These woofers are only shared with the LF-1 sub that Altec made if I recall.
Both coffee table subs used it, one of them used a modified version with dual voice coils.
The model 8 also used the 14's woofer(034633) as did the last several pairs of Santana II to leave the factory.
Compared to the model 15 woofer(033785), the 14 woofer has a downward shifted frequency response, and is slightly less sensitive with it's overall smaller motor.
The model 14 would be the first and only home loudspeaker from Altec that used a constant directivity horn. With it's 7/8 inch throat it was designed specifically for use with the new ferrite 900 series compression drivers which enjoy a frequency response that is shifted upward nearly a full octave above the 800 series alnico drivers. It definitely has a different sonic signature from the classic exponential horn equipped Altecs.
The end result for the model 14 was a speaker system with a broader and smoother frequency response than any single box Altec had offered prior. Just don't expect that broad smooth response when you drive them up to their rated power.
The cost/compromise is that the mid-range acoustic output of the system cannot keep up when driven hard. Even though the marketing would have you believe they were intended for high power solid state amplification, high acoustic output(spl) is not where they shine best.
The 40 year old crossover engineering saw several revisions during the short production span, and given the advancement in consumer based analysis hardware and software, further improvements can likely be made by those willing to make the personal investment.
All that said, if a person takes the time to get their placement right and feeds them with decent quality upstream gear, they can be a very rewarding, and satisfying speaker. Feed them a few good watts and joy will follow.
Just my .02 y'all understand..............................