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How properly covered internal sides of enclosures for speakers with a passive radiator?

My question to people who  have  practical experience to build a sealed (closed) cabinets for speakers with passive radiator?
I have experience to build speakers with ported cabinets, but now I've decided to build a three-way sealed cabinet using one woofer in the middle of the front panel and one passive  radiator below the woofer.  When I built the cabinets with ports, to minimize reflection and etc, I put felt material on all  interior panels : left, right, rear, bottom and top panels (except the front panel). I know, passive radiator works using air pressure from woofer. 

lysha

Showing 2 responses by elliottbnewcombjr

elliottbnewcombjr
5,790 posts
 

My AR2ax were stuffed with ancient fill, now totally filled with polyfill. Not ported, but rather than simply lining the walls like my other ones, stuffed.

elliottbnewcombjr
5,790 posts
 

Check my enclosures, shown here, 9th photo, back off, innards shown:

 

Polyfill, be careful of staples, get them straight, hammer them in if needed.

Prior enclosure, on 8" legs, woofer facing down, I had a buzz once, it was a loose staple on the woofers cone 

Now, shorter base, woofer facing front, slightly tilted back (to aim tweeters at seated ear height and time alignment if you believe in that).

No special bracing in that big box. I put lots of Donna's pricey beloved objects on the slightly slanted top, they don't vibrate or move. Very very slight sensation if holding hand on their side.

Cabinet has a rear port, used in prior room 'no wall behind' location. Port closed for this location with wall behind.

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