|
SYSTEM |
Treble turnover |
Bass turnover |
Lower bass t/o |
Cut at 10 kHz |
Boost at 50 hz |
Flat |
flat |
flat |
|
|
|
US MID 30 |
flat |
400 Hz |
70 Hz |
- |
16 dB |
WESTREX |
flat |
200 Hz |
- |
- |
15 dB |
HMV |
flat |
250 Hz |
50 Hz |
- |
12 dB |
ffrr 1949 |
6.36 kHz |
250 Hz |
40 Hz |
5 dB |
12 dB |
Early DECCA |
5.8 kHz |
150 Hz |
- |
6 dB |
11 dB |
Columbia |
1.6 kHz |
300 Hz |
- |
16 dB |
14 dB |
BSI |
3.18 kHz |
353 Hz |
50 Hz |
10.5 dB |
14 dB |
SYSTEM |
Treble turnover |
Bass turnover |
Lower bass t/o |
Cut at 10 kHz |
Boost at 50 hz |
RIAA |
2.1215 kHz |
500.5 Hz |
50.5 Hz |
13.6 dB |
17 dB |
ffrr LP 1953 |
3 kHz |
450 Hz |
100 Hz |
11 dB |
12,5 dB |
CCIR |
3.18 kHz |
500 Hz |
50 Hz |
10.5 dB |
17 dB |
NAB |
1.6 kHz |
500 Hz |
- |
16 dB |
16 dB |
International Association of Sound and Audiovisual
Archives
http://www.iasa-web.org/
http://www.aes.org/
http://www.arsc-audio.org/
http://www.ebu.ch/en/index.php
http://www.archivists.org/
http://www2.grammy.com/GRAMMY_Foundation/Grants/
Frequency response: 18 Hz to 54 kHz (-1 dB)
Input impedance: 47 kOhm/220 pF (MM), 50/100/200 Ohm (MC)
Gain @ 1KHz: 50dB (MM), 75dB (MC)
Max out: +24 dBu
Output impedance (normal out) 50 Ohm
Load impedance (normal out): > 600 Ohm
Deviation from RIAA-curve: max. 0.5 dB
Distortion @ +10dBu out (20Hz-20KHz): 0.03%
Noise: -70dBA below 2.5mV in (MM), -70dBA below 1mV in (MC)
Channel separation @ 10KHz: > 55dB
0 dBu = 0.775 V
Balanced XLRs: Pin 1 = ground, pin 2 = hot, pin 3 = cold.
Mastering/Premastering - Overførsel af LP'er og 78 RPM