evdplancke;691686 Wrote: > I have a similar case as yours. My listening position is in a sofa close > to the wall and I loose focus when applying RC. Not sure though that a > better mic would improve that much the sound. Probably a directional > mic can help as suggested by Phil. I was also thinking about placing > some kind of absorbing material behind the mic to attenuate the > reflexion on the back wall.
I'm listening in the exact same position; my head is around 30 cm (a foot) from the wall. I installed an acoustic panel (25 mm thick) just behind. I'm using an Apex mike, omnidirectional (nearly all those mikes are made from the same W61 Panasonic capsule), pointed between the loudspeakers. In my system the sound is more focused (centered) with the DRC correction than without! What I'm saying is that the near wall position is not the cause for the focus problem, nor is the omnidirectional mike. I never heard that somebody has used a cardioid mike for speaker measurements, but I'm not an expert. Look at those results, same behaviour for all of them, Behringer is good enough. http://www.realtraps.com/art_microphones.htm , read carefully, the mikes curves ARE flat, the measured source is not. A word about my system, it is a 5 way system, tapped subwoofer horn, two direct bass drivers and horns for medium and highs, digitally crossed and time aligned BEFORE the DRC application. This system is TOTALLY flexible, even too much since I'm able to obtain the best or the worst depending of my errors. A typical error would be a phase inversion on one channel, DRC cannot correct that, the obtained filter is wrong and the sound becomes unfocused, not in phase. DRC has its limits. Evdplancke, what speakers are you using? Try different mike orientations. Check the impulse response, are both channels similar? Ask Brent from Audiolense, send him your measurements. With Audiolense it is rather easy to get good filters compared to the DRC itself. It takes me 5 minutes ;-) Chris -- krzys ------------------------------------------------------------------------ krzys's Profile: http://forums.slimdevices.com/member.php?userid=2256 View this thread: http://forums.slimdevices.com/showthread.php?t=93393 _______________________________________________ audiophiles mailing list [email protected] http://lists.slimdevices.com/mailman/listinfo/audiophiles
