Unison Research Unico 90 User Manual

Unison Research

Unico 90
7
5. SAFETY AND MAINTENANCE
Never operate the device with either the bottom or top covers
removed.
Do not open the amplifier !
There are no user serviceable parts inside. For technical assistance
or product service please refer to your Authorised Dealer or to a
Unison Research

authorised Service Centre.
Do not spill liquid into the amplifier !
If liquid should be accidentally spilled into the amplifier remove the
mains plug from the wall socket immediately and seek assistance
from an authorised Service Centre before attempting to operate it
again.
Before inserting the mains plug into the wall socket ensure that
the switch on the amplifier is in the “OFF” position.
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.
.
IMPORTANT!
Before attempting valve replacement make sure that the
amplifier is switched off and remove the mains power cord from
the amplifier. If in doubt your Authorised Dealer or Service
Centre will be able to assist with this operation.
Cleaning the Unico 90.
Cleaning has to be done after switching off the device and allowing
the amplifier to cool down. Use a soft dry cloth. Do not use solvents
or alcohol-based detergents. Do not rub hard on the screen-printed
legends.
Never operate the amplifier when covered!
Adequate ventilation is essential at all times!

Unison Research Unico 90 Specifications

Output Power

output power at 8Ω	100+100 W RMS
output power at 4Ω	180+180 W RMS

Frequency Response

frequency response at -1dB	12Hz to 45kHz
frequency response at -3dB	6Hz to 80kHz

Input Specifications

input impedance	21kΩ //300pF
input sensitivity	860mV RMS
input	6 line (3 unbalanced, 2 balanced, 1 'bypass' unbalanced)

Output Specifications

line outputs	1 tape, 1 sub (volume controlled)
output connectors	4 + 4 bi-wiring
output resistance	<0.4 ohm, resistive on all audio frequencies

Power and Consumption

power consumption	550 W (at max power on 8 ohm)
global feedback factor	0 dB
THD at 1kHz, 1 W	< 0.15%

Weight and Dimensions

dimensions	43.5cm x 18 cm x 44 cm
net weight	20 kg