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  1. Sealed Subwoofer Build Projects
    So I'm wondering why my project failed kinda failed, I've got an subwoofer with the following specs: Qes: 0.419 Qms: 4.888 Qts: 0.386 FS: 21.7 Vas: 335L xmax: 8mm SD: 855,3 cm² (15 in) I tried a sealed box with about 140L, got a really nice response curve, simulations predicted -13db @20hz and...
  2. Sealed Subwoofer Build Projects
    A while back I succeeded in improving the performance of my Dayton Audio 15" Titanic kit sub by employing a Linkwitz Transform. I found that the implementation required a reduction in the box volume to keep excursion below Xmax. At that time I accomplished the task with the addition of...
  3. REW Forum
    Hi all, new here. Hoping there is easy solution to this. I have a sub that must have linkwitz transform for certain response. Because I know the particular EQ parameters needed, (which I gather from simulation software - Win ISD). I would like to synthesize the curve digitally as opposed to...
  4. Home Audio Speakers
    I might need a little help,my wife just anounced that either i find a way to get rid of the wires or the home cinema,this is my speakers http://fluance.com/image.php/6034.png?width=800&height=600&image=/images/source/6034.png this is the wires connected from my speaker to the eq...
  5. Audio Processing
    Okay, this may be an odd question. I just want to get some feedback if I'm on the right track. Assume I have a source material mixed in the ITU 7.1 standard (30 degree separation from Center of FL/FR, 110 for SL/SR, 150 for RL/RR.) Now, I want the panning to work for a physical installation...
  6. DIY Subwoofers - General Discussion
    Hi all. I was originally posting about this build on diyaudio, but I was referred here since this is a dedicated home theater forum, whereas diyaudio is more geared towards music. Here's my problem. I'm building a sealed sub that will be flat to nearly 20Hz. I'll be using a Linkwitz Transform...
  7. Electronic Processing/Equalization Devices
    I know that a Linkwitz Transform draws a massive amount of power, but how does that happen if it is implemented upstream of the amp in a DCX2496? I want to make sure this will work before I implement it.
  8. Electronic Processing/Equalization Devices
    BFD & Linkwitz Transform in a DEQ2496 what i mean to ask is if i could implement BOTH BFD & the Linkwitz Transform in a SINGLE device, like the deq2496. while i have an old dsp21124, i would need something with shelving filter type functions, like a deq2496, for the linkwitz transform. i was...
  9. Electronic Processing/Equalization Devices
    HOW? BFD WITH LINKWITZ TRANSFORM? IN A DEC2496? i have dsp1124 and did the room eq setup. but: i am building 2 new sealed subs that will give extended bass IF they are properly outfitted with the linkwitz transform circuit. there are threads showing that you can implement the linkwitz transform...
  10. Sealed Subwoofer Build Projects
    I've built a subwoofer, 90litres, with 2 x 12" drivers. I measured the drivers before designing the box and modeled it as close as i could to 0.707 QTC. I've done several measurements in the box with stuffing to find the best response. This obviously changes the QTC as it makes the drivers...
  11. Electronic Processing/Equalization Devices
    I'm trying to cheat a little with my upcoming build so I thought I'd consult with you genius' :R. Is there a good way to simulate an LT circuit using the BFD? Adding a large boost at 20hz and a wide cut at 35hz gets pretty close but wasn't sure if there might be a better way :huh:
  12. DIY Subwoofers - General Discussion
    I happened upon this nice LT calc and thought I would post it here.No spreadsheet needed. http://www.mhsoft.nl/Linkwitz/Transformation.asp
  13. DIY Subwoofers - General Discussion
    I, like many of you, am lusting after one of these monsters, and after thinking about it a bit, I am leaning away from LLT and more towards LT. One of the reasons is because I've already done a ported sub (which I'm very happy with), one of the reasons is that I've never really experienced a...
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