Owner's Manual

In short: While CCA wire is excellent for high frequency AC current (like tweeter voice coils),

it is absolutely bad for high current 12V DC like power and ground for a car audio amplifier.

We have seen CCA wire become a major cause of amplifier failures as buyers are offered

CCA as a low cost alternative to pure copper wire. So always look at the description of the

contents of wire that you purchase. When someone offers to save you some money with

CCA wire just say "No, thank you". Protect your investment with real copper wire.

Planning your power connections

The power end plates of the Zapco ST-B ampliﬁers carry the power connections and the

speaker connections and vary somewhat by the number of channels. The main 12-volt

power input, the 12-volt turn-on wire, and the main Ground connection are common to

both models.

• The +12V connection is the main power input. This must be connected the vehicle

battery's + terminal, and a main system fuse should be placed close to the battery

• The GND connection is the main ground or negative connection. This must be

securely attached to bare metal at the vehicle frame, or other heavy chassis

component with a direct connection to the frame

Note: Seat bolts and seat belt bolts are NOT good ground points

• The REM terminal between the main power and ground is the +12 turn-on input

and can be connected to the head unit turn-on output wire. If none is available it can

be connected to an accessory (ACC) terminal. You should avoid using any ignition-on

(IGN) wire, as they can be noisy