I have a pair of B&W DM603S3 Speakers. This started as a single tower rescue, and later I purchased a second tower in mint condition for a stereo setup.
One of the things I did was send the midrange driver to a reputable speaker repair shop. The dustcap was torn to shreds. They mounted a CM8 driver phase plug in its place and I never thought about it again.
I am currently modifying the crossovers and that phase plug revealed itself as a major issue I had let go on for years.
The phase plug was mounted to the magnet, which based on research is the correct way to do it. The stock driver has the phase plug glued to the cone and moves along with it . Theoretically the modified phase plug should provide much better dispersion at high frequencies and essentially improve the off axis response. It also explains why my soundstage always sounded phase-ey as they are now essentially completely different drivers.
This woofer has louder high frequencies compared to stock under the same crossover (ear tested without tweeter)
I want to perform measurements to see what else I can find.
Naturally I could just buy a replacement unit, trash this one, and restore parity but curiosity has the better of me and I am seriously contemplating performing the same mod to my stock unit. It would probably require a crossover redesign but I'm already in the middle of that anyways.
I will perform very very rudimentary measurements in the next few days.
Should I call it quits now and just replace the whole thing or is this something worth pursuing?
One of the things I did was send the midrange driver to a reputable speaker repair shop. The dustcap was torn to shreds. They mounted a CM8 driver phase plug in its place and I never thought about it again.
I am currently modifying the crossovers and that phase plug revealed itself as a major issue I had let go on for years.
The phase plug was mounted to the magnet, which based on research is the correct way to do it. The stock driver has the phase plug glued to the cone and moves along with it . Theoretically the modified phase plug should provide much better dispersion at high frequencies and essentially improve the off axis response. It also explains why my soundstage always sounded phase-ey as they are now essentially completely different drivers.
This woofer has louder high frequencies compared to stock under the same crossover (ear tested without tweeter)
I want to perform measurements to see what else I can find.
Naturally I could just buy a replacement unit, trash this one, and restore parity but curiosity has the better of me and I am seriously contemplating performing the same mod to my stock unit. It would probably require a crossover redesign but I'm already in the middle of that anyways.
I will perform very very rudimentary measurements in the next few days.
Should I call it quits now and just replace the whole thing or is this something worth pursuing?
Update. This thing is terrible. Ordered a replacement driver. Didn't even get to measuring it. It has a semi-subtle honky resonance to it. I guess I was on to nothing.