Applications, Room Equalization | TOA Electronics 1000 Series

Applications

Feedback Prevention

When the overall gain of a sound system is increased,

feedback will occur at frequencies where the system response has peaks. Suppose the system has an

uneven frequency response like that shown in the

following diagram. The frequency at which feedback will occur when gain is increased is about 500Hz. In this case, feedback may be prevented by attenuating

levels at 500Hz by 3dB to 5dB with the E-1231. If the overall gain is again gradually increased, feedback will occur next at about 125Hz. It may be stopped by attenuating the levels 2dB to 3dB at that frequency. In

this procedure, sufficient gain in the sound system is

obtained before feedback.

Sound Pressure Level
Room Equalization				Frequency
Room Equalization
In a sound reinfocement system for a room, the clarity					sound clarity.
of sound can be adversely affected by				the room	For example, suppose that there is a room frequency
frequency response including standing waves (room					response as shown below.
resonances), reflections	of	sound,	and	relations	The equalizer sliders are set as shown below.
between direct and indirect sound.					The overall response after equalization
The E-1231 is an effective	tool to equalize			the room	will then be as follows.
frequency response to a	flat	response	and improve
Sound Pressure Level
				Frequency
The equalizer sliders are set as shown below.

The overall response after equalization will then be as follows.

	Frequency response	Frequency response
Before equalization	of equalizer	after equalization

Sound Pressure Level

Frequency

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1000 Series specifications

TOA Electronics has long been recognized as a leader in the audio and public address systems industry, and their 1000 Series amplifiers exemplify this reputation for excellence. Designed for versatility and high performance, the 1000 Series offers a blend of advanced technologies and user-friendly features, making it an ideal choice for various applications ranging from commercial installations to live sound settings.

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The 1000 Series amplifiers are designed with user-friendly interfaces, featuring intuitive controls that simplify operation. LED indicators provide real-time feedback on system status, ensuring users are always informed about performance metrics. Additionally, the series is built with rugged construction standards, making it suitable for both permanent installations and portable applications.

In summary, the TOA Electronics 1000 Series amplifiers combine power, flexibility, and reliability into a single package. With advanced technologies that enhance sound quality and ease of use, this series is an excellent choice for anyone needing a robust audio solution for their venue, event, or project.