Recent content by paul8

Yes, for those measurement for L and R sub was enabled, but since timing signal is limited in frequency and not going through sub anyway what difference would it make to exclude the sub? Acoustic reference which is L speaker would still measure same right?

I tried alignment tool with both phase and impulse, they show approximately same value, which is hard to make sense of. The mdat is attached to post #9

Which different electrical paths? REW shows near 0 delay in its IR delay measurement, yet 4ft in its alignment tool using same IR data. My question is why the difference? BTW, I flipped polarity on the sub to get more SPL at the crossover frequency, aligned again using the delay value, now the...

I'm trying to measure a new subwoofer, if I align the sub by using delay value against an acoustic reference sound wise it actually makes sense - I clearly see SPL increase, so looks like sub and speakers are aligned and SPL goes up. However looking at the REW's alignment tool at 60 Hz which is...

Too bad this approach does not match Audyssey results, neither it provides any audible difference.

Nothing special about my room, 300 sq ft, with cathedral ceilings, the speakers are against the longer wall, the mic is on the tripod on my couch at ear height.

OS itself has no business re-sending anything, my version of Linux uses ALSA sound system, which is normally transparent to applications, input and output are selected in sound settings in the OS - output went over HDMI to my Denon receiver, input is my USB audio interface with XLR mic. I have...

Attaching mdat. I doubt that the crossover would cause this on brand new speakers.

It is just 1 speaker, I'm only sending L signal, no sub involved. I also have similar measurement for R speaker, looks identical. My guess is REW just picks up room reflections.

This is step from another speaker of mine, looks more conventional to me:

I thought that second spike around 1.8 ms is from my sub, so I put my receiver into LFE only mode, and set the speaker crossover to full. I'm sending L signal only from REW so now the sub is out of picture. But the step response still looks same, the only thing I notice now is this double spike...

I tested my KEF Q950 recently, and curios of why its step response looks so unusual, looks like after initial peak there's another one at 1.5 ms. What would cause this? The attached picture is for L speaker, but R looks identical.

So, I aligned my sub using the system delay value, however when I use alignment tool at most frequencies it shows at least 2 ms difference between my fronts and the sub. What would be more accurate method for the sub alignment, the alignment tool or the system delay vs an acoustic reference?

I was able to use a Mac Mini M2 to test same REW version with my setup, and it works fine. Looks like I have problems with HDMI port in my Macbook. Thanks.

I'm using the latest REW, and experience crackling and dropping audio on Mac Pro M1 HDMI connected to my receiver. Exactly same cable is working fine with same REW version on Linux, so the cable is ruled out. So the question is, is it REW or it's my Macbook issue? Any hints? I checked REW logs...