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SI-1260 Manual - Your Electronic Warehouse
SI-1260 Manual - Your Electronic Warehouse

... level for each of the different rooms connected. Individual room volume levels can be calibrated so that all rooms have similar volume control characteristics regardless of size and acoustics and to establish a maximum volume level. This is especially useful if your system is remote controlled, or i ...
Current Source Driving High-Efficiency / Full Range - DIY
Current Source Driving High-Efficiency / Full Range - DIY

... often people using low wattage tube amplifiers with unusual looking speakers. Well, of course entertainment is full of fringe elements. A couple of years ago, Kent English and I were playing around with various ribbon tweeters, noting how the ribbons themselves seemed perfectly happy being driven by ...
Current Source Driving High-Efficiency / Full Range Loudspeakers
Current Source Driving High-Efficiency / Full Range Loudspeakers

... often people using low wattage tube amplifiers with unusual looking speakers. Well, of course entertainment is full of fringe elements. A couple of years ago, Kent English and I were playing around with various ribbon tweeters, noting how the ribbons themselves seemed perfectly happy being driven by ...
Sound Sensor BT80i - CMA
Sound Sensor BT80i - CMA

... The Sound Sensor BT80i is a microphone followed by an internal amplifier. This microphone is mounted at one end of the box. The sensor measures variations in air pressure caused by a sound wave. Because of the high sensitivity, the sensor is very much suited to detect short pressure pulses. This off ...
Op-amps Brandon King
Op-amps Brandon King

... have been improved since then, but still take advantage of op-amps’ technology. Later, in 1947, the first op-amp with 2 opposite-polarity inputs was created, one inverting, and the other noninverting. This method, created by Loebe Julie, was far superior to the previous design. Two years later, Edwi ...
Mica Sensor Board Review - University of California, Berkeley
Mica Sensor Board Review - University of California, Berkeley

... Passive RC High pass and Low pass filters ...
Lab Title - Chabot College
Lab Title - Chabot College

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DIY Kit189. 120 Second Vioce Recorder Module
DIY Kit189. 120 Second Vioce Recorder Module

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AVR-5803 - Pages - Home

... The AVR-5803 provides a Multi Zone Output function and a Select function that let you output different sources to multiple zones. Sources can be selected for output to up to 2 additional zones, in addition to the main room. Multi-room Zone 1 can have variable pre-amp output along with composite vide ...
Homework 6
Homework 6

... and not any other sounds that may have been produced by external sources. In order to achieve this goal, noise cancelling headphones include at least one microphone that listens to what you might have otherwise heard from external sources, and then feeds a signal in to your speakers that cancels (su ...
Primare R20 MM-MC Amplifier User Guide
Primare R20 MM-MC Amplifier User Guide

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AiT Semiconductor Inc. DESCRIPTION FEATURES APPLICATION
AiT Semiconductor Inc. DESCRIPTION FEATURES APPLICATION

... change, the output power keeps about the same for a given input level from VDD=5.5V to 2.5V. It allows the best use of the battery. Input filter Input filter is not required for most of the applications. However in some designs if it is necessary to reduce overall voltage gain, one can add an extern ...
Neutral Grounding Systems
Neutral Grounding Systems

... In power system, grounding or earthing means connecting frame of electrical equipment (non-current carrying part) or some electrical part of the system (e.g. neutral point in a starconnected system, one conductor of the secondary of a transformer etc.) to earth i.e. soil. This connection to earth ma ...
Comparing MOV Surge Protectors
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... are caused by HVAC systems or other appliances/systems switching on and off, overloaded circuits, or local power grid problems. When these events occur, they can be followed by surges and brown-outs, caused by multiple ...
THAT Corporation Design Note 108
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... the essential elements of voltage-controlled amplifier (VCA) and rms-level detector (RMS). Since writing this note, THAT has introduced several new models of Analog Engines, as well as new VCAs. With minor modifications, these newer ICs are generally applicable to the designs shown herein, and may o ...
MAG/EB EVO II
MAG/EB EVO II

... This provides a very versatile Equalisation section, it is simple to understand and operate, yet provides a wide degree of variation. It retains the simplicity of a three control tone section but provides the flexibility of a graphic equaliser. COMPRESSION - Adding a small amount of compression give ...
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Stage Buddy - SM Pro Audio
Stage Buddy - SM Pro Audio

... Dear Customer, Thank you very much for expressing your confidence in SM Pro Audio products by purchasing this unit. The Stage Buddy was designed to be a full-featured personal monitoring system for project and professional studios, live sound rental companies, houses of worship, schools, and fixed ...
High pipel - Future Fibre Technologies
High pipel - Future Fibre Technologies

... •    A single system protects up to 40km (25 miles) of sensor cable •    Locate intrusions to within 25 meters to 150 meters (75 feet to 500 feet) •    Simple to understand, easy to use •    Low total cost of ownership (TCO) •    Two Year Warranty •    No electronics or power in the field ...
two load line of vdb amplifier
two load line of vdb amplifier

Paper Title (use style: paper title) - Infoscience
Paper Title (use style: paper title) - Infoscience

... compensation capacitor is relatively smaller than the one in the standard miller-compensated amplifier. A major reason for the above mentioned benefits is that in cascode compensation the feed-forward path almost does not exist which improves the stability. Another benefit of the cascode compensatio ...
Advances in Natural and Applied Sciences
Advances in Natural and Applied Sciences

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Module 11
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Photovoltaic Protection (Solar Systems)
Photovoltaic Protection (Solar Systems)

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Public address system



A public address system (PA system) is an electronic sound amplification and distribution system with a microphone, amplifier and loudspeakers, used to allow a person to address a large public, for example for announcements of movements at large and noisy air and rail terminals or at a sports stadium. The term is also used for systems which may additionally have a mixing console, and amplifiers and loudspeakers suitable for music as well as speech, used to reinforce a sound source, such as recorded music or a person giving a speech or distributing the sound throughout a venue or building.Simple PA systems are often used in small venues such as school auditoriums, churches, and small bars. PA systems with many speakers are widely used to make announcements in public, institutional and commercial buildings and locations. Intercom systems, installed in many buildings, have microphones in many rooms allowing the occupants to respond to announcements.Sound reinforcement systems and PA systems may use some similar components, but with differing application, although the distinction between the two is not clear-cut. Sound reinforcement systems are for live music or performance, whereas PA systems are primarily for reproduction of speech. In Britain any PA system is sometimes colloquially referred to as a Tannoy, after the company of that name now owned by TC Electronic Group, which supplied a great many of the PA systems used previously in Britain.
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