Theta Digital Dreadnaught II manual

THETA DIGITAL CORPORATION Dreadnaught II Owner’s Manual REV 1.02[...]

[...]

PREF ACE CONGRATULATIONS You have just acquired the most advan ced and versatile componen t for the amplification of audio ever to have been developed. IMPORTANT Save all packaging in a dry place away from fire haz ards. Your Dreadnau ght II is a precision electronic instrument and should be properly pa ckaged any time ship ment is made. In the unl[...]

The lightning flash with arrow head symbol, within an equilateral triangle, is intended to alert the us er to the presence of uninsulated “dangerous voltage” withi n the product’s enclosu re that may be of significant magnitude to constitute a risk of electric shock to persons. The exclamation point wit hin an equilateral triangl e is intende[...]

Dreadnaught II Identification Record This information is for your records and for future iden tification of the Dreadnaught II. Please take a mome nt to fill out all pertinent data no w, and as upgrade s and/or options are inst alled. When ever upgrades, inquiries and/or changes are requested, the s eri al number will be required. S E R I A L N U M[...]

SAFETY PRECAUTIONS Please carefully read each item of the operating instru ction s and safety precautions befo re installing and using this product. Use ex tra care to follow the warni ngs written on the produ ct it self and/or in the ope rating instructions. Keep the operating instru ct ions a nd safety precautions for future re ference. CAUTION: [...]

Table of Contents PREFACE ........................................................................................................................................................... ii WARNING ........................................................................................................................ ..............................iii Dr[...]

This page was intentionally left blank vii[...]

INTRODUCTION Getting to know your Dreadnaught II This Dreadnaught II has b een put through a rigo rous and un ique testing proced ure that ensures that it will last for many years with minimal service requi rements. This pro ce d ure includes the followi ng: • All assembled circuit boards are given a thorough visual in spection and are then teste[...]

IMPORTANT NOTICE I. It is imperative that the Dreadna ught II be connected to a ground via its three wi re AC power cord. It is important that the AC powe r outlet, which the Dr eadnaught II i s plugged into, is actually grou nded. Failure to do so will severely compro mise the performance, reliability and safety of use of the Dreadnaught II. II. V[...]

Dreadnaught II Block Diagram Figure 1 - Block Diagram (Dreadnaught II showing single channel module) 3[...]

Dreadnaught II Block Diagram con’t. Figure 2 - Block Diagram (Dreadnaught II showing two channel module) 4[...]

Front Panel Layout Figure 3a - Front Panel Layout 1. STANDBY button. After the rear panel MAIN POWER switch is turned on press the fro nt panel STANDBY button to exit the standby mode. All channel s on the stereo bus will come out of standby. If the surround bus i s active, with specific channels a ssigned to it, they will exit the standby mode as [...]

Front Panel Layout – Rackmount Option Figure 3b – Rackmount Front Panel Layout 1. STANDBY button. After the rear panel MAIN POWER switch is turned on press the fro nt panel STANDBY button to exit the standby mode. All channel s on the stereo bus will come out of standby. If the surround bus i s active, with specific channels a ssigned to it, th[...]

Rear Panel Layout Figure 4 – Rear Panel Layout showing both single and two channel modules installed 1. Channel THER MAL LED . Illuminates when the channel rises ab ove the maximum ope rating temperature. The Dreadnaught II should be powe red off an d cooled when this LED is lit. 2. Channel RAIL FUSE + LED . When this LED is illuminated, the fuse[...]

8 17. BALANCE D input jack – Channel B of two channel module. 18. SINGLE-ENDED input jack – Chann el B on two cha nnel module. 19. SURROUND REMOTE TRIGGER jack. When the re ar panel SURROUND TRIGGER jack receives a 5 -12 VDC pulse the Dreadnaught II’s surro und mode will change from its current status, either on or off. 20. DB9 RS232 connecto[...]

OPERA TION Before turning on the Dreadnaught II, en sure that all precautio ns and warnings have bee n carefully reviewed and adhered to. Da mage to the Dreadnaug ht II caused by impro per operation, wiring and/or ventilation will not be covered under warranty and Thet a will not be liable for any consequential damage or lo ss. When first turning o[...]

Appendix A Troubleshooting Guide If the Dreadnaught II should function abnormally during op er ation, please review the items in the following checklist. Please be su re to thoroughly check all other conne cted components such as spea kers, preamplifiers, as well as cables. Symptom Possible Cause(s) Remedy No power or front panel lights and no soun[...]

Appendix B Wiring Diagram This section provides an e xample illustration of an input and output wiring scheme. In this example, the Dreadnaug ht II has 3 single channel s and two 2 channel m odules installed. Before making any conne ctions, please turn off A LL audio and video devices. Unplug those that do not have a ma in power switch. It is recom[...]

Appendix C RS232 Protocol RS232 settings are intern ally definable via jumper blocks, to a ccommodate interfacing with a wide range of cont rol products. Baud rate 9600 or 19200 Echo status AUTO or REQUEST Baud rate: Maximum number of bits per second. The duration of a single bit is equal to 1 / baud rate. Echo status: Specifies whether the STATUS [...]

Command Description Argument 1 Argument 1 Description Argument 2 Argument 2 Desc Argument 3 Arg 3 Desc 01 Standby 0 Main standby 0 Put unit in standby 0 Main standby 1 Take unit out of standby. 1 Surround bus 0 Make surround bus in active. 1 Surround bus 1 Activate surround bus. 02 Status 0 Return amplifier status. The RS232 can be set using a hard[...]

RS232 Hardware Connections Figure 6 – Dreadnaught II RS232 Jack Pinout These are the connector drawings onl y. The RS232 cable must be a regular RS232 o r mouse extender cable, wire d pin for pin. 14[...]

Figure 7 – Dreadnaught II RS232 Jumper Settings RS232 Jumper Settings There are 2 possible Bau d rates: 9600 and 19 200 . The factory default i s 19200 . To change the baud rate to 9600 , move the jumper to the center and top pins (if the RS232 board is or ientated as in figure 7). The STATUS can be returned to the controlle r either: automatical[...]

16 Appendix D Specifications Inputs: Analog Audio : 1 Single-ended per channe l (RCA) on each module type. 1 Balanced per channel ( XLR) on each module type. Input Impedance: 50 K Ω Single-ended or Balanc ed, for each phase (both modules). Input sensitivity: Mono Modu le: (Single-e nded) 2.18V RMS input for 225W into 8 ohms. (Balanced) 1.09V RMS [...]

17[...]

90 DAY LIMITED WARRANTY TERMS AND C ON DITIONS (3 Year optional extended service contract) 1. Theta Digital Corporation, henceforth refer red to as Theta, warrants the product designated her ein to be free of manufacturing defects in material and workmanship, subject to the condit ions set forth herein, for a period of 90 days from the date of purc[...]