pro Anonym:
bedny s Beta8 a piezo k televizi.
Píšeš že v originál pdf nesjou rozměry boxu a basreflexu. Myslím že ano:

Beta8 Multi Purpose Med Vented Enclosure
By McJerry, Eminence Speaker LLC
Med Power Sat. use, 145 Watts Displacement Limit, use 150 Hz and up.
Low Power Semi-Full Range use, 75 Watt Displacement Limit, use 70 Hz and up.
Box Properties
--Description--
Name:
Type: Vented Box
Shape: Prism, square (optimum)
--Box Parameters--
Vb = 0.573 cu.ft
V(total) = 0.625 cu.ft
Fb = 64.8 Hz
QL = 7
F3 = 77.6 Hz
Fill = minimal
--Vents--
No. of Vents = 1
Vent shape = round
Vent ends = one flush
Dv = 3 in
Lv = 5.231 in

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