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Millennia - HV-3D - Four and Eight Channel Microphone Preamplifiers

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Millennia Music & Media Systems - HV-3D - Four and Eight Channel Microphone Preamplifiers
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The Millennia HV-3D (tm) is a four or eight channel, fully matched microphone preamplifier of uncompromising sonic character, technical specification, and mechanical workmanship. The HV-3D offers multiple channels of HV-3C preamplifiers at significantly less per-channel cost.

With circuitry identical to Millennia's acclaimed HV-3C series high voltage microphone preamplifier, the HV-3D offers high resolution gain switching (36 steps @ 1.5 dB per step), optional B&K (DPA) 130V mic input option on every channel, DC-coupled input option on every channel for optimizing ribbon and other dynamic mics, a passive summing option, and future options, including remote gain control (late 2005).

Unlike preamps using vacuum tubes, IC function modules, and audio transformers (all of which lend their own audio coloration), Millennia's HV-3 micamp architecture is precisely optimized towards capturing the subtlest detail of music and ambience. With +23 dBu native input headroom, the HV-3D requires no input pads or switch points as found on common "textbook" preamp designs - thus avoiding yet another source of sonic degradation. Moreover, with its +32 dBu output headroom, ultra-high dynamic stability and linearity is assured.

HV-3D signal path from input through output is entirely balanced with a minimum amplifier topology. Uncompromising circuit design with meticulous selection and matching of critical components assures consistently transparent audio performance at all dynamic excursions and frequency extensions. Moreover, standard audio cables over 1000 feet in length have been driven from HV-3 mic preamps with no immediately detectable signal degradation.

Highlights

  • High Speed Transformerless Design
  • 23 Db Input & 32 Db Output Headroom (No Pads Required)
  • Entirely Balanced Audio Path
  • Optional B&K (Dpa) +130 Volt Inputs On All Channels
  • Optional Dc-Coupled "Ribbon Inputs" On All Channels
  • Laser Trimmed Fet-Based Output
  • Thd+N Less Typically Than 5 Ppm (.0005%)
  • Matched Discrete Transistor Front-End
  • High-Resolution Gain Switches Standard (36 Steps)
  • Interchannel Gain Matched To .04 Db
  • Four Ch. Unit Factory Upgradable To Eight Ch.
  • Fully Shielded Internal Toroid Power Supply
  • Unsurpassed Ambience Retrieval
  • Effortless, Lifelike Musical Performance At All Dynamic Levels

Available Options

  • B&K (DPA) +130V mic inputs
  • DC Optimized Mic Inputs
  • Channel Summing

Specifications

MINIMUM GAIN

8.5 dB

MAXIMUM GAIN (1.5 dB per step, 36 steps)

60.5 dB (up to 78 dB on rqst)

FREQUENCY RESPONSE +0 / -3 dB

sub 4 Hz to beyond 300 kHz

FREQUENCY RESPONSE, STEREO DEVIATION

< .04 dB

NOISE @ 60 dB Gain, 10 Hz - 30 kHz, Inputs common

-133 dB EIN

NOISE @ 60 dB Gain, 10 Hz - 30 kHz, 50 Ohm Source

-130 dB EIN

NOISE @ 60 dB Gain, 10 Hz - 30 kHz, 150 Ohm Source

-128 dB EIN

TOTAL HARMONIC DISTORTION + NOISE, 35 dB Gain, 10 Hz - 20 kHz bandwidth, +27 dBu Out

< .001%, Typ. < .0005%
(< 5 PPM)

INTERMODULATION DISTORTION (50 Hz & 7 kHz) 35 dB Gain, +27 dBu Out

< .0009%

PHASE RESPONSE 35 dB Gain, 50 Hz - 20 kHz bandwdth, +27 dBu Out

< 2 degrees deviation

PHASE RESPONSE, STEREO DEVIATION 35 dB Gain, 20 Hz - 40 kHz bandwidth, +27 dBu Out

< 1/2 degree deviation

COMMON MODE REJECTION RATIO 35 dB Gain, 10 Hz - 20 kHz bandwidth, 100 mV C.M.

> 65 dB, Typ > 85 dB

SLEW RATE 35 dB Gain, +27 dBu Out

> 25 Volts per microsecond

MAXIMUM INPUT LEVEL 20 Hz - 40 kHz

+23 dBu*

MAXIMUM OUTPUT LEVEL 20 Hz - 40 kHz

+32 dBu

INTERCHANNEL CROSSTALK
35 dB Gain, 1 kHz, +27 dBu All Outputs

Better than -120 dB (> 20 Bits)

PHANTOM INPUT IMPEDANCE @ 20 Hz

6,700 Ohms

PHANTOM INPUT IMPEDANCE @ 20 kHz

6,800 Ohms

OUTPUT IMPEDANCE

24.3 ohms (x2)

B&K (DPA) MIC POWERING

+130 VDC, max, direct (non-phantom) powered

PHANTOM POWERING

+48 VDC, +/- 2 VDC

POWER CONSUMPTION, MAXIMUM

45 Watts, Maximum

POWER REQUIREMENTS

100 to 240 VAC, 50/60 Hz

DIMENSIONS

19" W x 12" D x 3.5" H

* Approximately equivalent to the output of a B&K 4012 microphone in a 145 dB SPL soundfield.
- Unless stated, all measurements are balanced into 100k ohm load on a calibrated Audio Precision System One.
Model+ Description List Price  R.A.L. Price  
HV-3D - 4 - Four Channel Microphone Preamplifiers $3,095.00 $2,785.99
10% OFF!
 Add to Cart  

HV-3D - 8 - Eight Channel Microphone Preamplifiers $4,195.00 $3,775.99
10% OFF!
 Add to Cart  

Monday 13 March, 2006
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Millennia
Millennia Music & Media Systems

Millennia Music & Media Systems

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