OFF.
(The OFF function needs internal modification.)
Na J
04B TOA Corporation DWG No: GA—03CB1-1
048
zd TOA
BAPPEARANCE
PA AMPLIFIER
A—1803(CH)
A 0.2A 50/60Hz ©)
INPUT ==, ——
— — TT I Moon TN
REMOTE OUT CONTROL
MOH OUT EMERGENCY — TEL PAGING
TOTAL IMPEDANCE 3300
DIRECT ZONE2 ZONE1
SEE le
MUTE BY T CHIME TN
MUTE BY Me E SIG Г
РНАМТОМ | SW2 | SW3 |
4 TONE | OFF | OFF
e ME 2 2 TONE | ON | OFF
1 TONE | OFF | ON
NONE | ON | ON
Rear View
420
MIC 1 VA 7,
8
® 3 $
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= ©
9
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$ 5 ®
BASS E
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RX) *,
| ® 3 $
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> =
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# 3 ®
VA >
AUX 1 AUX 2 AUX 3
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10
Front View
MASTER
si ig
EMERGENCY
[mm O3 =
9-6
o POWER Y, [~~
— E ©
om
-m ON
[== -24 a O:: O
—
TOA PA AMPUFIER model A-1803
— Y
18.5
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UNIT:mm SCALE:1/3
Side View
TOA Corporation
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DWG No: GA—03CC1
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