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Power attenuator (THD Hot Plate) on Marshall 1959 Super Lead Plexi. A power attenuator, used with a guitar amplifier, is a type of attenuator that diverts and dissipates a portion of the amplifier's power to enable hearing the amplifiers high-volume characteristics at lower volume.
It is located in Seattle, Washington. It was founded in 1986 by President and CEO Andrew Marshall. At one time specializing in hand-built, vacuum tube “boutique”-style amplifiers, it continues to manufacture the “world’s best selling [guitar amplifier] power attenuator,” [1] the THD Hot Plate.
An attenuator is a passive broadband electronic device that reduces the power of a signal without appreciably distorting its waveform. An attenuator is effectively the opposite of an amplifier, though the two work by different methods. While an amplifier provides gain, an attenuator provides loss, or gain less than unity. An attenuator is often ...
The L pad attenuates the signal by having two separate rheostats connected in an "L" configuration (hence the name). One rheostat is connected in series with the loudspeaker and, as the resistance of this rheostat increases, less power is coupled into the loudspeaker and the loudness of sound produced by the loudspeaker decreases.
Smaller amps are widely used in small venue shows and in recordings, because players can obtain the tone they want without having to have an excessively loud volume. One of the challenge with the large, powerful 4x10 Fender Bassman-type amps is that to get the tone a player wants, they have to turn up the amp to a loud volume.
Audio stereo power amplifier made by McIntosh The internal view of a Mission Cyrus One hi-fi integrated audio amplifier (1984) [1]. An audio power amplifier (or power amp) amplifies low-power electronic audio signals, such as the signal from a radio receiver or an electric guitar pickup, to a level that is high enough for driving loudspeakers or headphones.
A sound attenuator, or duct silencer, sound trap, or muffler, is a noise control acoustical treatment of Heating Ventilating and Air-Conditioning (HVAC) ductwork designed to reduce transmission of noise through the ductwork, either from equipment into occupied spaces in a building, or between occupied spaces.
The Deacy Amp (pronounced "Deeky" / ˈ d iː k i /) is an electric guitar amplifier created in 1972 [1] by Queen's bassist John Deacon, who is an electronics engineer by training. The amplifier circuit board from a Supersonic PR80 portable radio found in a builder's skip (dumpster) was fitted into a speaker cabinet and powered by a 9-volt battery .