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Sixteen ohm drivers (or loudspeakers systems) would be connected to the 16-ohm tap, 8 ohm to the 8 ohm tap, etc. This is significant since the ratio between the loudspeaker impedance and the amplifier's impedance at a particular frequency provides damping (i.e., energy absorption) for the back EMF generated by a driver.
Constant-voltage speaker systems are also commonly referred to as 25-, 70-, 70.7-, 100 or 210-volt speaker systems; distributed speaker systems; or high-impedance speaker systems. In Canada and the US, they are most commonly referred to as 70-volt speakers. In Europe, the 100 V system is the most widespread, with amplifier and speaker products ...
American EIA standard RS-299A specifies that (or DCR) should be at least 80% of the rated driver impedance, so an 8-ohm rated driver should have a DC resistance of at least 6.4 ohms, and a 4-ohm unit should measure 3.2 ohms minimum. This standard is voluntary, and many 8-ohm drivers have resistances of ≈5.5 ohms, and proportionally lower for ...
A high damping factor in an amplifier is sometimes considered to result in the amplifier having greater control over the movement of the speaker cone, [3] particularly in the bass region near the resonant frequency of the driver's mechanical resonance. Speaker diaphragms have mass, and their compliant suspension components have stiffness.
Block diagram of the signal-flow for a common feedback loop [1]: 118 . Audio feedback (also known as acoustic feedback, simply as feedback) is a positive feedback situation that may occur when an acoustic path exists between an audio output (for example, a loudspeaker) and its audio input (for example, a microphone or guitar pickup).
Also, the problem with straight line arrays is that the beam is far too narrow at high frequencies. A solution to utilize the best features of both arrays is to use a curvilinear or ‘J’ array. This is made up of a straight line portion and a curved portion, normally at the bottom.
Tone control is a type of equalization used to make specific pitches or frequencies in an audio signal softer or louder. It allows a listener to adjust the tone of the sound produced by an audio system to their liking, for example to compensate for inadequate bass response of loudspeakers or earphones, tonal qualities of the room, or hearing impairment.
The output impedance of a transistorized amplifier is something less than an ohm, but let's take a hypothetical 16 Ohm tube amp instead. 'Nuther safety margin. Connected to this amp, our incredibly capacitive speaker cable will cause, at 20 KHz, the loss of about 16/4000 = 0.4% of the signal.