TOA / A-3512D PA amplifier 120W

The TOA A-3512D is a PA amplifier with four microphone inputs, one auxiliary input, priority functionality, and a two-zone selector. It is ideal for announcement and background music broadcasting in schools, offices, supermarkets, and other similar establishments.

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

120 W

Power Consumption/Current

175 W (at rated output), 48 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 more

(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 83 Ω) Detachable terminal block (6P)

(ZONE 1/ZONE 2 are selectable, maximum 120 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 °C to +40 °C

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

4.9 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