Cloud USA Z8MK4 3 U Rackmountable Audio Mixer

Cloud USA Z8MK4 3 U Rackmountable Audio Mixer

Cloud USA Z8MK4 3 U Rackmountable Audio Mixer

Cloud USA Z8MK4 3 U Rackmountable Audio Mixer

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Cloud USA Z8MK4 overview

  • 1Description

The Z8MK4 3 U Rackmountable Audio Mixer from Cloud USA is a multi-zone mixer that combines simple control of background music with versatile microphone paging for up to eight separate areas. It is suitable for use in many types of premises, including pubs, bars, clubs, shops, offices, hotels, and more. It has six stereo line inputs, four balanced and two unbalanced and three microphone inputs, one of which is configured specifically for use with paging mics. The mixer has eight separate mono zone outputs. The front panel provides separate controls for music source selection, music level, and two mic levels in each zone. The EQ cards are suitable for various models of installed sound loudspeakers that may be fitted to any or all outputs.

The audio mixer is compatible with Cloud PM Series paging microphones via the Cloud Digital Paging Interface, which requires a single Cat5 cable for connection. The interface allows a second mixer to be cascaded, permitting up to 16 zones to be addressed. The paging mic input can alternatively be configured to suit most OEM paging systems, zone selection for paging being via short-to-ground access connections. Each zone may be independently configured for music ducking, triggered either by the access port or VOX control. The ducking feature has selectable release times. The paging mic has priority over the other mic inputs (Mic 1 and Mic 2). Paging mic level to each zone is set with a recessed front panel preset control. When Mic 1 and/or Mic 2 are in use, music ducking can also be enabled on a per-zone basis. Additionally, Line input 6 may be set to have priority over any other selected music source in any zone, to facilitate connection of a digital sound store, jukebox, emergency message system or similar source.

The Z8MK4 audio mixer is provided with a multi-purpose Facility Port. The purpose of the port is to connect the LM-2 remote input plates (sold separately) which allows mic and/or line level sources located in the zone to be routed to the zone’s audio system. The Facility Port can also be used as a general purpose, balanced, line level, auxiliary zone input.


With Standard Cloud Remote Control Panels: RL-1 Series (music level) and RSL-6 Series (music level and source selection), per-zone


3 U 19" rack-mounting units
Provides flexible music, paging and announcement facilities in eight zones
Front panel user controls for music source, music level, and Mic 1/Mic 2 level in each zone
Four balanced and two unbalanced stereo line inputs with individual gain trim controls
Two general-purpose balanced mic inputs with 15V phantom power
Cloud Digital Paging Interface allows direct connection of PM Series paging mics with a single Cat5 cable; additional units may be cascaded
Separate balanced paging mic input with 15V phantom power available
Contact-closure access port for paging zone selection
100 Hz hi-pass filter on all mic inputs
Sensitivity and HF/LF EQ adjustment for each mic input (rear panel)
Eight electronically-balanced mono zone outputs
HF/LF music EQ adjustment on each zone output
Configurable music-under-mic ducking, per zone
Zone 1 has selectable Line 6 priority with choice of release times
Music mute control input (N/O or N/C) for interface to emergency system
Configurable, per-zone Facility Port for optional remote mic/line (LM-2 Series) input plates
Facility port can act as balanced aux input to each zone
EQ cards for various installation loudspeakers (sold separately)
Table of Contents
  • 1Description

Cloud USA Z8MK4 specs

Line Inputs
Frequency Response 20 Hz to 20 kHz, ±0.5 dB
Distortion <0.08%, 20 Hz to 20 kHz
Sensitivity 218 mV (-11.0 dBu) to 3.2 V (+12.5 dBu), +/-0.5 dBu
Input Gain Control 20 dB (unbalanced inputs), 22 dB (balanced inputs)
Input Impedance 47 kOhms
Headroom >20 dB
Noise <-90 dB A-weighted, rel. 0 dB gain
Equalization LF: ±10 dB @ 50 Hz
HF: ±10 dB @ 10 kHz
Microphone Inputs
Frequency Response 100 Hz (-3 dB filter) to 20 kHz, ±0.5 dB
Gain Range 10 dB to 50 dB
Input Impedance >2 kOhms (balanced)
Phantom Power +12 V (internal DIP switch for selection)
Headroom >20 dB
Noise -120 dB EIN, 22 Hz to 22 kHz (ZS=150 Ohms)
Equalization LF: ±10 dB @ 100 Hz
HF: ±10 dB @ 5 kHz
Type Facility
Input Impedance 10 kOhms (balanced); Pin 3 +, Pin 4 -
Sensitivity 0 dBu (775 mV)
Noise Gate Enabled by internal jumper
Output Level 0 dBu (775 mV) balanced
Minimum Load Impedance 600 Ohms
Maximum Output Level +20 dBu (7.75 V)
Power Input 85 to 253 VAC, 47 to 63 Hz
Fuse Rating 250 V - T1A H (high breaking capacity)
Fuse Type: 0.7 x 0.2" (20 x 5 mm) 250 V
Dimensions (W x H x D) 19 x 5.2 x 6.3" (48 x 13 x 16 cm)
Weight 9.7 lb (4.4 kg)

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