Specifications

FINAL STEPS
of the cabinet from the outside, using a small screwdriver.
The flat portion
should be the actual resting or contact surface.
You have now completed the
assembly and wiring of your amplifier.
When
you have completed the following steps your
ampl ifier will be
ready for use.
9. ( ) Fig. 12.
Insert the perforated cover into the "
rails
" on the side pieces
and slide it forward fully.
1) To catch any wiring errors, it is suggested that the entire wiring be checked
point-
by-
point against the wiring instructions
(and preferably also against the
schematic wiring diagram in order to become more familiar with the component
layout and circuitry).
While doing so, check for rosin joints,
loose lumps of
solder, poor leads dress, and accidental shorts
or leakage paths arising from the
flowof rosin between contacts (remove with a stiff brush dipped in carbon
tet-
rachloride, being careful not to
spring contacts when cleaning switches).
10. ( ) Fig. 12. Mount the control plate on the bezel (locating the hole for
the plastic pilot jewel, above and between the focus and bass controls, over the corresponding hole in the bezel), using two each #4-
40 x 1/4brass screws,
'410ckwashers and #4 hex nuts to fasten it to the
bezel.
Press the plastic pilot
jewel into place on the control plate.
2)
Insert tubes VI through V12 in their sockets.
Be sure to insert the cqrrect
tube in each socket. Place a shield over
tubes VI, V2, V3, and V4.
See tube
layout in instruction.
Insert fuse Fl, in fuse holder.
11. ( )
Fig. 12. Fit the bezel and control plate over the projecting control
and sl ide switch shafts, onto the ends of the side pieces and the
perforated
cover. Assemble the bezel
to the side pieces with four #6 x 1/4
brown colored
P. K. screws.
Before tightening the screws finally, be sure there is adequate
. play to slide the perforated cover out.
3) If you have a VTVM or VOM, make the following resistance checks before connecting to the a-c line: Check for a cold d-c resistance of at least 1/20hm
across the a-c I ine plug; check for a
resistance of at least 40 ohms between
ground and pins
1 of XVII and XVI2; check for a resistance of at least 200KQbe-
tween pin 30fXVll, XV12and ground. Allow sufficient time for the electrolytic
capacitors to be charged by the
ohmmeter battery in this last
measurement.
These measurements constitute a reasonable check of
the power supply com-
ponents and wiring before applying power.
If you do not obtain the
minimum
resistance values indicated, do not procede to the next step until the cause is
discovered and the condition remedied.
12. ( )
Fig. 12. Fasten the
perforated cover to the two tinnerman angle
brackets (previously mounted on the rear edge of the chassis surface) and the
two angle brackets on the side brackets using four #8 P.
K. Ty~e Z screws.
13. ( ) Fig. 12. Set all controls to the furthest counter-clockwise position.
Mount the knobs on the shafts with the indicating dots pointing as
follows:
INPUT SELECTOR knob at AUX;
a FUNCTION SELECTOR at STEREO; FOCUS
at -5; LEVEL at 0; BASS knobs at -5; TREBLE knobs at -5.
5. ( )
Fig. 12. On the rear edge of the chassis surface,
mount the two tin-
nerman speed nut angle brackets, using
a #8 P. K. -
Type Z screw for each.
14) OPERATIONAL CHECKS ON COMPLETED KITS: In
the INSTRUCTION
part of this manual you wi II find a section
titled "
Electrical Installation "
. Read
this carefully and connect your speakers, phonograph)' and tuners to the ampl
ifier
in accordance with the instructions given.
Then read the section titled "Oper-
ating Instructions
II and operate
all the controls, checking aurally for the results
described. If the amplifier does not operate at all or operates incorrectly, use
the TROUBLE-SHOOTING chart and the VOLTAGE &
RESISTANCE chart
discover and remedy the difficulty.
As the Trouble Shooting Chart presumes a
properly wired amplifier, which
may not be the case, recheck the wiring for
errors or reversed connections and continuity.
4. ( ) Fig. 12. Assemble the
left and right side pieces to the chassis. Each.
side piece is
mounted with two #8-
32 x 3/8 brown colored
screws, two #8-
hex nuts, and two #8 lockwashers.
6. ~ )
Fig. 12. On the bottom flange
of each side piece, press a tinnerman
#8-
32 - Type J speed nut in place over each of the three
holes. The
shorter
length of the nuts face up
towards you.
7. ( ) Fi
12. Mount the bottom plate on the bottom
flanges of the sidepieces,
using six 8-
32 x 3/8uncolored screws. Note that the rear flange on He bot-
tom plate fits over the outside of the rear
chassis apron.
15) If the amplifier is to be mounted in a console
, read carefully the "
Mechan-
icol Installation
II section
of the instructions and follow the procedures outl ined.
8. ( )
Fig. 12.
Install the rubber feet in the openings
provided in the botiom
plate. The method
is to work the rounded portion of each foot
into the interior
16) Detailed information as to connection of
phonographs, tuners,
etc., to the
amplifier inputs and speaker systems to the
ampl ifieroutputs,
oswell as a-
c line
plug connections and' use of the hum adjustment control, is given in the "
Elec-
trical Installation
" section.