The 2-band EQ is an active Baxandall boost/cut design. The EQ is
only applied to the fuzz signal, so that your dry signal remains
natural.
The octave distortion is selected by a footswitch. The octave is a
full-wave rectifier distortion circuit located after the fuzz and its 2-
band EQ circuit. This circuit acts as a distortion intensifier of the
fuzz, which is ideal for busting out into a solo. As with the dry signal
blend, the octave signal also has two low-pass filters that are
selectable from the DIP switch on the back of the circuit board. The
filters have cut-off frequencies of 4000Hz and 500Hz. These filters
are useful to tame some of the high frequency artifacts that this
octave distortion method generates.
The Photon Fuzz uses two quality op-amp buffers and electronic
switching for its bypass circuit. The buffered bypass is designed to
be very low noise with no tonal coloration.
The dual rail power supply in the Photon Fuzz is built on its own
discrete circuit board to physically separate it from the audio circuits.
This power supply provides 18Volts (+9V and -9V) to the fuzz circuit
board to provide plenty of headroom for the signal. The power
supply generates this dual voltage from a 9VDC power adapter or
battery.
Frank E. Appleton (FEA)
DIP Switch Settings:
The DIP switches are located on the back of the circuit board.
They can be accessed by removing the bottom cover
.
DRY blend high frequency filter switch #1 and #2
Both OFF = Full band (no filter)
SW #1 ON = 1600 Hz
SW #2 ON = 160 Hz
OCTAVE high frequency filter switch #3 and #4
Both OFF = Full band (no filter)
SW #3 ON = 4000 Hz
SW #4 ON = 500 Hz
Pre-fuzz high pass filter switch #5 and #6
Both OFF = 220 Hz
SW #5 ON = 110 Hz
SW #6 ON = 55 Hz
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