Issue 2 (LP) : 10 March 2005
kW Phono Preamplifier
Instructions for use
Page
5
of
7
CONNECTIONS
Pickup loading adjustments and all input,
output and power connections should be made
with the mains power switched OFF.
INPUT CONNECTIONS
The rear panel of your kW Phono pre-
amplifier has two pairs of RCA phono input
sockets, one pair for left and right moving
magnet (MM) and the other pair for moving
coil (MC) pickup cartridges.
(See also page 6, MM / MC switching).
The switches and loading sockets located on
the rear panel are for optimising phono
performance as follows :
. . . .
MC
(only):
Input loading can be changed to suit an
individual pickup cartridge by sliding the
LOADING
switch underneath the
PHONO
MC
input socket between the 10 Ohm
internal and
EXTERNAL
loading options as
required.
In the
EXTERNAL
position, loading
impedance can be set by inserting the
preferred accessory plugs into the left and
right
LOADING
sockets.
The unit is supplied with five sets of load
plugs as standard accessories. There are two
each (one per channel) in 100, 200, 500, 1K
and 5K
Ohm options, and are marked on the
sides with their resistance value.
Simply select and insert the loading plugs
which suit your pickup manufacturer’s
recommendation.
MM
(only):
A four-way switch underneath the
PHONO
MM
input socket is for matching the
characteristics of your phono pickup and lead
to the kW Phono. When all the switches are
off (up), the input impedance is 68K Ohms in
parallel with 47pF capacitance.
When each individual lever is moved
downwards, loading of the MM phono input
circuit changes as shown by adjacent graphics
on the rear panel (see also specification on
page 7). If you are not sure which
combination to select, please consult your
dealer.
PICKUP ARM EARTHING
Some turntables or pickup arms are fitted with
an extra wire for chassis earthing. This
should be connected to the chassis earth
terminal
on the back panel.
(Note : this is not a safety earth).
OUTPUT CONNECTIONS
The kW Phono has two line level audio
outputs from RCA sockets on the back panel,
marked
OUTPUTS
. Using good quality
RCA co-axial audio leads, connect the left
and right outputs to the preamplifier input of
your audio system.
