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Speaker Box Calculations - Basic Car Audio Electronics
http://www.bcae1.com/spboxad2.htm
Qtc: Qtc is the total Q of the speaker in an enclosure including all system resistances. A Qtc of .707 is the most common and generally produces the flattest frequency response with approximately a 12dB/octave rolloff. Higher values of Qtc will give a peak in the output with a …
How to choose Qtc for new car sub enclosure? | diyAudio
https://www.diyaudio.com/community/threads/how-to-choose-qtc-for-new-car-sub-enclosure.55246/
I'm looking for some help on choosing the "best" Qtc for my new subwoofer enclosure in my pickup truck. I built my existing enclosure about 12 years ago (back in my car audio competition days ) but recently the foam woofer surrounds deteriorated.Upon removal of the box (very large--dual 6 cu ft sealed boxes), I discovered a water leak in the cab and realized …
Why QTC of .707? | DiyMobileAudio.com Car Stereo Forum
https://www.diymobileaudio.com/threads/why-qtc-of-707.117575/
The Subwoofer DIY Page - Car Audio
https://www.diysubwoofers.org/car/
The combination of these two conditions typically produces a frequency response curve that remains flat almost to DC (0 Hz). Most sealed systems designed for car audio use employ a Qtc of 0.8-0.9, to minimize box size requirements and maximize power handling, while still providing acceptable results. What about the other systems?
What is the ideal sealed qtc? Anyone have luck with an ...
https://www.diyaudio.com/community/threads/what-is-the-ideal-sealed-qtc-anyone-have-luck-with-an-aperiodic-setup.56441/
An Aperiodic vent will reduce system Qtc slightly. So, if you design for a sealed box system Qtc of 0.9, and add an Aperiodic vent to the enclosure, system QTc should drop to about 0.7. If you wanted a system Qtc of 0.9, design a sealed box for Qtc = 1.1, and add an Aperiodic vent to lower Qtc to 0.9. Larry •••
What does QTC mean? | Home Theater Forum
https://www.hometheaterforum.com/community/threads/what-does-qtc-mean.134990/
Going lower than a Qtc of .707 can give a more desired frequency response, but it's really a matter of what kind of sound the person is looking for. Honestly I'm not too knowledgeable when it comes to home theater, but in car audio you rarely see people going much lower than .7 due to cabin gain increasing low frequency output.
Examinee Login & Information on Medical Exam ... - QTC
https://www.qtcm.com/examinees/
Speaker Box Enclosure Designer / Calculator - WC Car Audio
https://www.wccaraudio.com/speaker-box-enclosure-designer-calculator
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