8 622 402 993
SEALED
BOX
VT
f3
SPL
Total box
Freq.
Mid-
volume
-3dB
band
effc’y
(l)
(Hz)
(dB)
15
50
93
30
43
93
45
42
93
60
41
93
75
40
93
trunk
44
93
VENTED
BOX
VT
f3
fB
PL
PL
SPL
Total box Freq. Port
Port
Port
Mid-
volume
tuning
tube
tube
band
freq.
length
length
effc’y
for 70
for 100
mm i. D. mm i. D.
(l)
(Hz)
(Hz)
(mm)
(mm)
(dB)
25
43
35
31.7
NR
93
40
36
35
17.6
NR
93
55
31
30
17.4
NR
93
70
29
30
14.7
28.9
93
85
25
25
15.8
NR
93
100
24
25
12.5
29.2
93
SINGLE
VENTED
BANDPASS BOX
V
T
f
3L
f
3H
f
B
V
F
V
R
P
L
P
L
SPL
Total
Freq.
Freq.
Port
Vented Sealed
Port
Port
Mid-
box
tune
front
rear
tube
tube
band
vol.
freq.
box
box
length
length
effc’y
volume volume
for 70
for 100
mm i. D. mm i. D.
(l)
(Hz)
(Hz)
(Hz)
(l)
(l)
(cm)
(cm)
(dB)
25
50
130
80
15
10
6.1
16.0
95
40
37
105
60
20
20
10.1
24.2
93
55
35
89
55
30
25
6.8
17.4
93
70
33
80
50
35
35
7.2
18.4
93
85
25
70
40
35
50
14.7
NR
90
100
21
65
35
35
65
21.0
NR
88
sealedbox - 30 l ... 75 l
ventedbox - 40 l ... 85 l
bandpassbox - 25 l ... 70 l
NR = NOT A RECOMMENDED APLICATION
VCS 12
Recommended box designs • Boxenempfehlung •
Conception recommandée des enceintes
70
80
90
100
110
20
db
50
100
HZ
200
500
70
80
90
100
110
20
db
50
100
HZ
200
500
70
80
90
100
110
20
db
50
100
HZ
200
500
