User guide

JOPLIN
384 k H z /32bit ANALOG-TO-DIGITAL CONVERTER
REVISION P R B – SEPTEMBER 2012
Copyright © 2012, M2Tech Srl
32
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Eq comparison
0
10
20
30
40
50
60
70
80
10
12,5
1
6
2
0
2
5
3
1
,
5
40
5
0
6
3
80
1
0
0
1
2
5
1
6
0
2
0
0
250
315
4
0
0
5
0
0
6
3
0
8
0
0
1
0
00
125
0
160
0
2000
2500
312
5
400
0
500
0
630
0
8
0
00
1
0
0
0
0
1
2
5
0
0
16000
20000
Hz
dB
RIAA
FFRR
Capitol
Columbia
HMV
RCA
Figure 23
To better understand the effect of using the wrong equalization curve to play a record,
Figure 24 shows the relative level versus frequency of the music on a Decca FFRR record
when it is played through a RIAA phono input of a modern amplifier.
Equalization of the signal of a Decca FFRR record being amplified by a RIAA phono
stage
-3
-2
-1
0
1
2
3
4
5
6
7
10
1
2
,5
1
6
20
2
5
31,5
4
0
5
0
63
80
100
125
1
6
0
2
0
0
2
5
0
315
400
5
0
0
630
800
1000
1250
1
6
00
2
0
00
2500
3125
4
0
00
5000
6300
8
0
00
1
0
00
0
12500
1
6
0
00
2
0
00
0
Hz
dB
Figure 24