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What size speaker wire is safe for 5-6k watts?


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I have some cheap wire right now that i think is fake 8 gauge wire, was gonna order some new wire form down4sound, 

Certified Basshead 8G OFCSPK Wire (Blue&Clear).

 

My Salt 4 amp is OTW finally and was wondering if said wire above will do fine for 5-6k watts?  Or do i need to buy some 4 gauge wire? 

 

Use a calculator online it it says if i use 8g ill loose around 600 watts? Not sure if thats true or not.

Sundown NSV4 18"  +  Sundown SALT-4 Baby

MechMan Elite 370a  +  XS3100 - XP3000

SHCA 1/0 OFC(blue+  SMD Fuse Holders(blue)

Pioneer AVH-2440NEX  SHCA Pro RCA 

 

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8ga is fine, unless you are doing a 25ft run or something. besides, depending on what suib or subs your are using you are splitting that power over multiple wires

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I have 8ga ofc wired to my 15s about to hook to my taramps 8k, would have went bigger if subs would accept bigger , seems the md8000.1 would accept like 6gauge , the shca ofc 8 gauge is a bit smaller than terminal openings. But like said above , unless u are running a LONG run from amp to subs, 8 is plenty big enuff.

2009 Silverado 1500, 7.5" lift, 37x12.50r17s, Built Gen 4 5.3L ( 4.8l flat pistons, decked 243s, SS2 Cam, Pac 1218 springs, ported intake, 120mm TB, Long tubes, 3" duals HP tuner software tuned by me), 4l80e swapped and 4.56 gears. All done by me. stereo is Pioneer avh 600ex, all stinger rca, jp23 v1.5, skar rp150.4, and hertz hpd4. 2 SHCA 6.5 8ohm, 1 SHCA 3.5", and 1 DS18 tw120pro in each door. The 3.5 mid and 3.5" tweeters are powered by the skar rp150.4, the 6.5s are powered by the hertz bridged @4 ohms. Dual runs   of 3/0 welding cable, 300a alternator, 2 Vmax AGMs up front. current sub is a AB XR 12 ( dual 2 ohm) with bottom spider cut out in 2.25 cubes at 32hz

 

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