Get something that has a 1-2 inch adjustment up or down, try for the tweeter at ear height. OSIRIS stands can be found on audiogon at good prices, these stands are 50lbs. each with out sand or shot.
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I have found that certain monitors are more sensitive to height than others. Personally, I have usually ended up with a tweeter placement very near ear level (assuming that the tweeter was the highest driver) which is right around 36" in my current setup.
I would look for stands that will allow you to get those tweeters near your ear level.
Talk about a subject with a BUNCH of variables. Much of this will have to do with the configuration of the drivers as mounted on the baffle, the shape / angle of the baffle, your personal height and your seated listening height.
If using a "flat faced" speaker with a tweeter mounted at the top, the tweeter should be just slightly above ear level. This has do do with the fact that sound "falls off" as it travels away from the speaker. Think of the trajectory that an arrow takes if you were to launch it parallel to the horizon. It initially flys straight out and then begins to "nose-dive" towards the ground. The sound from most conventional speakers do the same thing.
If using a speaker that uses a "D'Appolito" or "MTM" arrangement ( most are on flat baffles ), the tweeter should be very near ear level. This driver configuration tends to project sound out very evenly in the horizontal plain but has limited vertical "spray". That is why it is called a "controlled dispersion" design.
If using a speaker with an angled baffle, the tweeter should be positioned slightly below the ear when seated. How far below will have to deal with the slope of the baffle and the seated distance from the speaker. Obviously, some experimentation would be required with this type of installation.
One needs to keep in mind that the height of the speaker above ground will also alter low frequency response. This has to do with "floor bounce", reinforcement and room nodes. Since the tweeters are now firing right at or very near your ears, highs tend to be accentuated. At the same time, you've lost the reinforcement that one normally obtains from having the low frequency driver(s) near the floor. The overall sound can be somewhat "lean" with optimum tweeter placement. That is, unless the designer actually knew what they were doing.
Since many products are "under-engineered" or "built to a price point", you may need to "trick" the speaker into thinking it is closer to the floor than it really is. One can do this by what we call "beards" or "baffle extensions". In its simplest form, a "beard" is simply a board that is attached to the front of the speaker or stand below the bottom of the cabinet. By changing the length and angle of the beard, you can effectively alter the amount of low frequency reinforcement and dispersion characteristics. While the end result might look "unconventional", someone that is both "handy" and "creative" can make this look at least "presentable". Building stands that incorporate a "beard" into them and then finishing them to match the speakers can really make things look nice and improve performance at the same time. Sean
Heh-Heh, 44" is my chair measurements too. I have my floorstanding speakers 48" at the tops from the floor with marble bases, 10" high in the front and 13" in the back. This gets my tweeter height at exactly 44". The rears could be higher for HT but they`re just right for 5.1 digital music! Hope this helps ya. Regards, Robin
It depends on the speaker. Ask the manufacturer, and don't listen to people who generalize from their experience with other speakers (except Sean's comments above are good because he talks about some of the variables). I have two different models of speakers designed by the same person and made by his company. With one of them, the right height is where the tweeter is at ear level. With the other, the right height is where the top of the speaker cabinet is at ear level. It depends on the speaker.
Tweeter at ear height is a good rule of thumb. However, my Revels, because of the tweeter dispersion will always do a tad better if the listeners ears are at or a little below the tweeter height. Which indicates, obviously, that this is very dependent on your speakers. I don't think you could go wrong with a tweeter-ear height match, sitting in the Kings seat. peace,warren