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Theta Digital Dreadnaught Owner's Manual

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THETA DIGITAL
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D r e a d n a u g h t
Owner's Manual
Rev 102c

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Summary of Contents for Theta Digital Dreadnaught

  • Page 1 THETA DIGITAL D r e a d n a u g h t Owner’s Manual Rev 102c...

  • Page 3: Preface

    In the unlikely event that you have to return your Dreadnaught to the factory for service, or if you send it to us for updating, the original packaging will best protect the unit from shipping damage.
  • Page 4 The lightning flash with arrowhead symbol, within an equilateral triangle, is intended to alert the user to the presence of uninsulated “dangerous voltage” within the product’s enclosure that may be of significant magnitude to constitute a risk of electric shock to persons. The exclamation point within an equilateral triangle is intended to alert the user to the presence of important operating and maintenance (servicing) instructions in the literature accompanying the product.

  • Page 5: Dreadnaught Identification Record

    Dreadnaught Identification Record This information is for your records and for future identification of the Dreadnaught. Please take a moment to fill out all pertinent data now, and as upgrades and/or options are installed. Whenever upgrades, inquiries and/or changes are requested, the serial number will be required.

  • Page 6: Safety Precautions

    (which will also not be covered under warranty), please verify that the screws being used to secure non-Theta feet do not screw any deeper into the chassis than the original ones. The original screw is 1/4-20 by 1/2 and goes into the chassis 1/4 inch.

  • Page 7: Table Of Contents

    Table of Contents PREFACE ................................ii WARNING..............................iii Dreadnaught Identification Record ........................ iv SAFETY PRECAUTIONS ..........................v INTRODUCTION .............................. vii Getting to know your Dreadnaught .........................1 Burn-In Time ..............................1 Reference Manual Conventions........................1 IMPORTANT NOTICE ............................2 Dreadnaught Block Diagram ...........................3 Front Panel Layout............................5 Rear Panel Layout ............................6...
  • Page 8 This page was intentionally left blank...

  • Page 9: Introduction

    INTRODUCTION Getting to know your Dreadnaught This Dreadnaught has been put through a rigorous and unique testing procedure that ensures that it will last for many years with minimal service requirements. This procedure includes the following: • All assembled circuit boards are given a thorough visual inspection and are then tested in a bench- reference Dreadnaught.

  • Page 10: Important Notice

    IMPORTANT NOTICE It is imperative that the Dreadnaught be connected to a ground via its three wire AC power cord. It is important that the AC power outlet, which the Dreadnaught is plugged into, is actually grounded. Failure to do so will severely compromise the performance, reliability and safety of use of the Dreadnaught.

  • Page 11: Dreadnaught Block Diagram

    Dreadnaught Block Diagram Figure 1 - Block Diagram (Dreadnaught showing one channel module)
  • Page 12 Dreadnaught Block Diagram con’t. Figure 2 - Block Diagram (Dreadnaught showing two channel module)

  • Page 13: Front Panel Layout

    Front Panel Layout Figure 3 - Front Panel Layout STANDBY button. After the rear panel MAIN POWER switch is turned on press the front panel STANDBY button to exit the standby mode. All channels on the stereo bus will come out of standby. If the surround bus is active, with specific channels assigned to it, they will exit the standby mode as well.

  • Page 14: Rear Panel Layout

    10. SURROUND REMOTE TRIGGER jack. When the rear panel SURROUND TRIGGER jack receives a 5-12 VDC pulse the Dreadnaught’s surround mode will change from its current status, either on or off. 11. DB9 RS232 connector. Used for connecting an external controller to the Dreadnaught to control and monitor its functions.
  • Page 15 16. BALANCED input jack on single channel module. 17. POSITIVE BINDING POST – Channel B. (Two channel module). Connects to the + (plus) speaker connector. The binding posts on the two channel module can accept spade lugs, banana plugs or bare wire. 18.

  • Page 16: Operation

    Use a 1/8” (3.5mm) mono plug for these jacks. RS232 RS232 is an option in the Dreadnaught. It can be installed at any time either at the factory or an authorized Theta dealer. All functions of the Dreadnaught can be controlled and monitored via RS232, using either the RJ45 or DB9 connector.

  • Page 17: Appendix A Troubleshooting Guide

    Appendix A Troubleshooting Guide If the Dreadnaught should function abnormally during operation, please review the items in the following checklist. Please be sure to thoroughly check all other connected components such as speakers, preamplifiers, as well as cables. Symptom Possible Cause(s)

  • Page 18: Appendix B Wiring Diagram

    Consult your speaker manufacturer to ensure that any speaker in your system that will be connected to the Dreadnaught does NOT have internal circuitry with a common ground. Damage will occur if the negative terminal is connected to ground, or to a...

  • Page 19: Appendix Crs232 Protocol

    Examples: 1) To select put the Dreadnaught into standby: Send FE, EE, 01, 00, 00, 00 (all values in Hex). Where FE and EE are the header, 01 = command, 00 = main standby, 00 = put unit in standby and 00 = filler...
  • Page 20 Command Description Argument 1 Argument 1 Description Argument 2 Argument 2 Desc Argument 3 Arg 3 Desc Standby Main standby Put unit in standby Main standby Take unit out of standby. Surround bus Make surround bus inactive. Surround bus Activate surround bus. Status Return amplifier status.
  • Page 21 RJ45 Jumped 1 - DCD 1 - DCD 1 - RTS Jumped 2 - Dreadnaught sends on this pin 2 - DTR Dreadnaught receives on this pin 3 - Dreadnaught receives on this pin 4 - DTR 4 - GND...

  • Page 22: Rs232 Jumper Settings

    Figure 7 – Dreadnaught RS232 Jumper Settings RS232 Jumper Settings There are 2 possible Baud rates: 9600 and 19200. The factory default is 19200. To change the baud rate to 9600, move the jumper to the center and top pins (if the RS232 board is orientated as in figure 7).

  • Page 23: Appendix D Specifications

    Appendix D Specifications Inputs: Analog audio: 1 Single-ended per channel (RCA) on each module type. 1 Balanced per channel (XLR) on each module type. Input Impedance: 50 KΩ Single-ended or Balanced, for each phase. (both modules) Input sensitivity: Mono module: (Single-ended) 2.0V RMS input for 200W into 8 ohms.
  • Page 24 If the purchaser registers the unit with Theta by mailing in the warranty card, together with a copy of the bill of sale, within 14 days of the date of purchase, said purchaser will be registered for an extended service contract.

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