Power Provision Indications - AIV Germanium One Einbauanleitung Und Betriebsanleitung

Power Provision Indications

In order to prevent voltage differences and ground loops, the same cable diameter must be used for the
negative conductor (-) as for the positive conductor (+). Because of the potential large differences, the
auto body is not appropriate as the negative pole in this application.
In order to prevent distortion, all audio devices must be attached to a central ground. This can be
determined during installation in accordance with the type of vehicle. A direct connection at the negative
terminal of the battery is not always advantageous for technical failure reasons. For this reason, select
the engine block or search for a minimal disturbance on the auto body and from this point supply all
devices with the negative conductor (–) (use multiplier).
The same criteria apply for the positive terminal (+). The battery lines must be placed on multiplier to
avoid distortion loops. All audio devices (including radio and CD player) as well as memory lines are
supplied with current from this point.
If for reasons of interference suppression the positive (+) current supply must be filtered, then only one
filter choke with appropriate total maximum capacity should be placed into the (+) main line (consider
total value of current of all devices). Additional filters in the individual equipment plus supply worsen the
screening effect.
With high rendition volumes, especially in the bass tone range, the amplifier can distort due to long cable
lengths causing a premature voltage drop. This can be prevented by using a cable with a large diameter
and minimizing the transition resistance at the connection points. Appropriate precautions can be taken
by using low-loss battery clamps and multiplier during the first installation.
With insufficient cable diameter or large requirements of electrical current within the impulse range of the
bass rendition or by active operation of more than one amplifier, an additional buffer condenser can help
to improve the clippings. This supplies sufficient current in the millisecond range through high capacity
(~1F/40V) and allows for additional screening and leveling of current supply. The assembly is performed
directly at the amplifier or multiplier.
Determining the „Central Ground"
Completely install and check system.
Provisionally make the minus (–) connection of the audio system on the auto body minus (Point 1).
If the potential equalization line is not available, shift from the generator housing to Point 1.
Power on system, insert an empty cassette or CD (0dB-track) and set volume to the minimum level.
Start the engine and put all power users into operation, including light, windshield defrosters, and
blowers.
If the revving of the engine creates whistling distortion that becomes more or less frequent
during revving, the ground connection must be corrected.
Pull antenna plugs out of car radio. If the distortion disappears there is a potential distortion
„antenna ground to battery."
Remedy: Insert galvanic isolated separation filters into the antenna cable. (Part-No. 140259)
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Germanium One