TOA / A-3548D PA amplifier 480W

The A-3548D is a PA amplifier. It is equipped with four microphone inputs and one spare input. It uses a PCF circuit. It is ideal for paging and background music broadcasting in schools, offices, supermarkets, etc.

This PA amplifier has four microphone inputs, one spare input, as well as a built-in priority function and two-channel zone selector. It also uses a PFC circuit. It is ideal for paging and background music broadcasting in schools, offices, supermarkets, etc. ■Power supply　AC 100 V 50/60 Hz ■Rated output　480 W ■Power consumption/current　636 W (at rated output), 113 W (according to Electrical Appliance and Material Safety Act), 200 mA or less (power switch OFF) ■Frequency response　50 Hz to 20 kHz　±3 dB (at 1/8 rated output) ■Distortion rate　1% or less (1 kHz rated output), 20 kHz LPF (AUX-0025) ■Sound quality adjustment　±10 dB or more at 100 Hz, 10 kHz ■Signal-to-noise ratio　Master volume (min): 88 dB or more　Master volume (max): 76 dB or more　INPUT 1 to 4: 55 dB or more　INPUT 5: 72 dB or more　(JIS-A) ■Audio input　INPUT 1, 2: -60 INPUT 3: -60 dB (*1) (mic) / -20 dB (*1) (line) switchable, 600 Ω electronically balanced, detachable terminal block (5 pins) / φ6.3 mm phone jack (2 pins) * Phantom power for microphones is DC 24 V (ON/OFF can be turned on/off with a switch) INPUT 4: -60 dB (*1) (mic) / -20 dB (*1) (line) switchable, 600 Ω electronically balanced, φ6.3 mm phone jack (2 pins) INPUT 5: -20 dB (*1) 10 kΩ unbalanced, RCA pin jack x 2 Power amp: 0 dB (*1) 600 Ω unbalanced RCA pin jack ■Audio output Speaker: Low impedance (4 to 16 Ω)/High impedance (Direct, ZONE 1/ZONE 2: 100 series/composite 21 Ω) Removable terminal block (6 pins) (ZONE 1/ZONE 2 is selectable, maximum 480 W per zone) Recording: 0 dB (*1) 600 Ω unbalanced RCA pin jack Line 1, 2: 0 dB (*1) 600 Ω unbalanced RCA pin jack (*Can be linked with zone selection) ■Control input 2 systems, no-voltage make contact, open voltage: DC 35 V or less, short-circuit current: 10 mA or less, removable terminal block (5 pins) Zone control input: No-voltage make contact, open voltage: DC 35 V or less, short-circuit current: 10 mA or less, removable terminal block (4P) ■Control output Remote output: Open collector output, Withstand voltage: DC 30 V or less, Allowable current: 25 mA or less, Removable terminal block (4P) Emergency output: Open collector output, Withstand voltage: DC 30 V or less, Allowable current: 25 mA or less, Removable terminal block (4P) Zone control output: Open collector output (polarized), Withstand voltage: DC 30 V or less, Allowable current: 25 mA or less, Removable terminal block (4P) ■Indications 5-point LED level meter, power indicator, priority broadcast indicator, emergency broadcast indicator, temperature protection indicator, overcurrent protection indicator, zone 1 indicator, zone 2 indicator ■Operating temperature range -10°C to +40°C ■Operating humidity range 85 % RH or less (but no condensation) ■Finish 　Panel: ABS resin, black (approximate color to Munsell N1.0) 　Case: Surface-treated steel plate, black (approximate color to Munsell N1.0), painted ■Dimensions 　420 (W) x 96.1 (H) x 313.1 (D) mm ■Weight　5.1 kg ■Accessories 　Power cord (2 m)... 1, detachable terminal plug for audio input (3.81 mm, 5P)... 2, detachable terminal plug for control I/O (3.81 mm, 4P)... 2, detachable terminal plug for remote control (3.5 mm, 4P)... 1, detachable terminal plug for speaker output (5 mm, 6P)... 1, volume cover... 4 ■Optional items　Rack mounting bracket: MB-23B, Ventilation panel: PF-013B　(*1) 0 dB = 1 V