Telephone Paging Control, Alc | Bogen GS-100, GS-150, GS-60, GS-250

Operation

Telephone Paging Control

The MIC 5/Tel volume control on the front panel con- trols the volume of the telephone paging input when the control is set to the Tel mode (See page 6 for infor- mation on setting the Tel input mode).

The Tel input mode uses voice activated triggering for muting the AUX inputs and automatic level control for providing constant paging level. To optimize Tel input performance the ALC control may need to be adjusted.

ALC

The telephone page input features an automatic level control (ALC) which compensates for different voice levels and speaking styles of the individuals using the system. The amplifier is shipped with this control in the OFF (max. counterclockwise) position.

To adjust the ALC:

1.Rotate the MIC 5/TEL and MASTER controls to the highest level likely to be used.

2.Speak softly and distinctly into the telephone mouth- piece while adjusting the MIC 5/TEL volume control to the desired output level.

3.Speak in a loud voice directly into the telephone mouthpiece while rotating the ALC control clockwise to the point where the output of the amplifier is reduced to the same level as that obtained in Step 2.

4.The MIC 5/TEL and MASTER controls can be used to vary the overall volume without upsetting the ALC adjustment.

VOX

The telephone page input features voice activated Aux muting. This feature always mutes AUX 2 and only mutes AUX 1 when the AUX1/MIC 6 is set in that position.

The VOX control should be set so that only the desired signal is above the threshold level, while unwanted noise or signal is below it.

To adjust the sensitivity of the circuit:

1.Rotate the VOX control fully clockwise. While mak- ing a public address announcement and talking at a low level, the sound should not be choppy or miss- ing parts of words. If it is choppy or intelligibility is poor, rotate control counterclockwise to the point where the sound is clear and crisp (but not to the maximum counterclockwise position).

2.If the background music shuts down when no page is in progress, rotate the control counterclockwise until the music will not shut down when no page is in progress.

VAR MUTE

The VAR MUTE control mutes the Aux input(s) only during telephone pages.

The control allows the user to select from 4 levels of muting: 1 = -60dB, 2 = -21dB, 3 = -10dB, 4 = 0dB.

GS-35, GS-250, GS-100, GS-60, GS-150 specifications

The Bogen GS series offers a variety of versatile and efficient amplifiers tailored for different audio applications. Among the models in the series are the GS-250, GS-100, GS-35, GS-150, and GS-60, each providing unique features suited for various environments, such as schools, auditoriums, and commercial settings.

The Bogen GS-250 is a robust amplifier, delivering a powerful output of 250 watts. Its key feature is its built-in 5-input mixing capability, allowing for seamless integration of multiple audio sources. The GS-250 incorporates advanced thermal protection and a low-impedance output, ensuring reliable performance even under strenuous conditions. This model also supports both 70V and 4Ω speaker configurations, making it adaptable for a wide range of installations.

Next in the lineup is the GS-100, which outputs 100 watts and is designed for medium-sized venues. It features a straightforward front-panel interface with volume controls and indicator lights for easy operation. The GS-100 is equipped with two auxiliary inputs, enabling users to connect additional devices, such as microphones or digital audio players, while its built-in paging capabilities make it suitable for announcements in public spaces.

The GS-35 is a compact model with a 35-watt output, ideal for small rooms or personal use. This amplifier includes a single microphone input with an adjustable volume control, making it user-friendly for educational settings or small business environments. Its lightweight design allows for easy transportation and installation, offering a practical solution for localized sound needs.

For slightly larger applications, the GS-150 offers 150 watts of power. This model is equipped with multiple inputs, including dedicated microphone and auxiliary options. An important feature of the GS-150 is its user-adjustable tone control, providing flexibility to tailor sound quality based on the acoustics of the environment. Additionally, it supports both high-impedance and low-impedance systems.

Finally, the GS-60 rounds out the series with its 60-watt output, perfect for smaller venues. It boasts a simple setup with an intuitive interface, catering to users who may not be audio professionals. The GS-60 combines affordability with quality sound reproduction, making it a popular choice for businesses looking to enhance their audio capabilities without breaking the bank.

In summary, the Bogen GS series offers a comprehensive range of amplifiers that cater to various needs, characterized by robust power outputs, multiple input options, and user-friendly interfaces. Each model is designed with reliability in mind, ensuring consistent performance in diverse audio environments.