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Hello,
In http://www.hometheatershack.com/forums/rew-forum/51192-recommended-hardware-rew-w-win-7-64-bit-family-room-setup.html I asked about hardware. I ended up with the Tascam US122MKII and a Dayton mic, calibrated by Cross Spectrum labs. I also picked up an inexpensive mic stand and clip.
The setup has worked well (insofar as it has behaved as expected).
The room in question is setup as described in this early thread here, with the sub in the corner location shown. Please note the asymmetry. Major changes are a no go (e.g. moving the main speakers to another wall); small changes (exact speaker, seating locations) are a possibility.
Mains are Ascend Sierra Towers, sub is Rythmik FV12.
I experimented with sub position by placing it in the main listening position, then running sweeps with the microphone at viable listening positions. The best one ended up being the corner, with the speaker facing toward the far side of the room.
The main speakers are ~3' from the wall behind them. The room itself, including next to the main speakers, is asymmetrical as shown in the linked thread.
I chose the crossover frequency by running sweeps and varying the crossover from 40-80 Hz. 70 Hz gave the smoothest frequency response graph. I did the same with sub phase after running audyssey, 180 degrees ended up being the setting that produced the smoothest graph.
I tried to evaluate my results based on this paper.
Everything looked pretty good except for the very low frequency decay (<35Hz) and potentially for a "peaks smooth in pattern density" in the ETC. Unfortunately my ignorance is vast here, even after reading here and elsewhere for some time.
Frequency response of both individual left, right and sub is good post Audyssey, as well as the combined result which measures +/- 4dB from 17Hz to 24kHz with 1/3 octave smoothing when I trim the sub for a flat response (my standard setup includes a bit of a house curve, at least as much as can be accomplished w/o an outboard EQ).
Inserted below are the ETC results for the left main, the first showing 40 ms after peak, the second 500 ms. This is measurement sweep #1 in the attached REW file.
Next is the same for the right main. These are sweep #2 in the attached REW file.
Next is the frequency response of the sub + both mains, smoothed to 1/3 octave. This is measurement #3 in the REW file. This shows a ~10 dB house curve.
Last is the low frequency waterfall for the same sub + both mains measurement. It exhibits significant ringing at 20 and 26 Hz.
I welcome any suggestions on both interpretation as well as reasonable measures to improve things. I think it sounds good today, but, for example, if an outboard EQ or wife approved room treatments would help appreciably, they are a potential option.
Thanks!
In http://www.hometheatershack.com/forums/rew-forum/51192-recommended-hardware-rew-w-win-7-64-bit-family-room-setup.html I asked about hardware. I ended up with the Tascam US122MKII and a Dayton mic, calibrated by Cross Spectrum labs. I also picked up an inexpensive mic stand and clip.
The setup has worked well (insofar as it has behaved as expected).
The room in question is setup as described in this early thread here, with the sub in the corner location shown. Please note the asymmetry. Major changes are a no go (e.g. moving the main speakers to another wall); small changes (exact speaker, seating locations) are a possibility.
Mains are Ascend Sierra Towers, sub is Rythmik FV12.
I experimented with sub position by placing it in the main listening position, then running sweeps with the microphone at viable listening positions. The best one ended up being the corner, with the speaker facing toward the far side of the room.
The main speakers are ~3' from the wall behind them. The room itself, including next to the main speakers, is asymmetrical as shown in the linked thread.
I chose the crossover frequency by running sweeps and varying the crossover from 40-80 Hz. 70 Hz gave the smoothest frequency response graph. I did the same with sub phase after running audyssey, 180 degrees ended up being the setting that produced the smoothest graph.
I tried to evaluate my results based on this paper.
Everything looked pretty good except for the very low frequency decay (<35Hz) and potentially for a "peaks smooth in pattern density" in the ETC. Unfortunately my ignorance is vast here, even after reading here and elsewhere for some time.
Frequency response of both individual left, right and sub is good post Audyssey, as well as the combined result which measures +/- 4dB from 17Hz to 24kHz with 1/3 octave smoothing when I trim the sub for a flat response (my standard setup includes a bit of a house curve, at least as much as can be accomplished w/o an outboard EQ).
Inserted below are the ETC results for the left main, the first showing 40 ms after peak, the second 500 ms. This is measurement sweep #1 in the attached REW file.
Next is the same for the right main. These are sweep #2 in the attached REW file.
Next is the frequency response of the sub + both mains, smoothed to 1/3 octave. This is measurement #3 in the REW file. This shows a ~10 dB house curve.
Last is the low frequency waterfall for the same sub + both mains measurement. It exhibits significant ringing at 20 and 26 Hz.
I welcome any suggestions on both interpretation as well as reasonable measures to improve things. I think it sounds good today, but, for example, if an outboard EQ or wife approved room treatments would help appreciably, they are a potential option.
Thanks!
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