DIY Valve Guitar Amp Head

[DrNomis_44]

What is more important - the 8 ohm or the 100 W?

If you have two 18 ohms/50 W in parallel with an 82 ohm/5 W you can get 8.1 ohm /105 W? Is that allowed?

Yep, that'll work because the power dissipation will be divided between all the resistors.


The 8 Ohms is important because that's the load the amp wants to see in order for the power amp circuitry to operate properly, as long as the power dissipation of the Dummy Load is more than what the amp will put-out there won't be any risk of burning out the load.