Cloud USA 46-50T 4-Zone 2 U Rackmountable Mixer Amplifier

BH #CL4650T • MFR #46-50T
Cloud USA
Cloud USA 46-50T 4-Zone 2 U Rackmountable Mixer Amplifier
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Expected availability: 7-10 business days

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  • This item is noncancelable and nonreturnable.
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Cloud USA 46-50T Overview

The 46-50T 4-Zone 2 U Rackmountable Mixer Amplifier from Cloud USA combines simple control of background music, microphone paging, and power amplification for up to four zones in a single unit. It is suitable for use in many types of premises, such as pubs, bars, clubs, leisure, and fitness centers, shops, offices, hotels, and more. It has six stereo line inputs and two microphone inputs; one mic input can be configured for paging purposes. Each line and mic input has its own preset sensitivity control on the rear panel, and each mic input additionally has HF/LF EQ adjustment to optimize the inputs for better clarity.

The 46-50T has four mono zone outputs, each being driven by a 50W (nominal rating) power amplifier stage. Pre-power stage outputs (0 dBu, unbalanced) are also provided for Zones 1 and 2. Line 6 input may be set to have priority over any other selected music source in Zone 1, to facilitate connection of a jukebox, digital sound store, or similar device. The priority feature has selectable release times, to allow a smooth return to the original music source.

Any or all of the outputs may be configured as high impedance, allowing the 46-50T to drive 70V-line loudspeaker systems with the addition of an optional 4-channel, internally-fitting transformer module. Alternatively, single transformers are available as standard accessories for external connection. If less than four separate zones are required, the power amplifier stages for Zones 2 and/or 3 may be fed with the program from Zone pre-amp sections 1 and/or 4 respectively, doubling the amplifier power available. The front panel provides separate user controls for adjusting the level of each mic input, music source selection, and music level, for each zone. Preset controls for HF and LF EQ adjustment of each zone output are also fitted.

The mixer amplifier is compatible with all Cloud PM Series paging microphones. The paging mic input can be configured to suit most OEM paging systems. Zone selection for paging is via short-to-ground access connections, and the unit may be configured by internal jumper for automatic music ducking (mic-over-music priority), triggered by VOX control. Furthermore, this mixer amplifier features a Facility Port that allows remote input plates of various types (sold separately) to be connected so that mic and/or line sources such as radio mics, DJ mixers, iPods, laptops, or other audio sources can be connected in the zone itself. A remote Music Mute facility is provided, which can be used to satisfy the requirements of the Local Fire Officer.


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


2 U 19" rack mounting unit
Eight input (6 x line, 2 x mic) mixing amplifier for four zones
Provides flexible music, paging, and announcement facilities in each zone
4 x 50W power output
Dynamic clip limiting in power amplifier stage
Zones 1 & 2 auxiliary line level outputs (pre-power amplifier), for connection of additional external amplifiers
Front panel user controls for music source, music level, and level of each microphone, for each zone
Front panel preset controls for HF/LF EQ for each zone output
Six (unbalanced) stereo line inputs with individual gain trim controls
Contact closure access port for paging zone selection
Selectable VOX-triggered mic-over-music priority
Sensitivity and HF/LF EQ adjustment for mic input (rear panel)
Selectable Line 6 priority in Zone 1, with choice of release times
Slave Mode: Two power amplifier stages may be fed from a single program source
Zone 1 Facility Port for connection of optional LM-1 (mic/line) or DM-1 (dual mic) remote input plates
Facility Port may also be used as additional balanced line input to Zone 1
Selectable 65 Hz high-pass filter per-output (for use with 70V line systems)
Music mute control input (N/O or N/C) for interface to emergency system
EQ cards (sold separately) to suit various popular installation loudspeakers may be fitted in any or all outputs
Thermostatically-controlled fan cooling

Cloud USA 46-50T Specs

Line Inputs
Frequency Response20 Hz to 20 kHz, +/-0.5 dB
Distortion<0.03%, 20 Hz to 20 kHz
Sensitivity195 mV (-12 dBu) to 2.0 V (+8 dBu)
Input Gain Control20 dB range
Input Impedance47 kOhms
Headroom>20 dB
Noise-90 dB (0 dB gain, 22 Hz to 22 kHz)
EqualizationHF: ±10 dB @ 10 kHz
LF: ±10 dB @ 50 Hz
Microphone Inputs
Frequency Response100 Hz -3 dB (fixed filter) to 20 kHz ±0.5 dB
Distortion<0.05%, 20 Hz to 20 kHz
Gain Range10 to 50 dB
Common Mode Rejection>70 dB @ 1 kHz
Input Impedance>2 kOhms (balanced)
Headroom>20 dB
Noise-128 dB EIN 22 Hz to 22 kHz (Rs = 150 Ohms)
EqualizationHF: ±10 dB @ 5 kHz
LF: ±10 dB @ 100 Hz
Low Impedance4 Ohm Load: 50 W
8 Ohm Load: 35 W
Auxiliary OutputZones 1 & 2: 0 dBu (unbalanced)
Outputs100 V-Line Balanced: 250 Ohms minimum load
70 V-Line Balanced: 125 Ohms minimum load
(with optional CL-4160 module fitted internally)
Amplifier ProtectionDynamic clip protection, VI limiting, DC offset, thermal & switch-on delay
CoolingVariable speed DC fan
Power Input115 VAC ±5% or 230 VAC ±5%
Fuse Rating115 V: T6.3AH
230 V: T3.15AH
FuseType: 0.7 x 0.2" (20 x 5 mm), 250 V
Dimensions19 x 3.5 (2 U) x 15" (48 x 8.9 x 38 cm)
Weight17 lb (7.7 kg)
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