Mod suggestion requested - NTBT preamp

[therumour]

I've got a passive Warwick RockRass with two Nordstrand MM4.2 pickups that I've added a Bartolini NTBT HR-3.3AP/918 - Active/Passive preamp to, currently 3 Pots: (Volume) (Blend) (Treble/Bass Stack).

Since I've recently destroyed my push/pull blend pot (for active/passive), I'm looking to build on the current mod. Basically I've found this ( https://bartolini.net/wp-content/uploads/Docs/PickupWiring4Conductor.pdf ). Are there any other mods possible with the addition of one DPDT switch, given I use the current (Volume) (Blend/Push-Pull Active/Passive) (Treble/Bass Stack) pot scenario?

Thanks.

 

[dwizum]

A single switch can be used for lots of functions. That Bartolini document does a good job of covering the common options - series/parallel, coil tapping, etc. Is there a specific tone you're after that you can't get now?

 

[ex-tension]

...Are there any other mods possible with the addition of one DPDT switch...

Adding two switches (one per pickup) is another option.