Toa Electronics A-9120SM2 Modular Amplifier

Toa Electronics A-9120SM2 Modular Amplifier

Toa Electronics A-9120SM2 Modular Amplifier

B&H # TOA9120SM2CU MFR # A-9120SM2 CU

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Toa Electronics A-9120SM2 overview

  • 1Description

The A-9120SM2 Modular Amplifier from Toa Electronics is designed to be used in conjunction with optional Toa modules and can be configured for up to 8 inputs and 8 outputs. 9000 series modules as well as existing 900 series input modules can be used with the A-9120SM2. Its 120 W power amplifier allows it to individually perform multi-origin broadcasts. It is equipped with signal processing and control functions necessary for sound reinforcement, permitting all parameters to be set using the mixer. Settings data can be stored inside the unit and called up using the keys on the front panel.

In the Box
Toa Electronics A-9120SM2 Modular Amplifier
  • Power Cord - 6.56' (2 m)
  • Rack Mounting Bracket
  • Bracket Mounting Screw
  • Blank Panel
  • Blank Panel Mounting Screw
  • Removable Terminal Plug (3-Pins)
  • Removable Terminal Plug (7-Pins)
  • Removable Terminal Plug (14-Pins)
  • Limited 5-Year Warranty
  • Table of Contents
    • 1Description

    Toa Electronics A-9120SM2 specs

    Power Source 120 V AC, 60 Hz
    Power Consumption 150 W
    Rated Output 120 W
    Audio Input Max. 8 channels, modular construction (modules optional)
    Power amplifier input: 0 dB(*1), 10 kΩ, RCA pin jack
    Audio Output Preamplifier output 1: 0 dB(*1), 300 ohm, unbalanced, RCA pin jack

    Preamplifier output 2: 0 dB(*1), 600 ohm, balanced, removable terminal block (3 pins)

    Speaker output: Removable terminal block (7 pins)

    (Direct) 120 W, 4 ohm, unbalanced

    (Transformer) 120 W, 8 ohm 25 V & 70 V, balanced


    Module Slot Analog Input (slot 1 - 8): -10 dB(*1), 10 kohm, unbalanced

    Digital Input (slot 1 - 4): 24 bit/48 kHz

    MIX Output (slot 1 - 8): -14 dB(*1), 330 ohm (CH 1 prefader output), unbalanced

    Digital Output (slot 5 - 7): 24-bit/48 kHz

    Power Supply (slot 1 - 8): +24 V, -24 V, +6 V DC



    Reference Level -20 dBFS
    Power Bandwidth (Direct) 20 Hz - 20 kHz, 0.02 % THD
    (Transformer) 50 Hz - 20 kHz, 0.5 % THD
    Frequency Response Power Amplifier Section: 20 Hz - 20 kHz, +0, -1 dB
    Analog Input Module to Speaker Output: 20 Hz - 20 kHz, +1, -3 dB
    Total Harmonic Distortion Power amplifier section: 0.008 % (22 kHz LPF, 1 kHz, rated power)

    Analog input module to speaker output: 0.008 % (22 kHz LPF, 1 kHz, rated power)


    S/N Ratio At Input short, 20 Hz - 20 kHz, set to ALL FLAT or OFF setting

    Output Volume Min.: 90 dB (preamplifier output)

    Output Volume Max.: 61 dB (preamplifier output, Input 1 volume: 0 dB, Other Inputs: OFF)

    Power Amplifier Section: 110 dB


    Cross Talk 64 dB or more (at 20 kHz)
    Tone Control Bass: ±12 dB (at 100 Hz)

    Treble: ±12 dB (at 10 kHz)


    Parametric Equalizer 10 bands, Frequency: 20 Hz - 20 kHz, 31 points, Variable Range: ±12 dB, Q: 0.3 - 5
    Speaker Equalizer 10 (setup software has 30 TOA speaker presets)
    High-Pass Filter -12 dB/oct, Variable Frequency Range: 20 Hz - 20 kHz, 31 points
    Low-Pass Filter -12 dB/oct, Variable Frequency Range: 20 Hz - 20 kHz, 31 points
    Compressor Depth: 1 - 5
    Delay 0 - 40 ms (1 ms steps), maximum 40 ms (CH 1 + CH 2), mixer mode only
    Scene/Event Memory 32
    Advanced Functions Key lock function
    Control I/O RS-232C(*2), D-sub connector (9 P, female)

    Control Input: 4 inputs, no-voltage make contact input, open voltage: 3.3 V DC

    Short-Circuit Current: 1 mA or less, removable terminal block (14 pins)

    Control Output: 4 outputs, open collector output, withstand voltage: 27 V DC

    Control Current: 50 mA, removable terminal block (14 pins) (14 pins)

    Remote Volume: 2 channels, connect a 10 kΩ/linear taper variable resistor or input the DC voltage of 0 to +10 V, removable terminal block (14 pins)


    Operating Temperature -10 ℃ to +40 ℃ (14 ゜F to 104 ゜F)
    Operating Humidity 35% to 80% RH (no condensation)
    Finish Panel: Aluminum, hair-line, black

    Case: Surface-treated steel plate, black, paint


    Dimensions 16.54 × 4.24 × 13.98" (420 × 107.6 × 355 mm)
    Weight 28.66 lb (13 kg)
    Packaging Infosawdcvtswsxsyccx
    Package Weight 34.4 lb
    Box Dimensions (LxWxH) 21.26 x 17.717 x 7.283"

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