A DIVISION OF LEAR SIEGLER, INC.
AMPLIFIERS |
Models CT 35/60/100 |
Bogen Acousta-Master@ CT Series Public Address Amplifiers are versatile, silicon-transistor preamp-mixer- amplifiers designed for professional-quality sound reinforcement requirements. Model CT-35 is rated at 35 watts, Model CT-60 at 60 watts and CT-100 at 100 watts output.
Four high-impedance microphone inputs are provided, each convertible for use with low-impedance microphones. A simple modification converts inputs to low-impedance unbalanced; balanced inputs require accessory plug-in transformers. Two mic inputs and one auxiliary input may be remotely controlled or muted for announcements over another mic channel. The same two mic inputs may be converted to accept a magnetic source, i.e., turntable or tape player. Two auxiliary inputs with fader control are provided, as well as a bridging input.
Acousta-Master amplifiers feature the Bogen built-in acoustic equalizer filter circuit, which provides a means of boosting or attenuating any of five selected frequencies to suit individual room acoustics. An electronic limiter circuit provides uniform output regardless of wide variations in the input level. With this capability, all paging calls can be transmitted with the same volume and clarity.
An output terminal strip and connectors at the rear of the amplifier provide standard speaker impedance taps, as well as connections for 25volt or 70-volt balanced lines. There is also a bridging output for feeding a tape recorder.
Bogen accessories provide the amplifier with telephone line input and output connections, remote volume control, and channel override facilities. Further information is contained in the Accessories section.
The amplifier operates from a 105-125 volt, 50/60 Hz source. A three-prong line cord provides automatic grounding when connected to a three-wire power outlet. The power line is protected by a circuit breaker, and the output transistors by a thermal overload device, which shuts off the unit when the temperature of the heat sink rises excessively.
INSTALLATION
UNPACKING
The amplifier was carefully checked before leaving factory. Inspect shipping container and unit carefully for indications of improper handling. If the unit has been damaged, make an immediate claim to distributor from whom it was purchased. If the amplifier was shipped to you, notify transportation company without delay and place your claim.
POWER AND GROUNDING
The ac line cord has a three-prong plug which should be plugged into a three-wire grounded, 120 volt, 60 Hz outlet. As it is important to ground the amplifier, where a threewire outlet is not available, use an adapter (e.g., Leviton No. 5017) and connect the grounding pigtail to the screw securing the wall plate. If the wall plate screw is not grounded, connect a wire from the GND terminal of the amplifier to a suitable ground.
AUXILIARY POWER
The auxiliary power receptacle on the rear chassis (see figure 1) is a three-wire grounded outlet, which can supply power to accessory sound equipment. When connecting associated equipment with a three-prong cord, appropriate grounding is accomplished when the amplifier line cord is properly grounded.
Use the ON/OFF switch on the phonograph for turning off a record player connected to the auxiliary receptacle, as use of the amplifier power switch could cause flats to develop on the idler wheel of the phonograph.
Be sure that the auxiliary components do not draw more than 250 watts on the CT35 and CT 60, and 500 watts on the CT1 00.
Prmted in USA 8104 54-5629-l 4
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