17
Fig. 5.1: Typical measured RIAA equalization error with both Sovtek 6H9C/6SL7GT (ST) and Tung Sol
Reissue 6SL7GT (TS) tubes, left and right channels. Error is <0.5 dB from 25 Hz – 20 kHz for all curves.
Fig. 5.2: Typical measured distortion over frequency, 560 mV RMS output level into 22 kΩ. ST =
Sovtek 6H9C/6SL7GT, TS = Tung Sol Reissue 6SL7GT
-1
-0.8
-0.6
-0.4
-0.2
0
0.2
0.4
0.6
0.8
1
10
100
1000
10000
RIAA Equalization Error, dB
Frequency, Hz
Measured RIAA Equalization Accuracy
R1(ST)
L1(ST)
R2(TS)
L2(TS)
0.001
0.01
0.1
1
10
100
1000
10000
Total Harmonic Distortion, %
Frequency, Hz
Measured THD vs. Frequency
R1(ST)
L1(ST)
R2(TS)
L2(TS)
Summary of Contents for 6SL7
Page 1: ...TAVISH DESIGN LLC Made in U S A Vintage 6SL7 Phono Stage MM MC Assembly and Setup Manual...
Page 19: ...18 Fig 5 3 Schematic sheet 1 of 4...
Page 20: ...19 Fig 5 4 Schematic sheet 2 of 4...
Page 21: ...20 Fig 5 5 Schematic sheet 3 of 4...
Page 22: ...21 Fig 5 6 Schematic sheet 4 of 4...
