Those speakers look awesome, Ken. Just goes to show that there are always exceptions.
Thanks John, I refoamed all the bass drivers, and replaced all the caps, and resistors on the crossovers. They are actually quite large as that is a full size square grand piano behind them. And those are the smaller model of the SP L series, they made three others that are much larger, the SP L 800, SP L800 II, and the SP L1000. These are the SP L700's the babies of the series.
As with most Japanese speakers during the 70's there were the most common ones which most people broad brush the entire brand as bad speakers, but there were quite a few exceptions with many of them. Some that come to mind, were Technics, Sony, Yamaha, Pioneer, Sansui, and Kenwood. All of them had a few that were quite execptional in both quality and really good sound. Technics had there SB 9500, and SB1000 both just outstanding speakers, Yamaha the GF1, and FX-3 both real outstanding speaker. Kenwood also made a couple of rare good speakers one that comes to mind is the LS 1900, and Sony made some pretty nice ones as well, the SS A5, SS 7600, to name a few. And Pioneer made the TZ9 which was also a very nice speaker, and the CS 955 which used Be hi frequency drivers is a very nice speaker, the S 933 using a be ribbon and a be mid in a really beautiful ebony cabinet.
Most people like to brand speakers based on the common ones that show up all the time, as those are the ones that most middle class people see most often, but to exclude the real nice ones which are out there doesn't do much justice. If one wants good speakers, I don't recommend buying the more common less expensive ones that most people see all the time, but wait for the real treasures out there that come around once in a while, the wait would be well worth it. Rather than play musical chairs and keep purchasing the most common that were sold to the masses, one would be much better off, spending their money on the more exclusive ones which the Japanese really put their techncial expertise into.