rewireing a cab from mono to stereo

[billmcdonald]

Would it be possible to mod a mono cab so I can run it stereo (two heads). If so can anyone explain the process? I know how to solder and I can follow instructions. Thanks.

 

[Outlaws]

Get another input jack and wire the tip to the positive and the ring to ground. Then figure if you are using two SEPERATE heads, to look at the speaker ohms and use that since whatever you are using now will be different since they are currently wired in either series or parallel.

Check out tubesandmore.com for any 1/4" mono jacks and even a Marshall or Fender style plastic piece to house it with. Switchcraft is a good jack.

 

[ocnor]

This might be helpful.http://www.installdr.com/TechDocs/999016.pdf

 

[WERNER 1]

First order of business would be to find out if the current mono cab has more than one speaker.

 

[billmcdonald]

First order of business would be to find out if the current mono cab has more than one speaker.

Its a 4x12, 16 ohms.


So I guess once I rewired it I would run both heads at 8 ohms?


Thanks guys.

 

[billmcdonald]

Im trying to get pictures of the inside of the cab for you guys.

Its a 5150 cab, so it has an xlr output. I dont know if that would have anything to do with anything but Im just saying.


Also, Id like to be able to run sereo OR mono, so like, if both input jacks arent being used, it would automaticly go back to mono, does that make sense? Or at least have a switch.

 

[WERNER 1]

Yeah, basically you need to know the the impeadance or ohm rating of each speaker inside the cab is.

Usually the "Standard" if you will for a 4x12 mono/stereo jack plate set up is: 4 & 16 ohms in Mono, and 8 ohms in Stereo (8 ohms per input jack)

So if you just get one of these jack plates like from Marshall or Carvin, it would make this job real easy and professional looking.......not to mention giving you a couple of more hook up options.

Here a link to the one from Carvin: http://www.carvin.com/products/single.php?ItemNumber=CGC412&CID=GSPK

It looks like they changed it a bit, but it would still work..

The Marshall one is model#S-H800 and list for 19.99

http://www.tubesandmore.com/new/scr...elevclients/cemirror/ELEVATOR.FXP?item=S-H800

And here's some usefull info on guitar cab wiring: C:\Documents and Settings\Bryan Cantu\My Documents\Music Gear\Guitars and amps\4X12 Wiring instructions.htm

Rick

 

[billmcdonald]

Yeah, basically you need to know the the impeadance or ohm rating of each speaker inside the cab is.

Usually the "Standard" if you will for a 4x12 mono/stereo jack plate set up is: 4 & 16 ohms in Mono, and 8 ohms in Stereo (8 ohms per input jack)

So if you just get one of these jack plates like from Marshall or Carvin, it would make this job real easy and professional looking.......not to mention giving you a couple of more hook up options.

Here a link to the one from Carvin: http://www.carvin.com/products/single.php?ItemNumber=CGC412&CID=GSPK

It looks like they changed it a bit, but it would still work..

The Marshall one is model#S-H800 and list for 19.99

http://www.tubesandmore.com/new/scr...elevclients/cemirror/ELEVATOR.FXP?item=S-H800

And here's some usefull info on guitar cab wiring: C:\Documents and Settings\Bryan Cantu\My Documents\Music Gear\Guitars and amps\4X12 Wiring instructions.htm

Rick

Each speaker is 16 ohms on this cab.

I cant view files off your computer, so youll either need to host it or copy and paste it (if its just text) or you can send if to me on aim if you have it.

Thanks alot for your help.

Im still not completely sure about which wires would go where, but maybe once I get some pictures you guys can help me with that?

 

[ggunn]

Each speaker is 16 ohms on this cab.

I cant view files off your computer, so youll either need to host it or copy and paste it (if its just text) or you can send if to me on aim if you have it.

Thanks alot for your help.

Im still not completely sure about which wires would go where, but maybe once I get some pictures you guys can help me with that?

What you now have is two series pairs in parallel. You can wire it up as two parallel 8 ohm pairs, which is really simple. Mount two jacks, and wire the tip connector of each jack to the positive terminals of two speakers and the sleeve connector of each jack to the negative terminals of the same two speakers. Piece of cake.

 

[WERNER 1]

Uh..sorry about that...

Here's some good info: http://www.colomar.com/Shavano/4speaker.html