Pyramid Car Audio PB417X, PB717X, PB617X, PB1617X, PB1217X, PB317X Troubleshooting, Table of contents

Protection circuitry

The built-in protection circuitry in the pyramid Arctic amplifiers will disable the amplifier if it senses an input overload, a speaker short circuit, or extreme temperature conditions.

When the protection circuit is activated by any of these conditions, the Protection LED will be illuminated.

If this occurs ,carefully inspect the system to determine the source of the problem.

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.

troubleshooting

No output.

Confirm that all terminal strip connections are secure and tight.

Check both in-line and built-in fuses. Both the +12V and the Remote terminals

must have +12V referenced to chassis ground.

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.	24
Confirm that all terminal strip connections are secure and tight.

Check the Balance control on the head unit(or other source) to verify that it

is set to its midpoint.

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.

Readjust the Input Level Control(s) to better suit the input signal.

Noise in the audio.

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. 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.

Check the routing of the speaker and input wires to make sure they are not adjacent to wire which interconnect lights and other accessories.

If the above steps fail to improve or clear noise interference, the system should be checked by a professional mobile audio installer.

table of contents

general features	2-3	mono input connections
features and specifications		4CH amp PB417X PB617X PB1617X	18
2ch amp PB317X PB717X	4-5	speaker connections
2ch amp PB1217X	6-7	2ch amp PB317X PB717X	19
4ch amp PB417X PB617X	8-9	2ch amp PB1217X	20
4ch amp PB1617X	10-11
		4CH amp PB417X PB617X PB1617X	21-22
electrical connections
		mounting and installation
2ch amp PB317X PB717X	12		23	1
2ch amp PB1217X	13	protection circuitry and troubleshooting	24
4ch amp PB417X PB617X PB1617X	14
stereo input connections		precautions	25
2CH amp PB317X PB717X PB1217X	15
mono input connections
2CH amp PB317X PB717X PB1217X	16
2/4 channel input connections
4CH amp PB417X PB617X PB1617X	17