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Need help with 4th Order box measurements
Hello All,
I am a noobie at building anything other then a typical slot ported sub enclosures. I am attempting to build a blow through box for my 2014 Ram 1500 quad cab. I am running 1 Skar ZVX-15v2 15" sub and want to do a 3:1 4th order blow through box. Skar said the sealed side should be 2.5cuft, ported area 4.5cuft and the port area should be 88 sq.in. He gave me sizes for a 2:1 box though. I have attached my measurements that I came up with from various calculators and the sizes include the sub, port and bracing. I have read that for a 4th order you should tune around 45hz. So that is what this is tuned for. I am also really unsure about the port size and length. Can anyone chime in and let me know what you think of what I have so far and if it will work worth a crap lol. Any help would be greatly appreciated. Thanks in advance.
Attachment 5858
Specifications
- Skar Audio ZVX-15v2 D1 - 15" SPL Car Subwoofer
- Dual 1 Ohm Voice Coil Configuration
- Peak Power : 3000 Watts
- RMS Power : 1500 Watts
- Competition Grade Pressed Paper Cone
- Stitched High Roll Foam Surround
- Massive Triple Stacked Magnet
- 3" High Temperature Copper Voice Coil
- Frequency Response : 25 - 400 Hz
- Sensitivity : 86.3 dB
- Fs : 38.0 Hz
- Re : 1.8 Ohms
- Qms : 3.8
- Qes : 0.40
- Qts : 0.38
- Nref : .27 %
- Cms : 0.03 mm/N
- Bl : 20.17 n/a
- Vas : 58.5 L
- Mms : 514 gr
- Sd : 754 cm^2
- Xmax : 29 mm
Enclosure Specifications
- Ported Volume : 4.00 ft^3
- Port Area : 55 sq.in.
- Port Length : 27"
- Tuning Frequency : 33 Hz
- Mounting Depth : 11.3"
- Cut-Out Diameter : 14"
- Magnet Diameter : 8.3"
- Subwoofer Displacement : 0.17 ft^3