Q

1. Q:-The ratio of reactance to resistance in a series circuit, or the ratio of resistance to reactance in a parallel circuit.
Submitted on Wednesday, January 07, 2009 5:55:04 PM

2. Q or Quality Factor:
Is a measure of damping. Modern home speaker systems have Q values ranging from < .5 to approx. 2.0. Q values < .7 have no peak in the response. Q values around .5 are considered to be optimally damped, having a Bessel response. A Q of 1.0 is a Butterworth response. The lower the Q value, the better the transient response of the system, (less or no ringing), but the tradeoff is a larger required box size and the response begins to rolloff at a higher frequency. Another way to consider it is that the lower the Q, the more gradual the rolloff but the rolloff begins at a higher frequency.
Submitted on Monday, December 06, 2010 5:55:04 PM

3. Qes
Definition:The Q of a speaker driver at its free air resonance considering only its electrical losses.
Submitted on Monday, October 06, 2008 5:55:04 PM

4. Qms:
The Q of a speaker driver at its free air resonance considering only its mechanical losses
Submitted on Saturday, January 03, 2009 5:55:04 PM

5. Qtc
Definition:The total Q or resistance of a woofer and sealed enclosure at the system's resonance frequency, considering all resistive losses. A Qtc of .7 has smoothest response and the lowest resonant frequency response. A Qtc of above 1.1 should only be used by those who prefer a "boomy" response.
Submitted on Sunday, August 24, 2008 5:55:04 PM

6. QTS-The total resistance in a series or parallel circuit. This takes into account all Driver resistances, both electrical and mechanical.
Submitted on Saturday, September 11, 2010 5:55:04 PM

7. Quantization-The process of converting, or digitizing, the almost infinitely variable amplitude of an analog waveform to one of a finite series of discrete levels. Performed by the A/D converter.
Submitted on Monday, September 01, 2008 5:55:04 PM

8. Quantization error
Definition:Error resulting from quantizing an analog waveform to a discrete level. In general the longer the word length, the less the error.
Submitted on Monday, July 05, 2010 5:55:04 PM

9. Quasi-Parametric
Definition:A type of equalizer. A quasi-parametric (also known as "semi-parametric") EQ will allow control over the frequency and gain of each band of equalization, but not the number of frequencies controlled (bandwidth). The midrange EQs on mixing consoles are often quasi-parametric. More flexible in some ways than a graphic EQ, a quasi-parametric EQ does not offer the full range of adjustment found in a fully parametric design.
Submitted on Thursday, April 15, 2010 5:55:04 PM

10. Quick Release (terminal)
A means for securing a wire conductor to a terminal connector that permits easy attachment and removal. In the usual form, this will involve a spring-loaded clip, which needs only to be pressed to either secure or detach a cable end.
Submitted on Friday, June 18, 2010 5:55:04 PM

11. Quiescent Current
Definition:The term given to describe the amount of current consumed by a circuit when it is not performing any work (sometimes referred to as standby current).
Submitted on Monday, April 20, 2009 5:55:04 PM

12. Quiet background
about 35 dB
Submitted on Wednesday, July 16, 2008 5:55:04 PM

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