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Running incorrect Ohms question

Posted: Thu Dec 20, 2018 6:59 pm
by TinMI
So I understand that running a 16 ohm head into an 8 ohm cab is a bad idea. But what about running a 16 ohm head on the 8 ohm option into a 16 ohm cab?

Re: Running incorrect Ohms question

Posted: Thu Dec 20, 2018 9:33 pm
by Ronnie Robinson
With a valve amp it's important to run the correct ohm out matched to the speaker, or risk causing the amp serious damage.


But based on your question, why not just use the 16ohm out on your amp to a 16 ohm speaker? If you have this already..........

Re: Running incorrect Ohms question

Posted: Fri Dec 21, 2018 1:33 am
by TinMI
Ronnie Robinson wrote:
Thu Dec 20, 2018 9:33 pm
But based on your question, why not just use the 16ohm out on your amp to a 16 ohm speaker? If you have this already..........
It was more just a theoretical question. I noticed the inputs and thought, would that harm it? I couldn't find any results on any forums that asked that question. Thanks for your help. 16 ohms all the way!

Re: Running incorrect Ohms question

Posted: Fri Dec 21, 2018 2:54 am
by bclaire
Depending on how you mismatch the impedance you could blow up your output transformer. Big money.

Re: Running incorrect Ohms question

Posted: Fri Dec 21, 2018 5:36 am
by Sooner
Here's a good discussion of mismatching impedance by one of the forum experts:

viewtopic.php?f=3&t=3346&p=26458&hilit= ... tch#p26458

Re: Running incorrect Ohms question

Posted: Wed Dec 26, 2018 2:11 am
by Andy H.
Sooner wrote:
Fri Dec 21, 2018 5:36 am
Here's a good discussion of mismatching impedance by one of the forum experts:

viewtopic.php?f=3&t=3346&p=26458&hilit= ... tch#p26458
Wow, old post! Still, the way valve amps work hasn't changed so much in the meantime... :lol:

Andy.