Millennia LOCi, Owner'S Manual

Page: 10 / 16

Page 10 of 16
Millennia Media, Inc. 4600 Missouri Flat Road, Suite 11 Placerville, CA 95667
http://www.mil-media.com (530) 647-0750 Fax (530) 647-9921
Legacy Recordings EQ
The 78 RPM record was a standard format for
decades, followed by 33-1/3 RPM. While 33 RPM
“LP” records produced after 1954 almost
universally follow the EMI or RIAA standards,
compensation curves used for 78 RPM records
varied significantly between manufacturers and
era. Via historical research and empirical testing,
audio engineers have attempted to classify the
myriad of legacy equalization formats.
The following chart lists a small sampling of
various EQ curves which have been derived from
papers, audio journals, jacket information on
early LPs, experimentation, and other sources
for records made generally between 1925 and
1955. The audio engineer should use these
numbers as a guide only. Ultimately, use your
ears as the final reference for correct
compensation on legacy formats.
SOURCE SERIES
TURNOVER
(Hz)
ROLLOFF (dB @ 10
kHz)
Acoustic Recording (such as
cylinders, etc.)
0 (or as
required)
0 (or as required)
“AES”
standard
400 -12
AFRS Transcriptions 500 0 or -5
Allegro 750 -16
Allied 500 -16
American Recording Society 500 -12 or –13.7
Angel 500 -12
Arizona 400 -12
Artist 500 -16
Atlantic 500 -16
Audiophile 300 -8
BBC Transcriptions 1949 500 -5
BBC Transcriptions most 250-300 0 to -5
Bach Guild 501-529 500-750 -16
Banner adjust as required 500 -16
Bartok 629 -16
Bartok 301-304, 309, 906-920 700 -16
Berliner speed = 71.29 RPM 0 0
Blue Bird 800 -10
Blue Note Jazz 400 -12
Boston COL* -16
Brunswick rare 1000 -8.5
Brunswick from 1946 300 -16
Brunswick early 300-500 0 or -16
BSI 353 -10.5