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dbx 120A User Manual
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dbx 120A User Manual

dbx 120A User Manual

Subharmonic
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120A
Subharmonic
Synthesizer
with
Modeled Waveform Synthesis
™
User Manual

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Summary of Contents for dbx 120A

  • Page 1 120A Subharmonic Synthesizer with Modeled Waveform Synthesis ™ User Manual...

  • Page 2: Important Safety Information

    IMPORTANT SAFETY INFORMATION WARNING FOR YOUR PROTECTION READ THE FOLLOWING: KEEP THESE INSTRUCTIONS HEED ALL WARNINGS FOLLOW ALL INSTRUCTIONS THE APPARATUS SHALL NOT BE EXPOSED TO DRIPPING OR SPLASHING LIQUID AND NO OBJECT FILLED WITHI LIQUID, SUCH AS VASES, SHALL The symbols shown above are internationally accepted symbols that warn of BE PLACED ON THE APPARATUS.
  • Page 3 Sandy, Utah 84070, USA Date: November 1, 2010 European Contact: Your local dbx Sales and Service Office or If you want to dispose this product, do not mix it with general household waste. There is a separate collection system for used electronic products in accordance with legislation that Harman Music Group requires proper treatment, recovery and recycling.

  • Page 4: Table Of Contents

    120A Table of Contents Introduction 0.1 Defining the 120A ..........i 0.2 Service Contact Info .........ii 0.3 Warranty ............ii Section 1 - Operation and Appendix 1.1 Rear Panel Connections ........1 1.2 Front Panel Connections .........1 1.3 Operating Notes ..........2 1.4 Basic Connection ..........4 Appendix A.1 Block Diagram ..........5...
  • Page 5 120A INTRODUCTION INTRO CUSTOMER SERVICE INFO 120A DEFINED WARRANTY INFO 120A User Manual...
  • Page 6 ONLY, along with a separate subwoofer output with its own level control. This manual will be your guide to understanding the full functionality of the powerful 120A. After you have become familiar with the unit, we encourage you to experiment and find cre- ative ways that the 120A can help you optimize your specific application.

  • Page 7: Introduction

    In no event shall dbx or its dealers be liable for special or consequential damages or from any delay in the performance of this warranty due to causes beyond their control.
  • Page 8 120A 120A User Manual...

  • Page 9: Rear Panel Connections

    1.1 Rear Panel Connections A- IEC Power Cord Receptacle This is the power cord receptacle of the 120A. An IEC cord is included with the shipped product. B- Subwoofer Output Connector This output connector sends signal to your subwoofer amplifier, the low bass signal which ranges from 20 Hz up to the crossover frequency (80Hz to 120Hz).

  • Page 10: Operating Notes

    K- LF Boost Control This control is used to even out the total apparent Bass output of the 120A. Use the LF Boost to gently boost the bass on each channel (after the harmonics are summed in) to fill in the gap between the synthesized low bass (below 55 Hz) and the mid-bass of the original pro- gram.
  • Page 11 120A is more portable than a pair of two larger speakers. Turntable Feedback and Low Frequency Rumble If you are using the 120A with a turntable, the increased levels of bass may make your turn- table system more susceptible to feedback, wherein the turntable base, platter, cartridge/stylus, and/or the disc itself actually pickup and replay bass from the speakers.

  • Page 12: Basic Connection

    120A for guitar or bass; main outs of a submixer as the signal is sent to main mixer. The 120A can be used either before or after an external electronic crossover. When using a chain of processors, the 120A should generally be placed as far down the chain as possible.

  • Page 13: Appendix

    120A Appendix Block Diagram Appendix A.1 Block diagram 120A User Manual...

  • Page 14: Specifications

    12dB/octave high pass (-3dB @ 80 Hz or 120Hz); 6dB/octave derived low pass. Crossover: Phase-coherent (unity-sum) 100-120VAC; 50/60Hz DO Version, 220-240VAC; 50/60Hz EU Version Power Requirements: 1.75"x19"x6.2" (4.5cm x 48.3cm x 15.75cm) Dimensions: 1 Rack Unit Rack Space: 4.75 lbs/8 lbs, 2.2kg/3.7kg Weight: Net/Shipping: 120A User Manual...

  • Page 15: Wiring Diagrams

    The output’s impedance at 100Ω, allowing operation with virtually any load. Nominal operating level is +4dBu into 600Ω. If using 1/4” mono plugs, at the output, the 120A will be grounded to the load device. This can cause a ground loop. By using 1/4” balanced phone plugs, the grounds of both the 120A and the load can be isolat- ed to reduce hum.
  • Page 16 8760 South Sandy Pkwy. Sandy, Utah 84070 Phone: (801) 568-7660 Fax: (801) 568-7662 Questions or comments? Email us at: support@dbxpro.com or visit our Website at: www.dbxpro.com 18-2217-C Printed in USA...