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Wiring schematic for pyramid pb70

Does anybody know the wiring diagram for the pyramid pb70 in line booster

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3 Suggested Answers

  • 1 Answer

SOURCE: wiring a pyramid 903G

red - power
Black - Ground
Blue/Black - rear Left Speaker Positive
Blue - Rear Left Speaker Neg
White/ Black - Front Left Speaker Positive
White - Front Left Speaker Neg
Brown/Black - Rear Right Speaker Positive
Brown - Rear Right Speaker Neg
Yellow/Black - Front Right Speaker Positive
Yellow - Front Right Speaker neg
Green - Left Input Positive
Green/White Left input Neg
Gray Right Input Positive
Gray/White - Right input Neg

Posted on Jan 02, 2009

casinochip_k
  • 1 Answer

SOURCE: I have a Pyramid 403G, no wiring diagram

I have the manual for the Pyramid 403G 7 band Graphic Equalizer. The wires
the wires are marked exactly the opposite of what all know as standard. According to the manual the wires marked with the black are positive, it threw me since I have been wiring for the last 25 years. If you make the mistake of wiring it like you wire everything else it will not have any power and act odd, I made that mistake.

To your radio:

Green/white left negative

Green left positive


To your radio:

Gray/white right negative

Gray right positive


Red with fuse to ignition power

Black Ground


Left Rear speakers:

Blue rear left negative

Blue/black left positive


Left Front speakers:

White/black left front positive

White left front negative


Right Rear speakers:

Brown/black right rear positive

Brown right rear negative


Right Front speaker:

Yellow/black right front positive

Yellow right front

Posted on Apr 12, 2012

danielnajer
  • 4 Answers

SOURCE: I need a wiring diagram

Click on MANUAL DOWNLOAD

LOOK PAGE 4 INTO THE PDF FILE!!!!

http://www.pyramidcaraudio.com/sku/903G/10-Band-Half-Din-Power-Booster-Graphic-Equalizer-Amplifier-200-Watts#

Posted on Aug 08, 2012

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I need a wire diagram for equalizer 903g


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LOOK PAGE 4 INTO THE PDF FILE!!!!

http://www.pyramidcaraudio.com/sku/903G/10-Band-Half-Din-Power-Booster-Graphic-Equalizer-Amplifier-200-Watts#

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2 Answers

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Hi.
It very unlikely the voltage went down. I think you should re measure what the voltage should be yes it 13 volt is after the bridge you wil get this with dual 6.5 volt ac from the transformer, they don't change voltage unless you have a short at the output, and if you did you will blow the transformer, is your reading from 2 wires or is it three wires, output, the center to the end should be 6.5 and end to end maybe 13.8.
I would need to see the schematic to know what voltage you should be getting.
I wouldn't look on a bat transformer but ether, bad bridge or wireing.

I hope this help's

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4 Answers

Wiring a pyramid 903G


red - power
Black - Ground
Blue/Black - rear Left Speaker Positive
Blue - Rear Left Speaker Neg
White/ Black - Front Left Speaker Positive
White - Front Left Speaker Neg
Brown/Black - Rear Right Speaker Positive
Brown - Rear Right Speaker Neg
Yellow/Black - Front Right Speaker Positive
Yellow - Front Right Speaker neg
Green - Left Input Positive
Green/White Left input Neg
Gray Right Input Positive
Gray/White - Right input Neg

Nov 16, 2007 | Pyramid 903G 10-Band Car Equalizer

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