MrSkippyJ

What kind of speakers? where are you going to put them?

Most component set passive crossovers don’t include a high pass for the midwoofer. I would check to make sure but it’s likely you need to high pass the amp’s output.

Looks like the lp side of the switch says lp-bp. I would assume that to mean that is the bandpass side you want.

what he said!!

Ah well. I was going to suggest some rather large dowels but they would need to be glued.

Do you need it to come back apart?

Will it power it? Yes. Certainly won't hurt anything. No sure exactly what you mean by "scared of the sound quality to go with the 2 ohm version"

I think those are D4 subs.

If you are using the rf1500s then you don’t have 2 channel amps. They are single channel and the only wiring that makes any sense for you at all is wire the coils in parallel. One amp per sub.

Have you tried without the bass knob connected at all?

when do you hear this? Does it change with volume?

a wee bit, yeah.

Hello stranger!!

lol it was a rough estimate

These days my motorcycle has the audio upgrades. Haven’t had anything in my truck since sometime in 2017z