3 x 4x12's cab with 8 and 16 ohms ?????

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louis
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3 x 4x12's cab with 8 and 16 ohms ?????

Post by louis » Sun Jun 30, 2013 11:29 am

Hi guy's !!


I have a question ,

I have two 16ohms 4x12 cabs and one can feed the other via an output .
The other one is an 8ohms 4x12 cab .

If I put two 16ohms cabs linked together on one side and one 4x12 8ohms cab on the other side,

Would that mean that I have two sides equaling 8ohms and could put the ohm selector on 4ohms ??


Can I damage something doing this ?

The 16ohm cabs are Pre Rolas G12M 75's and the 8ohm cab is loaded with Pre Rolas G12H 75's
Head is an accurate 12000 serie Plexi with original 1968 Dagnall Output


Thank's !........better do it right than sorry!


Louis

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demonufo
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Re: 3 x 4x12's cab with 8 and 16 ohms ?????

Post by demonufo » Sun Jun 30, 2013 12:53 pm

Assuming the linked jacks are wired in parallel, yes you can.

However, the 8ohm cab will be considerably louder than the other two, for two reasons.
The speakers are more efficient and slightly louder anyway, and the load presented to the amp will match that of the other two put together. So the 8ohm cab might even be very slightly louder than the other two put together. Will certainly be a lot louder than either of the other two when placed side by side, when connected in this way.

The 8Ω cab will be seeing half of the load. The other two cabs will be seeing a quarter each.
So I like purple, okay!!!!!!

83.7% of all statistics are made up on the spot!

louis
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Re: 3 x 4x12's cab with 8 and 16 ohms ?????

Post by louis » Sun Jun 30, 2013 2:02 pm

demonufo wrote:Assuming the linked jacks are wired in parallel, yes you can.

However, the 8ohm cab will be considerably louder than the other two, for two reasons.
The speakers are more efficient and slightly louder anyway, and the load presented to the amp will match that of the other two put together. So the 8ohm cab might even be very slightly louder than the other two put together. Will certainly be a lot louder than either of the other two when placed side by side, when connected in this way.

The 8Ω cab will be seeing half of the load. The other two cabs will be seeing a quarter each.

Thank,s!.............is 4ohm ok on the selector ?


Louis

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demonufo
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Re: 3 x 4x12's cab with 8 and 16 ohms ?????

Post by demonufo » Sun Jun 30, 2013 3:04 pm

Yep. Spot on perfect.
So I like purple, okay!!!!!!

83.7% of all statistics are made up on the spot!

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