[Mondial]

Not many good options for using normal speakers. Requiring 32 ohm speakers was how they could use tiny output transistors without exceeding their low current ratings.

You could connect a 24 ohm resistor in series with each speaker to protect the output stage from over current and dissipation, but unfortunately you will lose 75% of the audio power in the resistor. It certainly won't play very loud.

You also might try a step down transformer to match impedances, but finding something useable might be a problem.

Another possibility would be to use the Philco's outputs to drive an external audio amp capable of driving 8 ohm loads. In effect the receiver would become a tuner-preamp and the output would only be limited by the capability of the external amp. This would most likely give the best quality audio, overcoming the limitations of the flea power internal amplifier.