Originally Posted by
Gary L
Hey AVGUYTX, have you checked to see what HF drivers you have and more importantly what diaphragms are in them?
I agree that the XOs could be suspect here but the first place I would start is at the driver and diaphragm because some fool may have done some switching in there along the way.
You could have the symbiotic or phenolic phrams that require a laoding cap and I have never been happy with the way either of them sound.
Your alnicos could need recharging and especially if they were driven hard or messed with in some other way.
The diaphragm number is on the underside and stenciled on the oposite side of the voice coil windings. It is not the 391XXXX number but the numbers I think sound best are 23744 and the newer 34647. I am sure there are others that sound fine also but I don't know the 806 driver which is probably what you have. I also don't know how to test for magnet strength! One friend replaced his phrams with Radians that work and sound fine and another tried them with terrible results because they did not fit properly. I like the 34647s sold by GPA and if he installs them he also recharges the mags while they are there.
If all is good inside the drivers then you probably do have an XO problem that new caps might solve. From what I have heard here, your caps may be potted in the goo and they can be a job getting to.
Too bad you are not closer because I have drivers and XOs you could switch around to determine where the problem really is. This is the non tech way to do it but switching to known working drivers and XOs works for me.
Gary