Recent content by Matt76

I was able to find a better speaker placement / listening position. Here I was able to achieve the same response, 30-200Hz, of ±1dB but this time without (as far as I can tell) audible distortion. This because the worst dip to begin with (without DSP and under 200Hz), was only 5dB, so I didn't...

I did some more measurements and tweaking. I measured and EQ:ed the left and right speaker seperately this time. The average of all four measurements (left speaker from left ear position, left speaker from right ear position etc) came down to about ±1dB, 30-145Hz, with 1/12 scale smoothing. Is...

If I instead measure at both ear locations and then average those two measurements, I get a ±0.85dB, 31-146Hz, with 1/12 scale smoothing. That's with an empty room. If I average the same measurements but with me in the listening chair it is worsened significantly to ±1.8dB, 30-120Hz, with 1/12...

After upgrading to the HD version, and spending some more time on the filters, I've managed a ±0.45 dB in-room, 27-129Hz, with 1/12 scale smoothing. 129Hz is the Schroeder Frequency of my room. I figured it's best not to EQ above it. This was a single measurement, with the microphone centered...

I have no subwoofers yet and the Studio2 loudspeakers are likely not designed to handle the lowest frequencies very well. Might be best to use a high-pass filter that cuts of quite sharply at ~30Hz? The music I listen to don't have much energy below 31Hz anyway (the lowest note on 5- and...

One more thing; I'm using the headphone output to do the test sweeps, and it's an onboard soundcard on an old laptop from 2006. Should I be worried about any of this causing significant fluctuations in the measurement results?

I've noticed that with some filter settings the woofers makes a rattling sound at the beginning of the sweep (at the lowest frequencies). Is this distortion I'm hearing?

Thanks for the link. Please note though that I'm only equalizing frequencies below 150Hz or so. Shouldn't that make the measurements much more reliable, as we cannot seperate the direct sound from reflected sound at lower frequencies? We just hear the combined total, just like a microphone, at...

Greg, by "the moving microphone measurement technique" do you mean manually placing it at two or more locations, as I suggested, while I'm sitting in the listening chair?

Thanks. Is that more reliable; a single measurement where the center of my head would be (orange line)? The blue line is an average of the left and rear ear position while I'm actually sitting in the listening chair. It seem to result in two peak at frequencies where I have added boost filters...

Thanks. I tune the filters manually as I feel I get alot more precise control over the result that way. It seems the bass needs alot of boost to sound good. Even though I have now achieved a very flat bass response, of ±1.7dB, 20-125Hz, with 1/12 smoothing, the bass doesn't sound strong enough...

Hi! I just started using REW with the goal to flatten the in-room bass response of my Revel Studio2 loudspeakers. I'm using a MiniDSP 2x4 and a calibrated UMIK-1. Test signal is sent to the CD-input of my amp from the headphone jack on my laptop. Is that ok? I've been able to get the bass...