Sélecteur d'impédance : J'ai un doute stupide, mais j'aimerais être sûr.

Citation : Si c'est écrit que 2 ohms passe avec ta sortie hp t'as pas à t'en faire en autan que tu reste entre 2 et 16 ohms de haut parleurs.

Hello,

First, the official answer:

No, you can only use the impedances that the output stage is expecting to see, which is either 2 or 4 Ω.  You must make sure to always have the switch in back of the amp, set to the appropriate impedance of your speaker system.  This is true for the majority of tube amps, as they need a matched load.

So, we do not recommend any other load other than the rated output loads of our amps.  In fact, if the unit is still under warranty, then ABSOLUTELY DO NOT USE ANY LOAD OTHER THAN WHAT IS LISTED IN THE OWNERS MANUAL, AS THIS WILL VOID THE WARRANTY!!!

Now for the “UN-official” opinion:

Some tube amps can handle a one step up or down in regards to impedances.  For example, a 4 Ω only output MAY be able to handle either an 8 or a 2 Ω load.

There are a few factors that play into this that you cannot control, like the design of the amp, but the tube quality plays a role as well.

NOS tubes seem to handle this much more than newer general quality (in other words, affordable) tubes, so it’s something to consider.

I know people who have run 8 Ω loads for years (on a 4 Ω tube output) without an issue, but I’ve also seen people blow the output stage from the same load.

It’s a risk, so it’s up to you.  I personally do not choose to play the ‘load differential’ game, as I am fully aware of the consequences.  Since a blown output stage is a very expensive fix, and would NOT be covered under warranty if due to an 8 Ω load, it’s a big decision.

I only give out this information as an effort to be realistic, not to recommend, so I repeat:

We do not recommend any other load other than the rated output loads of our amps.  In fact, if the unit is still under warranty, then ABSOLUTELY DO NOT USE ANY LOAD OTHER THAN WHAT IS LISTED IN THE OWNERS MANUAL, AS THIS WILL VOID THE WARRANTY!!!