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Discussion Starter #1 (Edited)
I need to know what size wire to use on my amp and inside of the subwoofer enclosure. My amp is within 4 feet of my battery.


Amp Specs

Alpine MRV-M500 Mono V-Power Digital Amplifier

Overview
Specification

Features and Specification
SPECIFICATIONS

CEA-2006 Power Ratings

CEA-2006 Power Rating: 300W RMS x 1 (4-ohm, 14.4V at <1% THD+N)

RMS Power Ratings

Per channel into 4 Ohms: 300W RMS x 1 (14.4V at <1% THD+N)
Per channel into 2 Ohms: 500W RMS x 1 (14.4V at <1% THD+N)



Subwoofer Specs

Alpine SWS12D4

Size 12 -inch
Impedance 4 ohms
Cone Material Pulp-Kevlar
Surround Material Santoprene
Ideal Sealed Box Volume (cubic feet) 0.9
Ideal Ported Box Volume (cubic feet) 1.46
Port diameter (inches) N/A
Port length (inches) N/A
Free-Air No
Dual Voice Coil Yes
Sensitivity 86.5 dB at 1 watt
Frequency Response 26 - 200 Hz
RMS Power Range (Watts) 150-500
Peak Power Handling (Watts) 1500
Top Mount Depth (inches) 5 13/16
Bottom Mount Depth (inches) 6 5/8
Cutout Diameter or Length (inches) 10 11/16
Vas (liters) 44
Fs (Hz) 34
Qts 0.57
Xmax (millimeters) 15

Wiring diagram I followed

http://a248.e.akamai.net/pix.crutchfield.com/ca/learningcenter/car/subwoofer_wiring/1DVC_4-ohm_mono.jpg
 

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Levee
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3,210 Posts
8ga power and ground. 16ga or 14ga in box.
 

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Discussion Starter #3 (Edited)
8ga power and ground. 16ga or 14ga in box.
May I ask why you suggest those sizes? I'm actually curious how to figure it out for future reference. I think the power cables on it now are 8 ga but are like 25 feet long but my battery is only 4 feet away. Does that matter that they are that long? Also what size wire from the amp to the sub?
 
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