BugBrand BugCrusher08 User manual

BugBrand
BugCrusher08

This version of the BugCrusher is a powerful desktop Sample Rate Reducer followed by a
Resonant Filter. The heart of a BugCrusher is based on a Sample & old circuit running at
audio rates (its not a bit-crusher!). Due to the number of features, please refer to the
block diagram on the last page and read through this manual before use. Be wary when
switching switches – in particular with the Input / Output levels – because these can cause
large changes in the volume!
Input Preamp:
The BugCrusher is designed for use both with high level Line signals or low level mic /
guitar signals. Use the Gain switch to select the input gain range (Lo for line level, i for
guitars etc) and then adjust the input level control to suit – keeping the level low will avoid
distortion, but driving it can add some extra sonic gnarl.
The input socket is an unbalanced mono ¼” jack – the ring connection is grounded so
that the pedal can work ok with a dynamic mic connected with a balanced cable.
Voltage Controlled Crusher:
The voltage controlled Crusher is the heart of the BugCrusher. Adjust the master crushing
rate with the CrushRate dial and then apply variable depth of modulation from an external
CV / Foot source (see below) with the CrushMod dial.
Pre-Filter Mix:
As the Crushing effect can be quite intense, it is nice to be able to mix in the dry input
signal. You can also turn down the crushed sound so that only the dry signal passes to the
Filter. The Phase switch inverts the crushed signal so that when you mix in the dry input
you get some cancellation of the signals – setting the phase to inverted (-ve) and mixing
in the dry signal will give a kind of high pass filter effect (try it out!). Note that you won't
hear any audible difference unless you're mixing together the dry AND crushed signals.
Voltage Controlled Filter:
This is a 12dB State Variable Filter design offering LoPass or BandPass responses and
variable resonance. The main filter cutoff is set by the Cutoff dial and then variable
modulation can be applied with the FilterMod dial.
Output Control:
The output has switched attenuation so that it can be used feeding a guitar amp without
overloading. For devices such as amps that expect a low level, switch the output to Lo and
switch it to i for line level (eg mixer) operation.
Foot / CV Modulation:
The voltage controlled elements of the Crusher and Filter circuits allow them to be
modulated with external signals – the Foot/CV switch selects between a CV signal
(standard +/- 5v range) from an analogue synth or an external expression pedal. Selecting
the Foot option connects a +5v bias to the socket's ring connection (stereo jack plug
connection). For CV option the ring connection is left open and will typically be used with a
mono input jack – avoid using a mono jack while the switch is set to Foot as this will
short the 5v bias source to ground (not good!).

Bypassing:
Electronic true-bypass is controlled by the big red bypass button – this is not designed for
foot operation! If you require stompable switching then use a standard momentary action
footswitch (normally open – short to ground operation) plugged into the ExtSwitch socket.
Po er:
Only use the BugCrusher with its supplied 12v AC adaptor – note that this is an AC
adaptor rather than the more usual DC. A DC supply will not work! If you lose or break the
supplied adaptor then get in contact for a replacement.
If you have questions, please get in touch: [email protected]