Pyramid PB-1038GX User Manual
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Pyramid PB-1038GX User Manual

Royal blue series two/four channel high performance power amplifier
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PB-183 8 GX
PB-738GX
PB-238GX
PB- 6 3 8 GX
PB-1 0 3 8 G X
USER'S MANUAL
www.pyramidcaraudio.com

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Summary of Contents for Pyramid PB-1038GX

  • Page 1 PB-183 8 GX PB-738GX PB-238GX PB- 6 3 8 GX PB-1 0 3 8 G X USER'S MANUAL www.pyramidcaraudio.com...
  • Page 2 When you check the list of features offered by the PB-238GX, PB-638GX, PB-738GX, PB-1038GX, PB- 1838GX, you’ll know you made the right choice with a Pyramid Power amplifier.

  • Page 3: Table Of Contents

    PB-238GX PB-738GX PB-1838GX PB-638GX/PB-1038GX electrical connections 10-11 PB-238GX PB-638GX/PB-738GX PB-1038GX/PB-1838GX stereo input connections PB-738GX/PB-1838GX mono input connections PB-738GX/PB-1838GX 2/4 channel input connections 14-15 PB-238GX high level input connections PB-638GX/PB-1038GX mono input connections...

  • Page 4: General Features

    general features PB -238G X PB -638G X High Performance 400 Watt 4 Channel Amplifier High Performance 1600 Watt 4 Channel Bridgeable MOSFET Amplifier · 100 Watts x 4 Output · 400 Watts x 4 Output · Variable Input Level (Gain) Control ·...
  • Page 5 general features PB- 1038G X High Performance 4000 Watt 4 Channel Bridgeable MOSFET Amplifier · 1000 Watts x 4 Output · 2000 Watts x 2 Bridged Output(1000Wx2+2000Wx1) · Dual Variable Hi/Lo Electronic Crossover Network · Dual Variable Bass Boost (0 - +18 dB @ 60Hz) ·...

  • Page 6: Features And Controls

    CH 4 HI IN CH4 CH3 high level inputs low level inputs input level control speaker connections features and controls 4 ch amp PB-238GX 4 CHANNEL POWER AMPLIFIER LOW IN LOW IN CH 3 CH 1 CH 2 LEVEL LEVEL HI IN CH2 CH1 POWER...

  • Page 7: Features And Specifications

    features and specifications input level control use this control 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 control until distortion begins to occur, and reduce slightly from this point.
  • Page 8 power LED 2 CHANNEL MOSFET AMPLIFIER protection LED REMOTE BASS BOOST Remote Bass Boost PROTECT POWER high pass frequency control low pass frequency control bass boost level crossover mode selector speaker connections BRIDGED features and controls 2 ch amp PB-738GX • PB-1238GX BASS BOOST LEVEL...

  • Page 9: Input Sensitivity

    features and specifications 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. input level controls use these controls to match the outputs of your head unit to the amplifier.
  • Page 10 3/4 bass boost level control ch 3/4 low pass frequency control ch 3/4 high pass frequency control protection LED power LED speaker connections BRIDGED features and controls 4 ch amp PB-638GX • PB-1038GX BASS BASS BOOST BOOST FREQ. LEVEL CH 2...
  • Page 11 14K gold plated to guarantee high conductivity and minimum signal loss. features and specifications 4 ch amp PB-638GX • PB-1038GX output power @ 14.4v DC, 1KHz RMS Power @ 4 Ohms RMS Power @ 2 Ohms...

  • Page 12: Electrical Connections

    electrical connections 2 ch amp PB-738GX • PB-1838GX FUSE GROUND +12V BATT BRIDGED 12V battery to remote turn-on +12V head unit...
  • Page 13 4 ch amp PB-238GX • PB-638GX • PB-1038GX FUSE GROUND +12V BATT BRIDGED BRIDGED to remote turn-on +12V electrical connections FUSE GROUND +12V BATT BRIDGED BRIDGED to remote turn-on +12V 12V battery head unit 12V battery head unit...

  • Page 14: Stereo Input Connections

    stereo input connections low level inputs using 2 CHANNEL MOSFET AMPLIFIER REMOTE BASS BOOST BASS BOOST FREQ. PROTECT POWER 2.5k +18db high level inputs using head unit from speaker terminals 2 ch amp PB-738GX • PB-1838GX LEVEL HI IN + - - + LOW IN FULL L/R Audio...

  • Page 15: Mono Input Connections

    low level inputs using REMOTE BASS BOOST To a second amplifier high level inputs using To a second amplifier wiring harness from speaker terminals mono input connections 2 ch amp PB-738GX • PB-1838GX 2 CHANNEL MOSFET AMPLIFIER BASS BOOST LEVEL HI IN FREQ.

  • Page 16: 2/4 Channel Input Connections

    2/4 channel input connections low level inputs 4 CH input connections using 4 CHANNEL POWER AMPLIFIER LOW IN CH 4 CH 3 HI IN CH4 CH3 L/R REAR Audio Outputs low level inputs 2 CH input connections using 4 CHANNEL POWER AMPLIFIER LOW IN CH 4 CH 3...

  • Page 17: High Level Input Connections

    high level input connections 4 CH floating ground connections 4 CHANNEL POWER AMPLIFIER LOW IN CH 4 CH 3 HI IN CH4 CH3 REAR ORANGE BLACK BLACK ORANGE from speaker terminals PLEASE NOTE! If using high level inputs, do not use the low level RCA inputs at the same time! LOW IN CH 2...
  • Page 18 CH4 CH3 HI IN +18db 2.5k CH 3 FULL REMOTE CHANNEL 3/4 BASS BOOST(CH3/4) PROTECT LOW IN 4 ch amp PB-638GX • PB-1038GX BASS BOOST FREQ. LEVEL CH 2 + - - + CH2 CH1 2.5k +18db HI IN FULL...
  • Page 19 BLACK ORANGE from speaker terminals PLEASE NOTE! If using high level inputs, do not use the low level RCA inputs at the same time! 4 ch amp PB-638GX • PB-1038GX BASS BOOST FREQ. LEVEL CH 2 + - - +...

  • Page 20: Mono Input Connections

    CH4 CH3 HI IN +18db 2.5k FULL CH 3 REMOTE CHANNEL 3/4 BASS BOOST(CH3/4) PROTECT LOW IN 4 ch amp PB-638GX • PB-1038GX BASS BOOST FREQ. LEVEL CH 2 + - - + CH2 CH1 2.5k +18db HI IN FULL...

  • Page 21: High Level Mono Input Connections

    BLACK ORANGE from speaker terminals PLEASE NOTE! If using high level inputs, do not use the low level RCA inputs at the same time! 4 ch amp PB-638GX • PB-1038GX BASS BOOST FREQ. LEVEL CH 2 + - - + CH2 CH1 2.5k...

  • Page 22: Speaker Connections

    speaker connections 2 ch amp • PB-738GX • PB-1838GX Stereo Output Mode FUSE GROUND BRIDGED L EFT speaker RIGHT speaker +12V BATT FUSE GROUND BRIDGED MINIMUM SPEAKER IMPEDANCE 4 OHMS! speaker +12V BATT...

  • Page 23: Speaker Connections

    4 ch amp PB-238GX • PB-638GX • PB-1038GX 4 CH Output Mode BRIDGED BRIDGED FRONT speakers Bridged Dual Mono Output Mode (PB-238GX WITHOUT) BRIDGED BRIDGED speakers FUSE GROUND +12V BATT REAR speakers FUSE GROUND +12V BATT IMPEDANCE MINIMUM...
  • Page 24 2 CH Bridged Output Mode with Subwoofer Output BRIDGED BRIDGED SUBWOOFER 4 ch amp PB-638GX • PB-1038GX FUSE GROUND +12V BATT MINIMUM SPEAKER IMPEDANCE 4 OHMS! SPEAKERS...

  • Page 25: Wiring Tips

    mounting Your new Pyramid Royal Blue Series amplifier comes complete with all required mounting hardware. When determining a suitable location in your vehicle for the amp, please remember that it is a high-power electronic device capable of generating high heat. For this reason, always choose a location in your vehicle which has low vibration, adequate ventilation, a minimum of dust, and no moisture.

  • Page 26: Protection Circuitry

    protection circuitry The built-in protection circuitry in the Pyramid amplifiers will disable the amplifier Royal Blue Series 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.

  • Page 27: Precautions

    precautions Do not operate the amplifier when it is unmounted. Attach all audio system components securely within the automobile to prevent damage, especially in an accident. Do not mount this amplifier so that the wire connections are unprotected, or in a pinched condition, or likely to be damaged by nearby objects.

This manual is also suitable for:

Pb-1838gxPb-238gxPb-638gxPb-738gxPb-103gx

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