Impédance 16ohm/8ohm

Bonjour,
Je voudrais savoir si c'est possible de mettre en sortie de mon ampli un haut-parleur de 8 ohm, sachant que mon ampli a un unique réglage de 16 ohm en sortie ? Est ce que je risque d'abîmer mon ampli ?
Merci d'avance

L'impédance d'un HP peut être supérieure à l'impédance de sortie d'un ampli, JAMAIS inférieure, surtout sur un ampli à lampes, et encore moins question de faire fonctionner ce type d'ampli sans charge (= HP déconnectés).

Q6: I want to see if my amp powers up, but I don't have a speaker cabinet. Can I just turn on the amp and see if the tubes light up?

A: You can do this, but only very briefly, a few seconds at most. According to Mark Huss, " As long as nothing is plugged into the output jacks, you should be fine. Most tube amps automatically short the output jacks if nothing is plugged in. It's much worse (and potentially fatal for the OT) if you have a speaker cable plugged into the head but not the speaker. Unlike solid state amps, tube amps are much happier with their output shorted then open-circuited."

So, always, always, ALWAYS turn on a tube amp ONLY when there is a speaker cable connected between the amp and a cabinet! Nothing will trash an output transformer like NOT doing this. Be nice to your Partridges and they'll be nice to you.