[Station X]

Was there an instruction leaflet with the meter?

To do the speaker test, as suggested in post #3, you'll need to set your meter to the 200 ohm resistance range which is roughly at the 7 'o' clock position. There may be a lower resistance or continuity range, but the picture is too out of focus to tell.

Look at the display and you'll see how your meter displays an open circuit or infinite resistance. Remember that for future reference and don't refer to "No Reading" which can be meaningless.

Then touch the probes together and again note what the display shows. That's how you meter displays a short circuit or very low resistance.

Finally place your probes on the speaker terminal either way round. Note the reading and listen for a click or rustle as the probes make and break contact.