features and specifications

dual crossover mode selectors

when used with normal, full range systems, set these switches to “FULL.”

 

If you wish to use the internal crossovers to power a driver of specific

 

frequency range, use the “LOWPASS” or “HIGHPASS” settings.

dual input level controls

use these controls to match the outputs of your head unit to the amplifier.

 

Starting with your head unit set at about the 2 o’clock position, increase

 

the amp level controls until distortion begins to occur, and reduce slightly

 

from this point.

dual low pass frequency controls

when one or both of the crossover selector switches is in “low pass”

 

mode, one can set the upper frequency limit for audio program sent to

 

the speakers.

dualhighpassfrequencycontrols

when the one or both of crossover selector switch is in “high pass” mode,

 

one can set the lower frequency limit for audio program sent to the

 

speakers.

dual bass boost level controls

this control permits adjustment of the bass level up to an increase of

 

approximately 18 dB in either or both pairs of channels.

low level inputs

this amp features gold-plated RCA input jacks for high impedance input.

 

Use these with car stereo output which uses RCA-type connector cables.

high level inputs

if your car stereo lacks RCA-type output jacks, you may connect speaker

 

output leads to these input connectors.

power LED

this indicator is illuminated when power is applied.

protection LED

this indicator is illuminated when built-in protection circuitry is activated.

power fuse

the fuse protects the amplifier and your car’s electrical system from short

 

circuit conditions.

power terminals

use these connectors to deliver power, ground and remote turn-on control

 

to the amplifier.

speaker connections

these terminals are 14K gold plated to guarantee high conductivity and

 

minimum signal loss.

4 c h a m p P B 6 8 1 X • P B 8 8 1 X

output power @ 14.4v DC, 1KHz

PB681X

PB881X

 

 

 

 

 

 

 

 

 

RMS Power @ 4 Ohms

35 Watts x 4

50 Watts x 4

RMS Power @ 2 Ohms

55 Watts x 4

60 Watts x 4

Maximum Power Output

250 Watts x 4

300 Watts x 4

frequency response

 

 

15 Hz-30 KHz

 

 

 

 

 

 

 

 

input impedance

 

 

 

 

 

 

 

 

 

low level inputs

 

 

10K Ohms

 

 

 

 

 

 

 

 

high level inputs

 

 

100 Ohms

 

 

 

 

 

 

 

 

input sensitivity

 

 

 

11

 

 

 

 

 

 

 

 

 

low level inputs

 

 

250mV

 

 

 

 

 

 

 

 

 

 

 

 

 

 

high level inputs

 

 

2.5V

 

 

 

 

 

 

 

 

 

 

 

 

 

 

power supply voltage

 

14.4V DC Neg. Ground (10.5-16V)

 

 

 

 

matching speaker impedance

 

 

 

 

 

 

 

 

 

stereo mode

 

 

2-4 Ohms

 

 

 

 

 

bridged mode

 

 

4-8 Ohms

 

 

 

 

 

maximum current draw

 

20 A

 

 

30 A

dimensions (W x H x L)

 

 

 

 

 

 

 

 

 

mm

 

276 x 60 x 305

276 x 60 x 394

inches

 

10.9 x 2.4 x 12

10.9 x 2.4 x 15.5

Page 11 Page 13
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Pyramid Car Audio PB781X, PB1881X, PB481X, PB1281X manual PB681X PB881X
Page 11 Page 13

PB1881X, PB881X, PB781X, PB481X, PB1281X specifications

Pyramid Car Audio has established a solid reputation for producing high-quality audio systems that enhance the listening experience in vehicles. Their models PB681X, PB1281X, PB481X, PB781X, and PB881X are popular choices among car audio enthusiasts looking for dependable, high-performance sound systems. Each model comes with its unique features and technologies, catering to various listening preferences and vehicle requirements.

The PB681X is an entry-level offering that doesn't sacrifice quality for affordability. This 6x8-inch speaker delivers a powerful 300 watts peak power with a 4-ohm impedance, providing robust sound with impressive clarity. Its durable poly-injection cone and rubber surround ensure extended longevity while enhancing low-frequency response, making it an ideal choice for those who want better sound without breaking the bank.

For those looking for a bit more power, the PB1281X features an impressive 1000 watts peak power with an 8-inch subwoofer. This model is designed with a high-temperature voice coil that minimizes distortion, delivering crisp and clear sound even at high volumes. Its adjustable ported enclosure adds versatility, allowing users to optimize bass response based on individual tastes.

The PB481X offers a unique combination of features aimed at delivering high fidelity sound. This model integrates a 4-channel amplifier with built-in Bluetooth connectivity, allowing for seamless streaming from mobile devices. With 480 watts peak power, it uses advanced circuitry to efficiently manage power output while ensuring minimal interference and maximum sound quality.

Next in line is the PB781X, which blends power with portability. This 7-inch subwoofer packs a whopping 800 watts of peak power and features a heavy-duty magnet structure. The model is designed for easy installation in a variety of vehicle types, making it an excellent choice for anyone looking to upgrade their sound system without extensive modifications.

Lastly, the PB881X stands out as a premium model, offering advanced technologies and superior sound quality. It features an 8-inch subwoofer capable of producing 1200 watts peak power. The high-quality enclosure is optimized for bass performance, while the durable materials ensure protection against wear and tear. Features like adjustable crossover settings and remote bass control increase flexibility for users who want to customize their audio experience.

In summary, Pyramid Car Audio’s PB681X, PB1281X, PB481X, PB781X, and PB881X models present a diverse lineup suitable for different users, from casual listeners to serious audiophiles. With a focus on durability, performance, and ease of use, these products cater to anyone seeking an enhanced automotive audio experience.
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