Violectric PPA V600, User Manual

Page: 18 / 28

18
EQUALIZATION CURVES
Due to technical considerations, the signal stored on vinyl records has
been equalized during manufacture, i.e. low frequencies are reduced
and high frequencies are boosted. Upon playback in turn, an equalizer
as accurate as possible is employed in order to re-linearize frequency
response. There were several dozens of equalization curves in record
history, but fortunately the so-called RIAA curve (Recording Industry
Association of America) has established itself as the most common
standard. Nevertheless, one may encounter records manufactured
using NAB (National Association of Broadcasters), BBC (British Broad-
casting Corporation) or FLAT (no treble EQ) equalization curves, which
the V600 can easily cope with by means of its switching capabilities.
Furthermore, a 20 Hz highpass or 'rumble' filter according to IEC
(International Electrotechnical Commission) can be switched into circuit.
See also: technical appendix, pages 20 / 26.
Note: Setting ex works is RIAA