Can I run a 4x12 & 2x12 cab at the same time on the Herbert?

[renob99]

If not, then I won't do it.
But, if I can which speaker connections do I use on the back of the Herbert for each cab?
Do I plug the 4x12 into the 8ohm and then the 2x12 into the other 8ohm??? How does that all work?

Thanks for any info guys!

 

[MARK2C]

I do. I run two 8 Ohm cabs into the two 4 Ohm speaker jacks.

 

[petereanima]

If both cabs are 8 ohm, you need to plug them to the 4 ohm outputs! If both cabs are 16 ohm each, than you must plug them to the 8 ohm outputs!

You can see this is also noted on each output, between the 4 ohm outputs, you will see "2x 8 ohm" resp. between the 8 ohm outputs you can read "2x 16 ohm".

EDIT: see HERE.

 

[slyvren]

What they said. Make sure both cabs are the same ohms (8 or 16) you can't do this with 4ohm cabs. How's your amp?

 

[renob99]

Finally got to play the amp with the band last week. I love it!!

 

[renob99]

Thanks for the replies guys. But I want make sure I'm clear. It doesn't matter if one cab is a 2x12 and the other is a 4x12 as long as they are using the same ohm's?

 

[slyvren]

Thanks for the replies guys. But I want make sure I'm clear. It doesn't matter if one cab is a 2x12 and the other is a 4x12 as long as they are using the same ohm's?

Correct. Both either 8 or 16 ohm. The. Follow directions on Herbie's rear panel. 2x16 ohms goes into 8 ohm, 2x8ohm goes into 4ohm. 2x4 ohm means out of luck.

 

[Ventura]

Thanks for the replies guys. But I want make sure I'm clear. It doesn't matter if one cab is a 2x12 and the other is a 4x12 as long as they are using the same ohm's?

Correct. Both either 8 or 16 ohm. The. Follow directions on Herbie's rear panel. 2x16 ohms goes into 8 ohm, 2x8ohm goes into 4ohm. 2x4 ohm means out of luck.

More important than the configuration of the speakers in the cab (as you could power 1x12 and a 4x12 simultaneously, and any combination in between) is the rating/load of them. Thus far I'm seeing that everyone assumes both your cabs are either 16ohm or 8ohm each - what about a 4ohm and an 8ohm - hooped, no can do. So make sure that the load of these cabs is the same rating before splitting them down the middle (ie 8ohm x 2 = 4ohm each)

V.

 

[slyvren]

Thus far I'm seeing that everyone assumes both your cabs are either 16ohm or 8ohm each - what about a 4ohm and an 8ohm - hopped, no can do.

I'm pretty sure we were pretty clear about that earlier.

So make sure that the load of these amps is the same rating before splitting them down the middle (ie 8ohm x 2 = 4ohm each)

V.

Incorrect or unclear. 8 ohm x2 = a singular 4 ohm load wired in parallel. Not 4 ohms each.

 

[Ventura]

Edit: Apologies, I meant make sure the cabs (CABS!!! not amps...my bad) are rated the same - as what I was getting at is, it'd be a different situation if your 4x12 was rated at 16ohm and your 2x12 was rated at 8ohm. Thus far - and I do believe I re-read the thread, I didn't get clarification on whether or not BOTH the cabs in question were the same rating (ie: 8ohm, 16ohm, etc.)

Knackered man, punched - been a long day, was just trying help.

V.

 

[slaktarn]

Just be aware that the power distribution between the speakers will not be symmetric.

Assuming that the 2*12 cab and the 4*12 cab has the same impedance:
The 2*12 will get 50% of the amps power and the 4*12 will get 50% of the amps power as well.
That means the speakers in the 2*12 will get 25% each and the speakers in the 4*12 will get 12.5% each.

If you crank your Herbert the speakers in the 2*12 will get 25% of 180W which is 45W. Just make sure your speakers can handle this. Most will (V30:s are rated at 60W) but if they are greenbacks (20W or 25W rating) they can be fryed.