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Chapter Five: Power Amplifier
5.1 Tone and Volume of the Power Amplifier
5.1.1 Master Volume
As the name suggests, this controls the overall, volume of the amplifier. There
is also a second, selectable master volume control, which allows volume
adjustments via remote control device while playing.
5.1.2 Presence
The presence knob controls frequencies over 3kHz. Treble is produced
anddispersed in a very small beam from the speaker, so be sure to position
yourself inthe projection area of the speaker when making adjustments.
5.1.3 Deep
The Deep Control is an active bass control contrary to conventional bass
controls.It controls the frequencies around 120Hz without influencing the
overall dynamicrange of the power amplifier. Diezel Co. is not responsible for
disintegratingspeaker cabinets.
5.2 Power Amplifier Tubes
5.2.1 Function
As the name suggests, the power amp section is the part of the amplifier
thatproduces 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 inoutput power and tone. We chose the tube type power
amplifier for its tried andtrue 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 typewill change during production. You
can fine-tune your Einstein by having different type and
brands of tubes installed, however, it is imperative that
the amp is biased properly. Einstein utilizes 4 power
tubes, organized in 2 pairs with dual bias possibility. This
allows use of 2 different pairs of power tubes, either the
same or the different types.
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