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Alternatively, one rear speaker can be used on its own. This is the type of quad setup used by Seeburg jukeboxes that had quadraphonic sound. [ citation needed ] The Hafler circuit is capable of partially decoding a Dolby Surround track since both share the same operating principles (based on sound phase differences).
Download as PDF; Printable version ... move to sidebar hide. Volume control can refer to: Volume controlled continuous mandatory ventilation ... a feature on audio ...
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.
The audio emitted by the speakers is isolated inside an enclosure, aside from a number of outlets that lead towards either a rotating horn or drum. An electric motor rotates both horn and drum at a variable speed. [12] The only control common to all Leslie speakers is a dial that controls the master volume.
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This frequency is known as the free-space resonance of the loudspeaker and is designated by F s. At this frequency, the voice coil is vibrating in the speaker's magnetic field with maximum peak-to-peak amplitude and velocity. The back EMF generated by this movement is also at its maximum. The electrical impedance of the speaker varies with the ...
During the late 1920s to mid-1930s, small portable PA systems and guitar combo amplifiers were fairly similar. These early amps had a "single volume control and one or two input jacks, field coil speakers" and thin wooden cabinets; remarkably, these early amps did not have tone controls or even an on-off switch. [14]