I have a pair of unused boxes at 17L, will this do? I guess I can throw in a few 2x4s to strengthen the box and reduce it to 13L if absolutely necessary.
The cabinets are for an ADS L400 and the inside dimensions are 16 1/2 x 8 1/2 x 7. There is a 6" woofer hole to insert any number of pieces of 2x4 lumber to reduce the interior dimensions and stiffen the cab. I'm pulling the table saw out tomorrow and cut up some pieces if I really need to, but the L400 box is actually quite nice. I could also just cut out the front baffle (where drivers are mounted) entirely and leave a lip to mount a new front baffle from the inside reducing the 7" depth to 5.65" and get about 13L.
Last edited:
If you remove the baffle i'm guessing the attached could be folded into that box.
http://www.diyaudio.com/forums/full...ence-project-22.html?postid=534730#post534730
dave
http://www.diyaudio.com/forums/full...ence-project-22.html?postid=534730#post534730
dave
That looks easy enough to build, I will do it next weekend. Any chance the box can be a bit wider and shorter?
As much as possible you want to maintain length & cross-section, but with a fold you have a fudge factor you can use to your advantage.
dave
dave
I take it all I will need are some speaker binding posts and a bit of wire to get these hooked up properly?
And at least an internal divider to define the line... you will be folding the design i posted.
dave
dave
No. I'm going to go ahead and build it as drawn, though if you can fold it into a shorter height, that would be ideal. I can probably drum something up in Autocad, but you seem to like doing this type of stuff...
It seems rather odd to me to have such a narrow baffle. There isn't a speaker I have ever seen with such a narrow dimension. Intuitively, speaker output would wrap around the left and right and disappear instead of coming at me and giving me my money's worth. Am I wrong to worry about that? I kind of want to see several inches on either side of that driver projecting sound at me. Though I will admit, I am just a pirate and have never dabbled in speaker country.
That is the way Tim specified it. Keep the length & cross-section the same -- you can make the width what you want. 140mm is what the FH is.
dave
The folded design shown on post #9 looks like it would fit in the boxes I already have. Going to have to think about how to replace the front and be able to retain the use of the grill covers.
I was looking for that drawing... it is the folded version of the design i posted and the intention was that it could fit inside your existing box.
dave
Does it matter where the driver is mounted along the pipe? Can I mount it just north of the "80 degree" note so as to not have to notch the interior divider?
If the designer has done his homework, then you will have to place the driver as designed. Otherwise you will have a lot of trouble with the third harmonic.
Bob
As Bob has already mentioned, but worth emphasizing. Yes it matters where the driver is placed along the pipe. Its placement mostly kills the 1st objectionable pipe harmonic, allowing less damping and subsequently more bass.
dave
How did your speakers turn out?
I'm building the same ones, how much stuffing did you use? Did you use stuffing on the port side?
- Status
- Not open for further replies.