TOA M-01F 900 Series Microphone Input Module with Phantom Power, XLR-F

The TOA M-01F is the workhorse microphone preamplifier module of the 900 Series family. It converts one input port of a TOA mixer/amplifier into a fully featured mic channel: a transformer-balanced 600-ohm input on a female XLR jack, 32 to 52 dB of adjustable gain, switchable +22 V phantom power for condenser microphones, and low- and high-cut tone controls for taming room rumble and sibilance at the source. Because everything happens on the module, the channel is trimmed with a screwdriver during commissioning and then left alone, which is exactly what installed paging and background music systems need.

Compatibility is broad across the TOA line. The M-01F seats in any of the eight input ports of the A-903MK2, A-906MK2 and A-912MK2 mixer power amplifiers and the M-900MK2 mixer preamplifier, in the W-906A and W-912A in-wall mixer power amplifiers, and in the two dedicated 900 Series module slots on the 800D Series digital mixer amplifiers A-812D, A-824D and A-848D. TOA's 9000M2 Series amplifiers also accept existing 900 Series input modules, so an M-01F carries forward into newer racks rather than being stranded with the frame it was bought for. The module draws its 24 V DC operating power from the host main frame, so there is nothing to wire beyond the microphone cable.

Performance is quiet enough for critical announcement duty: distortion is 0.05 percent or less at 1 kHz, noise sits at -86 dB with an input-equivalent noise figure of -126 dB, and response spans 25 Hz to 20 kHz. The female XLR jack accepts a standard microphone cable directly, which makes the M-01F the default choice for lectern, paging, gooseneck and handheld microphone inputs in schools, houses of worship, transit terminals, hospitals and industrial plants running the TOA 900 Series platform. If you need the same channel with a male XLR, specify the M-01M; if you need built-in level compression, specify the M-61F.

Features

• Microphone input module for balanced, low-impedance microphones on TOA 900 Series hosts
• Transformer-balanced 600-ohm input with female XLR connector
• Selectable +22 V DC phantom power for condenser-type microphones
• High-cut and low-cut filters for on-module tone shaping
• Adjustable gain from 32 to 52 dB to match any microphone's output
• Input-equivalent noise of -126 dB for quiet, low-hiss paging and announcement channels
• Powered from the host frame's 24 V DC rail - no external supply required
• Fits A-903MK2, A-906MK2, A-912MK2, M-900MK2, W-906A, W-912A, the 900 Series module slots of the A-812D / A-824D / A-848D, and 9000M2 Series amplifiers

Technical Specifications

• Module type: Balanced microphone preamplifier input module (900 Series)
• Power supply: 24 V DC (supplied from the main frame)
• Current consumption: 9 mA
• Input sensitivity: -60 dB (0 dB = 1 V), balanced transformer-isolated
• Input impedance: 600 ohms, balanced
• Frequency response: 25 Hz - 20 kHz, ±2.0 dB
• Distortion: 0.05% or less (1 kHz, output 0 dB)
• Noise level: -86 dB (20 Hz - 20 kHz BPF); input-equivalent noise -126 dB
• Gain: 32 - 52 dB
• Tone control: 100 Hz, 0 to -10 dB; 10 kHz, 0 to -10 dB
• Phantom power: +22 V DC (active or disabled, selectable)
• Connector: Female XLR (XLR-3-31 equivalent)
• Module dimensions: 35 (W) x 78 (H) x 88 (D) mm / 1.38" x 3.07" x 3.46"
• Module weight: Max. 110 g (0.24 lb)
• Shipping weight: 0.2646 lb
• Shipping carton: 3.54" x 3.74" x 1.57"

What's Included

• 1x TOA M-01F microphone input module with female XLR connector
• No additional accessories are specified by TOA for this module