Re: White's dfx
Most of my good relic finds have been made with the XLT and the 9.5 coil so I would suggest to use the same size coil with the DFX. The larger the coil the deeper the signal though in a site with lots of trash ( iron, house debris, etc. ) the smaller coils discriminate better. If you are in a "clean" field then use a wide quick swing with the 9.5 but if detecting a house site, use a smaller coil and slow down to listen for those faint good signals. Good luck! HH!
Mike