70V Mono Mode, Dual Mono Mode, Audio Buses

Operation

70V Mono Mode

Placing the 3-position switch to its right most position puts the amplifier in the 70V Mono mode of operation. The amplifier supplies a single channel of amplification in this mode (see 70V Mono Mode Block Diagram). This mode also mixes the signals from each input module into a mono pro-

gram. Input signals of modules that are assigned to the "A"

bus are controlled by the "A" level control on the front of the unit and likewise for modules whose outputs are

assigned to the "B" bus. By assigning each module to a different bus, a 2:1 mixer is formed with the front-mount- ed level controls adjusting the mix. Additionally, one module can be set to mute the other when it is active, thereby providing an effective paging system (see the section on Module Priority). It is important in this mode to set the assignment jumpers on the two input modules so that their outputs are on different audio buses (see the section on Audio Buses). Speakers must be correct for 70V operation. (See section on 70V “Transformer- Coupled” Speakers).

70V Mono Mode Block DiagramDual Mono Mode Block Diagram

Dual Mono Mode

Placing the 3-position switch to its center position puts the amplifier in the Dual Mono mode of operation.This mode is similar to the 70V Mono mode except that the amplifier supplies two channels of low-impedance amplification in this

mode (see Dual Mono Mode Block Diagram). This mode still

mixes the input signal from the different modules but a Channel Balance control is provided to adjust the output levels of one channel against the other (see the section on

Channel Balance). It is important in this mode to set the assignment jumpers on the two input modules so that their outputs are on different audio buses (see the section on Audio Buses). Speakers must be low-impedance type, not 70V type.

Audio Buses

The M-Class amplifier contains two separate audio buses.The "A" bus level is adjusted by the "A" level control on the front of the unit and the "B" bus is adjusted by the "B" Level control. Most Bogen modules provide a means to assign their output to either or both of the audio buses.The instructions that accompany the mod- ules will describe the jumper settings for these assignments.When using the M-Class amplifier in either the 70V Mono or Dual Mono modes, the module signals will be mixed. For maximum control when mixing signals, it is important that each of the two input modules be set so that the outputs feed different audio buses. Otherwise, proper mixing of the signals will be difficult. Check that each module is set to a different audio bus before installing it.

M450, M600, BOGEN M300 specifications

The Bogen M300, M600, and M450 are sophisticated audio products celebrated for their versatility and performance in various professional applications. These models are designed to meet the rigorous demands of commercial sound systems, featuring advanced technologies that enhance their functionality and audio quality.

The Bogen M300 is a compact mixer with a power amplifier built-in, making it an excellent choice for small venues and installations. One of its standout features is its 3-channel mixer that allows users to connect diverse audio sources, including microphones and musical instruments. This model supports both mono and stereo input configurations, ensuring flexibility for different setups. The integrated power amplifier delivers a robust output, capable of driving speakers efficiently while maintaining clear audio fidelity.

In contrast, the Bogen M600 takes it a step further with expanded capabilities. This mixer is equipped with 6 input channels, providing users with greater versatility when connecting multiple audio sources. Additionally, the M600 features a built-in equalizer, enabling users to tweak sound frequencies to suit specific environments or preferences. Its compact design allows for easy installation in various settings, from schools to conference rooms, ensuring clear communication and optimal sound distribution.

The Bogen M450 is designed for ruggedness and durability, ideal for both portable and permanent installations. This model focuses on delivering high-quality sound reinforcement, making it suitable for larger venues. With multiple input options and advanced signal processing capabilities, the M450 provides superior sound clarity even in challenging acoustic environments. The unit features various output configurations, allowing it to work seamlessly with different speaker systems, whether in high-impedance or low-impedance setups.

All three models incorporate Bogen's commitment to ease of use, with intuitive controls that make adjustments straightforward for operators. Additionally, they come with extensive protection circuitry to safeguard against overloads and ensure long-term reliability.

In summary, the Bogen M300, M600, and M450 represent the pinnacle of audio technology in their respective categories. With their unique features, remarkable build quality, and versatility, these mixers are tailored to meet the needs of various sound professionals, guaranteeing exceptional audio experiences in any application. These innovative products continue to set the standard for audio solutions in commercial environments worldwide.