Originally Posted by Ed Mullen
We consider the 12 Hz tune (i.e., 2 ports plugged) to be under-ported, and therefore it's not supported with a tune setting on the Sledge amp. With that said, the Sealed amp setting employs a 10 Hz 2nd order high pass, and as such will also work fine with two ports plugged.
In a small room exhibiting a lot of room gain, the Sealed mode will probably work best, but the 12 Hz mode (i.e., 2 ports plugged and Sealed menu option) will also work. Either one will complement room gain and will result in flat extension to very deep frequencies.
excellent - didn't realise you could do this - thanks
I used to get a much flatter room response (quite small, square, relatively low SPLs) with the 10Hz tune with my BASH amp - than I have been getting with the 16hz tune on my SLEDGE amp (BASH amp failed) - and have been enjoying the SVS less since the replacement
I'm guessing the 12hz tune talked about is similar to the original 10hz tune on my PC13-Ultra with BASH ?