Wadia a315 Owner's Manual page 10

Output Terminals
When connecting the Loudspeaker Hookup Cables
to the a315 Power Amplifier Output Terminals please
follow the steps below:
1. Rotate the top of the Output Terminal Post coun-
terclockwise until an opening
appears. Refer to figures A and
B.
2. Insert the Loudspeaker hookup
cable into the Output Terminal
Post opening or the cable spade
lug around the center post of
the Output Terminal. Refer to
figure C.
3. Rotate the top of the Output
Terminal Post clockwise until
it is finger tight. Refer to figure
D.
4. Place the supplied Wadia
Wrench over the top of the
Output Terminal and rotate it
one quarter of a turn (90°) to
secure the Loudspeaker Cable
Connection. Do not over
tighten. Refer to figure E.
How to Connect
Caution: Do not connect the AC Power Cord to the a315
Rear Panel until after the Loudspeaker Con-
nections are made. Failure to observe this could
result in Electric Shock.
The connection instructions below, together with the
a315 Connection Diagram located on the separate
folded sheet " 1A", is an example of a typical audio
system. Your system may vary from this, however the
actual components would be connected in a similar
10
manner. For additional information refer to "Connec-
tor and Cable Information" on page 4.
1. For remote AC Power Control of the a315, connect
a control cable from the Audio Preamplifier or
Source Device Trigger Out to the a315 TRIGGER
IN.
Note: When a Trigger Control Cable is connected
Opening
Figure A Figure B
2. Connect XLR cables from the Balanced Output
(L&R) of an Audio Preamplifier/Source Device to
the a315 BALanced INPUTS (Right and Left).
Note: An optional hookup is to use unbalanced
This Wadia a315 Power Amplifier is designed for
Figure C Figure D
Loudspeakers with an impedance of 4 ohms or 8
ohms. Connect a single Loudspeaker only to the Right
and Left Output Terminals.
When connecting Loudspeakers to the a315 it is
very important to use cables of adequate size, so there
is little to no power loss in the cables. The size is
Figure E
specified in Gauge Numbers or AWG (American Wire
Gauge). The smaller the Gauge number, the larger the
wire size:
Loudspeaker Cable Distance vs Wire Gauge Guide
Loudspeaker
Impedance
4 Ohms
8 Ohms
3. Prepare the Loudspeaker Hookup Cable for attach-
ment to the a315 Power Amplifier:
Bare wire cable ends:
Carefully remove sufficient insulation from the
between the a315 and Preamplifier/Source
Device, the AUTO OFF Feature is bypassed.
Refer to page 15.
cable and place the INPUT MODE Switch in
the UNBALanced Position.
25 feet 50 feet
(7.62 meters) (15.24 meters) (30.48 meters)
or less or less
14AWG 12AWG
16AWG 14AWG
cable ends, refer to figures 2, 3 & 4. If the cable
is stranded, carefully twist the strands together
as tightly as possible.
Notes: 1. If desired, the twisted ends can be tinned
with solder to keep the strands together.
2. The prepared bare wire cable ends may be
inserted into spade lug connectors.
3. Banana plugs are for use in the United
States and Canada only.
Banana Plugs are for use in the United States and
Canada only:
4. Attach the previously prepared bare wire cable ends
into the banana plugs and secure the
connections. Refer to figure F.
5. Rotate the top of the Output Terminal
Post clockwise until it is finger tight.
Refer to figure G. Then using the
Wadia Wrench, rotate the top of the
Output Terminal one quarter of a turn
(90°). Do not over tighten. Refer to
figure E.
6. Referring to figure H, con-
100 feet nect the Loudspeaker hookup
cables with banana plugs into
or less
the hole at the end of the a315
10AWG
Negative and Positive Output
12AWG
Terminals, being careful to observe the correct
polarities.
Refer to "General Information" Note 3 on page 4 for
additional information.
Figure 2 Figure 3 Figure 4
Figure F
Figure G
Figure H