Unison Research Unico Primo User Manual

16
PHONO BOARD
Inside the Unico Primo there is a dedicated phono board. This
consists of two active gain stages for each channel and a RIAA
equalisation stage which is active for the low frequencies and
passive for the high frequencies. This solution is the result of
extensive listening tests, and provides an excellent combination of
deep, well-controlled bass and clear, sweet treble.
This phono board is able to interface with both MM and MC
cartridges.
Movable links on the board (two for right channel and two for left
channel) enable this adjustment to be carried out. The relative
positions are clearly marked MM and MC.
Two further movable links fitted to the phono board allow the level
of gain (amplification) to be changed by +/-10dB. In practice, MM
cartridges having an output lower than 4mV and MC cartridges
having an output lower that 0.5mV will probably require these links
to be set at the +10dB position.
5. FUSES
Inside the Unico Primo there are six fuses.:
F
1
, F
2
= 1AT / 250V
F
3
, F
4
= 1,6AT / 250V
F
5
, F
6
= 6,3AT / 250V
The value for the main fuses is:
6,3AT / 250V for 100V/120V mains voltage
3,15AT / 250V for 220V/230V/240V mains voltage
These fuses are all 5 x 20mm glass fuses. If one of these fuses
should blow we advise you to consult your Authorised Dealer or
Service Centre for advice.

Unison Research Unico Primo Specifications

Power Output

power output	80W RMS on 8Ω both channels driven
power consumption	380W max

Frequency and Impedance

frequency response	-0.1dB @ 10Hz / -0.5dB @ 100kHz
input impedance	47kΩ
feedback factor	10dB

Phono Stage

phono input impedance MM	47kΩ // 220pF
phono input impedance MC	100Ω // 440pF
phono gain MM	40dB
phono gain MC	50dB
phono gain setting	+0dB / +10dB
phono max input voltage	120mV @ 1kHz
phono THD	0.09% @ 5mV, 1kHz, MM

Dimensions and Weight

dimensions	17.1in x 3.5in x 17in
weight	31lb