The Cloud 46-80 is a versatile, four-zone, rack-mounting (2U) audio mixing amplifier. It combines simple control of background music, microphone paging and power amplification for up to four zones in a single unit. It has extensive remote control facilities and is ideal for installation in premises such as pubs, bars, hotels, clubs, leisure and fitness centres, retail and other commercial premises, etc. The 46-80 has four mono zone outputs, each driven by an 80 W (nominal rating) power amplifier stage: if less than four separate zones are required, the power stages may be paralleled in various ways to obtain increased output power. The power stages have extensive protection circuitry to safeguard both the amplifier and loudspeakers. Two versions are available, which differ only in their output circuitry: Model 46-80 is for use with low-impedance loudspeaker systems, while Model 46-80T is factory-fitted with four internal CXL-80T line transformers, and is thus suitable for driving 70/100 V-line loudspeaker systems. It is possible to retrofit CXL-80Ts to a Model 46-80; any or all of the outputs may be so configured. Switchable 65 Hz high-pass filters to prevent transformer core saturation at low frequencies are available for each Zone; these are set via internal jumpers and are factory-set to ON in the 46-80T. The 46-80 has six stereo line inputs (four balanced and two unbalanced) and two microphone inputs; Mic 1 input can be configured for paging purposes. Both mic inputs feature individually selectable 15 V phantom power. Each line and mic input has its own preset type gain control on the rear panel, and each mic input additionally has HF/LF EQ adjustment to optimise the inputs for greatest clarity. The front panel provides separate rotary user controls for music source selection, music level and level of each mic input for each zone. Preset controls for HF and LF EQ adjustment of each zone output are also fitted. A steel security cover is available to prevent access to the EQ controls. Each Zone has a Peak LED to warn of excessive signal level; further LEDs indicate power status, Music Mute active and Line Input “signal present”. The Power LED is bicolour and also indicates various fault states. The 46-80 is equipped with a Cloud CDPM digital paging mic port, making it directly compatible with Cloud PM Series paging microphones. Alternatively, the Mic 1 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. Line Input 6 may be set, via rear panel DIP switches, to have priority over any other selected music source, either in Zone 1 or in all Zones. This facilitates connection of a jukebox, digital sound store or similar device. An input at the Facility Port from a remote input plate may be configured to duck when a Mic Input 1 signal is present; this allows emergency announcements to still be made in Zones that are using locallyconnected input sources. All priorities give a smooth release when returning to the original music source. In addition to the main Zone outputs, the 46-80 also has a Utility/ Loop output, which carries its own mix of mic (summed post Zone 1’s mic level controls) and music signals, set with rear panel controls. This is ideal for driving a hearing loop amplifier. The music source for this output can be configured to follow the selection in any Zone, or to carry either Line Input 1 or Line Input 6 at all times. There are two further outputs, taken from pre the power stage outputs of Zones 1 and 2: these are balanced at line level (0 dBu) and may be used to connect additional, external power amplifiers or for any other purpose. A particularly useful feature of the 46-80 is the Zone 1 Facility Port; this allows a Cloud LM-2 active Line/Mic/Remote mixer module to be connected so that mic and/or line sources - such as radio mics, DJ mixers, MP3 players, laptops/tablets or other audio sources - may be plugged in within the zone itself. This simplifies the use of an area of the premises for presentations or other special functions where portable audio sources are in use. The Cloud BT-1 Bluetooth module and the L-1 and M-1 active remote line and mic input plates are also compatible with the Facility port. This port can also provide an additional balanced line input to Zone 1. As with all Cloud commercial audio products, a remote Music Mute facility is provided, which may be used to satisfy the requirements of the Local Fire Officer.
Cloud Electronics 46-80T Features
• Eight input (6 x line, 2 x mic) mixing amplifier for four zones
• 4 x 80 W power output, 70/100 V-line version also available (46-80T)
• CXL-80T 70/100 V-line transformers may be retrofitted per-channel to 46-80
• Slave mode: power amplifier stages may be paralleled in various configurations and fed from a single programme source
• Peak limiter to protect power amplifier stages and loudspeakers
• Utility/Loop output with independent mic/music mix and user-definable music source
• Balanced, line level aux outputs (pre-power stage) from Zones 1 and 2
• Four balanced and two unbalanced stereo line inputs with individual gain trim controls
• Two balanced mic inputs; 15 V phantom power selectable on either or both
• Zone 1 Facility Port for connection of optional remote input plates: LM-2 mic/line input + music controls, BT-1 Bluetooth input, L-1 line input, M-1 mic input
• Music Mute control input (N/O or N/C) for emergency alarm system
• Compatible with standard Cloud remote control panels: RL Series (music level) and RSL Series (music level and source selection), per-zone
• RS-232 port for serial control of per-Zone MIC 1 muting, music level and source plus global unit standby, Music Mute and MIC 2 muting
• User–selectable Automatic Power Down for maximum energy efficiency
• Convection-cooled (no fan): silent in operation
