That is a good size opening in the funnel. I highly doubt that it will add noise to the overall output of the drivers. I have never encountered noise in my systems. If you are going to use plexi or acrylic, use a minimum of 3/4" as it is not as strong as mdf is. Layer some foam tape onto the edges of the box to ensure a seal between the box and the plexi.

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Forbidden Audio Ltd. (1995)
Rob Atkinson

MSN and E-mail - forbidden@telus.net

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