Siegmund Big Boy 330 Owner's Manual

330 watt bass guitar tube amplifier

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Big Boy 330

Owner's Manual

330 Watt Bass Guitar Tube Amplifier

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Summary of Contents for Siegmund Big Boy 330

Page 1 Big Boy 330 Owner’s Manual 330 Watt Bass Guitar Tube Amplifier...
Page 2: Precautions
Before you plug into your new amplifier, be aware of the following precautions: Practice common sense. • Connect the amp only to a grounded AC power source, meeting the power supply • specifications, provided next to the AC power socket. Only use fuses with the rating indicated next to the fuse holder.
Page 3: Table Of Contents
Contents Contents Contents Contents Precautions Contents Overview Power-up Controls FX Loop Preamp Out - Power amp In Tubes Bias Control Tube Replacement Procedures Speakers Warranty...
Page 4: Overview
Big Boy 33 Big Boy 33 Big Boy 330 0 0 0 is a Bass tube amplifier with high quality custom wound transformers. Simplicity in design and function creates the purest and most musical bass tones made available yet. The Big Boy Big Boy has silky smooth big warm lively tube sound packing a powerful tight punch.
Page 5: Controls
Controls Controls Controls Controls High / Low Z High / Low Z High / Low Z High / Low Z switches between high or low impedance pickups. Passive pickups are High impedance and Active pickups are Low impedance. You can also use the switch in either position regardless of pickups – whatever gives the better signal and useful sweep range of the gain pot.
Page 6: Preamp Out - Power Amp In
FX FX FX FX Loop Loop Loop Loop The Big Boy Big Boy Big Boy Big Boy parallel effects loop has a buffered low-impedance Send Send Send output. Send It is capable of supplying both effects rack-mount and pedal inputs. The DI output DI output DI output...
Page 7: Fx Loop
Tubes Tubes Tubes Tubes 6x KT150 12AT7 12DW7 12DW7 EF86 Power Tubes Phase Inverter EQ Driver FX Loop Input Gain Always use matched sets of KT150 power tubes. 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.
Page 8: Bias Control
Bias Control Bias Control Bias Control Bias Control To achieve maximum performance while giving longest tube life, the Big Boy Big Boy Big Boy Big Boy features a complete easy- access Bias Control Bias Control Bias Control Bias Control section, with test-points for DVM hook-up. Here is a simple guide for adjusting bias: No technical knowledge is required.
Page 9: Tube Replacement Procedures
Use this guide to find the bias numbers for your desired configuration: Speaker imp Speaker impedance Speaker imp Speaker imp edance edance edance Bias Bias Bias Bias Power Power Power Power Peak Peak Peak Peak 2 ohm 2 ohm 2 ohm 2 ohm 200 mV 200 mV...
Page 10: Speakers
In this configuration, the 8 ohm cabinet gets twice the power from the amp than the 4 ohm cabinet. Lifetime Warranty Lifetime Warranty Lifetime Warranty Lifetime Warranty Chris Siegmund guarantees this Amplifier to be an excellent unit, functionally and musically. Chris Siegmund Chris Siegmund Chris Siegmund It is covered by a warranty to the original purchaser for life, against any defect traceable to faulty workmanship or defective components.