Sonifex CM-CU1 Commentator Unit, 1 Commentator and Line Input

The CM-CU1 offers the same high quality, robust specification as the CM-CU21, with a feature set 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.

Key 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 and outputs
• Fitted formica ‘Sharpie’ designation strips
• Robust mechanical design with protection for potentiometer knobs
• Universal AC mains, or 12-24 volt DC power

Technical Specifications

Microphone Input
Gain Range
+20dB to +86dB
Maximum Input Level
-6dBu
Equivalent Input Noise
130dB Ref. 80dB gain with
150ohms termination
Equivalent Input Noise
128dB Ref. 50dB gain with
150ohms termination
C.M.R.R.
>60dB
Frequency Response
-0.5dB 20Hz to 22kHz
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
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
Ref 0dBu @ 1kHz
Transformer Balanced Mix Output
Maximum Output Level (Limiter Off)
+24dBu
Frequency Response
-0.5dB 20Hz to 22kHz
Ref 0dBu @ 1kHz
Noise
-94dB Average weighting
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
Ref 0dBu @ 1kHz
Noise
-94dB Average weighting
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
Headphone Monitor Controls
Input source level adjustment potentiometers
Headphone channel selection switches
Line Input Level
line input mode level potentiometer
PPM Meter
21 segment display showing mix output level, brightness level Is selectable
Limit LED
Indicates main output limiter is active, colour & brightness level is selectable
Power LED
Indicates operating mode; normal or setup
Front Panel Operational Controls
Phantom
Switch to enable 48V microphone phantom power
Mic Gain
Microphone gain potentiometer and range select switch selects +20dB to +56dB or +50 to +86dB
Rear Panel Operational Controls
On Air Lock
Switch to prevent On Air control from being deactivated
Momentary push-button to override on air lock
T/B Gang
Switch to link operation of talkbacks A, B, C & D
T/B Gain
0dB to +12dB
Limiter
Switch to enable limiter on mix output
Limit level adjustment potentiometer
Test Tone
Switch to enable 1 kHz line-up tone
Configuration Options Accessible via Setup Mode
On Air Control Mode
Disabled, normal or permanently on
Talkback Button Action
Momentary, latching or both
Headphone Routing
Line-level input permanently routed/routed if on air to Commentator headphones
Commentator input permanently routed/not routed to headphone monitors
Line Level Input Routing
Line-level input permanently routed/not routed/routed if on air to main output
Display Preferences
Limit LED colour and brightness
Button LED brightness
PPM meter LED brightness/disable
Permanent Option Backup
Save/load options to/from Permanent backup or return to factory defaults
Front Panel Connections
Headphone Output
1 x locking headphone jack socket
Microphone Input
1 x XLR-3 pin latching female
Line Input
1 x XLR-3 pin latching female
Rear Panel Connections
Prog, A, B, C & D Inputs
5 x XLR-3 pin female (transformer balanced)
Comm Output
1 x XLR-3 pin male (electronic balanced)
Talkback A, B, C & D Outputs
4 x XLR-3 pin male (transformer balanced)
Mix Output
1 x XLR-3 pin male (transformer balanced)
GPIO Port
15-way ‘D’-type socket
Mains Input
Universal filtered IEC, continuously
rated 85-264VAC, 47-63Hz, 10W
Fuse Rating
Anti-surge fuse 1A 20 x 5mm
DC Input
XLR-4 pin male 12V DC, 650mA Typical, 850mA Maximum
24V DC, 325mA Typical, 425mA Maximum
Earth Point
M4 stud.
Physical
Dimensions (Raw)
270mm (W) x 230mm (D) x 70mm (H - front) x 95mm (H - rear)
10.6” (W) x 9” (D) x 2.8” (H - front) x 3.7” (H - rear)
Dimensions (Boxed)
380mm (W) x 350mm (D) x 200mm (H)
15” (W) x 13.8” (D) x 7.8” (H)
Weight
Nett: 3.3kg Gross: 4.3kg
Nett: 7.3lbs Gross: 9.4lbs