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Heritage Audio 1084 80-Series Mic Preamplifier

Model: HA1084

Heritage Audio 1084 80-Series Mic Preamplifier
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About: Heritage Audio 1084 80-Series Mic Preamplifier

The Heritage Audio 1084 has been engineered to fill input module slots in the restoration process of vintage 80 Series sound mixing consoles.

It is also compatible with the Heritage Audio Frame 8 and Rack 2 powered enclosures.

Special care has been taken in sourcing the correct components that ensure performance will be as close to a 1070s unit as it is possible nowadays. Custom polystyrene and film tone capacitors have been developed to closely match the Siemens Styroflex and Mullard Mustard types of the late 60s and early 70s. Custom input transformers have also been co designed with Carnhill Transformers´ Oxford factory to our special requirements.

The Heritage Audio 1084 is entirely handmade in our facilities in Spain, employing the same old-fashioned wiring and soldering techniques of the 70s. All its circuitry is held into five plug in cards.

Specifications:

  • 80dB Class A Microphone preamplifier, HI-LO selectable minimum input impedance, balanced and floating.
  • High gain positions show a higher impedance, ideal for old ribbon mics.
  • 10dB Class A Line Amplifier, Bridging input impedance, balanced and floating.
  • Class A, single ended, 2N3055 driven high headroom output stage.
  • High Frequency: +/-16dB shelving at either 10, 12 or 16 kHz, Baxandall type.
  • Low Frequency: +/-16dB with selectable frequency shelving of 35Hz, 60Hz, 110Hz & 220Hz, Baxandall type.
  • Mid Frequency: Choice of 2 different 'Q' values with either +/-18dB or +/-16dB peaking, selectable center frequencies of 0.36kHz, 0.7kHz, 1.6kHz, 3.2kHz, 4.8kHz , and 7. 2kHz , dual inductor based.
  • High Pass Filter: 18dB per octave slope, switchable between 45Hz, 70Hz, 160 Hz & 360Hz, inductor based.
  • Low Pass Filter: 18dB per octave slope, switchable between 6, 8, 10, 14 and 18 Khz, inductor based.
  • EQ Button: Switches the equalizer on or off.
  • Phase Button: Flips phase 180.
  • 1084 Module available.
  • Microphone input impedance: HI, 1200 Ohm minimum, LO, 300 Ohm minimum. Higher gain positions gradually have greater impedances, optimum for low gain ribbon mics. Input is transformer balanced and floating.
  • Line input impedance: 10KOhms bridging, transformer balanced and floating.
  • Output impedance: Less than 75 Ohms, transformer balanced and floating, to drive a load of 600 Ohms.
  • Maximum output: Greater than +26dBm into 600 Ohms, greater than +32dBu into 10KOhms.
  • THD: Less than 0.025% at 1 Khz, Less than 0.05% at 100Hz.
  • Frequency response: 20Hz (+0.3dB) to 20Khz (-0.2dB).
  • Maximum Gain: Slightly greater than 80dB.
  • Noise: Less than -100dBm.
  • Power consumption: 106 mA @24VDC.

UPC: 799430206259

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Warranty: Heritage Audio 1084 80-Series Mic Preamplifier

AVShop.ca Warranty:

30 Days

Manufacturer's Warranty:

Three Years, parts and labour against manufacturer defects.