-84db and 90dB seems to be in higher pitch too at least the files I grabbed ?
-84 -90 is in 3500kHz region -96 etc are in "A" something 440 region This invalidates my test, the god ol Fletcher Munson curve (aka loudness) Shows that and my test validates this, our hearing is much more sensitive at 3,5k than 440 Hz. So regarding this -90 audible from listening position And -114 dB with ear on speaker not much noise in the midrange driver I think that -102 or -108will be audible from listening position if i get 3.5 kHz files. I took out my radio shack spl meter it show 54dB dBa 1,5" from the driver. This was on Left speaker full tilt volume on my meridianG68J with the -84dB file. I use one power amp with adjustable input gain (all amps should have this) The rest have rothwell -10 dB attenuators fix to them. Correct gain scaling of your system is important, especially with digital preamps involved. Attache Fletcher munson curve. +-------------------------------------------------------------------+ |Filename: fletcher-munson.jpg | |Download: http://forums.slimdevices.com/attachment.php?attachmentid=9741| +-------------------------------------------------------------------+ -- Mnyb -------------------------------------------------------------------- Main hifi: Touch + CIA PS +MeridianG68J and assorted amps SiriuS, Classe'Primare and Dynadio speakers (including a pair of Contour 4 ) Bedroom/Office: Boom Kitchen: SB3 + powered Fostex PM0.4 Miscellaneous use: Radio (with battery) I use a Controller various ir-remotes and a Eee-PC with squeezeplay to control this ------------------------------------------------------------------------ Mnyb's Profile: http://forums.slimdevices.com/member.php?userid=4143 View this thread: http://forums.slimdevices.com/showthread.php?t=77725 _______________________________________________ audiophiles mailing list [email protected] http://lists.slimdevices.com/mailman/listinfo/audiophiles
