Originally Posted by 42Plasmaman
Perhaps the speaker has good low end to shake the house with low freq. vibration but no mid range.
A lot of people think just because it vibrates the house that the subwoofer is good but if it's not tuned/EQ'd properly, then it will have peak freq's and dead spots throughout it's bandwidth. *Speaker placement can also effect these characteristis.
A good way to check is get a test disk with a sweep of freq's between 20-100hz and take measurements from the listening area with an SPL meter in 5-10hz increments .
I don't even need a meter to tell it has dips and peaks all over the place. My receiver however is a Sony, so it does not have anything like audyssey (EQ in my opinion is almost required). I might invest in a decent EQ and a meter one day soon. And yes, it does make really good SPL at its lowest at around 25hz up to around 35 or 40, but then there is about a 30hz dead spot, and then another peak at around 60-70hz, then it falls flat again all the way to its max. An EQ would probably make this sub in my setup 10x better. The way it is now, if I turn it down with volume to reduce the low end peak, the rest of it is too quiet. Those peaks, or dips however you want to view it, are messing up the sound. From what I have seen so far, this is for sure a superior HT sub over music, which I pretty much expected looking at its design.
I'm also having a problem getting the sub to match the fronts with the bass. The fronts are set at 60hz, so they they take a little of the mid bass, but on heavy bass music, the subwoofer always sounds like it's just a little behind/late. I have tried adjusting this with the distance setting in the receiver to "move" the sub towards and away from the listening position, as well as played with the phase switch with no success. It's still new, I'll just keep playing with it. Might just be room acoustics related, but I don't expect my acoustics are as bad as some. The front and rear wall is only about 5ft tall, and the upper 3-4ft are 50 degree angle ceiling (sort of in the attic), and I have plenty of angles to diffract the waves, and thick carpet, curtains on half of one wall, and a 6ft round bean bag chair in the middle of the room (maybe that helps
) Room is roughly 14x16x8 I might build some bass traps as a project over the next week or two. I will be out for 2 weeks after a surgery, and might try and do it then if I don't work myself too hard.