I was bored and decided to throw in my 15" Brahma.
Built a quick sealed enclosure since I'm in the process of moving again and wanted some bump due to my CDT SQ`12 taking a crap on me (voice coil seperated under the dustcap),
Heres the enclosure 3^ft after displacements
Enclosure
http://i7.photobucket.com/albums/y287/SubSonicVibez/Box1.jpg
http://i7.photobucket.com/albums/y287/SubSonicVibez/Box2.jpg
Angles to minimize standing waves
http://i7.photobucket.com/albums/y287/SubSonicVibez/Inside1.jpg
Terminals
http://i7.photobucket.com/albums/y287/SubSonicVibez/Terminals.jpg
I cant believe how musical the sub is with this enclosure. She also wang chungs when she needs to so I'm very pleased with the performance. She's got 1000watts RMS @ 1ohm.
Now its time for sleep.
Replies (4)
ttocs on 07/21/2007 10:26:31
looks good, have you heard it yet?
Too bad that adire shut down huh?
trunkisloud on 07/21/2007 12:21:24
hey so i hate to sound dumb but im gonna anyway.....whats the point of curvature inside the box where the corners meet?? .does it effect the sound
30Hertz on 07/21/2007 13:46:32
it sounds great. I was really impressed with the output but then again, i was use to a single 12 from before.
I was pretty bummed when Adire shut down, but If anything happens im sure i can get recone kit from Fi or RE for it.
Trunk, I put in angled cuts around the coners to minimize standing waves. Standing waves cause tend to make a box sound empty or have a lil echo feel to them and dont sound as full from what ive experienced in the past. Dont know if they help that much but it sounds better than the past enclosures I've done without them.
swez on 07/21/2007 18:35:08
This is an effective practice to a degree and when used in conjuction with fill materials, (Polyfil, fiberglass batting or similar materials) will dampen standing waves, one can virtually eliminate cabinate resonances, hollow or overly live sounding enclosures.
We find this very true in large enclosures, sealed or ported. The more rear cone wave reflections we can eliminate, the better a speaker/sub will sound.
Analogy: Ever been in a small/large room with lots of hard, reflective surfaces? What happenes to audible sound in such a room? It bounces all over the room. Clarity and intelligibilty of the audio source is grossly affected by such reflections.
Example: A PA page in a large, undampended room is very hard to distinguish what the messages was saying. It comes out very garbled and unintelligible. "What did that message say?"
The same thing happens in larger cabinates that do not use any dampening materials. Try it and you'll see what I mean.
Swez
Built a quick sealed enclosure since I'm in the process of moving again and wanted some bump due to my CDT SQ`12 taking a crap on me (voice coil seperated under the dustcap),
Heres the enclosure 3^ft after displacements
Enclosure
http://i7.photobucket.com/albums/y287/SubSonicVibez/Box1.jpg
http://i7.photobucket.com/albums/y287/SubSonicVibez/Box2.jpg
Angles to minimize standing waves
http://i7.photobucket.com/albums/y287/SubSonicVibez/Inside1.jpg
Terminals
http://i7.photobucket.com/albums/y287/SubSonicVibez/Terminals.jpg
I cant believe how musical the sub is with this enclosure. She also wang chungs when she needs to so I'm very pleased with the performance. She's got 1000watts RMS @ 1ohm.
Now its time for sleep.
Replies (4)
ttocs on 07/21/2007 10:26:31
looks good, have you heard it yet?
Too bad that adire shut down huh?
trunkisloud on 07/21/2007 12:21:24
hey so i hate to sound dumb but im gonna anyway.....whats the point of curvature inside the box where the corners meet?? .does it effect the sound
30Hertz on 07/21/2007 13:46:32
it sounds great. I was really impressed with the output but then again, i was use to a single 12 from before.
I was pretty bummed when Adire shut down, but If anything happens im sure i can get recone kit from Fi or RE for it.
Trunk, I put in angled cuts around the coners to minimize standing waves. Standing waves cause tend to make a box sound empty or have a lil echo feel to them and dont sound as full from what ive experienced in the past. Dont know if they help that much but it sounds better than the past enclosures I've done without them.
swez on 07/21/2007 18:35:08
This is an effective practice to a degree and when used in conjuction with fill materials, (Polyfil, fiberglass batting or similar materials) will dampen standing waves, one can virtually eliminate cabinate resonances, hollow or overly live sounding enclosures.
We find this very true in large enclosures, sealed or ported. The more rear cone wave reflections we can eliminate, the better a speaker/sub will sound.
Analogy: Ever been in a small/large room with lots of hard, reflective surfaces? What happenes to audible sound in such a room? It bounces all over the room. Clarity and intelligibilty of the audio source is grossly affected by such reflections.
Example: A PA page in a large, undampended room is very hard to distinguish what the messages was saying. It comes out very garbled and unintelligible. "What did that message say?"
The same thing happens in larger cabinates that do not use any dampening materials. Try it and you'll see what I mean.
Swez
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