mlsstl;618592 Wrote: > The RIAA curve has a 40 dB swing from 20 Hz to 20,000 Hz. Heavy bass > needs a very wide groove, so the bass response is reduced up to 20 dB > when cutting the record. Highs, which don't take up much groove width, > are boosted up to 20 dB. > > During playback, this curve is reversed. The bass is boosted back up 20 > dB at 20 Hz and the highs are cut back 20 dB at 20,000 Hz. > > Without the RIAA curve, LPs would be of very short duration and have > much more high frequency noise. > > The curve was standardized in the mid-1950s and most records after that > were not too far off target. Probably a bigger wild card than the LP or > the preamp's RIAA curve is the variable response of cartridges and > their interaction with cable capacitance. Many moving coil cartridges > in particular had very interesting response curves.
Decca was still using their own curve into the early 70's... and they weren't alone. I agree regarding cartridges - anything but flat... -- 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/XP) - 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, Blue Jeans Belden Digital,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=85590 _______________________________________________ audiophiles mailing list audiophiles@lists.slimdevices.com http://lists.slimdevices.com/mailman/listinfo/audiophiles
