PA Conference Sound System CM-4000
The Ahuja CM-4000 Conference System provides the much required sound reinforcement at meetings while eliminating problems of poor intelligibility and acoustic feedback. The system is ideal for use in a variety of applications in Boardrooms, Large Conference Halls as well as open conferencing in Convention Centres.
CMA-4400
50 WATTS
Central Mixer Amplifier
Central Mixer Amplifier
- Highly sensitive 16″ long gooseneck microphone for comfortable sharing by two delegates.
- Bright and clear ring LED indicator.
- Compact and attractive die cast aluminium cabinet in a unique profile.
- Headphone output available from each unit.
- Automatic Mic Off feature in Delegate units.
- Unique Send/Return facility through a stereo jack in Central Amplifier CMA-4400.
- Chairman Unit has Priority Switch.
- Record & playback the messages with the Secretary Unit.
- AC Mains & 24V DC operation.
- Central Amplifier is 19″ rack mountable.
- Three Mic inputs and one Aux input for various user applications.
- 50W PA Amplifier for adequate sound reinforcement.
- System expansion possible through Conference Expansion Unit CMB-4500.
- Conference System can be installed in a bus bar arrangement by using Junction Boxes CB-45.
| Line Output | 17.5V DC/3A Max.; -34dBV (20mV) |
| Power Output | 50W RMS at 2% THD, 90W Max. |
| Inputs | 1×Mic 1.0mV/2kΩ (Balanced), 2×Mic 0.65mV/4.7kΩ (Unbalanced), 1×Aux 100mV/470kΩ (Unbalanced) |
| Frequency Response | 60-14,000Hz (± 3dB) |
| S/N Ratio | > 60dB |
| Tone Controls | Bass: -10dB at 100Hz, Treble: -10dB at 10kHz |
| Preamp / Rec Output | 200mV/600Ω |
| Line Output | 1V/1kΩ |
| Send Output | 200mV/600Ω |
| Return Input | 200mV/10kΩ |
| Speaker Output | 4Ω, 8Ω, 16Ω, 70V & 100V |
| Power Requirement | AC: 220-240V, 50/60HZ, DC: 24V (2×12V Car Battery) |
| Power Consumption | 250VA |
| Protections | AC Fuse 1×3 Amp , DC Fuse 2×10 Amp |
| Dimensions | W482 × H88 × D295 mm |
| Weight | 8.70kg |
| Accessories | 1× Connection Cable CC-46, 1× Extension Cable CC-47, 1× Fuse 3 Amp, 1 × Fuse 10 Amp. |
CMC-4100
Chairman Unit
- The CMC-4100 Chairman and CMD-4200 Delegate Units have built-in loudspeakers and high quality sensitive electret condenser transducer mounted on 16″ flexible goosenecks. The microphones of the units are equipped with a Ring LED indicator for easy visual identification of the unit in operation. Each unit has a headphone output with volume control.
- The stylish, free-standing cast aluminium case has an angled facia incorporating the TALK switch which automatically mutes the internal speaker.
- The Chairman Unit also has a non-lockable PRIORITY switch which interrupts the meeting with a chime tone and mutes the delegates’ microphones. Both units have recessed volume controls for setting desired sound levels.
- The matching CMS-4300 Secretary Unit has a built-in loudspeaker and a headphone output with volume control. The Secretary Unit enables proceedings to be recorded through a cassette recorder, for a stenographer present to take notes and to relay pre-recorded messages or music to delegates.
| Microphone | -63dBV/µbar, (7.5mV/Pa) |
| Current Consumption | < 50mA Max. |
| Mic Auto Switch-Off Time | 75 seconds approx. |
| Input | Line |
| Output | Line, Headphone with Volume Control |
| Speaker | Max Input 300mW Impedance 16Ω |
| Controls | Priority Switch, Talk Switch, Speaker Volume Control, Headphone Volume Control |
| Dimensions | W145×H75×D180 mm |
| Weight | 1.30kg (w/o cable) |
| Accessories | Foam Windshield, 2.5m Interconnecting Cable |
CMD-4200
Delegate Unit
- The CMC-4100 Chairman and CMD-4200 Delegate Units have built-in loudspeakers and high quality sensitive electret condenser transducer mounted on 16″ flexible goosenecks. The microphones of the units are equipped with a Ring LED indicator for easy visual identification of the unit in operation. Each unit has a headphone output with volume control.
- The stylish, free-standing cast aluminium case has an angled facia incorporating the TALK switch which automatically mutes the internal speaker.
- The Chairman Unit also has a non-lockable PRIORITY switch which interrupts the meeting with a chime tone and mutes the delegates’ microphones. Both units have recessed volume controls for setting desired sound levels.
- The matching CMS-4300 Secretary Unit has a built-in loudspeaker and a headphone output with volume control. The Secretary Unit enables proceedings to be recorded through a cassette recorder, for a stenographer present to take notes and to relay pre-recorded messages or music to delegates.
| Microphone | -63dBV/µbar (7.5mV/Pa) |
| Current Consumption | < 50mA Max. |
| Mic Auto Switch-Off Time | 75 seconds approx. |
| Input | Line |
| Output | Line, Headphone with Volume Control |
| Speaker | Max Input 300mW Impedance 16Ω |
| Controls | Priority Switch, Talk Switch, Speaker Volume Control, Headphone Volume Control |
| Dimensions | W145×H75×D180 mm |
| Weight | 1.30kg (w/o cable) |
| Accessories | Foam Windshield, 2.5m Interconnecting Cable |
CMS-4300
Secretary Unit
- The matching CMS-4300 Secretary Unit has a built-in loudspeaker and a headphone output with volume control. The Secretary Unit enables proceedings to be recorded through a cassette recorder, for a stenographer present to take notes and to relay pre-recorded messages or music to delegates.
| Current Consumption | < 50mA Max. |
| Input | Line, Playback |
| Output | Line, Record, Headphone with Volume Control |
| Speaker | Max Input 300mW Impedance 16Ω |
| Controls | Monitor Speaker Volume Control, Headphone Volume Control |
| Dimensions | W145×H75×D180 mm |
| Weight | 1.15kg (w/o cable) |
| Accessories | 4 Pin Plug for REC/PB, 2.5m Interconnecting Cable |
CMB-4500
Conference Expansion Unit
CMB-4500
Conference Expansion Unit
- An additional unit for adding more delegate units to the system. This unit also provides interconnection with the Central Amplifier CMA-4400. Works on 220-240V AC mains as well as 24V car battery.