The Yorkville Coliseum CA1 is a 2U rack mixer amplifier for shops, restaurants, offices and houses of worship. Its 180 W mono amplifier drives a 4Ω load or up to four separate 70V speaker zones, and a 6-channel mixer brings in microphones, media players and a telephone line.

Mixer and paging

Channel 1 takes a 1/4" microphone, channels 2 to 4 take XLR or 1/4" mic or line sources with switchable 24V phantom power for condenser mics, and two stereo RCA inputs cover music players. Each channel has its own volume and activity and clip LEDs, and a global bass and treble control sets the tone. Voice Priority automatically ducks the other inputs when someone pages, and the four zones can be selected one by one.

Specifications

• Power output: 180 W mono, 4Ω or 70V
• Channels: 6
• Inputs: 1x 1/4" mic, 3x combo XLR / 1/4" mic or line, 2x stereo RCA
• Phantom power: 24V, channels 2 to 4
• Outputs: speaker terminal strip, record output, telephone interface
• Paging: 4 selectable zones, Voice Priority
• EQ: bass and treble
• Signal-to-noise: greater than 55 dB
• Frequency response: 50 Hz to 15 kHz
• THD: less than 1% at 1 kHz
• Cooling: passive
• Chassis: steel, 2U rackmount, black
• Dimensions (D x W x H): 320 x 480 x 150 mm (12.6 x 19 x 5.9 in)