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Fosgate1
05-08-2009, 07:53 PM
is it true that a bigger box will be louder? i have a P3D415 in a sealed box 1.9 cubic inches. i talked to a box builder he told me to go 5.66cubic feet slot ported tuned to 38hertz, and i would gain a lot of SPL is this true?

SicAudio
05-08-2009, 08:03 PM
yes not sure on the specs since I wouldn't use anything fosgate if you paid me too. but 1.9 is way too small for that sub. even sealed. you want roughly at least 3 -4 ported at 35-38

FurbiesAndBeans
05-08-2009, 08:05 PM
Taken straight from the RF site:
Rec. Vented Enclosure 2.66 cu. ft. (75.32 liters)
Vented Tuning Frequency 32 Hz
Port: (1) 4" diam. x 10" long
Port: (1) 10.16 cm x 25.40 cm

Fosgate1
05-08-2009, 08:48 PM
Taken straight from the RF site:
Rec. Vented Enclosure 2.66 cu. ft. (75.32 liters)
Vented Tuning Frequency 32 Hz
Port: (1) 4" diam. x 10" long
Port: (1) 10.16 cm x 25.40 cm

so by me going to 5.66cu.ft ported tuned to 38 hertz will i be louder than the recommened sealed box.

azimuth
05-08-2009, 09:17 PM
Taken straight from the RF site:
Rec. Vented Enclosure 2.66 cu. ft. (75.32 liters)
Vented Tuning Frequency 32 Hz
Port: (1) 4" diam. x 10" long
Port: (1) 10.16 cm x 25.40 cm

those tiny little box specs seem like a way for fosgate to save on some warranty returns. if you run it through winisd, you'd probably find a far larger number. 5.66 sounds like a better number than 2.66 for a 15.

DNick454
05-09-2009, 03:49 PM
2.66 cu ft for a 15 is way too small. I'd shoot for around 5 cu ft. net with like 50 sq in. of port area, then simply tune it to whatever your listening preference is.