So my band was talking about possibly tuning to A for a few songs, but I was wondering about the possible issues it may cause for my gear. I have recently heard that if you push your cabs too low, they'll blow, especially if they're ported. I'm currently running a GK 410 Neo which is front ported and rated for about 30Hz, which as far as my research tells me is right about a low B's frequency. A low A is about 27Hz from what I've read, clearly below my amp's design specs. This morning I briefly tried a low A at low volume, and the amp just didn't sound right. I don't know if it was me just not being used to the A, or if the amp was legitimately having problems. So I guess what it comes down to is this: Will tuning to low A hurt my cab in any way? Just got this rig and I love it, don't want to kill it already. Thanks in advance for the input!