Nobelium12
(VC:s in parallel to 2 ohm)
Vb1
Vb2
Port Vb2
24,46
32,12
2 x10,2 x 27 cm
0,86 ft
3
1,13 ft
3
2 x 4" x 10,6" (US)
F3 Vb1: 45 Hz, Vb2: 94 Hz
Nobelium12
(Single VC, 4 ohm)
Vb1
Vb2
Port Vb2
23,95
22,37
1 x10,2 x 29 cm
0,84 ft
3
0,79 ft
3
1 x 4" x 11,4" (US)
F3 Vb1: 38,5 Hz, Vb2: 79 Hz
RECOMMENDED ENCLOSURES FOR Nobelium10, 12 and 15
VENTED BOX
Sub
Connection
Volume (litre/ft3)
Port
Damping
F3
Fb
10”
VC in parallel
31,65 / 1,1
3” x 18 cm/7,1”
Line inside
39,3 Hz
39,0 Hz
12”
Single VC
34,4 / 1,21
3” x 25,7 cm / 10”
Line insida
33,7 Hz
33,0 Hz
12”
VC in series
35,87 / 1,26
4” x 29 cm/ 11,4”
Line inside
46,4 Hz
45,0 Hz
12”
VC in parallel
46,10 / 1,1
4” x 32 cm / 12,6”
Line inside
37,3 Hz
36,9 Hz
15”
VC in parallel
56,5 / 1,99
2x4” x 40 cm / 15,7” Line inside
50,2 Hz
45,0 Hz
Nobelium10, single VC:
28 litres / 0,99 ft
3
F3: 52,7 Hz
Nobelium10, dual VC in parallel:
17,4 litres / 0,61 ft
3
F3: 73,4 Hz
Nobelium 12, single VC:
23,2 litres / 0,82 ft
3
F3: 51,9 Hz
Nobelium 12, dual VC in parallel:
43,72 litres / 1,54 ft
3
F3: 52,4 Hz
SEALED BANDPASS
Vb1=rear chamber,
Vb2=front chamber
SEALED BOX
RUNNING-IN PERIOD
Allow the speaker to play for at least 15-
20 hours. After this time the
performance is correct.
F3
= approximative lower frequency for vented
boxes in Hz. Often called F-3 dB point = the point
where the power is 50% lower.
Fb
= Box resonant frequency
The speaker is installed in Vb1
playing into chamber Vb2 where the
port(s) are installed.
SEALED ENCLOSURES
VENTED ENCLOSURES
Nobelium10
(VC:s in parallel to 2 ohm)
Vb1
Vb2
Port Vb2
20,1
17
2 x6,8 x 27,6 cm
0,71 ft
3
0,60 ft
3
2 x 3" x 10,8" (US)
F3 Vb1: 44,8 Hz, Vb2: 86,6 Hz
Nobelium 15, single VC:
45 litres / 1,59 ft
3
F3: 51,5 Hz
Nobelium 15, dual VC in parallel:
40 litres / 1,41 ft
3
F3: 64,5 Hz
