High performance, Unidirectional pre-amplified microphone for high ceiling and high background noise applications. Flush mount Pre-amplifier mounts on ceiling and microphone hangs 6-25' down. Built in limiter circuit automatically lowers the output level during loud sound intervals. Selectable lo-cut and hi-cut filters significantly reduce background noise. Flexible plastic plate mounts flush or on a single gang electrical box.

Features:

• Uni-directional 25' pickup pattern with reduced (-6db) sensitivity on all sides.
• Low noise MOSFET pre-amplifiers.
• 500Hz-13Khz Frequency response.
• Jumper selectable hi-cut/lo-cut filters limit frequency response to up to 900 to 6Khz significantly reducing background noise.
• Jumper selectable volume range: "Line level" (0db) or "Microphone level" (-30db) Adjustable gain in both volume ranges.
• -54db sensitivity, 60db S/N ratio
• Peak Limiter .5sec response time 100 Ohm unbalanced output.
• 3 position Euro-style connector makes cable termination fast and clean.
• 6' cord with RCA end plug.
• Power: 12 to 24VDC @ 10mA.
• On-board voltage regulator and RFI filtering.
• Industrial temperature range: -40C to 105C
• Dimensions Plate: L 4.5” W 2.7” H 1.0” Dimensions Microphone:D .75" L 4.1"
• Weight: 0.1lbs

Includes:

• SM1-HD Microphone
• SM1-PAS Pre-amplifier Mounting screws
• Installation instructions.

Options

• SPECIFY: Cord length. Default is 6’.

Wiring requirements:

• 2 conductor shielded (with drain wire) 22 gauge stranded. Max cable length 1500’