In earlier posts I described how there might be some cabinet reflections happening inside, so the helpful advice was to add some felt to absorb things up. Here is what I did and also what I recommend others do if they are going to build these speakers. I will add these steps and pictures to the build tutorial on page 1 of this thread.
I used F-13 felt, 1/4” thick and 2” wide strips purchased from McMaster-Carr. 3 feet should be plenty for 2 speakers. It's about $3 plus shipping. Maybe order this with the various black screws that you will need for fastening the drivers to the cabinets.
The W16 woofer has a rubber boot on the back. Peel it off. Don’t worry. It comes off easily. The ER15 woofer does not have this boot so no need to remove it. Otherwise, do everything the same as shown here for the W16.
See. It’s off.
Cover the back with felt. I used one strip (2” wide) and then another strip that was cut to half width (1”). I glued the felt to the driver using hot melt adhesive. It stuck very well.
Then cut a strip of felt that will wrap about 2/3 of the way around the magnet. We do not want to wrap around the entire magnet or else the assembly won’t fit through the cabinet hole. I also have the woofer leads on the bottom here, in the area not covered by the felt. You might want to have your cabinet pilot holes for the woofer screws drilled and positioned with all of this in mind.
I also glued down, with hot melt adhesive, a strip of felt on the bottom of the cabinet, touching the front.
After gluing the felt to the magnet, here is what it looks like.
I used F-13 felt, 1/4” thick and 2” wide strips purchased from McMaster-Carr. 3 feet should be plenty for 2 speakers. It's about $3 plus shipping. Maybe order this with the various black screws that you will need for fastening the drivers to the cabinets.
The W16 woofer has a rubber boot on the back. Peel it off. Don’t worry. It comes off easily. The ER15 woofer does not have this boot so no need to remove it. Otherwise, do everything the same as shown here for the W16.
See. It’s off.
Cover the back with felt. I used one strip (2” wide) and then another strip that was cut to half width (1”). I glued the felt to the driver using hot melt adhesive. It stuck very well.
Then cut a strip of felt that will wrap about 2/3 of the way around the magnet. We do not want to wrap around the entire magnet or else the assembly won’t fit through the cabinet hole. I also have the woofer leads on the bottom here, in the area not covered by the felt. You might want to have your cabinet pilot holes for the woofer screws drilled and positioned with all of this in mind.
I also glued down, with hot melt adhesive, a strip of felt on the bottom of the cabinet, touching the front.
After gluing the felt to the magnet, here is what it looks like.
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