In our Unbucker, we wind the screw coil stronger than the slug coil. This makes the pickup sound a little more single coil, but the best reason to do this is for coil tapping. When tapped the stronger coil is active as opposed to half a pickup. Our best selling set of these is 7.5K neck (4.5-3) and 8.5 Bridge (5-3.5) 3 conductor lead with a Vintage Hot reverse middle in-between. (Humb.-single-Humb.).
Combining the two coils gives a total ohm reading or approximate output to compare to normal humbuckers.
High Output Humbucker: More power, Longer sustain and Faster grind. Wound with 43 gauge wire from 12.5K to 13.5K with ALNICO IV magnets. This set taps very well, and also tolerates being turned down on the volume control. Read "Musician's Hotline" review of this pickup here