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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 for Bi-Amp
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 " 1B", is an example of a typical audio
system. Your system may vary from this, however the
actual components would be connected in a similar
manner. For additional information refer to "Connec-
12
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
2. Connect a control cable from the Amplifier One
Figure A
Figure B
TRIGGER OUT to Amplifier Two TRIGGER IN.
Note: There is approximately a one-half second de-
3. Connect audio cables from the Unbalanced Output
Figure C
Figure D
(L&R) of an Audio Preamplifier/Source Device to
the amplifier one UNBALanced INPUTS (Right
and Left).
Note: Place the INPUT MODE Switch to the UN-
4. Connect balanced XLR cables from the Balanced
Figure E
Output (L&R) of an Audio Preamplifier/Source
Device to the amplifier two BALanced INPUTS
(Right and Left).
Note: Place the INPUT MODE Switch to the BAL-
The Wadia a315 Power Amplifier is designed for
Loudspeakers with an impedance of 4 ohms or 8
ohms. Connect a single Loudspeaker only to the Out-
put 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
specified in Gauge Numbers or AWG (American Wire
Gauge).
between the a315 and Preamplifier/Source
Device, the AUTO OFF Feature is bypassed.
Refer to page 15.
lay added to the TRIGGER OUT signal in a315
Power Amplifier to reduce the strain on the AC
Power Line. This will delay the Turn-On of the
second a315 Power Amplifier.
BALanced position.
anced position.
The smaller the Gauge number, the larger the wire
size:
Loudspeaker Cable Distance vs Wire Gauge Guide
25 feet
50 feet
Loudspeaker
(7.62 meters)
(15.24 meters)
Impedance
or less
or less
4 Ohms
14AWG
12AWG
8 Ohms
16AWG
14AWG
5. Prepare the Loudspeaker Hookup Cable for attach-
ment to the a315 Power Amplifier:
Bare wire cable ends:
Carefully remove sufficient insulation from the
cable ends, refer to figures 2, 3 & 4. If the cable
is stranded, carefully twist the strands together
as tightly as possible.
Figure 2
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:
6. Attach the previously prepared bare
wire cable ends into the banana plugs
and secure the connections. Refer to
figure F.
7. 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
100 feet
(30.48 meters)
or less
10AWG
12AWG
Figure 3
Figure 4
Figure F
Figure G
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