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· Registered
75 Posts
Discussion Starter · #1 ·
amp: (already have it)
Pioneer GM-7100M

o Peak Music Power: 800 Watts
o Number of Channels: 1
o Load Impedance Capability: 2~8 Ohm
o Continuous Power (4 ohm): 250W x 1
o Continuous Power (2 ohm): 360W x 1
o Frequency Response: 10Hz ~ 240Hz
o Total Harmonic Distortion: 0.008%
o Signal-to-Noise Ratio: 100dB
o Channel # Capability: 1
o Balanced Isolator Input Circuit
o Input Level Control: Hi-Volt (200mV ~ 6.5v)
o Built-in Crossover: Selectable LPF
o Bass Level Control: 50Hz, 0/6/9/12dB

subs: (not dead set but it's what i've had my eye on)
i want to run 2
Rockford Fosgate P1S415
-15 inch SVC
-Impedance 4 ohms
-Ideal Ported Box Volume (cubic feet) 2.66
-Port diameter (inches) 4
-Port length (inches) 8
-Sensitivity 87 dB at 1 watt
-Frequency Response 24 - 250 Hz
-RMS Power Range (Watts) 50-200
-Peak Power Handling (Watts) 400
-Top Mount Depth (inches) 6 5/8
-Bottom Mount Depth (inches) N/A
-Cutout Diameter or Length (inches) 13 7/8
-Vas (liters) 172
-Fs (Hz) 24
-Qts 0.62
-Xmax (millimeters) 8

what i need to know:
-i want to build a simple rectangular ported box. if the recommended volume for one sub is 2.66, a box for both should be 5.32 cubic feet total. right?
-what frequency should the box be tuned to? i've read 33 hz should be good.
-what size port?
-how deep does it need to be in the box?
-Are the subs and amp a good match?
-subs should be fine if wired in parallel for a 2 ohm load, or no?
-tell me what needs to be done.
-if i'm missing any info that is needed, ask and you shall receive.

· just a sport with a 360
205 Posts
check RF to see if they have a chart for boxes on specific subs and specs on the subs whats the lowest ohm stable. the inside box volume could be different for a sealed and ported for those subs, if no info online then call RF customer support. theres a few places online that can calculate the box volume by the dimensions and thickness, i would recommend 3/4" mdf atleast.

im pushing 2 12s and compete with 15s hitting the same DBs and have a better bass response then a 15
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