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port and insulation [message #95689] Sun, 19 June 2022 16:38 Go to next message
Idler50 is currently offline  Idler50
Messages: 3
Registered: April 2022
Esquire
I've been working on a 4 pi build off and on for a while. They're ugly but sound quite nice. One question - Did I screw up my dimensions or is the insulation on the rear panel of the speaker supposed to cover the rear of the port? I've checked and double checked and believe my dimensions to be right but I didn't expect to have that.

The other question I had I found in another thread was that the kraft paper backing from the insulation should be removed.
Re: port and insulation [message #95691 is a reply to message #95689] Mon, 20 June 2022 08:51 Go to previous messageGo to next message
Wayne Parham is currently offline  Wayne Parham
Messages: 18395
Registered: January 2001
Illuminati (33rd Degree)

The insulation gets very near the port, yes. It's OK because bass passes right through it, which is what we want. The insulation is really there to damp the lower midrange.
Re: port and insulation [message #95694 is a reply to message #95691] Tue, 21 June 2022 08:00 Go to previous message
Idler50 is currently offline  Idler50
Messages: 3
Registered: April 2022
Esquire
Thank you Wayne. perfect!
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