Duncan Twin Tube Classic SFX-03 Manual rápido - Página 11
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Specifications
Description – The SFX-03 is a two-channel guitar preamp employing premium
subminiature type 6021 vacuum tubes. The 6021 is manufactured to meet the
stringent MIL-E-1 specification for reliability and is optimized to provide long
service life under conditions of severe shock, vibration, high temperature, and high
altitude. The tubes are configured with a high-voltage power supply for maximum
dynamic range. True-bypass capabilities are provided to allow uncolored feed-
through.
Gain
• Before level compensation
Rhythm channel – 74dB
Lead channel – 98dB
• After level compensation
Rhythm channel – 52dB
Lead channel – 76dB
(Gain measured at 500Hz).
Nominal output level
•Rhythm channel – 0.4 Vrms (-5dBu)
•Lead channel – 0.5 Vrms (-4dBu)
(Nom. output level measured with 100mV 500Hz input signal and all
controls set to 12 oʼclock).
Max. output level before clipping – 2 Vrms (+8dBu)
(Max. output measured with all controls set fully up).
THD @ 1 Volt RMS output – 3%
Harmonic spectrum @ 1Vo – predominantly 2nd harmonic with minor amounts
of 3rd harmonic @ > 20dB below.
Noise @ output
• Rhythm channel - < 3 mV (< 3 dB hum content)
•Lead channel - < 10 mV (< 3 dB hum content)
(Noise measured with all controls set fully up and input shorted).
Power consumption – 10.4 W
External dimensions – 7.50 X 6.62 X 1.96 in. (190 X 168 X 50 mm)
Weight – 3.15 lbs. (1.43KG)
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