Tailoring tweeter output

I hav tried the long wall setup. It is the same with much more bass issues.

I have also moved the speakers 3' from side wall and this does not change much. The direct sound of the tweeters are measuring a little too hot, this is done by setting gating time low to minimize the side wall reflection.

The problem with acoustic attenuation of your tweeter's output is that any material absorptive enough to make a significant differnce down at the bottom end of your tweeter's range is going to be overly absorptive in the top octave.

Assuming were talking about the Sarastros, I would consider experimenting with maybe one inch thick open-cell foam along either side of the tweeter, cut so that the sides are V-shaped, sort of like the faceplate's angle around the tweeter diaphragm. The idea is to allow the tweeter to output unimpeded across a reasonably wide arc (maybe 90 degrees or so), and then attenuate its output beyond that arc. We want the foam to be thick enough that it will effectively attenuate energy at the lower end of the tweeter's range. I really don't know if this will work or not, and several tries would probably be necessary to fine-tune if the initial try is promising, but I think this has a better chance of making a net improvement than placing absorptive material in front of the tweeter.

Duke
dealer/manufacturer

RAAL uses 2 foam blocks to adjust radiation pattern these reduce output slightly. Maybe sim will work. But better to just use a attenuator on ribbon if its to hot near-field. Or replace loudspeaker many ribbon loudspeakers do run tweeters hot since at distance they reduce in level. I use designs with user adjustment so can be used near or normal set ups. Fostex r100t is very good for attenuation.

I understand it's an old recording engineer's trick to drape a piece of toilet paper over the tweeter to tame the high frequencies. I've tried this on a few shrill recordings, and it works pretty well. It does, though, tend to reduce not just the highs in the brightness region but also in the region above that, which adds "air" to the sound. You might give it a try. It's almost free and it's easily reversible.

If your speakers are bi-wirable, you could also insert a resistor between the bass and treble inputs.
-Bob

How far apart are the speakers?