Having in this forum studied several attempts to correct and repair old speaker elements, is it really worth the time and effort on these very old units, given their poor overall performance?
I recently inherited a couple of Beovox 1000, plus I also had a couple of Beovox 1200 (similar). I removed the disintegrating elements, and decided to see what could be made of the boxes, within reasonable amount of money, <$150 per unit in total cost. I did find that I had to reinforce the front baffle and corners somewhat. I also put in an adjustable port, just in case it would be useful, which it was.
Since the Beovox 1000/1200 has a larger front surface that would allow additional elements, I decided to use a subwoofer, Peerless SBS-160F35AL01-04 ohm, as 6.5" replacement, with a 4" midrange horn Pyle PDB952 and the classical Eminence APT-80, for the highest possible output the box would take. (Using 4 ohm in the bass, increases the drive efficiency with smaller amplifiers.) The 18db/oct. filter was difficult to work out as i had to include notch links to even out peaks and phase distortions,
The end result was not bad at all, the port allowed the subbass to work correctly. The horns provided strong and even output, right up to 18 KHz albeit some directivity compared to domes. but with very little phase distortion, (excellent stereo image), well up into the level of horn studio monitors. Isn´t this the way to go?
