Orbit transmitter speaks!

My US old device, "Orbit" digital proportional transmitter speaks. Ancient device like this was almost deserted as a void, so I imagined some idea to keep this historical item on my working desk just beside LCD. 35 mm diameter small junk speakers are embed at the Gimbal position after removing all the controlling parts.
Before the procedure, an anxiety was in my planning that some low frequency amplifier must be required on the way if connected by way with head phone jack on PC, a stereo amp semiconductor or power transformer like Sansui ST32. But actually, my worry was in vain, they sound enough without some specific amplification, the power is strong enough to satisfy on my desk.