It sucks throw it out! Your better off without it.They are noisy and really don't do a whole lot.If my memory serves me, most users either go without or sprang for the Northcreek or other aftermarket filter. I tried mine once and took it out ( 801 matrix ) and enjoyed my system much more without it.
A question on a B&W high pass filter
I have a B&W 800 series variable high pass alignment filter for my 803 matrix speakers. I have never used it & wondered if I need to? What would I be expected to hear? Or should I just sell it & forget it? Also, what is the thing worth? New, in box. I never hooked it up since i had no idea of why I would need to. If you can help me understand this question, please answer. Thanks.....