evdplancke;691794 Wrote: > I am using quite old vintage AT1 speakers from PE Leon. These are two > ways bass reflex floorstand speakers and I am quite happy with them. > However, one of the tweaters has been damaged by a chair and is a > little bit disformed. Probably due to this, I noticed with Audiolense a > drop in frequency response above 13 khz on one channel that is not > corrected by the RC filter. Strange is that this drop does not seem to > have an impact on soundstage integrity without RC. > > Without RC, I have the most realistic image when my head is let say at > 30 cm from the back wall. Unfortunately, I did last measurements > further from the wall and this might be why the result is not that good > with RC. > > Another strange result is that I get a delay of 1.6 ms between > channels. Given this corresponds to a distance of 0.5m at the speed of > sound, I suspect difference in mic distance from each speaker is not > the main cause of the delay. Can phase shift between channels due to > wrong mic orientation be the cause? Again, if I have a good soundstage > without RC, wouldn't it be better not to compensate for the delay? I > will give it a try.
In my experience, if AudioLense says that there is a delay of 1.6ms on one channel then the distance from mic to that speaker is indeed 54cm greater than the distance to the other speaker... IF your mic is working properly (see other posts) its orientation should not matter at all - it is an "omni" mic. There is no "phase" involved in any of this, only sound pressure level and distance. -- Phil Leigh You want to see the signal path BEFORE it gets onto a CD/vinyl...it ain't what you'd call minimal... Touch(wired/W7)+Teddy Pardo PSU - Audiolense 3.3/2.0+INGUZ DRC - MF M1 DAC - Linn 5103 - full Aktiv 5.1 system (6x LK140's, ESPEK/TRIKAN/KATAN/SEIZMIK 10.5), Pekin Tuner, Townsend Supertweeters,VdH Toslink,Kimber 8TC Speaker & Chord Signature Plus Interconnect cables Stax4070+SRM7/II phones Kitchen Boom, Outdoors: SB Radio, Harmony One remote for everything. ------------------------------------------------------------------------ Phil Leigh's Profile: http://forums.slimdevices.com/member.php?userid=85 View this thread: http://forums.slimdevices.com/showthread.php?t=93393 _______________________________________________ audiophiles mailing list audiophiles@lists.slimdevices.com http://lists.slimdevices.com/mailman/listinfo/audiophiles
