Rear panel of the BUGERA 333

Rear panel

!!CAUTION!

Hot! Risk of injury! During use, the valves get very hot and high surface temperatures may be reached at the rear of this unit. Avoid touching the controls and connectors on the rear panel during use. To avoid accidental contact with hot surfaces, place the rear panel so that it faces a wall.

23The calibrated LEVEL control determines the signal level sent to an external effects unit or any other signal processor (0 – 10). Turn the control to the right to increase the amount of signal information, and turn it to the left to decrease the amount. It makes sense to select a high setting in order to get a possibly noise-free signal. The FX Send Level and FX Return Level (26) controls should always be set oppositely. For example, to reach a 0 dB work- ing level when the FX Send Level is set low, the FX Return Level (26) needs to be set high accordingly. On the other hand, if you wish to boost the volume level, turn both controls to a higher setting.

24The SEND output is used to connect a shielded ¼" mono jack cable to the input of an external effects unit.

25The RETURN input is used to connect a shielded

¼" mono jack cable to the output of an external

en

effects unit.

 

26The calibrated LEVEL control determines the signal level returned from an external effects unit or any other signal processor (0 – 10). Turn the control to the right to increase the amount of signal in- formation, and turn it to the left to decrease the amount. To achieve a possibly noise-free signal, set the FX Send Level (23) relatively high and the FX Return Level relatively low. A BOOST effect can be achieved with this LEVEL control when the RETURN input isn’t being used. Increase the volume level with this control plus activate the FX LOOP with the footswitch in order to make the guitar signal louder. This function is great for highlighting solos.

27The 7-pin FOOTSW(itch) connector is provided to connect to the supplied BUGERA FSB104 foot- switch. Please be sure to connect the cables before switching on the amplifier. Refer to „Footswitch“ for details.

28The DAMPING switch lets you specify the damping factor of the BUGERA (only 333 and 333-212). The term „damping“ refers to a feature of the ampli- fier that affects the signal’s fade-out phase. A high damping factor (HIGH) makes the signal fade out quicker than a low factor (LOW). Changes to the damping factor automatically result in level altera- tions which should be re-adjusted.

29The IMPEDANCE switch lets you specify the loud- speaker impedance. Always apply the value that is identical to the impedance of the used speaker cabinet. When connecting two cabinets with the same impedance, the switch should be set to half the value of one of the cabinets. For example, two

16-Ohm cabinets would require an 8-Ohm setting, while two 8-Ohm cabinets need to be set to the minimum impedance of 4 Ohms. Please also read

„Wiring the BUGERA“.

!!

30Both the paralleled LOUDSPEAKER outputs (¼" mono jacks) are used to connect the speaker cabinet(s). The minimum impedance is 4 Ohms. The IMPEDANCE switch should always be set to match the impedance of the used speaker cabinet.

ATTENTION! TO AVOID DAMAGE TO YOUR !!AMP, NEVER USE THE BUGERA VALVE AM-

PLIFIER WITHOUT A LOUDSPEAKER CON- NECTED!

31This is the LEVEL control that specifies the signal level for the OUT (32) in order to adjust the level of a second amplifier and loudspeaker system con- nected over the OUT to the LOUDSPEAKER outputs (30) of one or more connected speaker cabinets.

32The OUT provides a preamp signal in order to feed the signal to a second amplifier and loudspeaker system, for example.

**

33WARNING: ONLY REPLACE THE FUSE WHEN THE MAINS CABLE HAS BEEN DISCONNECTED! The FUSE is found in the fuse holder. If the fuse is blown, it needs to be replaced with a fuse of the same kind by all means. Otherwise, the unit could seriously be damaged, in which case the warranty is void. If the fuse is blown repeatedly, you should take the unit to a qualified service technician.

**

34The IEC MAINS connector is used to connect the mains cable that has the appropriate voltage rat- ings for your country (included). At all times, make the connections to the amplifier before plugging the cable into a power outlet.

35This is the SERIAL NUMBER of the amplifier.

6

Control elements