How do I hook up three cabs?

[Busker]

I did a search, didn't see anything specific.

How do I hook up 3 cabs to a head with two speaker output jacks?

The cabs have one input each on the back.

I assume a special speaker cable is needed to daisy chain two of the cabs? I don't know, never done this before.

BTW, it's three 8 ohm cabs and a 2 ohm minimum head. According to that ohms calculator someone posted here (thanks!) with three 8 ohm cabs it should be about 2.66 ohms. But I guess you'd have to have the cabs hooked up correctly to get that, right? Help!

 

[billfitzmaurice]

Add another jack to one of the cabs.

 

[RWP]

Yeah, Bill's right. You 'could' make a special parallel cable but it would be problematic. If your cab has a input plate on the back with room to add a jack that would be the answer. Then wire that jack in parallel with the input.

 

[anderbass]

Or use one of these:
http://www.musiciansfriend.com/prod...4-Male-Mono-to-2-14-Female-Adapter?sku=339510

Here's some Series and Parallel info:
http://colomar.com/Shavano/spkr_wiring_sp.html

 

[RWP]

Or use one of these:
http://www.musiciansfriend.com/prod...4-Male-Mono-to-2-14-Female-Adapter?sku=339510

These are made for line level applications and may not be a good high power solution. However, 1/4 T&R power connectors aren't really all that great anyway. IMHO

 

[anderbass]

These are made for line level applications

True, But I've used these same adaptors with my (high-powered)
P/A speaker cabs/monitors for over a decade without issues.

 

[Busker]

Thanks all!

So, if I add a 1/4 in jack to one of the cabs, wired in parallel, problem solved, and that will bring the load down to 2.66 ohms?

Or will it be 4 ohms, as if you had two 8 ohm cabs hooked up?

 

[seanm]

Still counts as three cabs, so 2.66 ohms.

The two jacks on the back of the amp are just wired in parallel.

 

[Masher88]

What cabinets are you using? Most cabs have 2 inputs on them already wired in parallel

 

[Busker]

What cabinets are you using? Most cabs have 2 inputs on them already wired in parallel

GK Backline II

 

[anderbass]

Thanks all!

So, if I add a 1/4 in jack to one of the cabs, wired in parallel, problem solved, and that will bring the load down to 2.66 ohms?

Or will it be 4 ohms, as if you had two 8 ohm cabs hooked up?

If you connect two 8ohm cabs together in parallel, (with any method) you'd have a 4ohm load.
If you then add another 8ohm cab (that's also connected parallel) to these two, your tree cabs would end up with a total load of 2.66 ohms.