Pyramid Car Audio PB1881X User Manual

congratulations...on your purchase of a Pyramid Crystal Seriesamplifier. This amplifier extends the Pyramidtradition into a totally new series of amps

frequency responsepower supply voltageoutput power @ 14.4v DC, 1KHzRMS Power @ 4 OhmsRMS Power @ 2 OhmsMaximum Power Outputinput sensitivitylow level

10pb681Xpb881Xfeatures and controls4 ch amp PB681X • PB881Xprotection LEDpower LEDch 3/4 low level inputsch 3/4 high level inputsch 3/4 bass boost lev

PB681Xfrequency responsepower supply voltageoutput power @ 14.4v DC, 1KHzRMS Power @ 4 OhmsRMS Power @ 2 OhmsMaximum Power Outputinput sensitivitylow

12pb1881Xfeatures and controls4 ch amp PB1881Xprotection LEDpower LEDspeaker connectionspower terminalspower fusech 1/2 low level inputsch 1/2 high le

dual crossover mode selectorsdual input level controlsdual low pass frequency controlsdual high pass frequency controlsdual bass boost level controlsl

GROUND+12V BATTREMFUSELRBRIDGED+--+-+to remote turn-on+12Vhead unit12V battery14electrical connections2 ch amp PB481X • PB781X • PB1281Xpb481Xpb781Xpb

to remote turn-on+12Vhead unit12V batteryCH3CH4GROUND+12V BATTREMBRIDGEDFUSEBRIDGED+--+-+-+-+-+CH1CH2to remote turn-on+12Vhead unit12V batteryREMCH3CH

head unitL/R AudioOutputsfrom speaker terminalsLL RRusing high level inputshead unitwiring harnessPLEASE NOTE! If using high levelinputs, do not use

head unitusing low level inputsPLEASE NOTE! If using high levelinputs, do not use the low level RCAinputs at the same time!using high level inputsTo

4 CH input connections using low level inputs2 CH input connections using low level inputsY adaptorsRLFREQ.CH 3LOW INLEVELMIN MAXCH 4HPF+18db035400

table of contents1mounting and installation25protection circuitry and troubleshooting2619202223-2421speaker connectionsPB681X/PB881X/PB1881Xspeaker co

FREQ.CH 3LOW INLEVELMIN MAXCH 4HPF+18db035400HzLPF80HPF2.5k2.5kHz+18db0BASSBOOSTMIN MAXFREQ.CH 1CH 280Hz35400HzLPFHI INCH4 CH3+ - - +HI INCH

RIGHT FRONT Audio OutputsLEFT FRONT Audio Outputs4 CH mono input connections using low level inputs2 CH mono input connections using low level input

4 CH floating ground connections4 CH harness wiringfor common ground connectionsfrom speaker terminalsPLEASE NOTE! If using high level inputs,do not u

Stereo Output ModeBridged Mono Output ModespeakerMINIMUMSPEAKERIMPEDANCE4 OHMS!22speaker connections2 ch amp PB481X • PB781X • PB1281Xpb481Xpb781Xpb12

4 CH Output ModeBridged Dual Mono Output ModeREMCH3CH4GROUND+12V BATTBRIDGEDFUSEBRIDGED+--+-+-+-+-+CH1CH2CH3CH4GROUND+12V BATTREMBRIDGEDFUSEBRIDGED+--

2 CH Bridged Output Mode with Subwoofer Outputpb681Xpb881Xpb1881Xspeaker connections4 ch amp PB681X • PB881X • PB1881X24MINIMUMSPEAKERIMPEDANCE4 OHMS!

mounting and installation25fuseswiring tipsWhen making electrical connections to your amplifier, please observe thefollowing:Use at least 8 gauge wire

The built-in protection circuitry in the PyramidCrystal amplifiers will disable the amplifier if itsenses an input overload, a speaker short circuit,o

Do not operate the amplifier when it is unmounted.Attach all audio system components securely withinthe automobile to prevent damage, especially in an

general features2· 300 Watts x 2 Output· 600 Watts x 1 Bridged Output· Variable Hi/Lo Electronic CrossoverNetwork· Variable Bass Boost (0 - +18 dB @ 6

general features3· 300 Watts x 4 Output· 600W x 2 Bridged Output (300W x 2 + 600W x 1)· Dual Variable Hi/Lo Electronic Crossover Network· Dual Variabl

high level inputsinput level controlcrossover mode selectorprotection LEDlow pass frequency controlbass boost levellow level inputspower LEDhigh pass

frequency responsepower supply voltageoutput power @ 14.4v DC, 1KHzRMS Power @ 4 OhmsRMS Power @ 2 OhmsMaximum Power Outputinput sensitivitylow level

high level inputsinput level controlcrossover mode selectorprotection LEDlow pass frequency controlbass boost levellow level inputspower LEDhigh pass

7features and specifications2 ch amp PB781Xcrossover mode selectorinput level controllow pass frequency controlhigh pass frequency controlbass boost l

speaker connectionspower terminalspower fuseRemote Bass Boost8pb1281Xfeatures and controls2 ch amp PB1281Xhigh level inputsinput level controlcrossove