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[MarshallJMP]

Best is to isolate the grounds from each other.

[Kim]

I went back and updated the drawing and info after ordering the new jacks and installing one in my new speaker cab.  Thanks to MJMP    for the brilliant recommendation to use the Cliff jack   instead of the more expensive (and more inferior in this particular case) Switchcraft.     

[Dante]

Here's a way to use Two cabs in parallel - just click on "watch on youtube" to view the video, it's not allowed on any other sites, I guess 

Note: This will drop your impedence to half of each cab (two 16 ohm cabs = 8 ohm load parallel)

[MarshallJMP]

You can also add 2 jacks (one is different) like used in the ADA split cabs so you can run them in parallel or series.

[Harley Hexxe]

That's a 13 year old video.
These days, everyone is downsizing their rigs, or going completely amp-less in a lot of venues, so realistically, this would only be useful for getting your impedance to match up with your power amp.
Fortunately, I own a bunch of split-stack cabs, so I can use them in series or parallel as needed. Even so, there's no place around here I can use those unless I invest in a couple of 20-watt rack mounted power amps, then maybe that might be an acceptable power level in the few places that still have live bands around here.

That's why I've been experimenting with building pedal boards that can be used with, or without amplifiers. I'm trying to see if I can re-create that magic tone and feel going direct into my DAW. So far, my efforts have been less than inspiring. I'll continue this topic in a more appropriate thread.

Harley

[Dante]

That's a 13 year old video.
These days, everyone is downsizing their rigs, or going completely amp-less in a lot of venues, so realistically, this would only be useful for getting your impedance to match up with your power amp.

Did they change how to wire up a cab since then?

I could never find a pedalboard that sounded good in the mix in a live situation. I run my heads direct into the mixer, but I have to have a stage volume setup too. Just in case the IEMs are on the blink or whatever....Always have an amp & speakers

[Harley Hexxe]

It's not that they changed the wiring since then, more like club owners bitch like little girls about how loud your rig is.

Some won't let you bring an amp to your gig. They want it all in the PA. They just don't have to deal with a drummer on an acoustic kit. That's our problem.

[Dante]

Wow, I'm glad to say that has not happened here (yet)

Lots of guys bring a lil 10" champ with them, probably 5w, with a mic in front of it. I cannot hear that with the guys that play drums behind me....both of them are heavy hitters, need some air moving

I played without amps for a few gigs, but it's just wrong to approach a stage and hear only drums once you get behind the mains. That was the impression I got when I pulled my IEMs out for soundcheck

[Harley Hexxe]

I know what you mean.

I don't use IEMs, and I really like to have the balance of drums, bass, and guitar, and keys if available onstage. Not through the house mix monitors either. Most of the time the guitar is buried so I can't tell what I sound like.

I need to move.

Oh, the 5 watt Champ only has an 8" speaker. If it has a 10" speaker I think it's a 20 Watt amp. Still, a Champ isn't enough to get in a band mix usually unless it's mic'ed.

P.S. You wanted to see my new axe, it's posted.

[Dante]

I know one guy who told me his was 5w, he must've had the 8"

There's another guy, travels with a top 40 band that has no permanent members, all hired guns. He uses one too, with a BIG pedal board, which looks kinda hilarious

IEMs: I love them for singing, hate them for playing. Sometimes, I pull one out and leave the one in that is closest to the drums

[Dante]

SO.....I just picked up a 2x12 cab for pretty cheap. I wanna wire it up for mono and stereo, and I have a question that I think I already know the answer to....see the diagram below, two options for a mono 8 ohm cab; 16 ohm and 4 ohm. Also options for dual 8 ohm load in stereo.

But, what happens if I wire the cab BOTH ways and plug into the mono jack? What happens if I plug into the stereo jacks? I think I'm asking for trouble because of the way it's wired to do both, you're not going to get that 16ohm load in the mono jack like you're thinking....is that correct?

btw: I can easily just leave it as a stereo cab with two jacks, I have a cab merger that will allow me to run it mono

[Harley Hexxe]

It looks to me like you'll get the 16 ohm mono load. IF you are using all TS jacks, the ones that aren't plugged in should be shunted.

If you get any sound at all that is. Just be sure you know where your impedance is set on your amp before you plug in!

[Dante]

Harley,
That's what I was thinking, except for the shunting part.

I figured the simplest way was just to wire each speaker to a jack, boom - stereo cab. I have two jacks in the cab with the wires soldered to the jacks, tied up inside to do that if I want.
 
Right now it's a mono 16 ohm cab, which is perfect for my lunchbox heads. I still have my two 1x12 cabs for running stereo.

[Kim]

Dante, didn't I already had you covered back earlier in this thread?   

Here's another one I recently used to reconfigure one of my cabs.   This original post has been edited to use the Cliff jacks MJMP mentioned below.
 


This uses a switching jack to make the 2x12 Stereo or Mono depending on whether both jacks are uses or just one.  Here, the other non-switching jack is the Primary jack.  Plugging into the Primary jack alone gives a Mono 2x12 at 8 ohms (each speaker is 16 ohms itself).  Adding another plug to the Switch jack splits the 2x12 into Stereo at 16 ohms per side.  Note that plugging into just the non-switching jack alone will result in just one active speaker at 16 ohms.   

Be sure to clearly label the jacks as to which one is the Primary and be sure to match the impedances to your amp in regards to which jack(s) you will be using.

[Dante]

I saw that diagram Kim, but I don't understand it....forgive me