Pyramid Car Audio PB1881X User Manual download pdf (Page 14)

dual crossover mode selectors

dual input level controls

dual low pass frequency controls

dual high pass frequency controls

dual bass boost level controls

low level inputs

high level inputs

power LED

protection LED

power fuse

power terminals

speaker connections

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.

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.

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.

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.

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

approximately 18 dB in either or both pairs of channels.

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

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

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

output leads to these input connectors.

this indicator is illuminated when power is applied.

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

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

circuit conditions.

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

to the amplifier.

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

minimum signal loss.

1881X

frequency response

power supply voltage

output power @ 14.4v DC, 1KHz

RMS Power @ 4 Ohms

RMS Power @ 2 Ohms

Maximum Power Output

input sensitivity

low level inputs

high level inputs

75 Watts x 4

120 Watts x 4

450 Watts x 4

15 Hz-30 KHz

250mV

2.5V

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

maximum current draw

dimensions (W x H x L)

inches

2-4 Ohms

4-8 Ohms

matching speaker impedance

stereo mode

bridged mode

input impedance

low level inputs

high level inputs

10K Ohms

100 Ohms

40 A

276 x 60 x 432

10.9 x 2.4 x 17

features and specifications

4 ch amp PB1881X

CH 3/4 Remote Bass Boost Plug in the Remote Bass Boost Control wire in here.

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Pyramid Car Audio PB1881X User Manual Page 14

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