Holmz
Major Contributor
Brent71:
Thank you for the information you shared! Last year I purchased four replacement drivers for the four 8" drivers of my Dunlavy SC-VI. The new version of the drivers, recommended by Madisound, was supposedly the same, just with a higher BL, higher efficiency. I had them measured before installing, and they all came with a higher moving mass than the specs and lower efficiency. I replaced and the speaker did not sound as good as before. So I had the original drivers measured, and they all were better than the old specs, and better than the new specs, all with lower moving mass. So I put them back in the speakers after a cleanup by an specialist, and they sound great. So what I take is that Dunlavy probably purchased lots of drivers and selected only the best for the speakers.
So, my suggestion regarding the first SC-V that you purchased, if you still have the original drivers that don't work, find a specialist that can fix and clean the original drivers, and then put the original drivers back in the SC-V.
I’m not sure about Dunlavy, but some speakers have the crossover tuned for the drivers, on each speaker.
Almost all speaker certainly have the crossover tuned for the “average” driver.
If one is going to replace a bunch of the drivers, then it seems like they would need to redo the crossover in order to get back to some reasonable level of performance.
Of course with an active XO, then it is easier; as the drivers do not affect the XO tuning.
But yeah - it is a good idea to see if the old drivers can be rehabilitated.