Thanks! I really appreciate the suggestions. I'm thinking I may do this outdoors next time. It's all fun for me!First, you want the tweeter height to stay fixed at about half the ceiling height. Otherwise, your floor bounce is changing with each speaker you measure. Also, this makes for easier, more consistent measurements between speaker sweeps. From your mdats, your gate should be set to 10-11 msec. It appears you should invert the signal too.
If you do not have a SPL meter to set a level, you should set a level that is fairly high (by ear). If you do not or environment noise is high, you will not get above the noise floor and some measurements will be unreliable (as per the distortion discussion with @Juhazi). Once you find a reasonable level, should keep it the same for each speaker or cannot even do relative SPL comparisons between the speakers.
Your supplied mdats are showing 1/12 smoothing, 1/6 is a bit much. If you do the gating, should be able to do without additional smoothing, but otherwise 1/12 or 1/24 is preferred.
Did you calibrate your soundcard? If not, your measurements will be less accurate (but still can be relatively compared).
Hope this helps! Hope this does not dampen your fun too much, my wife is the fun one in our family. 
To make sure, you'd want to add the spread..I'm not sure how to interpret this, but here's the RMS average of the 14 measurements. Does this confirm room modes you mention?
View attachment 360415
Okay, give me the Revel!I thought this group would be interested in how some vintage speakers compare to each other under the same measuring conditions. I have a collection of vintage speakers and simple measuring setup. No Klippel machine for me! I measured the frequency response of each speaker with:
All of the measurement suffer from a floor bounce dip at ~80-90hz depending on the height of the woofer and mic. Sorry about that.
- Laptop PC with Creative soundcard
- REW software
- Dayton UMM-6 microphone, with calibration loaded in REW
- Random Denon amplifier
- 1 meter distance, on the tweeter axis
- 20x24 garage with hard floor and 9.5' ceiling
- Small amount of damping on the floor
Here's the setup.
View attachment 360204
Here's the collection.
View attachment 360206
Here's all the graphs together. I'll post each frequency response curve separately.
View attachment 360208
Thanks! I really appreciate the suggestions. I'm thinking I may do this outdoors next time. It's all fun for me!
IMHO the most interesting speaker of the bunchBack to a custom speaker with a Focal 6" kevlar woofer and 1" inverted kevlar dome tweeter. Time aligned baffle with removable outer frame.
View attachment 360220 View attachment 360219 View attachment 360221
This is one of the thing I make SURE is the same between speakers. Sub/Bass not so much but mids and highs YES.Here's a comparison of the two.
Or, in some locales, perhaps a Chesterfield, davenport, or divan.OK – if that’s really what you’re after, then you could as well sit on your couch and watch the whole procession from there
As well as physical design with personality.In terms of frequency response alone, speaker design was almost perfected 50 years ago.
Close, I've never heard a curve yet. Maybe a sinker sound or better it only fits in one ear and not the other. Sound travels as straight as an arrowRight, because sound is like a laser beam. Goes straight and does not deviate. Walls? Whatever.
I'm kind of at the same place as you with respect to sweet spot and room correction. But for the record, while sound does generally travel in straight lines, like all other waves, it also exhibits refraction and diffraction, meaning that those straight lines do get bent sometimes.Sound travels as straight as an arrow unless I missed something. It hits an object and a portion of the sound wave is deflected, absorbed, defused and from there every boundy has a
diminishing effect called decay.
Just keep this in mind:I'm kind of at the same place as you with respect to sweet spot and room correction. But for the record, while sound does generally travel in straight lines, like all other waves, it also exhibits refraction and diffraction, meaning that those straight lines do get bent sometimes.
That's just directivity, not dispersion or other beam-bending phenomena. Dispersion has different meanings, but in the context of wave propagation it's where group velocity is a function of frequency, and gives rise to refraction. However HiFi folk seem to have adopted it to mean directivity, which I don't think OldHvyMec was really talking about.Just keep this in mind:
Speaking of dispersion, it is addressed in this thread:
Select dispersion pattern
Which dispersion pattern had you chosen? If we play with the idea that you would use a waveguide. Choose vertical and horizontal dispersion and feel free to justify your choice. For inspiration here you can see different waveguides...audiosciencereview.com