TOA M-21S Microphone Input Module with Remote Volume Control for 900 Series Amplifiers, Removable Terminal Block

Microphone Preamplifier with Remote Volume Control

For balanced, low impedance mics. Allows remote control of input signal using an external potentiometer.

The M-21S is a microphone input module to be used in conjunction with the 900 series components and other TOA's equipment. It has a transformer balanced microphone input with screw terminals, remote volume control function, phantom power supply function, and gain and tone controls.

Specifications:

• Power Source: 24VDC (supplied from the main frame)
• Current Consumption: 30mA
• Input Sensitivity: -60dB (rated output: -20dB), adjustable: -72 to -52dB
• Input Impedance: 600Ω, balanced transformer-isolated
• Frequency Response: 25Hz - 20kHz ±1.5dB
• Distortion: 0.05% or less (1kHz, output: 0 dB)
• Noise Level: -86dB (20Hz - 20kHz BPF), input equivalent noise: -126dB
• Phantom Power: +22VDC (active or disable selectable)
• Tone Control: 100Hz: 0 to -10dB, 10kHz: 0 to -10dB
• Remote Control Range: 0 to -55 dB
• Connector: 5 Screw terminals
• Dimensions: 35 (W) × 78 (H) × 88mm (D) (1.38 × 3.07" × 3.46")"
• Weight Max.: 90g (0.2lbs)
• Controls/Functions:
  • Gain Control
  • High and Low Cut Filters
  • Remote Volume Facility
  • Phantom Power
• Performance Input: 600tb
• Gain (Adjustable): 32 ~ 52dB
• Maximum Input: -14dB
• Signal to Noise (S/N): -126dBu (EIN 200Ω)