Peavey Forum AX 5 string wiring diagram

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PKavicky
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Joined: Mon May 18, 2020 2:58 pm

Peavey Forum AX 5 string wiring diagram

Post by PKavicky » Mon May 18, 2020 3:09 pm

Hello

I am helping a friend who recently received a Peavey Forum 5 AX bass. Many of it's internal wires are disconnected. I'm hoping to get it soldered back up again so he can give it to his daughter. I require the wiring diagram for a Peavey AX 5 string bass to do so. With that info this should only take minutes. I haven't been able to get this from Peavey or otherwise find this info. (I have the info for the original Forum bass, but it's pretty different)

This later version of the Forum AX with 5 strings has the following attributes -
5 strings
2 active VFL pickups
Uses 2 9V batteries
3 controls - volume, blend, and a concentric tone contol for treble and bass

Seems like this should be fairly simple. The tone controls are wired in and might be correct. I'm not sure how to wire the rest especially as there is a multi colored ribbon cable inside of the bass that's a bit of a mystery.

Any help finding the wiring info for this would be most appreciated. Share a pic, direct me to a place with the wiring diagram, anything please.

kodiakblair
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Re: Peavey Forum AX 5 string wiring diagram

Post by kodiakblair » Wed May 20, 2020 4:34 pm

Poor lighting for photographs.

I'll get on this tomorrow :)
Axcelerator,B-90,B-Quad,Cirrus,Dyna,Dyna/Unity,Foundations,Forum,Fury,Gbass,Grind,International,midibase,Milestone III, Millenniums,Patriot,Resolite,RJ-IV,Sarzo,3 T40,T45,T20,TL-5,Tragic,Unity,Void,Zephyr5,3 Zodiac.

kodiakblair
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Re: Peavey Forum AX 5 string wiring diagram

Post by kodiakblair » Fri May 22, 2020 12:41 pm

@PKavicky

Sorry it took longer than I hoped.

Numbering system I've used is.

Pots. Bottom side up, Lugs away from you. Lugs 1 to 3, working left to right.

Ribbon cable. Red/Gray, then single grays are number 1 to 12 working left to right.

Image
Axcelerator,B-90,B-Quad,Cirrus,Dyna,Dyna/Unity,Foundations,Forum,Fury,Gbass,Grind,International,midibase,Milestone III, Millenniums,Patriot,Resolite,RJ-IV,Sarzo,3 T40,T45,T20,TL-5,Tragic,Unity,Void,Zephyr5,3 Zodiac.

kodiakblair
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Posts: 269
Joined: Wed May 28, 2014 6:05 pm
Location: Scotland

Re: Peavey Forum AX 5 string wiring diagram

Post by kodiakblair » Fri May 22, 2020 12:47 pm

The reds from the pickups all join here.

Image


Pickup blacks go to Blend pot. The black sleeve has a white (hot) and bare ground. Whites go to lug 2, probably easier to do top tier for neck pickup/bottom tier bridge pickup. The bare grounds go back of pot.

Image
Axcelerator,B-90,B-Quad,Cirrus,Dyna,Dyna/Unity,Foundations,Forum,Fury,Gbass,Grind,International,midibase,Milestone III, Millenniums,Patriot,Resolite,RJ-IV,Sarzo,3 T40,T45,T20,TL-5,Tragic,Unity,Void,Zephyr5,3 Zodiac.

kodiakblair
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Posts: 269
Joined: Wed May 28, 2014 6:05 pm
Location: Scotland

Re: Peavey Forum AX 5 string wiring diagram

Post by kodiakblair » Fri May 22, 2020 12:51 pm

The battery Red is circled in white.

Image

Battery black is also circled in white. The Red circled in blue runs to the output socket.

Image
Axcelerator,B-90,B-Quad,Cirrus,Dyna,Dyna/Unity,Foundations,Forum,Fury,Gbass,Grind,International,midibase,Milestone III, Millenniums,Patriot,Resolite,RJ-IV,Sarzo,3 T40,T45,T20,TL-5,Tragic,Unity,Void,Zephyr5,3 Zodiac.

kodiakblair
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Posts: 269
Joined: Wed May 28, 2014 6:05 pm
Location: Scotland

Re: Peavey Forum AX 5 string wiring diagram

Post by kodiakblair » Fri May 22, 2020 1:33 pm

Bridge ground goes to back of Tone pot.

I'll now work through the ribbon cable. Remember I'm working L to R

Red/Grey. It joins the black from the output socket.

Grey 1. It joins the white from the output socket.

To the pots next

Grey 2. Top Tier Blend pot. Lug 1.

Grey 3. Grounds on back of Tone pot.

Grey 4. Grounds on back of Blend pot.

Grey 5. Grounds on back of Volume pot.

Grey 6. Tone bottom tier Lug 3.

Grey 7. Tone bottom tier Lug 2.

Grey 8 Tone top tier Lug 3.

Grey 9. Volume pot 2.

Grey 10. Tone top tier Lug 2.

Grey 11. Tone bottom tier Lug 1.

Grey 12. Volume Lug 3.

Grey 13. Tone top tier Lug 1.
Axcelerator,B-90,B-Quad,Cirrus,Dyna,Dyna/Unity,Foundations,Forum,Fury,Gbass,Grind,International,midibase,Milestone III, Millenniums,Patriot,Resolite,RJ-IV,Sarzo,3 T40,T45,T20,TL-5,Tragic,Unity,Void,Zephyr5,3 Zodiac.

PKavicky
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Re: Peavey Forum AX 5 string wiring diagram

Post by PKavicky » Wed May 27, 2020 9:18 pm

I can't thank you enough for this. Heading to the soldering iron now to see if I can make a bass happy again.

kodiakblair
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Posts: 269
Joined: Wed May 28, 2014 6:05 pm
Location: Scotland

Re: Peavey Forum AX 5 string wiring diagram

Post by kodiakblair » Thu May 28, 2020 4:15 pm

You're welcome.

Glad I could be of some assistance :)
Axcelerator,B-90,B-Quad,Cirrus,Dyna,Dyna/Unity,Foundations,Forum,Fury,Gbass,Grind,International,midibase,Milestone III, Millenniums,Patriot,Resolite,RJ-IV,Sarzo,3 T40,T45,T20,TL-5,Tragic,Unity,Void,Zephyr5,3 Zodiac.

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