Hi Guys I just picked up two 4ohm cabs(Carvin BRX 10.2)I found in CL. Both cabs were tested in seller's garage with his Aguilar TH500 and they sound good to me. But I am a bit concerned that he was using both 4 ohm cabs with his amp head at the same time! I thought that this would make it to be 2 ohm which is not recommend by Aguilar!? I mentioned this to him but he told me it has been fine..needless to say I am a bit confused... Is something damaged? Did I misunderstood ohm things? Thank for your help!