Rear Panel Overview | Genz-Benz EL DIABLO 60 manual

23.GLOBAL VOLUME CONTROL – This knob controls the ﬁ nal output stage of the ampliﬁ er and is the master volume for EL DIABLO. It should be noted that this control is best set between the 9 o’clock and 2 o’clock positions. Each channel volume should be adjusted accordingly to achieve the desired total ampliﬁ er output. For lower volume settings, you can power the unit down to 30 watts with the PENTODE / TRIODE power level selector switch on the back panel.

24.STANDBY SWITCH – The standby switch removes the high voltage from the plate circuit of the output tubes to protect the tubes from “cathode stripping” when ﬁ rst powering up the ampliﬁ er. The recommended start-up procedure is to place the standby switch in the standby position, turn on the power switch and allow the ampliﬁ er to warm up for at least 30 seconds before switching the standby switch to the operate position. This will help to prolong the life of your output tubes.

25.POWER SWITCH – This switch turns on the AC power to the amp. When this switch is turned on, power is applied to the heater circuits of all tubes, the high voltage power supplies are allowed to stabilize and the low voltage power supplies are energized. Power should be switched on only with the standby switch in the standby position. Refer to #25 for information concerning the operation of the standby function.

REAR PANEL OVERVIEW:

1.VOLTAGE CHART – Your EL DIABLO 60 is truly a “world class” ampliﬁ er. This voltage chart is provided so that choosing the correct fusing for the desired international country is simple and accurate. The EL DIABLO’s internal power transformer can be re-wired for 100 volt use for JAPAN.

WARNING: ONLY A FACTORY QUALIFIED SERVICE TECHNICIAN SHOULD EVER ATTEMPT THIS ALTERA- TION.

2.VOLTAGE SELECTOR SWITCH - This switch changes the voltage of the AC power with which the amp will operate. 115 volts is the standard in the USA and CANADA. 230 volts is the standard for most of EUROPE and SOUTH AMERICA. Consult the voltage chart if you plan to use this amp for a different voltage other than how it was shipped from the factory so that the proper fuse can be inserted. The DIABLO 60 is rated for operation on both 50 Hz and 60 Hz power sources.

3.IEC RECEPTACLE & FUSE HOLDER – The detachable power cord should be inserted here before the cord is plugged into an AC power source. Within the bottom portion of this receptacle is a small drawer that holds the mains power fuse. An extra fuse is included in this plastic receptacle. It may be necessary to use a small tool to pry the small drawer open.

WARNINGS:

•NEVER OPEN THIS FUSE HOLDER WITH THE POWER CORD PLUGGED IN .

•USE ONLY THE FUSE VALUE AS INDICATED IN THE VOLTAGE CHART.

•NEVER ATTEMPT TO DISABLE THE MAINS POWER FUSE.

4.FOOTSWITCH INPUT – This 5 pin DIN connector is where EL DIABLO’s 4-button footswitch should be attached. A 25-foot cord is attached to the heavy-duty steel footswitch. This should provide plenty of room for the performer to get out in front of the amp. Some internal circuitry “clicking” may be heard if the amp is on when this footswitch is plugged in. This is normal and is actually part of the circuitry that provides the noiseless switching on the EL DIABLO 60. NOTE: The front panel function switches over-ride the footswitch functions. The front panel func- tion switches should be in the out position when the footswitch is used.