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Mad Professor Ruby Red Booster pedal
Controls
MASTER: this is a volume control that is located directly after the booster circuit and when set to max it is just a resistor to ground. This control sets the final output and it can be used to control the output when the pedal is used for overdrive (Boost turned up).
TREBLE: set treble boost from zero to about 15dB. The treble frequency and bandwidth are carefully tuned with an optimized bass slope.
BOOST: the gain of the booster and can be set from unity to about 40dB of boost. When this control is cranked the unit will distort within itself.
BUFFER: inside the pedal there is a switch for a high quality buffer. You can set the pedal for true bypass mode or “buffer on” in bypass mode. We recommend using a buffer in your signal chain to help with the treble and gain loss from using many pedals and/or long cables. Pedals are shipped “buffer on”.The Mad Professor RRB Buffer is an amplifier with a voltage gain of exactly 1x (times). The RRB buffer output impedance is set a little lower than the Dc resistance of a standard guitar pickup to equalize the effect of following load impedance. Input impedance is set at 500K for a medium load to standard guitar pickups. This keeps the tone and guitar volume taper natural.
Settings
TREBLE BOOST: Set Boost to minimum and Master to maximum and adjust for desired treble boost with the Treble knob.
STRAIGHT BOOST:Set Treble to minimum and Master to maximum and adjust Boost to desired effect.
BOOST: the gain of the booster and can be set from unity to about 40dB of boost. When this control is cranked the unit will distort within itself.
DISTORTION: Set Boost to maximum and adjust output level with Master to unity, then adjust Boost for desired depth and overdrive. Treble can be used to enhance distortion effect.
CAUTION !
Never operate the unit with its bottom removed or damage will most likely occur.
Electrical specifications
Input impedance: approximately 500K Ohm’s
Recommended output load: 50K Ohm’s or higher, effects output and buffer output
Current consumption @ 9V DC: approximately 6mA
DC supply voltage range: 8-18V
Voltage gain: approximately +40dB
Treble boost: peak +15dB@4KHz
Signal to noise ratio: 110 dB
Effect 3dB bandwidth: 70Hz to 7KHz
True bypass or buffered (switchable inside the pedal)
POWER REQUIREMENTS: 6F22 9V battery or DC eliminator 2.1 mm plug center negative and positive sleeve.
NOTES: RRB is protected against wrong DC eliminator polarity. Fuzzy sound is a sign of low voltage. Maintain recommended voltage for best results.