The CM-CU1 offers the same high quality, robust specification as the CM-CU21, tailored to single commentator applications. It provides a fully featured commentator position and a line-level input. The unit has an individual commentator output, with an additional output providing a mix of commentator and line input audio. A limit indicator on the main panel shows when the adjustable limiter on the main output is active, and a bright 21 segment LED PPM meter, which can be disabled, shows the main output level. The line input can be configured to remain present at the mix output even if the commentator is off air, making it useful for routing crowd effects or pre-recorded material to the programme feed. Its presence in the commentator’s headphones is also configurable to suit the application.
Product Features
Commentator position with individual output; plus main mix output.
Line input with configurable output and headphone presence.
Talkback outputs selectable by the commentator, with built in limiter and adjustable gain.
5 Return audio circuits that are routed to headphones along with the commentator input. Any source can be individually level controlled and sent to left, right or both ears.
A wide input gain range and switchable phantom power allows support of a variety of microphone types including low output ribbon, headsets and high output phantom powered microphones.
User preset adjustable limiter on main output with limit activity indication.
Built in line-up tone for initial cabling checks.
21 Segment LED PPM meter showing main output level.
Transformer balanced inputs & outputs.
Fitted formica ‘Sharpie’ designation strips.
Robust mechanical design with protection for potentiometer knobs.
Universal AC mains, or 12-24 volt DC power.
Typical Applications
Used in sports grounds and arenas by commentators to produce commentary & to hear talkback.
Product Category
Analogue Commentary
Technical Specifications
Microphone Input
Gain Range: +20dB to +86dB
Maximum Input Level: -6dBu
Equivalent Input Noise: 130dB Ref. 80dB gain with
Equivalent Input Noise: 150Ω termination
Equivalent Input Noise: 128dB Ref. 50dB gain with
Equivalent Input Noise: 150Ω termination
C.M.R.R.: >60dB
Frequency Response: ±0.5dB 20Hz to 22kHz
Frequency Response: Ref 50dB gain @ 1kHz
Electronically Balanced Line Input
Gain Range: -83dB to +10dB
Maximum Input Level: +25dBu
C.M.R.R.: >70dB
Frequency Response: ±0.2dB 20Hz to 22kHz
Frequency Response: Ref 0dBu @ 1kHz
Transformer Balanced Monitor Inputs
Gain Range: -66dB to +11dB measured @ Headphone output
Maximum Input Level: +21dBu
C.M.R.R.: >55dB
Frequency Response: ±0.5dB 20Hz to 22kHz
Frequency Response: Ref 0dBu @ 1kHz
Transformer Balanced Mix Output
Maximum Output Level (Limiter Off): +24dBu
Frequency Response: ±0.5dB 20Hz to 22kHz
Frequency Response: Ref 0dBu @ 1kHz
Noise: -94dB Average weighting
Noise: Ref +8dBu
THD & N: <0.02% Ref. 1kHz @ +8dBu
THD & N: <0.065% Ref. 1kHz @ +18dBu
1% Distortion Point: +18dBu @ 24Hz
Transformer Balanced Talkback Outputs
Maximum Output Level Limited: +8dBu
Frequency Response: ±0.5dB 20Hz to 22kHz
Frequency Response: Ref 0dBu @ 1kHz
Noise: -94dB Average weighting
Noise: Ref +8dBu
THD & N: <0.02% Ref. 1kHz @ +8dBu
Gain Adjustment: 0dB to +12dB
Electronically Balanced Comm Output
Maximum Output Level: +25dBu
Frequency Response: ±0.2dB 20Hz to 22kHz Ref 0dBu @ 1kHz
Noise: -98dB Average weighting Ref+8dBu
THD & N: <0.002% Ref. 1kHz @ +8dBu
Headphone Output
Gain Range: -66dB to +11dB
Maximum Output Level: +19dBu
Frequency Response: ±0.5dB 20Hz to 22kHz Ref 0dBu @ 1kHz
Noise: -85dB Average weighting Ref +8dBu
THD & N: <0.005% Ref. 1kHz @ +8dBu
Main Panel Operational Controls & Indicators
On-Air Button: Illuminated button with latching action
Talkback A, B, C & D Buttons: Illuminated buttons with selectable momentary and/or latching action
