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Post by Chuck Elliot on Jul 21, 2015 10:09:41 GMT -5
The only Emotiva Class D amplifier I would have the slightest interest in would be a subwoofer amp with around 1000 watts into 4 ohms. Cheers Gary +1 I would want channel independent gain and phase control too!
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Post by rcheliguy on Jul 23, 2015 11:43:00 GMT -5
I've got the issue resolved. Room EQ is working perfectly now and driving the OPPO Ansychronous USB driver and reading from my Scarlet 2i2 USB preamp for my BEHRINGER ECM8000. Now I just need to take some time to play with it The Room EQ software controls the frequency sweeps to take measurements so the software needs to drive and listen at the same time. BTW the Golden Ear Triton 1's have 1600 watt class D amps driving their woofer section
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Post by rcheliguy on Jul 25, 2015 15:14:48 GMT -5
Getting a calibration mic and XLR to USB preamp was a worthwhile investment. Small adjustments in toe in, distance from the front wall and lateral movement paid off. Adjusting the spikes to tilt my Ethos forward also made a noticeable difference. This is what I ended up with. Considering this is a den and has zero room treatments, I'm pretty happy with it!
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Post by pedrocols on Jul 25, 2015 15:17:45 GMT -5
As long as your ears like the results is all that matters...
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Post by rcheliguy on Jul 26, 2015 6:03:53 GMT -5
As long as your ears like the results is all that matters... As the response was flattening out I would periodically listen to some of what I consider my best recorded source material to verify the sound stage was still solid and that the musicality was still very good. As the low and mid response stabilized I adjusted the bass gain down on both speakers by about 2dB leaving my left speaker at neutral 0dB and my right speaker without a room corner at +2dB. I ran about 40 frequency sweeps making small adjustments each time sometimes with just one speaker sometimes both. I optimized only for the sweet spot which feels larger now. I used to need to keep my head in a vice and now I feel like I can move around a lot more. I'm sure I was hitting some pretty big comb effect nulls before just 1' off center now I feel like I can move around within about a 3' box. The speakers are perpendicular to the floor now. Out of the box they tilt back a bit. This improves the high frequencies in the sweet spot while sitting, but reduces the high frequencies when standing. I like empirical measurement as a tool because although I had it set up pretty good by "ear balling it" as I moved the speakers around very small changes had dramatic impact. Having a graphical representation that shows you the effect of any change immediately, allows much faster and more accurate optimization.
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