I need help reattaching speaker wire connector

[US6x4]

I need to reattach the wire connector inside my H-161 headset. The wire pulled out and I'm not sure how they reattach. It seems that they don't twist on and I don't see evidence of a crimp. Are they supposed to be soldered on?
Any ideas?

 

[US6x4]

I spied a dabble of solder on connection of the other speaker in the headset so I'm thinking of starting with a soldering attempt.

 

[ke6rwj]

Flux is your friend here, these wires don't like to be soldered without it

 

[US6x4]

Flux is your friend here, these wires don't like to be soldered without it

Good call. I need to get some flux and also some smaller gauge solder wire

 

[papakb]

See if you can't locate some low temperature solder too. Some of the older audio electronics had tinfoil wrapped string rather than real stranded copper wire to keep them flexible.