help me with a little bit of confusion.

[s_mcsleazy]

so i brought a set of cabs a few days ago and the owner said there 8ohms each. however there are 2 jacks on the back of each one with no real indication so my question is this. are both speaker cabs actually ok to be at 8 ohms with only plugging into one jack

sorry if its been asked befor

[Munjibunga]

Yes. The other jack is so you can "daisy chain" another cab to it. So you'd run a cable from your amp to either jack on one cabinet, then run another cable from the first cab to the next one. Never, ever run two cables from your amp into both jacks on the same cabinet. If you're going to run both 8-ohm cabs, make sure your amp is capable of running at a 4-ohm load.

By the way, daisy-chaining cabs is identical to running one cab off of each output of the amp, assuming your amp has two outputs.

[s_mcsleazy]

Originally Posted by Munjibunga

Yes. The other jack is so you can "daisy chain" another cab to it. So you'd run a cable from your amp to either jack on one cabinet, then run another cable from the first cab to the next one. Never, ever run two cables from your amp into both jacks on the same cabinet. If you're going to run both 8-ohm cabs, make sure your amp is capable of running at a 4-ohm load.

By the way, daisy-chaining cabs is identical to running one cab off of each output of the amp, assuming your amp has two outputs.

thanks munjiman. one of my amps does have 2 but the other only has one and i know its a 4-ohm head so i knew most of it i just thought id check to see

[Sneakypete]

Munjibunga - no actual need to run two cables from the amp to the same cab but what harm could it do? An 8 ohm cab would still present an eight ohm load to the head regardless of how many cables were used, I think.

[One Drop]

Originally Posted by Sneakypete

Munjibunga - no actual need to run two cables from the amp to the same cab but what harm could it do? An 8 ohm cab would still present an eight ohm load to the head regardless of how many cables were used, I think.

Don't do it! It's a bad thing.

[s_mcsleazy]

now your just confusing me.

[WhoDidTheElf]

I think there was a misunderstanding there...

I believe Munji was getting at running two leads off your head's output into both jacks on one cab, i.e, into the input and the output of the cab. This would be bad.

Running a cable from each output on your head to each input on both your cabs is fine and is the same as running your cabs in daisy chain.

[Eric Moesle]

Running two separate cables out of your amp into a single cab is the exact same thing as taking a cable out from your amp and plugging it into the other output of your amp. You will fry your amp instantly. Don't ever try it.

[klocwerk]

Originally Posted by Sneakypete

Munjibunga - no actual need to run two cables from the amp to the same cab but what harm could it do? An 8 ohm cab would still present an eight ohm load to the head regardless of how many cables were used, I think.

Quite a bit of harm actually.
DON'T DO THIS.

[Bridge Cables]

Originally Posted by Sneakypete

Munjibunga - no actual need to run two cables from the amp to the same cab but what harm could it do? An 8 ohm cab would still present an eight ohm load to the head regardless of how many cables were used, I think.

Wouldn’t recommend it. You would definitely be into fried foods, i.e., eating the amp after it fries.

OP, just follow Munji’s instructions, much better diet.

BC

[1n3]

Originally Posted by Eric Moesle

Running two separate cables out of your amp into a single cab is the exact same thing as taking a cable out from your amp and plugging it into the other output of your amp.

True. But unless the amp is stereo, the outputs are wired in parallel, so this would only duplicate the wiring on the inside.

You will fry your amp instantly.

Only if you reverse the connections (tip/sleeve), which would present a dead short to the output.

Not recommending that anyone do this, mind you...

[s_mcsleazy]

ill just do as munji said

now shup befor i get even more confused

[Munjibunga]

Originally Posted by Sneakypete

Munjibunga - no actual need to run two cables from the amp to the same cab but what harm could it do? An 8 ohm cab would still present an eight ohm load to the head regardless of how many cables were used, I think.

Aside from shorting the output (zero ohm load) and blowing up the amp, not much.

[Munjibunga]

Originally Posted by s_mcsleazy

ill just do as munji said

now shup befor i get even more confused

Your wisdom is unsurpassed. You are now under my protection.

[Munjibunga]

Originally Posted by caaraa

Running a cable from each output on your head to each input on both your cabs is fine and is the same as running your cabs in daisy chain.
Reply With Quote

That isn't what Sneakypete said. What you said is true.

[1n3]

Originally Posted by Munjibunga

Aside from shorting the output (zero ohm load) and blowing up the amp, not much.

It wouldn't be a short. It would be redundant wiring between the same source and load - a silly thing to do, but not harmful.

[Sneakypete]

Two distinct viewpoints on this one then. If it can be taken that the head output sockets were paralleld in the factory and so were the speaker sockets in the cab factory - then the only way two cables between those paralleled jacks can cause a short is if one of them (not both!) is incorrectly wired. Personally I don't use wrongly wired cables but perhaps the best advice to the OP is don't do it in case your cables are crap. Fair enough?

[Electricblue]

The 2 +'s of your amp will be connected together, as well as the -'s. Unless you reversed the polarity of the cable, you're fine.

This does NOT dead-short your amp.

[Jack]

Originally Posted by Electricblue

The 2 +'s of your amp will be connected together, as well as the -'s. Unless you reversed the polarity of the cable, you're fine.

This does NOT dead-short your amp.

This man speaks the truth.

For the exact same reason that it doesn't matter whether you go amp>cab>cab or amp both cabs, it doesn't matter if you connect two cables from one amp to one cab. All of your positives and all of your negatives match up either way. The result would be as if one, doubly-thick cable was run from the amp to the cab. Connect the amp via one of it's two outputs to one of the cab's two inputs. Now pull the cable out and use the 'other' in and out on both the amp and cab. Notice a difference? Nope? That's cos they're the same. All wired in parallel.

[s_mcsleazy]

ok can i just say this now

IM NOT GOING TO CONNECT BOTH OUTPUTS OF MY BASSMAN INTO ONE CAB. i was just wondering what the other jack did. my question has been awnsered so please stop trying to confuse me