Pyramid Car Audio PB1644, PB744, PB844 Protection Circuitry, Troubleshooting, Table of contents

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protection

circuitry

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.

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.

22

Confirm that all terminal strip connections are secure and tight.

Check the Balance control on the head unit(or other source) to ver

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

mono input connections

15

 

features and speifications

 

4CH amp PB844 PB1644

 

 

 

 

 

2ch amp PB744

3-4

speaker connections

 

 

4ch amp PB844

5-6

2ch amp PB744 16

 

4ch amp PB1644

7-8

4CH amp PB844

17-18

 

 

 

 

electrical connections

 

4CH amp PB844

19-20

 

 

 

 

 

2ch amp PB744

9

mounting and installation

21

1

4ch amp PB844

10

 

 

4ch amp PB1644

11

protection circuitry and troubleshooting

22

stereo input connections

12

precautions

 

 

2CH amp PB744

23

 

mono input connections

 

 

 

 

2CH amp PB744

13

 

 

 

2/4 channel input connections

 

 

 

 

4CH amp PB844 PB1644

14

 

 

 

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Contents Precautions CongratulationsProtection Circuitry TroubleshootingTable of contents General features Mounting and installation2ch amp PB744 Features and controlsSpeaker connections 4ch amp PB1644 Features and specifications2ch amp PB744 Speaker connections4ch amp PB844 4ch amp PB844Features and specifications 4ch amp PB844 Bridged Mono Output Mode 4ch amp PB16444ch amp PB844 PB1644 Mono connectionsChannel input connections Electrical connectionsMono input connections Stereo input connections Audio head unit Outputs

PB1644, PB844, PB744 specifications

Pyramid Car Audio has established itself as a notable player in the audio equipment market, delivering quality products tailored for the automotive sector. Among their lineup, the PB844, PB744, and PB1644 models stand out as excellent choices for car enthusiasts looking to enhance their audio experience.

The Pyramid PB844 is a powerhouse, featuring an impressive peak power of 800 watts and a maximum RMS of 400 watts. This 8-inch speaker is designed to deliver a deep bass response while maintaining clarity across all frequencies. One of the standout features of the PB844 is its 3-way design, which allows for a richer sound stage. The dual voice coils optimize the performance, ensuring that users can enjoy a full range of audio without distortion. The poly injection cone provides durability and resistance to damage, which is particularly useful in the demanding environment of a car.

Moving to the Pyramid PB744, this model presents a more compact solution without sacrificing sound quality. It comes with a peak power of 600 watts and 300 watts RMS. This 6.5-inch speaker also utilizes a 3-way component design, allowing for a more detailed sound reproduction. The inclusion of a butyl rubber surround enhances the speaker's longevity, while a ceramic magnet contributes to its robust audio performance. The PB744 caters to those who seek a balance between size and acoustic capability.

On the other hand, the Pyramid PB1644 is designed for users who crave powerful sound in a larger format. With a peak power rating of 1200 watts and RMS value of 600 watts, this 16-inch speaker is ideal for heavy bass enthusiasts. Its large poly injection cone and heavy-duty voice coil enable it to handle extreme volumes without compromising sound quality. The PB1644 utilizes a dual voice coil configuration, providing the flexibility to enhance connectivity options within the audio system.

Across the range, Pyramid emphasizes technology like high-temperature voice coils and lightweight materials, which contribute to performance efficiency. Each model is designed to be user-friendly, with easy installation processes that make them accessible for both novice and experienced audio enthusiasts. The durable builds combined with high power handling make these speakers not only robust but also a great investment for any car audio setup. Pyramid Car Audio continues to offer solutions that resonate with consumers seeking powerful, clear, and reliable sound experiences on the go.