1.3 Front Panel Features
POWER ON/OFF SWITCH: AC mains switch and high voltage in “ON” position
HV LED: Indicates the high voltage supply is ON and the fuse is intact.
BIAS L led: Indicates the Bias voltage for Left channel (Left chassis side for Mono)
BIAS R led: Indicates the Bias voltage for Right channel (Right chassis side for Mono)
OPERATE/STANDBY SWITCH: Turns filaments on in the “OPERATE” position.
1.4 Rear Apron Features
INPUTS RCA or XLR: Signal input connection via shielded interconnect cable
RCA/ XLR SWITCH: Switches between RCA and XLR input selection.
SPEAKER OUTPUT: Three- 5-way binding posts provide the signal output to the
speaker system. Red = +, 4 or 8 ohms, Black = -, ground
BIAS JACK: _” ‘phone plug’ jack for supplied cable with plug to measure the output
tube bias levels. See tube bias instruction sheet later in the manual.
BIAS POTENTIOMETER: Adjusts to achieve the bias level setting for the output tubes.
AC: 3- conductor shielded power detachable cord to AC power mains.
POWER AC FUSE: This is an over current protection fuse for the power transformer.
Never replace with any other fuse than 3 AMP SLOW BLOW!
250 VOLT! (2 AMP SLOW BLOW IN 220 VAC OPERATION)
FILAMENT FUSE: This is an over current protection fuse for the filament transformer.
Never replace with any other fuse than a 2 AMP SLOW BLOW!
(1 AMP SLOW BLOW IN 220 VAC OPERATION.)
LEFT AND RIGHT TUBE (side) FUSE: This is a protection fuse for the output tubes.
Never replace it with any other fuse than a 0.5 amp fast blow! 0.5A @ 250 volt rating.
1.5 TOP PANEL FEATURES
TRIODE / ULTRA-LINEAR SWITCHES: Three mode switches per chassis side allow
you to choose from 50 watts (100 watts mono) power in Triode mode or 100 watts
(200 watts mono) power in Ultralinear mode. All mode switches should be set to the
same ‘direction.’
RED LED: (‘Good Health LED’) Indicator for each individual output tube. When the
LED is lit it shows that the associated output tube is working.
CAUTION
EQUIPMENT DAMAGE MAY OCCUR WITH IMPROPER RATED FUSES
CAUTION
NEVER REMOVE or THE INSERT AC LINE CORD WHEN THE UNIT IS ON TO
AVOID RISK OF ELECTRICAL SHOCK