Heathkit W-5M User Manual

SENSITIVITY:
Figure
7
below
indicates
voltage
input
required
to
drive
the amplifier
through
its entire
output
power
range.
VOLTAGE
OUTPUT
(16.0.)
l0V
15V
20
V
25V
5W IOW
15
W
20 W 25W
POWER
OUTPUT
HEATHKIT
W-5M
INPUT
REQUIREMENTS
Figure
7
The
broken line
has
been plotted
to show the linearity
of the input-output voltage
characteristic
of the amplifier.
HUM AND
NOISE:
80.2
db
below 250
milliwatts, unweighted.
(General
average listening
level.)
84.2
db below
5 watts,
unweighted.
(Loud
average
listening
level.)
99
db
below 25
watts,
unweighted.
A
noise
level
of
60 db below
100%
modulation
for
AM
or
FM
broadcast
stations
is
recognized
as
acceptable
by the Federal
Communications Commission.
Most stations
exceed
this
figure
to
some extent.
Modern
LP
recordings
seldom exceed 40
db
below
average
program level.
Broad-
cast
quality
tape recorders attain
a
noise level
60 db below full
output.
The
extremely
low
noise
level
of
the
W-5M
exceeds these requirements
comfortably,
even
at
very
low
output
levels
where
noise
is
most noticeable.
OUTPUT
TUBE
BALANCE: Unique
”Bass-Bal"
circuit, requires
only
simple
volt-
meter for indication
of exact
balance.
FEEDBACK
FACTOR:
18.1 db
of feedback is applied
around
the
entire
am-
plifier and
output transformer.
OUTPUT IMPEDANCES:
4,
8 or 16 ohms,
unbalanced.
DAMPING
FACTOR:
40
Page
6

Heathkit W-5M Specifications

General

Brand	Heathkit
Model	W-5M
Category	Amplifier
Language	English