EV B-215 M Manual Question

[4stringPhlegm]

I'm reading the Manual for the Ev B-215 M and it says that it has has a Nominal Impedance of 4 ohms and a minimum Impedance of 2.7 Ohms, is it safe to use with a 4 Ohm minimum head? I have no idea what Nominal impedance or Minimum impedance means.

 

[B-string]

First impedance changes with frequency. Nominal impedance is the number to look at. It should be just fine with your 4 ohm min head.
Minimum impedance is the least impedance to AC (highest amp load) that the system will have. Usually not a concern, could be useful info if you had a overly sensitive or cheaply designed/built amp head.

 

[billfitzmaurice]

I'm reading the Manual for the Ev B-215 M and it says that it has has a Nominal Impedance of 4 ohms and a minimum Impedance of 2.7 Ohms, is it safe to use with a 4 Ohm minimum head?

Yes, because amps generally are rated for the nominal impedance load as well. And the minimum impedance only occurs at a couple of points across the cab bandwidth; through most of the bandwidth impedance actually tends to run quite a bit higher than nominal.