Hi guys my X-TERRA 505 came with the stock 7.5 concentric 9" and a 7.5 concentric 6" what coil should i be using in the parks or beach? And is bigger and higher better? These are the coils available?
3 kHz Concentric 9” a
7.5 kHz Concentric 9” a
18.75 kHz Concentric 9” a
7.5 kHz Double-D 10.5” a
18.75 kHz Double-D 10.5” a
18.75 kHz Double-D 10” x 5” a
7.5 kHz Concentric 6” a
18.75 kHz Double-D 6”

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