Hey y'all, looking for recommendations for a driver replacement. Guy in my band has a Hartke 1155 Combo (single 15" and a single 5"). Said it was making bad noises so I brought it home last night to check it out and the 15" is toast. Amp section is fine. Speaker out on head says: 240w @ 8 ohms 350w @ 4 ohms Gathered some specs on the cab from this old thread: 3.0 cu feet net internal 2 round ports 4" dia., 2.5" long Don't know anything about the internal crossover. Can I get some specific recommendations for good sturdy drivers? I still don't really understand what most of the numbers/stats mean on the driver info PDFs, so I need some help. The owner says this is the second time he's fried the 15" in it, so I'm gonna lecture him about amp abuse, and maybe superglue the 30hz eq slider all the way down, but anything else y'all can suggest to would be welcome. For example in the thread I linked above, Duke suggested putting longer port tubes (5") in to lower the tuning freq a touch.