07-10-2016, 08:45 AM
The tweeters (NT19C) in a pair of the above speakers have failed, presumably due to the fact that the connections to the LF & HF drivers have been wired in parallel externally by connecting the leads from both drivers to one pair of 4mm plugs. For those not familiar with the Q15.2 series of speakers, these employ the B160 dual drivers in which the aforementioned NT19C tweeters are fitted through the centre of the Bass/Midrange driver's magnet assembly. AFAIK, there are no crossover components fitted, so either external crossovers should be fitted, or a Bi-amplified system should be used to drive them. The connection plate on the rear of the cabinet has four terminals, which suggests to me that BiAmping should be used. Can anyone 'out there', familiar with these speakers, confirm my thoughts as expressed above? N.B. I haven't yet looked for technical info on the Q15, but will do so shortly.
