George Dennis The Blue Blue Beetle Reference And Owner's Manual

George Dennis The Blue™
Blue Beetle 15 W and Mighty Mouse 30 W Combo/Head
Reference and Owner's Manual
Congratulations on your purchase of a George Dennis guitar amplifier "Blue Beetle". You may have been, up to now,
aware of our company's reputation as a maker of effect pedals. Our business has been and will always remain top
quality sound. That is why introducing a line of all tube amps is only fitting, if not at all an easy task. Our engineering
and development department has been since 1996 employing the know-how of not only the fine electronics experts
but also a number of guitarists with electronics background to develop an amplifier which will most likely satisfy even
the most discriminating and fickle demands of guitar players of all styles. To meet strict industry regulations the
design has been subjected to the most comprehensive series of safety and compliance testing. Our amplifier has
passed in all areas and fully complies with both the European and American Safety, Emission and Immunity
regulations. Feel encouraged ? Good !
Both the "Blue Beetle" and the "Mighty Mouse" are very easy to operate. Both have 2 channels to your disposal, of
which each have independent volume controls. Tone controls are common for both the Clean and Lead channel while
the Lead channels have extra contour and gain controls.
Your new amplifier contains components of the best quality available today. These have been tested for a period of 1
year to assure durability and high temperature resistance. All amplifiers are hand crafted, hand assembled and tested
twice prior to shipment. The cabinets are built from the best quality 11-layer plywood ensuring sturdiness and
excellent tonal properties. The cabinets are finished with a tough vinyl coating, chosen to withstand rough road
conditions.
Notes regarding BIAS.
Your new George Dennis "Blue Beetle" has an Internally mounted and marked variable BIAS control. The tubes used
are the E 84 and these are configured as a DUET. Each pair of tubes selected from various manufacturers and
brands has a different BIAS requirement, therefore a minute alteration of overall sound may occur as the tubes age,
and the amplifiers bias can drift over time periods. In order to obtain the ultimate sound from your amplifier, the bias
adjustment should be checked periodically, in the same way as the idle of a car, for instance. BIAS adjustment
should be carried out by qualified personnel only. To ensure tone and safety we recommend original George Dennis
tubes, available through your local George Dennis dealer.
WARNING: Never remove the rear cover of an amplifier while it is connected to a power socket !! The voltages inside a
valve amplifier represent a VERY SIGNIFICANT SHOCK HAZARD.
The preamplifier tubes are three pieces of ECC 83 (12AX7 or 7025). When necessary, you can change these yourself
without worrying about BIAS.

INSTRUCTIONS FOR USE.

1. Before switching on your amplifier ENSURE you check the voltage selector on the back panel. It must be set
according to your country's voltage standard ( USA, Canada 115 V, Europe 230 V ). The correct fuse rating for the
voltage is located on the back panel. Set the master volume knob to position 0. Plug the power cord into a suitable
power socket, than press the POWER switch on the front panel to position ON. Wait approximately 2 minutes, then
press the STANDBY switch to the ON position.
Your amplifier is now ready to use.
2. Switching channels can be done either by using the foot switch or manually by pressing marked button on the
front panel. The LED lights on both the foot switch and the front panel will illuminate to show which channel has been
selected by the foot switch. Pleas NOTE: The LED mounted on the footswitch illuminates only when engaging the
LEAD channel. When the amp is in the CLEAN mode, the LED on the food switch does not illuminate.
3 You are now ready to play. We recommend that you set all the knobs on the front panel to the position 5 and all
the left-right switches to the position left, and start to experiment with the tonal capabilities of "Blue Beetle" from
there. Do not be afraid to set the controls to their extreme positions. Let your ears be the judge. You are in charge,
not the amplifier.