TOA / A-3648D PA amplifier 480W

Equipped with 4 microphone inputs, 3 auxiliary inputs, and a 2-channel zone selector. Uses a PFC circuit. In addition to individual volume adjustment for each input, it also has a priority broadcast function, chime function, signal processing function, and status confirmation function.

This PA amplifier has four microphone inputs, three spare inputs, and a two-channel zone selector. In addition to individual volume adjustment for each input, it is equipped with a priority broadcast function, a chime function, a signal processing function, and a status check function. It also uses a PFC circuit. It is ideal for paging and background music broadcasting in schools, offices, supermarkets, etc.


■Power supply
AC100V 50/60Hz
■Rated output
480W
■Power consumption/current
636W (at rated output), 113W (according to Electrical Appliance and Material Safety Law), 200mA or less (when power switch is OFF)
■Frequency response
50Hz to 20kHz ±3dB (at 1/8 rated output)
■Distortion rate
1% or less (1kHz rated output), 20kHz LPF (AUX-0025)
■Sound quality adjustment
±10dB or more at 100Hz, 10kHz
■S/N ratio
Master volume (min): 88dB or more
Master volume (max): 76dB or more
INPUT1 to 6: 55dB or more
INPUT7: 72dB or more
(JIS-A)
■Audio input
INPUT1, 2: -60 dB (*1) (microphone) / -20 dB (*1) (line) switchable 600 Ω electronically balanced detachable terminal block (3P)

* Phantom power DC 24 V for microphones (can be turned on/off with a switch)

INPUT 3, 4: -60 dB (*1) 600 Ω electronically balanced detachable terminal block (3P)

* Phantom power DC 24 V (can be turned on/off with a switch)

INPUT 5, 6: Microphone (BUS1) / Line (BUS2) switchable

Microphone: -60 dB (*1) 600 Ω electronically balanced detachable terminal block (3P)

Line: -20 dB (*1) 10 kΩ unbalanced RCA pin jack x 2

INPUT 7: -20 dB (*1) 10 kΩ unbalanced RCA pin jack x 2

Power amplifier: 0 dB (*1) 600 Ω unbalanced RCA pin jack

■Input bus

INPUT 1-4: BUS1

INPUT 5, 6: BUS1/BUS2 switchable

INPUT 7: BUS2

■Audio output

Speaker: Low impedance (4-16 Ω)/High impedance (Direct, ZONE 1/ZONE 2: 100 system/synthetic 21 Ω) Removable terminal block (6P)

(ZONE 1/ZONE 2 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
4 systems No-voltage make contact Open voltage: DC35V or less, short circuit current: 10mA or less
Removable terminal block (4P)
Remote volume: Removable terminal block (4P)
Zone control input: No-voltage make contact Open voltage: DC35V or less, short circuit current: 10mA or less Removable terminal block (4P)
■Control output
Remote output: Open collector output Withstand voltage: DC30V or less, allowable current: 25mA or less Removable terminal block (4P)
Emergency output: Open collector output Withstand voltage: DC30V or less, allowable current: 25mA or less Removable terminal block (4P)
Zone control output: Open collector output Withstand voltage: DC30V or less, allowable current: 25 mA or less, removable terminal block (4P)
■Chime
1 tone, 2 tones, 4 tones up or no chime (selectable by switch)
■Display
5-point LED level meter, power indicator, network connection confirmation indicator, priority broadcast indicator, emergency broadcast indicator, temperature protection indicator, overcurrent protection indicator, CPU operation indicator, abnormality indicator, zone 1 indicator, zone 2 indicator
■Operating temperature range
-10 ℃ to +40 ℃
■Operating humidity range
85% RH or less (no condensation)
■Finish
Panel: ABS resin, black (approximate Munsell N1.0 color)
Case: Surface-treated steel plate, black (approximate Munsell N1.0 color), painted
■Dimensions
420 (W) x 96.1 (H) x 313.1 (D) mm
■Weight
5.2 kg
■Accessories
Power cord (2 m)...1, Detachable terminal plug for audio input (3.81 mm, 3P)...6, Detachable terminal plug for control input/output (3.81 mm, 4P)...4, Detachable terminal plug for remote control (3.5 mm, 4P)...2, Detachable terminal plug for speaker output (5 mm, 6P)...1, Volume cover...4
■Optional items
Rack mount bracket: MB-23B
Ventilation panel: PF-013B