Alpine SWE-1243E Manual page 5

ALPINE SWE-1243E 30 cm Subwoofer
ENCLOSURE RECOMMENDATIONS
box type
sealed
vented
single vented band pass
V 1 V 2
double vented band pass
V 1 V 2
*): add additional 2,8 L for woofer!
**): calculate and add volume displacement of port(s)
formula: outer diameter [dm] square times 3,14 devided by 4, times length [dm]
ports should be rounded (aeroports)! In cases where round tubes don't fit,
channels with same cross-section (rounded at both ends) may be built.
damping: sealed encl. Fill loosely with poly-padding, vented encl.: 2 walls covered by acoustic foam.
enclosure wall thickness: MDF/Multilayer: 19 to 22 mm. Woofer screwed by metric thread knock-in nuts.
Subsonic-Filter: high pass filter of 3rd order or higher
mounting size:
woofer-displacement:
net box volume [Liter] *
free field SPL at 90 Hz [dB/Wm]
mech. power handling [Watt RMS]
low cut frequency (free flield) Flow [Hz]
net box volume [Liter] *+**
port diameter x length [cm]
free field SPL at 90 Hz [dB/Wm]
mech. power handling [Watt RMS]
high cut frequency for subsonic filter[Hz]
power handling with subsonic filter [W]
low cut frequency (free flield) Flow [Hz]
net box volume [Liter] * V1
net box volume [Liter] ** V2
port diameter x length [cm] in V2
free field SPL at 90 Hz [dB/Wm]
mech. power handling [Watt RMS]
low cut frequency (free flield) Flow [Hz]
net box volume [Liter] * + ** V1
port diameter x length [cm] in V1
net box volume [Liter] ** V2
port diameter x length [cm] in V2
free field SPL at 90 Hz [dB/Wm]
mech. power handling [Watt RMS]
high cut frequency for subsonic filter[Hz]
power handling with subsonic filter [W]
low cut frequency (free flield) Flow [Hz]
mounting hole diameter:
mounting depth:
magnet diameter:
recomm. freeplay behind magnet:
if flange gets lowered into baffle:
grinding diameter:
grinding depth:
Autogood products internet store http://130.com.ua
optimisation for: loud
-
-
-
-
32
10 x 26
92
200
28
300
42
-
-
-
-
-
-
25
7 x 32
24
2 pc. 10 x 20 2 pc. 10 x 27 2 pc. 10 x 36
93,3
250
22
300
43
282 mm
169 mm
156 mm
> 20 mm
without -
306 mm
14 mm
2,8 Liter
normal low / definition
25 34
89,5 89,2
200 200
40 36
32 55
7 x 21 10 x 34
90,3 89,5
200 230
25 24
300 300
35 27
19 30
19 18
2 pc. 10 x 34 3 pc. 7 x 39
91 88
250 250
36 27
37 45
7 x 25 7 x 36
23 23
91,6 90
250 275
22 15
300 300
34 26
with rubber gasket
312 mm
16 mm