Pyramid Car Audio PB1644 Stereo Amplifier User Manual


 
general features
2
features and speifications
1
3-4
2 4
2ch amp PB744
5-6
4ch amp PB844
7-8
4ch amp PB1644
electrical connections
9
4ch amp PB1644
stereo input connections
2CH amp PB744
13
mono input connections
2CH amp PB744
2/4 channel input connections
4CH amp PB844 PB1644
10
2ch amp PB744
speaker connections
17-18
4CH amp PB844
mounting and installation
23
protection circuitry and troubleshooting
precautions
If this occurs ,carefully inspect the system to
determine the source of the problem.
When the protection circuit is activated by any
of these conditions, the Protection LED will be
illuminated.
If the shutdown was a result of a thermal overload
condition, allow the amplifier to cool down before
attempting to restart it.
If the shutdown was a result of an input overload,
or speaker short circuit, be sure to corr the
condition before restarting.
The amplifier can be restarted by turning the
remote power OFF and then ON again.
No output.
Check both in-line and built-in fuses. Both the +12V and the Remote terminals
must have +12V referenced to chassis ground.
Confirm that all terminal strip connections are secure and tight.
Confirm that the audio signal source(car radio, equalizer, etc.) Is connected
and is supplying output signal. To check if the amp is supplying signal, unplug
the cables from the signal source(but leave them plugged into the amp).
Briefly tap the center pin of each of the disconnected RCA plugs with your finger.
This should produce a noise)feedback) in your speakers.
Only one channel works.
Confirm that all terminal strip connections are secure and tight.
If the above steps fail to improve or clear noise interference, the system
should be checked by a professional mobile audio installer.
If you are using the Low Level RCA input , reverse the input plugs at the
amplifier(i.e.,switch the L with the R). If the channels which is silent switches
to the other side, the problem is either in the head unit/other source or the
connecting cables.
Weak output.
If the noise is a “clicking” or “popping” noise whose rate follows the engine
speed, this usually means that the vehicle is equipped with resistor spark
plugs and wires, or that the ignition is in need of service.
Noise in the audio.
Readjust the Input Level Control(s) to better suit the input signal.
If the noise is a “whine” whose pitch follows the engine speed, confirm that
the amplifier and any other signal sources(hesd unit, etc.) Are properly ground.
Check the Balance control on the head unit(or other source) to verify that it
is set to its midpoint.
Check the routing of the speaker and input wires to make sure they are not
adjacent to wire which interconnect lights and other accessories.
mono input connections
4CH amp PB844 PB1644
4CH amp PB844
19-20
1
22
2ch amp PB744
11
4ch amp PB844
12
14
15
16
21
22
The built-in protection circuitry in the Pyramid
Signature amplifiers will disable the amplifier if it
senses an input overload, a speaker short
circuit, or extreme temperature conditions.
No output.
Confirm that all terminal strip connections are secure and tight.
table of contents
protection
circuitry
troubleshooting