Thank you very much.Do you mean "narrow IR window" settings?
Mic distance needs to be close but far enough away for transducer integration - 0.5 m for small 2-way, 1 m for 3-way or small floor standing, 2 m for large multi-way floor standing - on tweeter axis or, if really close, on axis midway between tweeter and midrange driver.
In REW > IR Windows > Right Window: try values between 2 ms and 5 ms, then click on Apply Windows.
REW smoothing 1/24 oct or 1/48 oct.
Thank youUnfortunately, no one can tell you what gate settings to use in your room.....you need to take a measurement with the speaker and mic in your desired position and look at the impulse to see where the first reflection happens. When you click on the IR Windows button, don't worry about the "Left" and "Right" window setting at the top. Leave that where it's set. What you need to change is the "Left Window (ms)" and "Right Window (ms)". In order to set those right you need to make a measurement.
In my picture is an impulse from my speaker, which is on a stand and the mic is about 6 feet from the speaker. You can see I have the first reflection marked. It will be the first major blip after the initial impulse from the speaker flattens out. This is a reflection from the room, and you don't want that. In my case shown, I set the left window to about .5ms before the initial rise of the impulse and the right window to a little less than 3ms. This will set the gate and window out the room influence. The only caveat here is that since we are truncating the impulse of the speaker we can't see all the information. A 3ms gate will give you info from about 300hz up. IMO the data below 1Khz is questionable because the frequency resolution is quite low to see the detail of what's actually going on, but it will give you a good idea of the basic trend. You can't set the gate long enough to get LF data without the room swamping the response.
Hello Nate,My speakers are Synergy horns, so the mid and tweeter radiate from the same "point" in the horn. I determined the 6' because that's about as far away as I feel I can get in room and still get good data. I'd like to go outside and go 12' or so ideally.
In your case positioning between the mid and tweet 1 meter from the speaker should do it if you're trying to see how well it matches up to the manufacturer's anechoic response. 1 meter distance is typical.
Thank youIn your case positioning between the mid and tweet 1 meter from the speaker should do it if you're trying to see how well it matches up to the manufacturer's anechoic response. 1 meter distance is typical.
The direct sound of speaker is single most important in playback. Equalizing for room gain and peaks/dips for listening setup then follow, if really needed/desired.
Emphasis added.No additional smoothing is applied to above result. Dips in raw 107cm result are really what happens when reflections come into play, but human perception is much more like gated result. Only tones with significant sustain allow hearing the dips that are setup. The direct sound of speaker is single most important in playback. Equalizing for room gain and peaks/dips for listening setup then follow, if really needed/desired.
Thank youA familiar question; what are your perceptions of your speakers that you would like to change?
Those dips and peaks are pretty much followed the same, seen in the listening position graphs, other than the 5 khz drop off.
They are bi wired would this make a difference.Speaker as measured could be described as having flat response ±3dB over significant portion of spectrum. A trained eye sees ripple due to diffraction across width of front baffle. Location of peaks/dips >1kHz will likely shift as measurement point is moved off axis. Some of response is inherent to driver spacing, crossover points, and crossover slopes.
Currently i am running 2 x REL Strata 5s high level.Very little that can be done, even with very powerful processing techniques. Bass in 100Hz region could be broadly boosted; but also needs to take in considerations of subwoofer. If peaks/dips >1kHz remain fairly constant as microphone is moved off axis, some EQ is possible with equalizer with very narrow bands of control. Results are not likely to be dramatic, even if feasible.
What convinces you that you are having a problem >5k,
Used Treble Tone Tilt and PEQ.and what have you done to change this?
It improved bringing up the treble, but still remains. I tried not to use too much boost.And what happened when you attempted to change this?
Correct in the latter comment.You seek measurement techniques, yet something tells you where the problem is? Or has previous measurement convinced you that a problem exists in one place, yet experiments in this place yield no fruit?
I first thought my ears where either blocked or decreasing in the higher frequencies until i started to use REW, and realized my ears were not bad after all.As I recall, three-way speaker with dome mid and dome tweeter. These, once again in conjunction with baffle width, and these driver's distances from top edge too, and in conjunction with likely high crossover point between them lead to ripple, and comb filtering. Additionally comb filtering exists when both speaker are running, and none of this noted in literature to cause any audible effect with normal program material. Sure, sweeps, or continuous noise reveals all this with measurements, and just slowly moving about listening space