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A-1803 Mixer Power Amplifier (ER version)


A-1803 (30W):

Multi-purpose, multi-function mixer/power amplifiers specifically designed for maximum versatility and cost-effective high-performance are ideal units for any PA requirement in locations such as schools and offices and other intermediate size environments. A choice of different power outputs are offered as well as functions such as paging and dual zone coverage.
Power Source AC mains 50/60Hz, or 24V DC (M4 screw terminal)
Output 30W
Power Consumption AC operation: 80W (rated output), 37W (EN60065)
24V DC operation: 2.0A (rated output), 1.0A (EN60065)
Frequency Response 50 - 20,000Hz ±3dB
Distortion Under 2% at 1kHz, rated power
Input MIC 1: -60dB*, 600Ω, electronically-balanced, combined type of XLR-3-31 equivalent and phone jack DIN socket (5 pins)
MIC 2, 3: -60dB(*1), 600Ω, electronically-balanced, combined type of XLR-3-31 equivalent and phone jack
AUX 1(MOH): -20dB*, 10kΩ, unbalanced RCA pin jack
AUX 2: -20dB(*1), 10kΩ, unbalanced, RCA pin jack
AUX 3: -20dB(*1), 10kΩ, unbalanced, RCA pin jack combined type of XLR-3-31 and phone jack
TEL(*2): -20dB*1, 10kΩ, electronically-balanced, M3 screw terminal
Output REC: 0dB(*1), 600Ω, unbalanced, RCA pin jack
LINE 1,2(*3): 0dB(*1), 600Ω, unbalanced, RCA pin jack
MOH: 0dB(*1), 600Ω transformer balanced, M3 screw terminal
2 zone, high impedance (100V line/330Ω), individual selector switch, M4 screw terminal
High impedance (100V line/330Ω),M4 screw terminal
Low impedance (4 - 16Ω), M4 screw terminal
(Both Low and High impedance terminals cannot be used at the same time.)
Phantom Power ON or OFF for each MIC 1 - 3 with switch setting
S/N ratio
(Band Pass: 20 - 20,000Hz)
Over 100dB (Master volume: min)
Over 76dB (Master volume: max)
Over 60dB (MIC 1 - 3))
Over 76dB (AUX 1 - 3)
Over 90dB (TEL)
Control Input Bass: ±10dB at 100Hz, Treble: ±10dB at 10kHz
TEL: No-voltage make contact input, open voltage: 24V DC, short-circuit: under 5mA, M3 screw terminal
EMERGENCY (*4): No-voltage make contact input, open voltage: 24V DC, short-circuit: under 10mA, M3 screw terminal
Control Output Power remote: Open collector output, withstand voltage: 35V DC, control current: under 50mA, M3 screw 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 -10ºC - +40ºC
Finish Panel: ABS resin, black, hair line
Case: Steel plate, black
Dimensions 420 (W) x 107.7 (H) x 367 (D)mm
Weight 8.1kg
Accessory Power cord x 1,
Terminal block cover x 1,
Terminal block cover mounting screw x 2
Option Rack mounting bracket: MB-25B,
Volume control cover: YA-920,
Input transformer: IT-453A
Note* (*1) 0dB = 1V
(*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 unit's power (factory-preset) or OFF. (The OFF function needs internal modification.)




Contact Us
 Tel : 02-996-2636-9 หรือ 02-029-9470
 Mobile : 082-4500417 - 8
 E-mail :
 Line ID : @pathumdesign
 Wechat : Pathumdesign 
 Facebook Fanpage : Pathumdesign


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