Siegmund Big Boy 330 Owner'S Manual Download | Manualshive

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Big Boy 330

Owner’s Manual

330 Watt Bass Guitar Tube Amplifier

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Summary of Contents for Big Boy 330

Page 1: ...Big Boy 330 Owner s Manual 330 Watt Bass Guitar Tube Amplifier ...

Page 2: ...se or tubes Give tubes time to cool down before replacement to avoid burned fingertips Never attempt to service the amplifier unless you are a qualified technician DC current and voltages can be lethal Do not expose the amp to moisture water direct sunlight or extreme temperatures Do not use solvents to clean the amps covering or chassis Use a damp not wet soft cloth When the amp is stored for an ...

Page 3: ...ontents Contents Contents Contents Precautions 2 Contents 3 Overview 4 Power up 4 Controls 5 FX Loop 6 Preamp Out Power amp In 6 Tubes 7 Bias Control 8 Tube Replacement Procedures 9 Speakers 10 Warranty 10 ...

Page 4: ...ting and monitoring of the output tubes for ideal performance and sound quality Power Power Power Power up up up up Important This power up procedure should always be followed to substantially extend the tubes life Plug your Bass into the Input Input Input Input jack on the front panel Bring the Standby Standby Standby Standby switch to the Standby position Turn the Power Power Power Power switch ...

Page 5: ...ean headroom setting any further rotation of the knob will slightly raise the volume and make the distortion more saturated and compressed The EQ section of the Big Boy Big Boy Big Boy Big Boy is designed to suppress or boost certain frequency ranges in an interactive manner EQ band ranges are 50 160 500 1600 and 5000 Hz with 6 dB octave roll off between peaks and flat below 50 and above 5000 Sub ...

Page 6: ...can be connected between Send Send Send Send and Return Return Return Return to create a parallel secondary preamp channel The Mix Mix Mix Mix control blends the preamp with the signal from the Return jack Return jack Return jack Return jack Always leave the knob turned all the way to Pre when no effect or other preamp is connected Preamp Out Preamp Out Preamp Out Preamp Out Power amp In Power amp...

Page 7: ...bes The Left side and the Right side of tubes are in parallel with each other on their side The amp understands each side as one combined unit and what matters is that both Left and Right side are equally strong and balanced with each other If a matched sextet of tubes is not available you can also use 3x matched pairs or 1x matched quartet 1 matched pair ...

Page 8: ...til the tubes are completely warmed up 3 Turn the Master volume all the way down 4 Switch the DVM to the DC millivolts setting 200mV on most units 5 Insert the Black probe of the DVM into the G test point 6 Insert the Red probe into L and adjust the Bias trim below it to the number shown in the table on the next page 7 Insert the Red probe into R and again adjust Bias trim below it to the same num...

Page 9: ...tube at a time and look for none or the least change in the meter reading and replace that tube Then reset using the Bias procedure above Readjust Bias Bias Bias Bias as tubes wear down over time to maintain balance between L L L L and R R R R Reset Bias Bias Bias Bias after replacing one or more power tubes Balance Balance Balance Balance can only be adjusted when the amp is played and Master is ...

Page 10: ...rranty Lifetime Warranty Lifetime Warranty Lifetime Warranty Chris Siegmund Chris Siegmund Chris Siegmund Chris Siegmund guarantees this Amplifier to be an excellent unit functionally and musically It is covered by a warranty to the original purchaser for life against any defect traceable to faulty workmanship or defective components Siegmund Guitars Amplifiers Siegmund Guitars Amplifiers Siegmund...

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