SPECIFICATION FOR
QUAD
303 POWER AMPLIFIER
The figures and curves refer to measurernents on either channel,
with or without the other channel operating.
POWER OUTPUT AND DISTORTION
(with
unrestricted bandwidth)
FREQUENCY RESPONSE:
OUTPUT SOURCE IMPEDANCE:
INPUT
LEVEL:
INPUT IMPEDANCE:
HUM AND NOISE:
INTDRCHANITIEL CROSSTALK :
STABILITY:
POWER INPUT:
WEIGHT:
DIMENSIONS:
OIIIER APPLICATIONS:
Page Twenty-two
7O Hz
O.O3%
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cj.6ln
I
anv level up to 28w
16 ohms
load
io nri
o.lV;
1
nnY level up to 45w
8
ohms
load
-ldB
(ref:
lkHz) at 30 Hz and 35kHz into
8 ohms
-ldB
(ref
: lkHz) at 2O Hz and
35kHz
into
16 ohms
0.3
ohms in series with 2000pF
and 6pH.
0.5V rms
fqr 30
watts
into
16
ohms
22K ohms in
parallel
with 60pF
-l00dB
below full output
30-10,000 Hz
better
than 60dB. Input
load
I
K ohms.
unconditionally
stable with any load.
100-125 or 200-250V 50-60 Hz.
40-200
watts depending on signal level.
l8 lb.
(8.2Ke.)
Width 4i"
(l20mm.)
Heisht 6+"
(159mm.)
Depth l2*"
(324mm.)
(plus
1]"
(38mm.)
for connectors).
The
ampli{er may be used for any
purposes
into
load
impedances
greater
than 8 ohms.
Below 8 ohms
applications
should be rbstricted to
music and speech reproduction
or intermittent
sine-wave
dutv.
I
I
I
;