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i recently acquired this empty bass cab. it has 2x15 and 2x10 in one cab. i believe the original design of this cab had it wired so that you could run it stereo with the 2x15 part being driven with one amp and the 2x10 part being driven with another amp, or both being driven by one. is there an easy way for me to replicate this, or will it just be easiest to wire them separately as though they were two cabs and require the use of both outputs on an amp to drive them with one amp? i would like to sell this cab, so i'd like to have a dedicated jack for running all speakers with one amp if possible, so that people buying it won't be put off. also, i understand that the impedance will change with all speakers vs half of them, so no need to go into that. ohm's law is my friend.

You could wire a jack to a three way switch like a pickup selector.

Up=Top Speakers
Middle=Both Sets
Down=Bottom Speakers

Then have a second jack that only goes straight to one of the sets of speakers.

For example, if the second jack goes to the bottom set of speakers and you wanted to run
two amps, you'd plug one amp into jack #1 and put the switch in the "Up' position.
Then plug your other amp into jack #2.

I get that Ohm's Law is your friend but make sure to take into account, series, parallel and series/parallel wiring.