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Millennia HV-3D-4 Four Channel Microphone Preamplifier

Millennia Media HV-3D-4 Four Channel Microphone Preamplifier
 
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Product Code : HV-3D-4
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DESCRIPTION
 
HV-3D-4 Four Channel Microphone Preamplifier, Millennia Media

Four channels of HV-3 mic preamp in one 2U height rack chassis.

HV-3: Includes +48V phantom powering, optional +130 Volt B&K (DPA) mic powering, LED indicators, gain of 5 dB per step in 12 steps. Optional high-res (HR) gain switch available with 1.5 dB per step in 36 steps. DC Input Option available. Accepts 115V/230 VAC worldwide mains powering.

Fully shielded internal power supply. Identical spec and performance as HV-3 except high resolution (HR) gain switches are standard. Optional DPA (BK) +130 Volt mic inputs. Gloss black 3/8" faceplate. Accepts 100 - 240 VAC mains powering. Ground lift. DC Input Option available. Can be upgraded to HV-3D eight channel mic preamp

Product 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

Product 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.

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