Originally Posted by
TimW
In my current setup with the CMT-340 SE2s there is a dip I measure in my in-room response between 100-200Hz. I have had this issue in multiple rooms with different speakers and I believe it is caused by floor bounce. With different stand heights and bookshelf speaker sizes the dip ends up in a slightly different location or severity but it is always there. Multiple subwoofers help to smooth out the frequency response below 80Hz but they don't do anything above that crossover point of course. I am really enjoying my current system but I can't help but feel like a little bit of mid-bass punch is missing, especially when I look at the measurements.
I have read that tower speakers do not have this issue or at least have it to a lesser extent. This is because most towers have multiple woofers handling bass and those woofers are at multiple heights. So while there are still floor-bounce nulls, they are spread out over multiple frequencies and one woofers null frequency will be filled by the others to result in a flatter frequency response. Much like multiple subwoofers but in the mid-bass region rather than sub-bass. I have also read about people using small 8" subwoofers for mid-bass from say 50Hz - 150Hz to bridge the gap between their subwoofers and monitors. The theory is that the small subs have a higher quality mid-bass than even a 6" mid-woofer but I believe the fact that the 8" sub sits on the floor is a large part of the benefit since it significantly reduces floor bounce.
Now currently I do own a couple of 8" DIY subs I could use to supplement my system but what I don't have is floor space to place them. They would have to sit on top of my 12" subs which would not be ideal for sound or appearances as far as I'm concerned. What would look great, and I wish I had ordered, is the TP-24 Pedestal stands. I like how my CMT-340s look on my current steel stands but if they were sitting on top of a pedestal full of mid-bass drivers that would look even better. So I'm thinking of possibly buying the TP-24 stands and modifying them to be mid-bass stands, although I doubt their construction would lend themselves to that without significant reinforcement. I was also considering purchasing some used CMT-340s and using them just as mid-bass stands, with an active crossover of course.
So I was wondering Dave, do these seem like bad ideas? Would the TP-24 stand be a good basis for modification into this sort of thing? Have you ever considered selling such a stand for turning these mini-towers into full floor standing towers?