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The JBL Commercial CSM-21 offers fixed I/O, pre-configured architecture, full stereo or mono operation, flexible routing and control of multiple audio sources, simple front-panel configuration and control without the need for a computer, compatibility with the CSR wall controllers, compatibility with the CSPM paging microphones, and optional duplication of audio channels to another device via a Cat5 cable. The CSM-21 features two stereo music inputs with gain control and clip LEDs, and one stereo output with an active crossover and a dedicated subwoofer output. | LDMS828 - 19" Line Mixer 8 in 2 and Splitter 2 in 8
The LD Systems LDMS828 is a mixer, splitter, and booster amplifier in 19” rack format for flexible live and studio applications.
The LDMS828 has one stereo and six mono channels with individual LED level metres; all inputs and outputs are electronically balanced. Two mono channels are equipped with stereo TRS sockets, the other connectors are XLR sockets. The stereo channel has individual volume controls for input and output and a link button for looping through the signal; each mono channel has volume and panorama controls as well as a button that toggles between the splitter and mixer functions.
TheLDMS828 by LD Systems is impressive not only because of its practical features, but also because of its technical specifications. The broad frequency response of 5 - 40,000 Hz, a dynamic range of 85 dB, and the extremely low total harmonic distortion of 0.0008% guarantee maximum signal fidelity. The nominal working level of -10 dBV to +4 dBU makes the mixer/splitter suitable for connection to both professional and consumer equipment.
Mono input channels, line
6
Mono line input connectors
2 x 6.3 mm TS
Mono line input type
Electronically balanced
Stereo Line Input Channels
1
Stereo Line Input Connectors
2 x XLR
Stereo Line Input Type
Electronically balanced
Input impedance
(balanced) 50000 Ohm(s), (unbalanced) 25000 Ohm(s)
Max. input level
+ 21 dBu
Nominal working level
-10 dBV - +4 dBu
Mono output connectors
2 x 6.3 mm TS
Mono output type
Electronically balanced
Stereo output connectors
1 x XLR
Stereo output type
Electronically balanced
Output impedance
(balanced) 60 Ohm(s), (unbalanced) 30 Ohm(s)
Max. output level
+22 dBu
Frequency response
5 - 40000 Hz
Controls
Level Channel 1-6, Main Input Level, Main Link, Main Output Level, Power, Splitter/Mixer Channel 1-6
Indicators
In/Out Level Channel 1-6 (6 -segment), Input Level LED Indicator (6-segment), Output Level Indicator (6-segment), Power
Operating voltage
220 V AC - 240 V AC, 50-60 Hz
Mains connector
IEC power connector
Accessories (included)
Power cord
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The MZ-372 allows multiple audio sources (19 total) to be mixed, muted, and routed to 2 redundant outputs, controlled by familiar volume sliders and assignment buttons. Input signals can be inserted via 6 audio channels, each consisting of 2 sets of unbalanced RCA stereo pairs, and 6 XLR inputs for a total of 12 sets of RCA inputs and 6 XLR inputs. In addition, channels 2/3/4 can be set to accommodate phono-level signals for use with a turntable. Lastly, and located conveniently on the front panel, one additional XLR input is available driving a studio quality mic preamp and ducking circuit for easy voiceover and announcement work.
Multiple Zone Outputs
Twin outputs each feature a combination of balanced XLR or RCA unbalanced connectors for easy integration into virtually any audio system. This flexibility allows combinations of microphones, CD/DVD/Blu-ray players, instruments - or any other audio source - to be selected or muted, and sent simultaneously to the dual outputs, each with it’s own volume control. Finally, the convenient "Talkover” function will automatically lower any mixed channel source so the microphone connected to the front panel can easily be can be heard in whichever zones you choose.
Easy, Immediate Control
Familiar volume sliders, switches/buttons, EQ knobs, and mute buttons make the MZ-372 simple and fast to operate and set up. There is even a master recording stereo output, which can send audio to an external recorder which makes event or music performance capturing easy. The Booth outputs provide another stereo feed with independent control for additional monitoring.
- Maximum flexibility for audio routing, input selection, and multiple redundant output flow, perfect for integrator, musical instrument, and residential applications
- Multiple inputs include 12 sets of stereo RCA-type, 6 selectable mic/line XLR, and a dedicated front-panel XLR mic input; 19 total input "sets”
- Channel audio sources can easily be selected, muted, and contoured via simple volume sliders, toggle switches/buttons, and knobs
- Two redundant output channels each with stereo XLR balanced and unbalanced RCA-type connectors; each with separate volume control
- Separate stereo booth, recording, and headphone outputs each with independent control
- One additional mic-compatible XLR input on the front panel with "Talkover” function automatically lowering source audio
- Independent three-band EQ per each of the 5 channels and a two-band EQ on the additional front panel microphone input
- Compact 3U rack mount design
| L1400 450W-450W 4ohm (280W-280W8ohm)
COMPACT MODERN DESIGN
Compact size (2U-Rack Height) with up to 1200W per channel@2ohms
these amps save valuable rack space without compromising power output.
HIGH CURRENT TOROIDAL TRANSFORMER
A high-current toroidal transformer saves rack space
and minimizes hum and noise.
EXCELLENT SOUND QUALITY
The low T.H.D.(0.05%) and high damping factor (400 or higher)
gives excellent sound quality.
2 STAGE POWER SUPPLY
The high-power units (L1800 and L2400) have a 2-Stage Class-H design
that maximizes their performance.
EQUIPPED WITH 30Hz or 50Hz HPF
All amplifiers are equipped with high-pass filters on each channel to
help maintain sound quality, yet help protect the loudspeakers.
EXTENSIVE PROTECTION CIRCUITS
Extensive protection circuits monitor over voltage/current conditions, overheating,
output shorts, and DC voltage to improve performance and reliability.
CLIP-LIMITER CIRCUITS
Clip-limiters on each channel are provided to help prevent
distortion due to excessive signal levels.
L.E.D FUNCTION DISPLAYS
Power, Clip limiter, Signal, Protection, Mode (Parallel/Stereo/Bridged)
LEDs on the front panel indicate the status of the unit in operation. | REVAMP4240T is a professional 4-channel digital power amplifier with 4 x 240 watt output power @ 100 volt, but the unit is also bridgeable to 2 x 480 watts @ 100 volt. The unit incorporates a high efficient SMPS power supply and outputs with efficient Class D output topology. REVAMP4240T is the ideal amplifier for applications with 4 zones in mono, 2 zones in stereo or even bridged dual mono or bridged stereo systems. This amplifier contains an intelligent variable speed cooling fan that only will be activated in case of emergency.
In order to match each input to its respective source the input sensitivity can be adapted to your needs. The input stage also features a build-in 250 Hz HP-filter to optimise the system for use on horn speakers whenever you would need this. Each pair of outputs can be bridged to give you 2 x 480 watts of output power! The very intuitive front display shows what is going on with one blink of an eye. The output power is constantly under control thanks to our own made limiter that prevents annoying pumping limiter sound but yet keeps the system fully under control and you still have that dynamic sound. Ease of use, high-tech, reliability and a wide versatility has never been as cleverly combined as in this REVAMP4240T amplifier. | For a long time, installers worldwide have been unhappy with consumer electronics and they were looking for a professional integrated amplifier for use in commercial environments, boardrooms or small businesses designed for 24/7 operation. Therefore Apart developed the CONCEPT1, a stereo or two mono channel (2 x 80 watts @ 4 ohms) amplifier for small and medium-sized projects.
This CONCEPT1 2-zone integrated stereo amplifier can operate with one stereo zone, two volume-linked mono zones or two individual-volume mono zones. The unit can be controlled via RS232 what makes integration into your AV solution possible. The built-in limiters and system design guarantee a failsafe solution 24 hours a day, 7 days a week.
To make the life of the end-user as easy as can be, the CONCEPT1 has user settings and installer settings. Only the absolute
| 19" (483 mm wide) rack mounting |
Yes |
height- rack units (1U=44 mm) |
2 U |
| depth (build in) |
293 mm |
power supply |
230 VAC volts |
| power consumption (max) |
< 200 watts |
output power RMS 4 ohms |
2 x 80 watts |
| output power RMS 8 ohms |
2 x 60 watts |
music program power |
100 watts |
| minimum impedance load |
4 ohms |
zone outputs |
2 |
| MIC inputs balanced |
1 |
line input unbalanced |
4 |
| tone control |
Yes |
RS232 (serial communication port) |
Yes |
| priority switch |
2 |
priority levels |
1 |
| cooling system |
convection |
applicable low impedance |
Yes |
|
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