モノラル・ステレオレコードとカートリッジ・ フォノイコのマッチング

121103KN
1953
LP
(1)
(2) 1953
LP
RIAA
microgroove
EP
1948
55
1/3LP
RCA
45
(μm)
1
( 25.4μm)
1958
0.7
( 17.8μm)
50μm
70μm
25μm
2011 AUTUMN vol.33
78
SP
120 150μm
2.5
SP
( 63.5μm)
LP
1953
RIAA
Copyright© URAWA ACOUSTICS LABORATORY All Rights Reserved.
121103KN
r 25.4μm
r 16.5μm
1mil
0.65mil
45°
45°
55μm
55μm
55μm
1958
1958
25μm
(1) ortofon
SPU MONO GMMKⅡ
16.5μm
Stylus type: Spherical
Stylus tip radius : R25μm
(2) ortofon MC-Windfeld
Stylus type: Nude Ortofon Replicant 100
Stylus tip radius: r/R5/100μm
(3) Accuphase AC-5
μm×60μm
0.1mm
(4) DENON
DL-103
0.2mm
(5) DENON
DL-103R
0.2mm
16.5μm(0.65
Copyright© URAWA ACOUSTICS LABORATORY All Rights Reserved.
)
121103KN
(6) DENON
DL-A100
0.2mm
(7) Audio Technica AT33MONO
0.65mil( 16.5μm)
(8) Audio Technica AT-OC9ML/Ⅱ
0.1
ML(
)
(9) Audio Technica AT-OC9/Ⅲ
40×7μm
(10)Audio Technica AT33PTG/Ⅱ
1950
NAB
1953
Columbia/LP
ffrr
Miles Davis
1956
AES
RIAA
Old RCA
1953
Prestige
Turnover
500Hz
Roll-off
RIAA
F(Hz)
A B C
A=1 (F/2122)**2 B 1
dB
dB
(500.5/F)**2 C 1+(50.05/F)**2
10Log(A/B×C) 0.08898
2010 WINTER vol.30
RIAA
78
SP
1953
LP
EMT JPA66 ¥4,200,000
78
SP
FM Acoustic FM122 MKⅡ ¥1,522,500
FM Acoustic FM222MKⅢ ¥4,935,000
Copyright© URAWA ACOUSTICS LABORATORY All Rights Reserved.
12dB