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Re: Request for Four Pi plan [message #99437 is a reply to message #99435]

Sun, 24 May 2026 08:59

amigo
Messages: 8
Registered: March 2026

Esquire

Great thanks for your clear advice!

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Re: Request for Four Pi plan [message #99438 is a reply to message #99437]

Mon, 25 May 2026 08:20

amigo
Messages: 8
Registered: March 2026

Esquire

Dear Wayne,

As you advised, I fixed the dimensions according to the plan. However, since we use the metric system here, 3/4"T (~19mmT) is unavailable, and only 18mmT plywood is possible. Therefore, I aligned the outer dimensions of the enclosure with the plan. And, taking this opportunity to reconsider, I am considering joining two 18mmT plywood panels together for the front baffle. As you have mentioned several times, this has the disadvantage of being heavier, but I think it will be easier for me to work with given my limited woodworking skills. So, the plan is to align the rear panel of the two baffle panels with the plan dimensions and attach the front panel to the front of the box. Is aligning the dimensions in this way the correct method to comply with the plan?

Regards, Chang-Hee

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Re: Request for Four Pi plan [message #99441 is a reply to message #99438]

Mon, 25 May 2026 21:41

Wayne Parham
Messages: 19036
Registered: January 2001

Illuminati (33rd Degree)

Is there any way you can attach a thinner front to your 18mm baffle? Maybe a small 9mm thick panel? If you do that, you can essentially build the cabinet with exact dimensions shown in the designs, and simply glue an extra 9mm panel in front. That will also allow you to route the midwoofer and waveguide/horn mounting surfaces to provide flush mounting. It's extra work, but it's attractive and it's not too hard - watch some videos showing the process.

Also, be careful that the port duct is 25.4cm from the front edge of the baffle to the edge on the inside of the box. The total path length is 25.4cm.

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