Specifications - Eico HF-14 Instruction Manual

general description
general
The EICO HF-14
it
a
14 waft high
fidelity basic
power
amplifier
employing two EL84
output tubes
in
push-pull
and a high quality output transformer.
The high
power
sensitivity
of these
remarkably
fine tubes
eliminates the
necessity for
additional driver stages, permitting the use
of a large
amountof
inverse
feedback with a
highstability
margin. The lower operating voltages required
and
the
use of
EZ81
rectifier
tube
having a
warm-up
characteris-
tic
exactly
matched
to
the output
tubes, result in
a
power
supply
of
exceptional
reliability
as
well
as
extended out-
put tube
life.
Filter
electrolytics
and the rectifier
oper-
ate well
below
maximum
ratings
and voltage surges at
starting are eliminated.
The
HF-14
has
been
designed
to
maintain
Its
excellent
characteristics
under speaker load (Including electrostatic
types) as well as the resistive
load normallyused
for test-
ing.
Phase corrections
have been provided at both
ex-
tremes of the audio spectrum
to insure stability
under
all
conceivable conditions
and
to insure that
variations In
components and
construction will
not
<dfect
the perfor-
mance. Stability
is
maintained
on
all
speaker
taps
with
loads
ranging from zero
to infinity.
Overload character-
istics
are excellent
and theHF-l4wiil notexhlbit
bounce
or flutter
under pulsed conditions.
TheHF-14can
be operated from any
preanpl ifier
control
unit.
A
power
take-off socket
is
provided for
powering
the
EICO HF-65AorHF-6lApre«nplifier
control.
Other
features
include
a
panel
mount
fuse holder,
switched and
unswitched convenience
outlets,
and heavy gauge cad-
mium
plated steel chassis finished
in
bdied enamel,
SPECIFICATIONS
Rated Output Power
;
14 watts continuous,
28
watts
peak.
1M
Distortion (60cps
&
7kc
at
4;
1): 1
.
7%
at
14 watts,
0.
33%
at
26
watts, 0.
1
%
at
4
watts.
Harmonic
Distortion
;
8 watts
less
than
1%
from
Me
to
lOkc.
10 watts:
less
than
1%
from
40c
to
lOkc.
14 watts:
less
than
1%
from
50c
to
5kc.
20c
distortion:
2%
at
4.
2 watts.
Transient Response: excellent square
wave
reproduction (4usec
rise
time);
negligible ringing, rapid
settling
on lOkc
square wave.
inverse
Feedback: 20db
Tubes:
1-
ECCB3/I2AX/, 2- bLB4,
1-fcZUI
Stab
i
li
ty
Margin
:
1
2 db
Power
Source:
117
volts,
60cps.
Damping
Factor:
above
8,
20cp$
to
20kc.
Sensitivity
:
1.
25
volts for 12
watts output.
Hum;
90 db below
rated
output
Speaker Connections:
4,
8,
and 16 ohms.
1
Power Consumption
:
65 watts
Size:
HWD:
3 3/4" x 12"
x
4".
Shipping Weight: 10
lbs.