On Fri, 14 Feb 2025 10:07:00 -0800, guida_f via groups.io wrote:
As I wrote in my message #6532 that I sent on 01/15/2024 and as you
can see in the photos I attached to my message #6534 (sent the same
day) a non-negligible difference between the original woofers of the
DQ10 and DQ20 (the ones with the masonite ring) and other woofers
with the same dimensions and holes is the position of the cone in
relation to the basket. In the original woofers the cone is
significantly more forward than in the other woofers. This
compromises the time alignment of the woofer in relation to the other
transducers.
My initial reaction is that a misalignment of the woofer would be less
critical than a misalignment of one of the other drivers because the
wavelengths of the acoustic waves that the woofer radiates are
considerably longer than the wavelengths of the acoustic waves that
midrange and treble drivers radiate. Or am I failing to take something
into account?
John Joseph McVeigh
Butler, Maryland USA
