TOA / A-3548D PA amplifier 480W

The A-3548D is a PA amplifier equipped with four microphone inputs and one auxiliary input. It employs a PCF circuit. Ideal for announcement and background music broadcasting in schools, offices, supermarkets, etc.

This PA amplifier features four microphone inputs, one auxiliary input, priority functionality, and a two-zone selector. It also employs a PFC (Power Frequency Control) circuit. Ideal for paging and background music broadcasting in schools, offices, supermarkets, and other similar settings.




■Power Supply

AC 100 V 50/60 Hz

■Rated Output

480 W

■Power Consumption/Current

636 W (at rated output), 113 W (according to the Electrical Appliances and Materials Safety Act), 200 mA or less (when power switch is OFF)

■Frequency Response

50 Hz to 20 kHz ±3 dB (at 1/8 rated output)

■Distortion

1% or less (at 1 kHz rated output), 20 kHz LPF (AUX-0025)

■Tone Adjustment

±10 dB or more at 100 Hz and 10 kHz

■S/N Ratio

Master Volume (Minimum): 88 dB or more

Master Volume (Maximum): 76 dB or more

INPUT 1-4: 55 dB or more

INPUT 5: 72 dB or higher

(JIS-A)

■Audio Input

INPUT 1, 2: -60 dB (*1) (microphone) / -20 dB (*1) (line) Switchable, 600 Ω electronically balanced, detachable terminal block (5P) / φ6.3 horn jack (2P)

*Microphone requires phantom power DC 24V (ON/OFF switchable)

INPUT 3: -60 dB (*1) 600 Ω electronically balanced φ6.3 horn jack (2P)

INPUT 4: -60 dB (*1) (microphone) / -20 dB (*1) (line) Switchable, 600 Ω electronically balanced φ6.3 horn jack (2P)

INPUT 5: -20 dB (*1) 10 kΩ unbalanced RCA pin jacks x 2

Power Amplifier: 0 dB (*1) 600 Ω Unbalanced RCA pin jack

■Audio Output

Speaker: Low impedance (4-16 Ω) / High impedance (Direct, ZONE 1/ZONE 2: 100 series / Combined 21 Ω) Detachable terminal block (6P)

(ZONE 1/ZONE 2 are 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, voltage-free make contact, Open circuit voltage: DC 35 V or less, Short circuit current: 10 mA or less, Detachable terminal block (5P)

Zone Control Input: Voltage-free make contact. Open-circuit voltage: DC 35 V or less, Short-circuit current: 10 mA or less. Detachable terminal block (4P).

■Control Output

Remote Output: Open collector output. Withstand voltage: DC 30 V or less, Allowable current: 25 mA or less. Detachable terminal block (4P).

Emergency Output: Open collector output. Withstand voltage: DC 30 V or less, Allowable current: 25 mA or less. Detachable terminal block (4P).

Zone Control Output: Open collector output (with polarity). Withstand voltage: DC 30 V or less, Allowable current: 25 mA or less. Detachable terminal block (4P).

■Display

5-point LED level meter, power indicator light, priority broadcast indicator light, emergency broadcast indicator light, temperature protection indicator light, overcurrent protection indicator light, Zone 1 indicator light, Zone 2 indicator light

■Operating Temperature Range

-10 ℃ to +40 ℃

■ Operating Humidity Range

85% RH or less (non-condensing)

■ 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) × 96.1 (H) × 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 input/output (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 Accessories

Rack mount bracket: MB-23B

Ventilation panel: PF-013B

(*1) 0 dB = 1 V