Hughes & Kettner TrilogyTM manual Rear Panel Connections Control Features

Trilogy™ Manual 1.1

Figure 2: Rear panel

Rear Panel Connections

2 and Control Features

2.1 Mains Socket

Trilogy™ ships in two versions rated for 110/120V and

220-240V, respectively. The rating stamped on the mains socket (figure 3) indicates the version type. Both models offer two operating voltages that are selected using the voltage selector integrated in the mains socket. Before connecting Trilogy™ to the mains power supply, ensure that the mains voltage matches the voltage rating appearing in the voltage selector window. This value is legible when the amp is in the standard operating position, that is, placed right side up.

The upright number indicates the currently selected voltage, and the inverted number indicates the alternative voltage.

Check also the fuse ratings to ensure they match the ratings indicated on the rear panel (Figure 2).

xNote:

Voltage selection and fuse replacement may be performed by experienced service technicians only. Accordingly, the following notes are addressed exclusively to service technicians!

•Use a small flat screwdriver to remove the voltage selector from the mains socket.

•If the fuse is defective, replace it with a fuse bearing the spe- cified rating.

•Turn the voltage selector and insert it back into the port so that the desired mains voltage rating is legible and appears at the top left (next to the "Voltage Setting" arrow).

2.2 Anode Fuse

This anode fuse is designed to cut the high-voltage power supply to the tubes. If it trips, the cause is usually a defective tube. A sure sign of a blown fuse is that the amp does not render a signal even though it is connected and set up properly. Before replacing the blown fuse with a 250 volt/T 630 mA replacement fuse, ensure the power amp tubes are checked for defects!

2.3 FX Loop On/Off

Connect the optional Hughes & Kettner® FS-1 one-way foot- switch to this jack. A connected footswitch disables the FX ON button on the front panel.

xNote:

A connected footswitch always has priority. The same goes for channel switching: The current status of the footswitch prevails regardless of front panel channel selector settings! The switch on the front panel is disabled and its LED indicates the status of the footswitch.

2.4 Channel Select Stageboard

This port accepts the included Hughes & Kettner® FS-4 Stageboard. The switches on this board select directly the CLEAN, CRUNCH, LEAD and ULTRA LEAD channels for added on-stage handling convenience.

2.5 FX SEND, LEVEL and RETURN

FX Send

If you wish to use an outboard signal processor, connect this jack to your effects processor's input jack.

FX Level

This switch cuts the FX SEND’s output level by 10 dB and boosts the FX RETURN’s input sensitivity by 10 dB to match the FX loop to the effect device’s input level. Press this button when using processors designed to handle instrument levels.

FX Return

Connect this jack to your effects processor's output.

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Figure 3: Mains socket

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