Phasing, Microphone Input, Auxiliary Input

Connections

Phasing

As the voltage on a speaker changes from plus to minus, the speaker cone moves from pushing out to pulling in. If you reverse the polarity, the speaker responds in the opposite manner.

If a speaker is pushing out and an adjacent speaker is pulling in, some of the pressure caused by the speaker pushing out will be absorbed by the speaker pulling in. These two speakers are operating out of phase.

In a paging system, all the speakers should be in phase so that they all push out at the same time. Out of phase speakers operate perfectly well and will not cause any harm to a paging system, but will tend to diminish the bass response in the area around the out of phase speaker.

The important thing is to wire all the same polarity (+ or -) connections together. This will ensure that the speakers in the system all work in unison.All paging speaker connections have a polarity indicator. It may be a color code, plus (+) and minus (-) symbols, or a red dot.

Microphone Input

Connect a low-impedance dynamic microphone (these microphones connect using 3 wires and do not require a power source) to the microphone terminals as shown.

Note: Condenser microphones will not work with the GA6A because the GA6A does not supply phantom power, which is required for these microphones to operate.

Use two-conductor shielded cable for a balanced input and connect the shield to the ground terminal.

Auxiliary Input

Use a shielded RCA cable to connect to the high-impedance AUX input. The center of the connector is hot and the outside is ground.

Power and Grounding

The AC line cord should be plugged into a three-wire, grounded outlet providing 120V AC, 60 Hz. It is important to ground the unit. If a three-wire outlet is not available, use an adapter to con- vert a standard two-wire outlet for use with three-wire plugs. Connect the grounding pigtail on the adapter to the screw securing the wall plate. If the wall plate screw is not grounded, it will be necessary to connect a grounding wire from the GND terminal on the rear of the amplifier to a suitable ground.

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+	+	+	+

Out-of-phase speaker connection.

GA6A specifications

The Bogen GA6A is an advanced amplifier designed to meet the diverse needs of professional audio applications. Known for its superior sound quality and robust performance, the GA6A is widely favored in settings such as schools, auditoriums, and places of worship. One of the standout features of this model is its ability to deliver 60 watts of power, ensuring that audio remains clear and strong even in larger environments.

The GA6A is equipped with multiple input channels that allow for versatile management of various audio sources. This includes four microphone inputs and one aux input, all of which can be individually adjusted. This flexibility makes it ideal for scenarios where different audio sources need to be mixed seamlessly. The amplifier also includes built-in tone control features, allowing users to fine-tune bass and treble levels to suit the acoustics of the room.

In terms of technology, Bogen has prioritized durability and ease of use in the GA6A design. The amplifier is constructed with high-quality components that can withstand the rigors of daily operation while providing a reliable performance. Additionally, the GA6A features a compact and lightweight chassis, making it easily transportable for events or temporary setups.

For user convenience, the front panel layout includes intuitive controls for volume, bass, and treble adjustments, along with LED indicators for power and signal status. This design ensures that even those less experienced with audio equipment can operate the amplifier effectively.

Another key characteristic of the Bogen GA6A is its versatility in output capabilities. It supports constant voltage systems, making it suitable for a variety of speaker configurations. The built-in protection circuits guard against overloading and overheating, extending the lifespan of the amplifier and maintaining consistent performance over time.

With its combination of power, flexibility, and user-friendly features, the Bogen GA6A stands out as an ideal solution for anyone seeking a dependable and high-quality audio amplification system. Whether for educational settings or public speaking events, this amplifier meets the demands of professional audio with ease.