Item #: HEA HA8173 LIST

Heritage Audio 8173 80 Series Microphone Preamp And Equalizer Module

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Product Description

A new desing by Heritage Audio, the 8173 module 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.

The 8173 could be easily described as a 1073 with the mid bands of a 1081. We´ve decided to keep the 1073 Baxandall shelving lo and hi eq bands as they sound amazing, but have implemented a choice of 3 hi shelving frequencies, a la 1084.

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 8173 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.

CALIFORNIA PROPOSITION 65 WARNING
warning WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov.

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Product Specifications

Product Specifications
Heritage Audio 8173 Microphone Preamp And Equalizer Module Specifications
  • Microphone input impedance: HI, 1200 Ohm minimum, LO, 300 Ohm minimum. Higher gain positions gradually have greater impedances, optimum for lo 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 +26dBu into 600 Ohms, THD: Less than 0.025% at 1Khz, Less than 0.05% at 100Hz.
  • Frequency response: 20Hz (+0.3dB) to 20Khz (-0.2dB).
  • Maximum Gain: Slightly greater than 80dB.
  • Noise: Less than -100dBu.
  • Power consumption: Less than 110 mA @24VDC.

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