Impedance Mismatch Question

[NoOnesFang13]

I have an Egnater Tweaker 40 1x12 that has a Celestion gh-50 (50w version of the g12h30 from what I've read) that runs at 16 ohms. I also have a Seymour Duncan 84-40 that I have a Weber Grey Wolf at 8 ohms. I was playing with the idea of running them together with the 84-40 as an extension, but there is the difference in impedance.

Is there any safe way for me to run both speakers off of the amp, or do I just have to choose between the two?

 

[JMP/HBE]

Re: Impedance Mismatch Question

No ...

 

[PFDarkside]

Re: Impedance Mismatch Question

It depends on the design of the power amp and the robustness of the output transformer. Email Egnater, I’m sure you’ll get an answer.

 

[IM4Tone]

Re: Impedance Mismatch Question

PFDarkside gave the best answer. I would say that running the two together in parallel will yield 5.333 ohms. So, If you place the impedance switch of the Egnater at 4 ohms or even 8 ohms (In a tube amp the slightly lower impedance is less risk), there should be no harmful effect. HOWEVER, understand that 2/3 of the power will go to the 8 ohm speaker and 1/3 to the 16 ohms. There will likely be noticeable volume difference depending on the efficiency of each. You may or may not like that, but won't hurt anything.

 

[JMP/HBE]

Re: Impedance Mismatch Question

Egnaters aren't known for "great" transformers.
You run the risk of smoking your amp.

 

[JamesPaul]

Re: Impedance Mismatch Question

My thoughts on impedance mismatching can be found in reply #14 here:

https://forum.seymourduncan.com/showthread.php?330426-Marshall-1936-JCM900-212-16-8-ohm-Sounds-Better-When&p=4249229&viewfull=1#post4249229