@paulgardner:
I had the rumble problem for quite a while. I built a suspended TT platform that is isolated from the floor and walls, using dampened springs. I also recently purchased a DBX Venue Driverack 360. I haven’t had a problem since. It incorporates a graphic, as well as a parametric EQ, with “Q” adjustments that come in very handy. The “360” has many other features that I enjoy. You can control the unit with a smartphone or laptop. ALL speaker’s phase can be adjusted from your chair, as well as ALL speaker’s timing. Of course each speaker has it’s own level control and shelf roll offs. I can even use it’s subharmonic synthesizer for deep bass, although sparingly. If you’re not familiar with this unit, it would be wise to check it out.
(I’m using two JL Fathom 113’s as subs, with my TT platform on the left side wall). Placing your TT in between or in back of your speakers will exasperate the problem even more.
I had the rumble problem for quite a while. I built a suspended TT platform that is isolated from the floor and walls, using dampened springs. I also recently purchased a DBX Venue Driverack 360. I haven’t had a problem since. It incorporates a graphic, as well as a parametric EQ, with “Q” adjustments that come in very handy. The “360” has many other features that I enjoy. You can control the unit with a smartphone or laptop. ALL speaker’s phase can be adjusted from your chair, as well as ALL speaker’s timing. Of course each speaker has it’s own level control and shelf roll offs. I can even use it’s subharmonic synthesizer for deep bass, although sparingly. If you’re not familiar with this unit, it would be wise to check it out.
(I’m using two JL Fathom 113’s as subs, with my TT platform on the left side wall). Placing your TT in between or in back of your speakers will exasperate the problem even more.