Increasing height of stand-mount -- what to expect


I'd like to increase the height of my stand mount loudspeakers, perhaps by putting something on the floor and then setting the spiked stands atop that piece of stone or whatever. (They are dedicated stands, so I'd not want to put something between them and the speakers.) What I'm after mostly is getting the tweeter more on a level with my ears, but I'm wondering if increasing the height of the speakers would have other effects, mucking with the bass, for example.
Yes, I know I could just try it out and listen to find out what happens, but I'm wondering if there's some rule of thumb, something to anticipate.
Thanks.
-- Howard
hodu
Can you adjust the height of your listening seat? If you temporarily try an
adjustable office chair, you could slide it around for the best integration of bass
and also adjust the height for the smoothest, most balanced sound. I would try
that first to see if you hear a difference. I have found it does, so much so that
when my 6'-5" buddy comes over, he removes the cushion of my sofa
before he sits to listen as the sweet spot is designed specifically for my ear
height.
Can you adjust the height of your listening seat? If you temporarily try an adjustable office chair, you could slide it around for the best integration of bass and also adjust the height for the smoothest, most balanced sound. I would try that first to see if you hear a difference. I have found it does, so much so that when my 6'-5" buddy comes over, he removes the cushion of my sofa before he sits to listen.
It depends on the speakers. Of course the general rule is to have your ears at the same height of the tweeters but with two particular speakers I have found this didn't work. My Silverline SR11s sounded much better with the tweeter raised a few inches above my ear. It was opposite with a pair of PMC DB1i speakers. The PMCs sounded best with the tweeter 4/5 inches lower. That was a bit of a shock.
Instead of raising your speakers try tilting them back. You can use a level so you know they are equal or you can use a drafting T. Place the T across the back of the speak with the long end pointed toward the listening seat. Looking down the T tilt the speakers so they are aimed at ear level. You can also use a laser aimed down the T.
I am not 100 percent sure on this, but I believe that any time you change the distance a speaker sits from a room boundry you are likely to change the tonal balance. The vast majority of the speakers I have owned sound different when moved only a couple of inches anywhere in the horizonal. I don't see how moving vertically would be any different. Note I said it sounded different and not necessarily better or worse. I like Rrog's idea of raking the speakers to get the tweeters pointed at your ears as a good place to start.