Eminence has a 7 year guarantee on all drivers, you select your speaker based on the size of the cabinet. Do you know what the internal volume is? Or at least outside dimensions, can guess pretty close from that. Also sealed or ported? Knowing none of that I think a DELTA 10 is what you are after. I would also look into Faital and B&C neo drivers(MarkBass uses custom B&C)
Look for the highest SPL, that is the efficiency, which is how loud your speaker is. They measure it 1 watt per Decibel at One meter, so 101spl means 101 watts gives you 10o Decibels. Anything lower that 95db is considered weak for a bass cabinet.
Also OHMS are important to at least sort of understand, you need to make sure your 4 speakers combined will give you 8 or 4 ohms, 4 ohms will make your amp pull more wattage. If you plan to combine this rig with a 15" or a 210 you should wire it as 4 ohm, and then use an 8 ohm 15 or 210, that balances everything out and your 410 will get twice the juice as the weaker cab. If you are using it alone I would go with a 4 ohm load, that is just my preference.
Combining series and parallel
Four 4 ohm speakers = 4 ohm load
Four 8 ohm speakers = 8 ohm load
Wired in parallel
Four 8 ohm speakers = 2 ohm load
Four 16 ohm speakers = 4 ohm load
Another thing to compare is the XMAX, that shows you how far the speaker can move without damage. A driver with an xmax of 5 is going to move more air than one with 3.
I just got a cabinet loaded with Delta 10's, if you love loud midrange thump, that a good choice for the money ( I have only tried them in a 210 cabinet), about $80, at 300/600 watts I think you put 1000 watts into 4 of those. A Legend BP102 will have a little more bottom end, but it won't be as loud and you won't have the mid's . If you want a very deep low end A Kappa-Pro10lf will give you that for 130$ each.
Everyone says not to mix drivers in a cabinet, but 2 Delta-10's for punch, and 2 Kappa-ProLF seems like would excellent cab.
You can find reconed PAS drivers on ebay sometimes.
Bag end uses 3 of one kind, and one of another in most of their 410's anyone know what that's about?
I'm about to have a 410 loaded with reconed Eminence 101140b drivers, I'll let you know how those compare to the Delta 10's. That is an OEM speaker used by Aguilar SDK-10 in the db series, 101140's are also used by Ampeg in SVT cabinets. You can find them used/reconed easy.
