Your title says "subs" but you don't say if you are using one, two or more. So how many are you using?
no, just one sub
I thought a w6 is a 4ohm only setup and the amp can only push 300 watts at 4ohm where the sub is 400 rms is that healthy for the equipment?
a w3 can be ran at 2,4,6 ohm, and at 2 ohm the amp pushes 600 watts for a 300 watt rms sub
If I recall correctly, w6's are dual voice coil and can be dual 2 ohm or dual 4 ohm.
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Muscle Cars Don't Just Look Good, But They Can Sound Good Too...
1971 Chevelle SS
They're both dual voice coil subs. The W6v2 is dual 4 ohm, which will wire to either 2 ohm or 8 ohm. The W3v2 is DVC 2,4 or 6...which gives you, depending on which model you get, the wiring options of the W6v2 plus: either 1 ohm or 4 ohm with the DVC 2; either 3 ohm or 12 ohm with the DVC 6.
300 watts is healthy power for either one of those subs. The 10W3v2 DVC 2 ohm would be a good matchup, whereas you would have to run the amp at a 2 ohm load (never mind the 8 ohm option) to use the W6, which would be too much power for it.
https://www.jlaudio.com/subwoofers/10w3v2.html
https://www.jlaudio.com/subwoofers/10w6v2.html
Wiring is shown in the linked PDF manuals.
If you choose to add another sub later, you can use that amp to power two 10w3v2 DVC 2's at a 2 ohm impedance load for about 300 watts to each sub... adding about 6 decibels.
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Build the box so that it performs well in the worst case scenario and, in return, it will reward you at all times.
thanks guys ...sucks being a noob
The 10" 2 ohm DVC W3v2 will work the best with that amp. And if you want more volume in the future you can buy another and wire them to present a 2 ohm load to your amp. Each sub would then receive 300 watts continuous.
1 2 ohm DVC sub, 300 watts continuous

two 2 ohm DVC subs, each recieves 300 watts continuous

I just saw a good deal on an new JL8w7 on one of the honda forums I'm thinking of jumping on that, will it work with this amp and I never heard how an 8" sub sounds I love the sound of a 10" is it worht it?