Unison Research Unico 90 Instruction Manual

12
3. 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
match the value indicated on the rear panel!
The mains fuse is located in the fuse-holder integrated in the IEC mains
socket and inside the amplifier.
IMPORTANT! Always replace fuses with new ones of the same type
and value.
4. OPERATION
SWITCHING-ON AND WARM-UP
WARNING! Switch on the Unico 90 only after all the connections
have been made and checked.
Before switching on, ensure that the volume control is at zero (fully
anti-clockwise), and allow it to remain in that position until the
initial automatic start-up phase is complete.
Just after switching on Unico 90 automatically starts a warm-up
phase, the LEDs placed on the front panel between the input
selection and volume knobs blink. In this status output stages are
disabled.
The working temperature for the tubes is reached less than 40
seconds after switching on but best results will be obtained after
approximately 10 minutes from switch-on.

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