Inside the BUGERA 6260
Inside the BUGERA
DANGER!
**High voltage! Risk of death!
High voltages of up to 500 V DC may be present inside the casing for long periods after being disconnected from the mains. To avoid lethal electric shock, do not open the casing. There are no
The parts inside the amplifier operate at **high voltages and high temperatures. To avoid damage and injury that results from fire or electric shock, do not drop or spill
anything into the unit’s casing.
INSTRUCTIONS FOR QUALIFIED SERVICE PERSONNEL ONLY
Remove the backside of the amplifier’s casing to get to the valves and the control elements.
32These are the sockets for the 12AX7A/B/C pre- amp valves.
33These are the sockets for the 6L6 and EL34 power amp valves. Please take care that the BIAS SE- LECT switch (34) is set correctly. The BUGERA amp is supplied with 6L6GC power amp valves when it leaves the factory.
34The BIAS SELECT switch allows the amplifier to optimally adapt to the used valves (6L6 or EL34).
**
35The BIAS TEST connector lets you connect a volt- meter in order to measure the power amp valves (bias adjustment). Make sure that the voltmeter is
set to direct current (DC). | en |
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36The BIAS ADJUST control is used to make the bi- as-adjustment.
$$ Replacing the power amp valves also requires bias adjustment. You should always use sets of four matched valves. The valves of the BUGERA Series are ideal for this purpose.
CAUTION: WE HIGHLY RECOMMEND THAT !!BIAS ADJUSTMENTS BE CARRIED OUT BY
QUALIFIED PERSONNEL!
Control elements | 7 |