QUAD 33 - Pickup (Disc) Input

instructions
provided
with
the
loudspeaker
should be
followed.
Each loudspeaker
should
be capable
of
hand-
ling
the full
output of the
power
amplifier.
Notez
Quad
electrostatic
loudspeakers
prior
to
serial
number 16800
need
slight modification
before
being used
with the
Quad
303
amplifier.
Pickup
(Disc)
Input
The
pickup
input
is via a 5-pin
plug
and the
same
connections
are
used for all
types
of
pickup.
The neces-
sary
change in input
circuitry
to
suit different
types of
pickup
is
achieved
by the Disc
Adaptor
Board.
This
board
provides
matching
for
pickups
of low
output
magnetic
types
(Ml),
high
output magnetic
types
(M2),
ceramic
types
(Cl),
and
a
spare
position
(Sl),
according
to the
edge
inserted
into
the holder.
(See
Specification
on Page
20).
The M2
position
should normally
be
used for
most
magnetic
pickups
but
for
those
with
very
low
outputs
Ml
should
be used instead.
The fourth position
is
to
enable
the
amateur
or
professional
engineer
to
provide
any
other
circuit
con-
flguration
he may
require
and
it
also
provides,
of
course,
facility
for
accommodating
any
new
type
of
pickup
which
may
be introduced,
requiring
a different
input
from
existing
types.
Page
Seven
*6lril
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foebd,
FIG.
5