Table of Contents - One-Sided Baffles
A change in measurement methods required re-measuring the '3&SQ' baffles in
the new room position and at the new distances. Reasonable correspondence
between the old and new measurements was obtained. Increased comb filtering
effects are seen in new data. This is presumably due to the elimination of
the dipole backwave from the measurements.
The one-sided rectangular baffles were an intermediate stage in the
creation of the one-sided trapezoids. It is wise to document the stages
along the way towards a goal. How do you know where you are going, if
you don't know where you've been? The frequency response of these narrow
baffles is amazing when one considers the baffle width requirements of
simple 'theory'. Remember, there is a 2nd order High-Pass Active Filter
in circuit during these measurements set to a -3dB frequency of 150Hz!
The '1S9T' baffle was selected as the best of 15 baffles measured so far;
and, is currently the baffle to which I am listening. It has several points
of superiority over previous baffles, including: Raised output in the 1000
Hz region, relative linearity below 1000Hz compared to previous baffles, and
seeming greatly lessened interaction with the sidewalls when the 'free edge'
of the driver is placed on the outside of the listening position. Only one
section of parametric equalization is being used so far, and that is to
remove the reminant of the cavity resonance at ~6000Hz. A great sounding
baffle. Wonderful soundstage.
The Comparisions Compendium menu has many additional overlayed plots of
comparsions between the One-Sided baffles. It provides for scrolling
analysis of related comparisons. The comparison plots are all 1/12 octave
smoothed.
Comparison: Edge Effects.
Listening Room Measurements Menu.
Table of Contents - Main Menu.
