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FredT300B  > Hobbies > Statements Construction Techniques
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FredT300B > The only possible shortcoming I can hear in the Statements is a slight enclosure resonance in the 300 to 400hz range that's apparent with some female vocalists (e.g. Patricia Barbara, Jennifer Warnes) whose voices are already resonant at that frequency. This anomaly isn't too audible, but the resonance can be felt in the enclosure panels adjecent to the woofers and in the top panel. The area of the side that's reinforced by the vertical braces is dead silent at all frequencies. As an attempt to tame this resonance in my second pair of Statements I substituted full braces for the 5X10 partial braces behind the woofers, and I lined the top and bottom sections of the sides with 1/2" plywood. I also lined the top with 3/4" plywood. To compensate for the lost volume I increased the depth of the enclosure by 3/4".
FredT300B > The midrange cutouts of the inner front panels are routed to the dimensions of the inner pass thoough tunnels to minimize airflow restriction.
FredT300B > I found it almost imposslble to cut every panel so the midrange pass through tunnels would just touch the vertical side braces. For this pair I cut the side braces about 1/8" too narrow, then when everything was assembled I filled the gap with construction adhesive.
FredT300B > Here's the high tech "tool" I used to ensure the entire area between the vertical brace and the midrange tunnel is filled with the adhesive. You put a generous glop of liquid nails on this 3'4" wide piece of wood, then you squeeze it into the void between the brace and the tunnel. Then you do it again from the other side. This completely fills the void to ensure a good contact to minimize side panel resonances.
FredT300B > Statements Construction Techniques photo
FredT300B > Just completed Statements playing for the first time.
FredT300B > Installing the crossover in the base makes it easy to tweak the parts without taking the speakers apart. Shown from top to bottom are the tweeter, midrange and woofer crossovers.
The midrange cutouts of the inner front panels are routed to the dimensions of the inner pass thoough tunnels to minimize airflow restriction.
> The midrange cutouts of the inner front panels are routed to the dimensions of the inner pass thoough tunnels to minimize airflow restriction.
The midrange cutouts of the inner front panels are routed to the dimensions of the inner pass thoough tunnels to minimize airflow restriction.
Camera: Canon (Canon Powershot A520) |
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