RECOMMENDED ENCLOSURES FOR Nobelium10, 12 and 15
VENTED ENCLOSURES
RUNNING-IN PERIOD
Allow the speaker to play for at least 15- 20 hours. After this time the performance is correct.
VENTED BOX
F3 = approximative lower frequency for vented boxes in Hz. Often called
Fb = Box resonant frequency
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 |
SEALED BANDPASS
Nobelium10 (VC:s in parallel to 2 ohm)
Vb1 | Vb2 | Port Vb2 |
20,1 | 17 | 2 x6,8 x 27,6 cm |
0,71 ft3 | 0,60 ft3 | 2 x 3" x 10,8" (US) |
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F3 Vb1: 44,8 Hz, Vb2: 86,6 Hz
Nobelium12 (VC:s in parallel to 2 ohm)
Vb1 | Vb2 Port Vb2 |
24,46 | 32,12 2 x10,2 x 27 cm |
0,86 ft3 1,13 ft3 2 x 4" x 10,6" (US) | |
F3 Vb1: 45 Hz, Vb2: 94 Hz | |
Vb1=rear chamber, Vb2=front chamber
Nobelium12 (Single VC, 4 ohm)
Vb1 | Vb2 Port Vb2 |
23,95 | 22,37 1 x10,2 x 29 cm |
0,84 ft3 0,79 ft3 1 x 4" x 11,4" (US) | |
F3 Vb1: 38,5 Hz, Vb2: 79 Hz | |
The speaker is installed in Vb1 playing into chamber Vb2 where the port(s) are installed.
SEALED ENCLOSURES
Nobelium10, single VC:
28 litres / 0,99 ft3 F3: 52,7 Hz
Nobelium10, dual VC in parallel:
17,4 litres / 0,61 ft3 F3: 73,4 Hz
SEALED BOX
Nobelium 12, single VC: | Nobelium 15, single VC: |
23,2 litres / 0,82 ft3 | 45 litres / 1,59 ft3 |
F3: 51,9 Hz | F3: 51,5 Hz |
Nobelium 12, dual VC in parallel: | Nobelium 15, dual VC in parallel: |
43,72 litres / 1,54 ft3 | 40 litres / 1,41 ft3 |
F3: 52,4 Hz | F3: 64,5 Hz |