Unison Research Unico 90 Manual
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Unison Research Unico 90 Manual

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Unico 90

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Summary of Contents for Unison Research Unico 90

  • Page 1 Unico 90...
  • Page 2 - A.R.I.A. Advanced Research In Audio S.r.l. audio component. Every Unison Research product is the result of our extensive electronic design experience and of the deep knowledge of vacuum tubes and the way to obtain the best performances from them we have gained over the years.

  • Page 3: Installation

    90 , its original purpose-designed carton will provide the safest packing. INSTALLATION The Unico 90 should be positioned in a safe place on a plane surface. Adequate clearance must be left above and around the device to guarantee a correct ventilation.

  • Page 4: Connection To The Mains

    CONNECTION TO THE MAINS The Unico 90 is set at the factory to the appropriate mains voltage of the country it will be shipped to. IMPORTANT! The voltage setting may not be changed by the user. Never connect the Unico 90 to AC mains if the local voltage doesn’t...

  • Page 5: Front Panel

     Unison Research Unico 90 FRONT PANEL 1) SELECTOR KNOB 2) LED INPUT 3) VOLUME KNOB 4) LED VOLUME 5) IR RECEIVER 6) MAIN SWITCH (ON THE SIDE) REAR PANEL 1) MAINS PLUG 2) OUTPUT CONNECTORS 3) UNBALANCED LINE-LEVEL INPUT AND OUTPUT CONNECTORS...

  • Page 6: Remote Control

    Your remote control handset is fitted with a battery type CR2032 - 3V (lithium battery). The use of the remote control with Unico 90 IMPORTANT! allows only volume control by acting on buttons.
  • Page 7 This output provides buffered audio signal from the selected input Bypass input: This input allows to use Unico 90 as a power amplifier. The audio signal from this connector goes directly to the mainboard without passing input selector and volume control.
  • Page 8 FUSES Inside the Unico 90 there are twelve fuses.: = 1AT / 250V = 1,5AT / 250V saf1L saf2L = 1,5AT / 250V saf1R saf2R = 400 mAT / 250V ssrv1 ssrv2 = 10AT / 250V sal1L sal2L = 10AT / 250V...

  • Page 9: Safety And Maintenance

    Valve replacement should be carried out using only valves of the same type and matched in pairs. The Unico 90 uses two valve type ECC83 (12AX7) and four type ECC81 (12AT7). The amplifier has been designed for maximum valve life: in laboratory tests 1500 hours life have been exceeded.

  • Page 10: Technical Specifications

    TECHNICAL SPECIFICATIONS Output power: 100+100 W RMS su 8Ω 180+180 W RMS su 4Ω Frequency response: -1dB @ 12Hz e 45kHz, -3 dB @ 6Hz e 80 kHz Input impedance: 21kΩ //300pF Input sensitivity: 860mV RMS Input stage: Pure A class, double triode totem pole ECC83 and parallel totem pole ECC81 This single stage due to the particular circuitry is able to amplify the input signal...

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