Diezel Schmidt, Руководство пользователя

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Chapter Five: Power Amplifier
5.1 Tone and Volume of the Power Amplifier
5.1.1 Channel Volume
As the name suggests, this controls the overall, volume of the amplifier’s channel.
The more the channel volume is increased, the higher the rate of power amp
warmth (until power amp distortion is achieved) will be.
5.2 Power Amplifier Tubes
5.2.1 Function
As the name suggests, the power amp section is the part of the amplifier that
produces output power, measured in watts. Preamp signals are sent to the
poweramp(s), which amplifies this signal to a level that is acceptable for
loudspeakers. Guitar amplifiers utilize several different types of power amps, which
differ in output power and tone. We chose the tube type power amplifier for its tried
and true performance and familiar tonal behavior.
5.2.2 Selection
Diezel Co. installs the most reliable and best sounding tubes that are currently
available in sufficient quantities. So it is possible that tube brand and tube type will
change during production. You can fine-tune your Schmidt by having different type
and brands of tubes installed, and because Schmidt is working in Class A operation
mode, there is no need to rebias the amp. Just let the tubes cool down and feel free
to try what you prefer: 5881, 6L6, 6V6 (we’re suggesting to use JJ 6V6S tubes) and
so on.
5.2.3 Life Span
Power tubes last 1 to 3 years, depending on care, volume and frequency of use
ofthe amplifier. If you use your amp only once a month, then the tubes will last
much longer. Really. We have heard tubes that are over 10 years old, but it was
not a good thing. Tubes age very slowly; slow enough for the artist to get used
tothe changing tone.