Impedance Matching - Tube Amp/Speakers

What you are reading with the multimeter is the speaker's impedance at a frequency of zero Hertz, or in other words its DC resistance. That will differ significantly from its impedance at audio frequencies, which is what matters.

According to this review "impedance is shown as 3 to 10 ohms, with 6 ohms nominal, which should be an easy load for most amplifiers to drive." I don't think there is any cause for concern, especially given that the amp is rated to drive 4 ohms continuously, and is specified for a recommended load of 3 to 8 ohms.

Regards,
-- Al

Just connect your speakers to the 4 ohm taps onyour amp. Will work fine. I use a VTL ST-85 to drive 4 ohm Maggie 3.6's with no problems

Once again, Al offers excellent advice.

It is worth mentioning that the impedance of the speaker will affect the sound and control the amplifier has.

You may notice a bit of extra bloom in the bass or loss of control.

Not a big concern but you could try the different outputs on the back of the amp (presuming they give you a choice) and use the one you like best.

fwiw...

You should try the speaker with both the 4 ohm and 8 ohm tap to determine which sounds better. Using either is entirely "safe" in terms of not damaging gear.

The 4 ohm tap will deliver less power, but, it will increase the damping factor, something that may improve the frequency response (typically, tighter, better defined bass).