Laney
5
Input Wiring
The CA amplifier is factory set to +4dB input sensitivity, and internally selectable to either 0dB, +4dB or 26dB
system. Setting the input sensitivity requires the removal of the top cover. If in any doubt, consult a qualified
service engineer. For details on changing sensitivity setting see page 13
The 1/4“ Jack and 3pin XLR inputs are wired in parallel,
Pin1. Ground
Pin2. Hot
Pin3. Col
Tips.
1. For all input wiring use good quality shielded wire only. Cables with foil wrap shield or a high density braid are
superior. Cables with stranded spiral shield, although flexible, will break down over time and coase noise
problems.
2. Try to avoid unbalanced lines with professional equipment. If you have no choice, keep the cables as short as
possible.
3. To minimise hum and crosstalk, avoid running low level input, high level output and AC power feeds in the same
path. Try to run differing signal paths at 90 degrees to each other. If you must use a common path for all cables,
use a star-quad cable for the low level signals.
4. When changing input connectors or wiring, Always turn the amplifier volume controls all the way down(anti-
clockwise)
5. When changing output connectors, always turn the amplifier volume levels fully down, and preferably, switch off
mains supply.
Output Wiring
1
2
3
Sleeve = Screen (GND)
Ring = Cold
Tip = Hot
1. To maintain good bass response, Always use the lowest DC resistance cable you can afford which will terminate
safely in your connector
2 To prevent short circuits, Always wrap or otherwise insulate exposed loudspeaker cable connectors.
3. Do not use connectors that could accidently tie conductors together. Eg. Standard 1/4“ jacks.
4. Never use connectors that could accidentally be plugged into an AC power outlet.
5. Avoid connectors with low current carrying capacity, such as XLRs
6. Never use the 2+,2- pins on the output speakon(tm) unless you specifically need them. Eg for biamping.
What gauge speaker wire should I use in my system?
Can I run one channel of my CA Amplifier at a different impedance than the other channel?
For the best speaker damping and least amount of power
loss you will want to use the heaviest gauge that is practical. The length of the speaker wire should be considered
when considering wire gauge. The shorter the run, the smaller gauge you can use with minimum power and
damping factor loss. The longer the run, the heavier gauge you will need to minimise power and damping factor
loss. You will also want to consider the size of power amplifier you are using. The larger the amplifier, the heavier
gauge you will want to use. For general use consider 2mm or above.
Yes. All CA amplifiers can be treated as if they are two separate "mono" amplifiers (One channel completely
independent of the other) For example: A CA1500 can function with a single 8 ohm speaker on channel one and
two 8 ohm speakers on channel two.
Wiring a standard Neutrik NL4 Speakon ™ For normal operation.
2
- Pin configuration.
2+
2-
1-
1+
+
-
CA MANUAL
