| Content | LD Systems ZONE 624 4-Zone Mixer
The ZONE 624 is a fully-equipped zone mixer with 6 line and 2 microphone channels, that can be assigned to a stereo or a mono master output. The compact 3U rack device also has inputs for an external emergency announcement system and remote-controlled switching mute. Due to its extensive connectivity the ZONE 624 is the extremely flexible control centre solution for PA systems in food outlets, clubs, hotels, fitness centres, and many other areas.
The two balanced microphone inputs have a shared 3-band EQ, 12V phantom power and Talkover functions; the Talkover attenuation can be individually set for all zone outputs on the back of the unit. The 6 stereo input channels of the ZONE 624 are equipped with gain control, signal and peak LEDs, 45 mm faders, Cue buttons and RCA connections; channel 6, in addition with balanced TRS inputs for FOH signals. The device also has a switchable Aux input via 3.5mm mini jack and a USB port, that is used as a stereo input and output (recording out) and turns the ZONE 624 into an external audio interface.
The master section outputs are electronically balanced and use XLR connectors and terminal block connectors. The stereo zone also has unbalanced RCA connectors. The maximum output level for all of the zones can be individually set. The three mono outputs of the ZONE 624 each have a 2-band EQ, a selectable 100 Hz high pass filter, and a MIC mute switch with a level indicator; the inputs 1-6 or the stereo master signal can be selected as a source. The stereo output is equipped with a 3-band EQ, a control for the Talkover sensitivity and two LED chain level meters. Furthermore, the ZONE 624 has a recording output and a controllable PFL headphone jack for previewing.
- Type: stereo
- Number of Zones: 4 (Master, Zone A-C)
- Installation Height: 3U
- Total Input Channels: 8 (2x Mic, 1x AUX/Line, 2x Phono/Line, 2x Line, 1x FOH/Line
- Frequency Response: 20 - 40.000 Hz
- Microphone Channels: 2 (with phantom power 12 V)
- Microphone Channels Connections: 2X 6.3 mm jack (balanced), 1x XLR / 6.3 mm jack (Combo)
- Microphone Channel Controls: 2x Gain, 2x On/Off, 1 x EQ Hi, 1x EQ Mid, 1 x EQ Low, 1x Talkover
- Microphone Channels Display Elements: On-LED
- Microphone Channels Input Impedance: 4 kOhm
- Microphone Channels Input Sensitivity: 4.5 mV
- Microphone Channels THD: 0,08 %
- Line Channels: 6 (Input 1: Aux/Line, Input 2 + 5: Line/Phono, Input 3: USB/Line 4: Line, Input 6: Line/FOH
- Line Input Connectors: Input 1: 2 x RCA + 3.5 mm stereo jack, input 2.4 5: 2 x RCA, input 3: 2 x RCA, input 6: 4 x RCA + 2 x 6.3 mm jack
- Line Channel Controls: Gain, AUX enable, Cue, Level, 2x Phono/Line, FOH On
- Line Channels Display Elements: Signal/0 dB-LED, Cue-LED
- Line Channel Input Impedance: 6 Kohm (Phono 50 kOhm)
- Line Channels Input Sensitivity: 2,1 V (Phono 25 mV)
- Line Channels THD: 0,02 % (Phono 0,05%)
- input sensitivity AUX/Line (3.5 mm stereo jack): 3 V
- Line Outputs: 5 (Master - Stereo, 3x Zone - Mono, Rec - Stereo)
- Master Output Connectors: 2 x XLR (balanced), RCA (2 x), Terminal Block
- Master Controls: Level, EQ Hi, EQ Mid, EQ Low, Max. Level, T/O Sensitivity, T/O Damping
- Master Display Elements: 2 x 10 segment level meter
- Master Output Levels: 24 dBu (balanced), 17 dBu (unbalanced)
- Zone Output Connections: XLR (balanced), Terminal Block
- Zone Controls: Level, Source, Cue, EQ Hi, EQ Low, Max Level, 100 Hz High Pass, Include Mic, T/O Damp
- Zone Display Elements: 5-segment level meter
- Zone Output Levels: 24 dBu (balanced/ unbalanced)
- Output Connections Rec: 2 x RCA
- Headphone Output: 1
- Headphone Out Port: 6.3 mm jack stereo
- Headphone Output Controls: Cue Volume
- Headphone Output Voltage: 2,5 V 32 Ohm
- Additional Inputs: 2 (Emergency Input, Output Mute)
- Additional Input Connections: Terminal Block
- Additional Input Controls: Level Emergency Input
- Emergency Input Sensitivity: 5 V
- Additional Controls: power switch
- Additional Display Elements: Power-LED
- Operating Voltage: 220 - 250 V AC, 50 Hz
- Power Socket: IEC power socket
- Power Consumption (max.): 25 W
- Fuse: T 500 mAL / 250 V
- Dimensions (W x H x D): 485 x 132 x 210 mm
- Accessories included: terminal blocks, power cable, operating instructions
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![]() *8 Input 6BUS 21Out Channel Video Matrix Switch *Select 8 Videos Input/6BUS Video Input *Select 8 Channel Video Input/6BUS Video Input *6BUS Video Links Output *21 Zone Videos Output *RS-422C Post: Select C-500 BUS Output *RS-232C Post: Select Z-500 Video Output *Power Source: DC 24V *Weight: 3kg/6.6Ib *Dimensions(W×H×D): 482×88×380mm/19×3.5×15in
| User's manual [5,41 MB]
LD Systems zone 423 2-Zone-Mixer
The ZONE 423 is a full featured zone mixer with 4 line and 2 microphone channels, that can be assigned to a master and a zone output, as well as inputs for an external emergency announcement system and remote-controlled switching mute. Through versatile connectivity, the compact 2U rack device is the perfect control centre for PA systems in food outlets, clubs, hotels, fitness centres, and is also excellent for presentations and DJs.
In addition to the two balanced microphone inputs with variable Gain and Talkover level,12V-phantom power, and a shared 3-Band-EQ, the ZONE 423 offers Line, Phono-, and Aux-stereo connections in RCA format, a FOH-input with balanced stereo jack plugs as well as a USB and 3.5mm mini jack. The USB-port is used as a stereo input and output and allows the mixer to be used as an external audio interface. The four input channels have individual gain controls with signal and peak value display, 45 mm faders for adjusting the volume and cue buttons.
The master and zone sections each have their own EQ, balanced XLR and unbalanced RCA outputs: the master output via terminal block connectors and the zone output using a mono sum switch, and 100 Hz high-pass filter. The stereo level indication can be set to master or zone, and the maximum output level can be preset for both on the back of the mixer. In addition to an adjustable headphone connection for pre-listening, the ZONE 423 also has a recording output.
- Type: stereo
- Number of Zones: 2 (Master, Zone)
- Installation Height: 2U
- Total Input Channels: 6 (2x Mic, 1x Line/Aux, 2x Line/Phono, 1x Line/FOH)
- Frequency Response: 20 - 40.000 Hz
- Microphone Channels: 2 (with phantom power 12 V)
- Microphone Channel Connections: 6.3 mm stereo jack (balanced), XLR / 6.3 mm jack (Combo)
- Microphone Channel Controls: Gain, On/Off, 1 x EQ Hi, 1 x EQ Low, 1 x Talkover, 1 x Talkover Level
- Microphone Channels Display Elements: On-LED
- Microphone Channels Input Impedance: 4 kOhm
- Microphone Channels Input Sensitivity: 8 mV
- Microphone Channels THD: 0,07 %
- Line Channels: 4 (Input 1: USB/Line, Input 2 + 3: Line/Phono/CD, Input 4: Line/FOH)
- Line Input Connectors: Input 1: 2 x RCA + 3.5 mm stereo jack + USB, input 2 + 3: 4 x RCA, input 4: 4 x RCA + 2 x 6.3 mm jack
- Line Channel Controls: Gain, Source, Cue, Level, Enable FOH
- Line Channel Display Elements: Signal/0 dB-LED, Cue-LED
- Line Channel Input Impedance: 6 Kohm (Phono 60 kOhm)
- Line Channels Input Sensitivity: 1 V (Phono 10 mV)
- Line Channels THD: 0,03 % (Phono 0,05 %)
- input sensitivity AUX/Line (3.5 mm stereo jack): 3 V
- Line Outputs: 3 (Master - Stereo, Zone - Stereo/Mono, Rec - Stereo)
- Output Connectors Master: 2 x XLR (balanced), RCA (2 x), Terminal Block
- Master Controls: Level, EQ HI, EQ Mid, EQ Low, Max. Level
- Master Display Elements: 2 x 10 segment level meter (switchable Master/Zone)
- Master Output Levels: 21 dBu (balanced), 18 dBu (unbalanced)
- Zone Output Connections: 2 x XLR (balanced), RCA (2 x), Terminal Block
- Zone Controls: Level, Source Input 2 - 4/Mix, EQ Hi, EQ Low, Max Level, 100 Hz High Pass, Mono
- Zone Display Elements: 2 x 10 segment level meter (switchable Master/Zone)
- Zone Output Levels: 21 dBu (balanced), 18 dBu (unbalanced)
- Output Connections Rec: 2 x RCA
- Headphone Output: 1
- Headphone Out Port: 6.3 mm jack stereo
- Headphone Output Controls: Cue Volume
- Headphone Output Voltage: 1,2 V 32 Ohm
- Additional Inputs: 2 (Emergency Input, Output Mute)
- Connections Additional Inputs: Terminal Block
- Additional Input Controls: Level Emergency Input
- Input Sensitivity Emergency Input: 5 V
- Additional Controls: power switch
- Operating Voltage: 220 - 250 V AC, 50 Hz
- Power Socket: IEC power socket
- Power Consumption (max.): 22 W
- Fuse: T 500 mAL / 250 V
- Dimensions (W x H x D): 483 x 89 x 210 mm
- Accessories Included: terminal blocks, power cable, operating instructions
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Power Output Level R-300 PLUS
STEREO
8ohm(T.H.D 0.05%) 170W+170W
4ohm(T.H.D 0.05%) 250W+250W
BRIDGED MONO
8ohm(T.H.D 0.05%) 460W
8ohm(T.H.D 0.5%) 500W
Frequency Response 20Hz- 20kHz, ±0.5dB
Convection Cooled
SoftStart Protection System
Balanced 10kΩ@0.775V Inputs
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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. | L2400 750W-750W 4ohm (500W-500W 8ohm)
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. |
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