Combo Amplifiers
Contents IMPORTANT SAFETY INSTRUCTIONS 1) Read these instructions. 2) Keep these instructions. 3) Heed all warnings. 4) Follow all instructions. 5) Do not use this apparatus near water. 6) Clean only with a dry cloth. 7) Do not block any ventilation openings. Install in accordance with manufacturer’s instructions. 8) Do not install near any heat sources such as radiators, heat registers, stoves or other apparatus (including amplifiers) that produce heat.
Welcome to Acoustic Image! Operation You have purchased a state-of-the-art musical instrument amplifier system, combining purity, power and portability in a package that sets a new standard in high fidelity amplification. Power This manual provides operating information for your Acoustic Image Contra, Coda R and Corus combo amp or Contra EX extension speaker cabinet. On AC Input 115/230 VAC 50/60 Hz 400 Watts I CAUTION: TO REDUCE THE RISK OF ELECTRIC SHOCK, DO NOT REMOVE COVER.
Preamp Controls The preamp has the following controls in each channel: input level, bass, mid, treble and effects level. In addition,there is a variable frequency, selectable notch/low cut filter in each channel and a master level control that affects both channels. Phantom power Ch 2 input, EQ and filter (same as Ch 1 below) Level XLR input The input level controls the level of the signal at the input stage of the preamp.
Return level Ch 2 effects send remove a given feedback frequency to reduce feedback “howl”. The low cut filter is used to reduce the bass output in cases where room location or instrument/pickup combination results in “boomy” sound. To use either, push the on/off switch to turn on the filter circuit then select the filter type using the notch/cut switch. Start with the control fully counterclockwise and gradually turn it clockwise until the desired effect is achieved.
protection is working. To be on the safe side, you should shut off the power to the amp before connecting or disconnecting speakers from the unit. Stereo Operation The two-channel preamp of the Coda R and Corus can be operated in stereo mode. When it is in the “on” position, the switch labeled “Ch 2” connects the channel to the internal power amp and speaker. When it is in the “off” position, it is disconnected from the internal amp but is accessible from the channel 2 send output.
Specifications System (all models) Frequency Response Warranty and Repair We stand behind our products with a full warranty of five years from the date of purchase. Should a problem arise, please call us before returning your amplifier or enclosure. Naturally, our warranty does not cover products that have been damaged through misuse. Be sure to check our web site regularly, we have an FAQ section and we post helpful information for getting the most out of your Acoustic Image product.
FCC Compliance Notice This device complies with part 15 of the FCC rules. Operation is subject to the following two conditions: (1) This device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation. CAUTION: Changes or modifications not expressly approved by the party responsible for compliance could void the user’s authority to operate the equipment.
