This is a question for some pong collectors. I have two orginal Sears Pong units. Both have some unique subtle differences. Both units have the sound coming out of the unit itself, but one unit has louder sound. It also appears that this unit has a more defined speaker hold in top of the unit. Is this a known variant with these units? Did later Sears Pong units have louder sound? Any help would be most appreciated.
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