Millennia TD-1 Instruction Manual
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Millennia TD-1 Instruction Manual

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TD-1
Twin Direct
Recording Channel
Instruction Manual
Rev A3, 6/03 (2500)
© 2003, Millennia Media, Inc.
All rights reserved. Litho in U.S.A.
Twin Direct

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Summary of Contents for Millennia TD-1

  • Page 1 TD-1 Twin Direct Recording Channel Instruction Manual Rev A3, 6/03 (2500) © 2003, Millennia Media, Inc. All rights reserved. Litho in U.S.A. Twin Direct...
  • Page 2 ONE YEAR WARRANTY Millennia Media will repair this product, free of charge, in the USA, in the event of defect of materials or workmanship for one (1) year following date of purchase. This warranty is extended only to the original pur- chaser.

  • Page 3: Table Of Contents

    TABLE OF CONTENTS GOVERNMENTAL NOTICES INSPECTION SAFETY PRECAUTIONS DESIGN CRITERIA QUICK START FRONT PANEL FUNCTIONS Input Section Equalizer Section Routing Section REAR PANEL FUNCTIONS SIGNAL FLOW DIAGRAM GROUND LIFTING & ISOLATION JUMPER MAPS ASSEMBLY INSTRUCTIONS (Rack Mount, etc..) PERFORMANCE GRAPHS SPECIFICATIONS CONTACT INFORMATION Back Cover...

  • Page 4: Governmental Notices

    Part 15 of the FCC Rules could void the user’s authority to operate the equipment. This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) This device may TD-1...
  • Page 5 not cause harmful interference, and (2) This device must accept any interference received, including interference that may cause undesired operation. This Product Certified to meet the Standards in the categories: Audio/Video and Musi- cal Instrument Apparatus for Household, Commercial, and Similar General Use EMI: FCC Part 15 Class B;...
  • Page 6 BZT Declaration (German) Bescheinigung de Millennia Media, Inc. hiermit wird bescheinigt, dass die Direct Box TD-1 “TWIN DIRECT” in Übereinstimmung mit den Bestimmungen der VFG 523/1969, DIN 57871 / VDE 0871 / 09.84, und DIN 75875 Part 1 A2 / 10.90 (Amtsblattvertugung) funk-entstört ist.

  • Page 7: Inspection

    10 days after ship date. 3. Read this manual carefully and completely before attempting to use the TD-1. Improper operation could result in damage to product. It is the user’s responsibility to understand the safe use and operation of this device.
  • Page 8 TD-1, TWIN DIRECT, Speaker Soak, and Twin Topology are trade- marks of Millennia Media, Inc. All other trademarks are property of their respective holders. TD-1 serial number is located on the rear left side of each unit. We suggest that you record the serial number in the space provided below.

  • Page 9: Safety Precautions

    1. WATER, MOISTURE, AND SPILLAGE Do not attempt to use the TD-1 in, near, or around water or in unusually moist environments, such as near a sink or swimming pool. Prevent liq- uids or any other materials or objects from spilling or falling into the TD-1 unit.
  • Page 10 13.5" deep and is designed for mounting (in pairs) into a standard 2U, 19" equipment rack. If the TD-1 is mounted in a road case or other rack which is prone to strong vibration or shock, it is highly recommended that the rear of the TD-1 be supported or otherwise reinforced to withstand such conditions.

  • Page 11: Design Criteria

    + direct box. We believe TD-1 is the world’s most versatile and absolutely best sounding DI (direct injection) box — and much more. TD-1 offers numerous signal path topologies (vacuum tube, discrete transistors, monolithics, three different audio transformers, speaker soak, REAMPs, etc.) all sonically...

  • Page 12: Quick Start

    See the signal flow diagram later in this manual for TWIN DIRECT’s extensive versatility. Mic input (option) is routed directly to an authentic HV-3 microphone preamplifier with up to 65 dB of gain. Line input is routed to a discrete-hybrid balanced receiver with +45 dB of gain. TD-1...

  • Page 13: Front Panel Functions

    Instrument (DI) input is routed via TT switch to vacuum tube buffer ampli- fier or discrete solid state (FET) buffer amplifier, with triple input imped- ance selection switching on both topologies. Any input may be attenu- ated via a -20 dB pad switch. The DI input also offers a selectable guitar amplifier Speaker Soak input and selectable buffered or unbuffered “direct DI through”...
  • Page 14 TD-1...
  • Page 15 Standard 3-pin XLR input (Pin 2 hot) which will accept any balanced or unbalanced line-level signal. A 20 dB pad (attenuator) is included for ultra-hot signals, but because of the TD-1’s extremely high native line input headroom (+23 dBu) this pad should rarely be required (see “Pad”...
  • Page 16 Use care, as well, not to insert or extract mic cables from the TD-1 when phantom power is active. This could damage both microphone and the sensitive HV-3 front end.

  • Page 17: Equalizer Section

    Wonderfully rich and spacious electric guitar recordings can be achieved by using a pair of microphones on a guitar speaker cabinet, along with a direct feed into TD-1’s Speaker Soak input — with all three signals mixed together. Try using a pair of sonically dissimilar micro- phones, such as a Royer 121 and Josephson 606 (two of our favorites).
  • Page 18 PARAMETRIC E.Q. IN/OUT SELECT Pushbutton Switch “EQ IN” A switch which places the single (yes, only one) active EQ amplifier in the signal path. Minimal signal path EQ topology assures consistently faithful musical performance. TD-1...

  • Page 19: Routing Section

    (Red). Note that TWIN DIRECT’s balanced line level output has a maximum output level of +32 dBu. As such, when the red overload LED turns on, the TD-1 balanced line output is not clipping, but has twice the reserve output voltage headroom remaining before clipping.

  • Page 20: Rear Panel Functions

    (front panel) input but is not designed as a mixing path. For optimal performance when line input is in use, disconnect microphone, and visa versa. To achieve a signal path that is identical to Millennia’s HV-3B, HV-3C, or HV-3D units, use the active balanced line ouput (Main Output #1, below).
  • Page 21 Twin Direct...
  • Page 22 (3) as a last resort if the Line Output (above) level is too hot, or if your destination cannot handle line-level program. Output XLR connector contacts are Neutrik gold plated. It is suggested that XLR cable connectors used with the TD-1 employ identical plating. TRANSFORMER OUTPUT GROUND LIFT Toggle Switch A toggle switch which, when in the up position, lifts internal ground from the Transformer-Coupled Output (above).
  • Page 23 REAMP outputs are driven from specially wound shielded magnetics designed to closely emulate the output characteristic of each guitar pickup. TD-1 outputs can also be special-ordered with dual Les Paul or Twin Direct...
  • Page 24 Hey, experiment and be daring — you might just find a sound with “hit” written all over it. Millennia is also indebted to Professor Steve Errede at the University of Illinois (Urbana) for his brilliant research into the electro-physics of guitar pickups.
  • Page 25 POWER ENTRY “IEC Power Receptacle” An IEC-type AC line-power receptacle for use with removable cords. Use only the power cord provided with the TD-1 unit or equivalent U/L ap- proved type SV, SVT, SJ, or SJT AC power supply cord. Never defeat the third pin earth ground on the power cord.
  • Page 26 TD-1...

  • Page 27: Signal Flow Diagram

    SIGNAL FLOW DIAGRAM Twin Direct...

  • Page 28: Ground Lifting & Isolation

    TWIN DIRECT’s IEC power connector. When IEC earth ground is secured, earth-to-chassis safety integrity is preserved under all circumstances, regardless of TWIN DIRECT’s internal ground lift or ground isolation selections. TD-1...

  • Page 29: Jumper Maps

    JUMPER MAPS INPUT PCB For more on jumper options inside the TWIN DIRECT, please refer to the Signal Flow Diagram and detail instruction pages. Remember, before you remove TWIN DIRECT’s top cover, always assure that the IEC AC power plug has been disconnected for at least five minutes. This will allow potentially lethal voltages inside the TWIN DIRECT to dissipate to a safe level.
  • Page 30 Signal Flow Diagram and detail instruction pages. Remember, before you remove TWIN DIRECT’s top cover, always assure that the IEC AC power plug has been disconnected for at least five minutes. This will allow potentially lethal voltages inside the TWIN DIRECT to dissipate to a safe level. TD-1...
  • Page 31 Twin Direct...
  • Page 32 TD-1...

  • Page 33: Performance Graphs

    PERFORMANCE GRAPHS Twin Direct...
  • Page 34 TD-1...
  • Page 35 Twin Direct...

  • Page 36: Specifications

    8.5" W x 13" D x 3.5" H Net Weight approximately 15 pounds * Maximum HV-3 preamplifier gain can be factory modified up to 85 dB upon customer request. Millennia Media reserves the right to change specification and delivery without notice. TD-1...

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