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Revision 137 - (show annotations)
Mon Jul 11 22:38:41 2016 UTC (11 months, 2 weeks ago) by (unknown author)
File size: 1119 byte(s)
fix typo in doc
1 - about multiple instance of the same loudspeaker:
2 Two drivers in series: Re, Le, Sd, Vas and Bl double and the sensitivity is the same as for one driver.
3 Two drivers in parallel: Re and Le are halved, Sd and Vas double (Bl same as for one driver) and the sensitivity increases by 6dB.
4 Qes, Qms and Qts don't change for either combination, remaining same as for one driver.
5
6 - about Legendre bass-reflex alignment:
7 Fb = 0.3802 * pow(Qts, 1.0657) * Fs
8 Vb = 10.728 * pow(Qts, 2.4186) * Vas
9 (see: https://sites.google.com/site/francisaudio69/5-l-enceinte-acoustique/5-6-comment-calculer-une-enceinte-bass-reflex)
10
11 - about Bessel bass-refex alignment:
12 Fb = 0.3552 * pow(Qts, 0.9649) * Fs
13 Vb = 8.0707 * pow(Qts, 2.5848) * Vas
14 (see: same site as above)
15
16 - about the Zbinden M4 alignment:
17 for average baffle:
18 Volume = (2.68 * Qts - 0.45) * Vas
19 Tuning frequency = 0.41 * sqrt(1/(Qts*Qts) + 0.97) * Fs
20 the one above is used in QSpeakers.
21 for infinite baffle or car application:
22 Volume = (2.52 * Qts - 0.35) * Vas
23 Tuning frequency = 0.32 * sqrt(1/(Qts*Qts) + 3.38) * Fs
24 (see: http://www.mzbinden.ch/ventedalignments/index.html)

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