Discussion in 'Speakers' started by 62sunbeam, Jan 28, 2017.
the APM-690s are not the desireable square driver Sonys are they?
No, those are just single coil woofs, and kind of cheap at that. Look for 77/77W.
I found these at a thrift store awhile ago, one had no output at mids, which I traced to crossover (very simple, 2 caps), one of the caps blew, but I destroyed the whole cup removing it from the cabinet. Finally decided to repair them out of boredom, and hooked them up to my speaker selector to compare against my other 2 sets (ADS L710, Polk SDA-2B).
Anyway, as cheaply built as these were (simple crossover, 1 sheet of carpet padding only behind large woofer, thin hollow particle board cabinet), they actually sound surprisingly nice. Very warm, and laid back, but lacking a lot of detail in the highs (which honestly, I probably wouldn't have realized without switching back and forth between the two others). Compared to the L710, they lose across the board, except they've got noticeably more low end (if a bit loose). The polk sda-2b are also obviously better in every way, but I find the Sony more enjoyable to listen to over long periods.
I had similar APMs and also found them surprisingly nice to listen to as well.
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