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The following section describes the 4.5 SE ’s basic specifications.
Specifications subject to change without notice or obligation.
-Circuit type......Single Ended-
Input Sensitivity.....750 mV for full output-
Power Output.......3.0 Watts triode/4.5 watts pentode-Total Harmonic Distortion........-3% @ Max output (output tube dependent)-
Input Impedance.........100K ohms-
Hum and Noise............1 mV-
Frequency Response..........9Hz-35kHz (-3dB), 20Hz-20kHz ( -0.2 dB)-
Tube compliment.................1-EF86 driver, 1-EL84 output-
Transformers.............1-Toroid core power transformer 1-Sowter EI laminated core SE output transformer-
Resistors..............1% Metal film, 5% Metal oxide power resistors-
Capacitors.......................Specially selected to maintian low distortion.-
AC Power requirements..........… 120/220 Volts (Selectable at rear apron)-
Warm-up time..............5 minutes-
Finish.............Polished Aluminum-
Output Impedance...........2, 4, 8 ohm. Factory preset at 8 ohms, selectable by changing transformer taps.
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