It would be helpful if you clicked the "show legends" so bottom of plot shows what lines represent. What does blue and green line represent? I was looking for woofer only, full range only, and woofer + full range.
The blue or green, if combined woofer+fullrange does not seem to go low enough to represent woofer contribution.
If I may suggest, you should move your crossover much higher, say, 400Hz to 500Hz. It will reduce the cone excursion on your full range and reduce distortion and sound much cleaner. Also, the Harsh XO delay needs to be 1/2 the cycle period of the XO frequency so at 100hz XO that is 5ms delay vs 1.25ms delay at 400Hs (much smaller) and will give better chance for integration.
What is distance from back of woofer cone to back wall of cabinet? 9.61inches? If so, that 700Hz is the cancellation dip from back wall reflection. Add thick 1in open cell eggcrate foam or 1/2in real wool felt on back chamber walls, or 2in fiberglass batting, and throw in some polyfill or fiberglass in space in between.
The blue or green, if combined woofer+fullrange does not seem to go low enough to represent woofer contribution.
If I may suggest, you should move your crossover much higher, say, 400Hz to 500Hz. It will reduce the cone excursion on your full range and reduce distortion and sound much cleaner. Also, the Harsh XO delay needs to be 1/2 the cycle period of the XO frequency so at 100hz XO that is 5ms delay vs 1.25ms delay at 400Hs (much smaller) and will give better chance for integration.
What is distance from back of woofer cone to back wall of cabinet? 9.61inches? If so, that 700Hz is the cancellation dip from back wall reflection. Add thick 1in open cell eggcrate foam or 1/2in real wool felt on back chamber walls, or 2in fiberglass batting, and throw in some polyfill or fiberglass in space in between.
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Thanks. Tes it's a Pass SLOB. The woofer is Eminence Beta 15. The mic is .5 meter. away from the FR driver. Won't get much bass response in that position though. After my wife heads out I'll get set up and make all new measurements. I have bass traps in corners behind the speakers I'll remove.
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That's better but I don't know why you have so many dips. Are you 19in away from full range cone axis and using Frequency Dependent Window (FDW) feature in "IR Windows" tab? Set to 6 cycles FDW. That removes effects of room reflections so we can see intrinsic vs extrinsic properties of the speaker.
You appear to be near my neighborhood. Maybe you would like to
drop me a line. (I have Jordans too...)
@mkane77g,
If XO point target still is 80Hz you not there yet, have traced your post371 graphs below but think the better is drop Nelson Pass a line.
Down the road xrk971 advised raise XO point which is probably right, on the other hand if mid-tweeter is okay distortion wise cover a 80Hz BS2 roll off and you for example seal its back because I'm not shure OB will work, then see below how vertical power response will start begin act as real one point source going from 1/4 wave length center to center distance down to 1/8 wave length and you close to 1/8 wave length looking at your previous sketch.
About achieved sound stage probably you need to exercise more down the road and get closer to target curves based on trustful good measurement else one can end what critics often call sound is as a DSP speaker, but DSP can sound as analog as other setups except there is normal some other damping effects in place for drivers motor when its connected directly to a power amp, and in DSP world nit picking XO slopes is free and don't cost new components.
If XO point target still is 80Hz you not there yet, have traced your post371 graphs below but think the better is drop Nelson Pass a line.
Down the road xrk971 advised raise XO point which is probably right, on the other hand if mid-tweeter is okay distortion wise cover a 80Hz BS2 roll off and you for example seal its back because I'm not shure OB will work, then see below how vertical power response will start begin act as real one point source going from 1/4 wave length center to center distance down to 1/8 wave length and you close to 1/8 wave length looking at your previous sketch.
About achieved sound stage probably you need to exercise more down the road and get closer to target curves based on trustful good measurement else one can end what critics often call sound is as a DSP speaker, but DSP can sound as analog as other setups except there is normal some other damping effects in place for drivers motor when its connected directly to a power amp, and in DSP world nit picking XO slopes is free and don't cost new components.
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Bet it is and my real reason for using REW and feed it target curves over from Rephase is had to stop some where use time and educate oneself into more software packages.
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MANY thanks for your answer. I now feel a little stupid, because I haven't considered to align the impulses. I guess this would make a substantiel improvement when making the filters in Rephase!?
In Rephase are your settings at the "centering" the one that is standard ie:
Centering: "middle" and "use closest perfect impulse"
Or will this step actually "misalign" the impulses IF one already does this in REW.
Yes standard settings in the two "centering" dialogs.
