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The 2 channel audio power amplifier was the first amplifier Electrocompaniet produced. It was a 2x25 Watt Stereo power amplifier based on the works of Dr. Matti Otala on TIM-free transistor design. It has been updated and re-produced several times.
A bridge-parallel amplifier topology is a hierarchical combination of the bridged and paralleled amplifier topologies, with at least four single-ended channels needed to produce one bridge-parallel channel. The two topologies complement each other in that the bridging allows for higher voltage output and the paralleling provides the current ...
Approximately 600 of these amps were built during that time. [2] The single-channel version of the amplifier employed modest gain in the preamp stages, Baxandall type bass and treble controls, a split load phase inverter, and four 6V6GT output tubes. [3] [4] The amplifiers produce 60 watts RMS at full power, and include a half power (30/60) switch.
Most of these had Marshall layout and components, though some unusual amplifiers were made, such as a 75 watt keyboard amplifier with KT88 tubes. A 2×12-inch combo had the option of sending the first channel into the second, probably inspired by Marshall users doing the same trick with a jumper cable. [8]
Stereo amplifiers imply two channels of output (left and right), though the term simply means "solid" sound (referring to three-dimensional)—so quadraphonic stereo was used for amplifiers with four channels. 5.1 and 7.1 systems refer to Home theatre systems with 5 or 7 normal spatial channels, plus a subwoofer channel. Buffer amplifiers ...
The first 2.1 audio system from Bose to include a DVD player was the "3-2-1", released in 2001. [1] The "3-2-1 GS" model was introduced in 2003, named for its use of Bose "Gemstones" small speakers, which have two drivers pointing forward and one pointing to the side. [2] [3]