ENCLOSURE RECOMMENDATIONS
woofer-displacement:
box type optimisation for: loud normal low / definition
sealed net box volume [Liter] * 35 60 150
free field SPL at 90 Hz [dB/Wm] 90,2 89,1 88,7
mech. power handling [Watt RMS] 250 200 150
low cut frequency (free flield) Flow [Hz] 38 33 26
vented net box volume [Liter] *+** 50 75 100
port diameter x length [cm] 12 x 25 12 x 28 12 x 18
free field SPL at 90 Hz [dB/Wm] 92,1 90,3 89,3
mech. power handling [Watt RMS] 200 200 200
high cut frequency for subsonic filter[Hz] 30 27 25
power handling with subsonic filter [W] 300 300 250
low cut frequency (free flield) Flow [Hz] 44 33 24
single vented band pass net box volume [Liter] * V1 25 35 60
net box volume [Liter] ** V2 40 40 40
port diameter x length [cm] in V2
2pc. 10 x 17 2pc. 10 x 28
free field SPL at 90 Hz [dB/Wm] 94,2 91,6 89,6
mech. power handling [Watt RMS] 250 250 200
low cut frequency (free flield) Flow [Hz] 42 34 27
V 1 V 2
double vented band pass net box volume [Liter] * + ** V1 35 - -
port diameter x length [cm] in V1 7 x 31
net box volume [Liter] ** V2 42
port diameter x length [cm] in V2 3pc. 10 x 16
free field SPL at 90 Hz [dB/Wm] 94,6
mech. power handling [Watt RMS] 300
high cut frequency for subsonic filter[Hz] 22
power handling with subsonic filter [W]
V 1 V 2 low cut frequency (free flield) Flow [Hz] 41
*): add additional 2,1 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:
mounting hole diameter: 282 mm
mounting depth: 131 mm
magnet diameter: 134 mm
recomm. freeplay behind magnet: > 20 mm
if flange gets lowered into baffle: without -
grinding diameter: 309 mm
grinding depth: 9 mm
ALPINE SWE-1244E 30 cm Subwoofer
Интернет-магазин автозвука и автотоваров Винавто
winauto.ua
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