1U 19" rack-mountable quad amplifier with 4 input channels and 4 independent speaker outputs. Each output can deliver up to 60W to either low impedance (4 or 8 ohm) or 100V speakers by connecting either the upper or lower screw terminals on the rear panel. An internal media player can play audio files from a USB pen drive, tune to FM radio stations or connect via Bluetooth® to a smartphone for wireless playback of stored audio tracks. A paging mic input has switchable Vox function to override other channels. 2 further balanced inputs can be selected to accept mic or line level input with switchable phantom power. Channels 1 to 3 also each have Bass and Treble controls for tone adjustment. A separate line input has RCA or screw terminal connection and, if required, can be switched to serve the internal media player. Each of the four inputs can be selected to any or all of the four output zones, each with a separate output level control and line level output for expanding to further amplifiers or powered speakers. An optional CS4 call station may be added if specific area paging is needed, providing a fully independent and flexible zoning system for background music, recorded information and announcements.
4 independent class-D 60W amplifiers
100V or low impedance output options
Internal USB/FM/Bluetooth player
24V EMG contacts mute inputs 2-4
Optional call station - CS4 (953.146UK)
Power supply 100/240Vac, 50/60Hz (IEC)
Fuse rating 5 A
Inputs Paging mic, 2 x mic/line, 1 x line/media player
Input connections 3 x XLR, 1 x RCA/screw terminal, RJ45 (CS4), 3.5mm Aux
Output connections 4 x 100V (+/-), 4 x 4 ohm (+/-), 4 x RCA (line level)
Call station input RJ45
Audio source USB player, FM tuner and Bluetooth receiver
Fire alarm contacts 24V screw terminals
Output power : rms 4 x 60W (100V or 4 ohm)
Dimensions 482 x 283 x 43mm
Weight 6.85kg
Input impedance : mic 5k Ohms
Input sensitivity : mic -38dBV
Input sensitivity : line -10dBV
Input impedance : line 10k Ohms
Input sensitivity : call station 0dBV
Input impedance : call station 10k Ohms
Equaliser : bass 100Hz ±10dB
Equaliser : treble 10kHz ±10dB
Phantom power +20V (switchable inputs 1-3)
Bluetooth version 5.0
THD +N <2% @1kHz (rated power)
Protection Short circuit, overload, overhea
