Can you plug a Roland Cube 20x into a 4x12 cabinet?

[guambomb832]

Hey guys I was just wondering if I am able to plug in a Roland Cube 20x into a 4x12 cabinet or not. Thanks

[DonP]

Sure.

You'll need to do some wiring / soldering and make sure the impedance of the cab is the same or greater than the cube. If it's less, you'll get and increase in power until it blows up.

[guambomb832]

Could you elaborate a little more please? I'm a newb when it comes to amps.

[DonP]

Ok. I saw this once before.

You disconnect the internal speaker wires from the amp, keeping an eye on polarity. The only reason to worry about polarity is so that the speaker is moving in the same direction as your strings. Get it backwards and it will just sound less than optimum; it won't blow anything up.

Drill a hole in the front of the cab where the speaker is and mount an output jack. Connect the wires from the speaker to this jack.

Create a another set of wires + input jack. Connect this to the speaker.

Drill another hole in the cab and thread this through.

When you plug the speaker jack into the amp output, the Cube should work like before.

Unplug the speaker, then plug a 4x12 into the Cube amp output. Now you are playing through the 4x12.

Because the Cube is a transitor amp, it won't hurt it to have no speaker connected. But what will hurt it is too small of a load. Look at the Cube speaker. It should have the ohms on it (4, 8, 16). the 4x12 cab should match this, or be higher. But don't go lower or you will fry the Cube.

i.e. if the Cube speaker is 8 ohms, you can use and external 8 or 16 ohm speaker, but not a 4 ohm speaker.