Hello, I cut a bookshelf speakers depth in half then doweled and glued the two parts back together. I’d like to get it back to its original quality (it’s a Sony SS-CS5). Can I just add more damping material to the interior or am I going to need to make a box that is the same internal volume? I can just make a new box on a cnc, but to keep that volume and depth of 4” (total) it would need to be almost double the length it currently is. I’ll attach the dimensions of the original, what I made, and if I kept the same volume and depth.
I’m thinking if I need to make a new box I could make it out of 3/4” maple plywood instead of the 1/2” mdf, if that would make a good difference.
Also, is there any way I can find specifications on the speaker drivers themselves?
Thanks.
I’m thinking if I need to make a new box I could make it out of 3/4” maple plywood instead of the 1/2” mdf, if that would make a good difference.
Also, is there any way I can find specifications on the speaker drivers themselves?
Thanks.
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Welcome to the forum!
To return to the original quality you will need the same internal volume as the speaker had when leaving the factory.
If you use a greater thickness for the walls, remember to adjust the external dimensions in order to maintain the correct internal volume.
You are extremely unlikely to find specifications for the drivers inside this commercial design where the drivers are not offered for sale as separate diy units.
P.S. For reference, there is a tuned port on the rear of the enclosure.
To return to the original quality you will need the same internal volume as the speaker had when leaving the factory.
If you use a greater thickness for the walls, remember to adjust the external dimensions in order to maintain the correct internal volume.
You are extremely unlikely to find specifications for the drivers inside this commercial design where the drivers are not offered for sale as separate diy units.
P.S. For reference, there is a tuned port on the rear of the enclosure.
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You don't say why you want such a small depth (3" internal), but this brings problems such as where you are going to locate the tube which was on the back of the commercial speaker. This port is absolutely necessary to tune the enclosure for the correct operation of the speaker, and it is probably longer than 3 ".
Not sure why did you cut the box. In order to add damping material, you could just remove the midbass driver from front. If you do not like bassreflex, you could just plug the port. But the closed box requires bigger volume.I think you just destroyed the speakers.
Different baffle size and enclosure volume means that you have to start from scratch as you need a new design/crossover.
Thank you for all the replies. I cut it in half because I want to use it as a center channel and the location is right abobe a fish tank. Cutting it in half would allow me to mount it on the wall more easily. I’ll see what I could do with the port. I went ahead and just quickly made up a box with the same internal volume. I still have the original port and I think it is about 3”. I’ll see what I can do. And yes it is hard to defeat physics!
If that doesn’t work I’ll just recreate the old speaker size and sell them and as Shadowplay62 has said start from scratch.
Asking about specifications was a long shot, but if someone knew it would be on a forum.
I’ll report back once I put the pieces together.
If that doesn’t work I’ll just recreate the old speaker size and sell them and as Shadowplay62 has said start from scratch.
Asking about specifications was a long shot, but if someone knew it would be on a forum.
I’ll report back once I put the pieces together.
"Ye cannae change laws of physics, Jim"
Or as Scotty really said
"I can't change the laws of physics, I've got have 30mins"
There has to be clearance between the internal opening of a rear mounted port tube and the front baffle of the enclosure.
Since such clearance is not possible in your "prospective box", you will have to mount the port on one of the side walls.
But, if it's a center channel, then it won't need so much bass extension.. Maybe it will do fine with pre/pro high pass filtering and no port? Just so long as the tweeter and midrange are working fine and the woofer is good down to 70Hz...
The hard way to do it, IMHO.
I think I'd be more concerned about the environmental issues of a speaker above a fish tank. What will that do to the speaker?
The hard way to do it, IMHO.
I think I'd be more concerned about the environmental issues of a speaker above a fish tank. What will that do to the speaker?
It will look and sound great when playing Handel's Water Music, or perhaps the theme from Jaws! 😊
Yeah I should have thought of the fish. I’m going to paint it so I’m not so worried of the speaker itself. I’ll ask my SO what she thinks of the fish issue. I’m not sure where else I can mount it besides in front on a stand or above the TV which would put it at 6’ about the floor. I’d like to try and get less bass since the original speaker already has a little bit too much so maybe going with sealing it wouldn’t be a bad idea.
you could add bacl the removed internal volume to the sides of your new creation since you did not like the depth of the cabinet. The wider cabinet will help to launch lower frequencies more effectively than the original narrow cabinet. You might even add a large front edge 1/4 round which will help to smooth your horizontal dispersion as well.
I hope my last couple of posts don't come over as dismissive of your project.
You have a valid reason for repurposing your bookshelf speaker and it captures the true spirit of diy.
You've come to the right place for help - a fantastic seat of learning!
Please don't hesitate to report back or ask further questions.
Well, he forgot to mention at first it was for center chanel (no deep bass required) and he forgot to mention reason for cutting (does not fit to shallow space). Pretty bad communication if you ask me. But good luck with the project. I am out. Btw, i have set of these speakers in attic somewhere, as donated to me. I listened to them and measured them and was quite impressed for the price.