User manual MILLENNIA HV-3D

[. . . ] 1 READ THIS FIRST! Any changes or modifications not expressly approved by MILLENNIA MEDIA, INC. could void your authority to operate this equipment under the EC or FCC rules. Copyright: You acknowledge that no title to the intellectual property in the HV-3D is transferred to you. Inspection: Inspect packing box(es), HV-3D, and cable(s) for damage, unusual marks, or shortages. [. . . ] Millennia Media has long enjoyed a reputation for what many engineers call the world's most musically accurate and dynamically stable microphone preamplifier. With B&K (DPA) high voltage mic input option, a fully balanced audio path, enormous non-padded input and output headroom, superior technical specifications, world-class internal componentry, optional A/D conversion, and unparalleled sonic performance, the HV-3 series of microphone preamps is already becoming a true classic in the professional audio industry -- and will remain contemporary well into the next century. Hence, Millennia Media. HV-3D 4 HV-3D REAR PANEL (1) CONVENTIONAL MIC INPUTS "48V IN (1 - 8)" Conventional 3-pin female XLR input jacks for use with all conventional balanced microphones, both phantom and non-phantom powered. Standard input impedance is approximately 6, 200 ohms. Connector contacts are Neutrik Galvatronic gold plated. It is suggested that XLR cable connectors used with the HV-3D employ identical plating. (2) HIGH VOLTAGE MIC INPUTS "130V IN (1 - 8)" Four pin female XLR connector for use only with B&K (DPA) models 4003, 4004, 4009, and 4012 microphones. On HV-3D units without this option, a metal plate will cover the unused XLR holes. Pin 3 is +130 Volts DC power, and pin 4 is unbalanced audio signal. Connecting anything other than the above listed B&K (DPA) models to this connector may result in serious damage to microphone, the HV-3D unit, or both. Connector contacts are Neutrik Galvatronic gold plated. It is suggested that XLR cable connectors used with the HV-3D employ identical plating. (3) LINE LEVEL OUTPUTS "OUT (1 - 8)" Conventional three pin male XLR connectors providing balanced, line level microphone output. The line level output is capable of driving 600 ohm loads and long, high capacitance cables. Outputs may be configured in an unbalanced configuration by either grounding one of the audio polarities (pin 2 or pin 3), or taking one audio polarity directly as an unbalanced signal. In the former configuration, the output is automatically increased by 6 dB. Connector contacts are Neutrik Galvatronic gold plated. It is suggested that XLR cable connectors used with the HV-3D employ identical plating. (4) EARTH/AUDIO GROUND JUMPER A barrier terminal which ties earth ground to audio ground. If ground "hum" loops are experienced when using the HV-3D, removing this jumper may help. Using this jumper to lift ground, the integrity of the chassis/ earth ground connection is never compromised. Do not defeat the earth grounding pin on the AC plug. (5) AC VOLTAGE MAINS SELECTION "100-120" or "200-240" A power entry module with a removable fuse holder block. This fuse holder block is selectable for 100 to 120 Volt or 200 to 240 Volt worldwide mains powering. The fuse block contains two fuses -- one fuse is in series with the hot power line while the other fuse is in series with the neutral power line. To change the mains voltage selection, remove IEC power connector and assure that the HV-3D is not connected to mains power. [. . . ] And this is saying a lot considering that DPA's transformer-coupled microphones sound extremely pure. The following is a brief summary of certain DPA high-voltage microphone products and specifications. Most of this material is taken directly from DPA's documentation is is thought to be accurate, however, Millennia Media assumes no responsibility for errors or subsequent changes in the following specifications. Those desiring up-to-date information concerning DPA microphones should contact DPA directly. [. . . ]