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3ll3d00d

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3ll3d00d last won the day on June 6

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About 3ll3d00d

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  1. 3ll3d00d

    X-curve compensation re-EQ

    Yes that is part of the audiophile style marketing they use. You will also find not many measurements are available to verify what it is actually doing and how well it performs. FWIW I think https://patents.google.com/patent/US8094826?oq=8094826 is their patent, it seems pretty generic to me though. To be fair I have listened to their high end kit and it is good so there some substance there, it isn't just audiophile blather.
  2. 3ll3d00d

    X-curve compensation re-EQ

    fwiw this is basically the way roomperfect is marketed (albeit with a healthy dollop of audiophile voodoo mixed into the language used)
  3. 3ll3d00d

    Woofer for 40-250Hz?

    finally received the amp so should be able to fire this up properly soon https://imgur.com/a/CPjzmq5 I did test the initial XO and I think the woofer filter hasn't come out quite right, some details in http://www.diyaudio.com/forums/multi-way/292379-syns-post5471697.html need to get time to investigate that but frankly it's been too hot in London recently to consider doing anything except idly watching the World Cup while drinking cold beer
  4. 3ll3d00d

    BMS 18N862

    It's still listed on the BMS site and appears to be readily available in Europe
  5. 3ll3d00d

    Woofer for 40-250Hz?

    I did give it a sweep through dats and used the rub and buzz test, seems ok. Will hook it up to an amp soon to make sure. There are two different uses here. I have built one to try out the smallsyns so I can decide whether to build 3 more to use in my cinema setup. This one will be used by a local choir for their rehearsals so will have much more limited output requirements. I could probably have got away without the woofer for this one but I thought it would be handy for trialling the speaker as I intend to use it. This means a woofer happy in a pretty small box (~1ft3), the fp looks good for that. The AE will replace the woofers in my current 3 way LCR regardless of whether I build the smallsyns. These will be in bigger boxes (maybe 2.5ft3) and need markedly more output capability. The AE were the best ones I modelled for this job.
  6. 3ll3d00d

    Woofer for 40-250Hz?

    The TD12 turned up today, just about safe and sound albeit no thanks to UPS who appeared to have played football with one of them ๐Ÿ˜
  7. 3ll3d00d

    Woofer for 40-250Hz?

    FWIW I ended up ordering 3 TD12X on the 9th May and they were shipped on the 25th, they landed in the UK just now apparently so should be with me in the next day or two. I also have a faitalpro 12rs1066 to go in the initial (smaller) woofer, seems like a fairly beefy little thing https://imgur.com/a/lMGuhqm surround seems rather enormous I chose this on the grounds it is comfortable in a pretty tiny box and aimed for a tune that in the high 30s, result was a 37Hz tune https://imgur.com/a/4bmN268 https://imgur.com/a/xrXFi0Q it's going in this box (NB: the pole was just to check the fit, not actually going to deploy like this) https://imgur.com/a/5FpHtdy powered by a hypex fusion plate amp crossing to the small syns at ~150Hz
  8. 3ll3d00d

    Inductance modelling

    @deepthoughts I think http://www.diyaudio.com/forums/subwoofers/320189-inductance-cancellation-techniques.html#post5390118 summarises it and https://www.roomeqwizard.com/help/help_en-GB/html/thielesmall.html#top gives the full name of the Thorborg paper
  9. 3ll3d00d

    Inductance modelling

    That was the weight it took to reduce Fs by about 25% which is (as far as I recall) approximately what you are aiming for. I don't believe 10-20รท of mms is a target I have ever seen mentioned either, that seems much lower than I recall being used. (Edit: the "testing loudspeakers" book advises to start with 60% of cone mass which is about 100g, not much less than the actual weight used) I am aware of the assorted issues around applying the delta mass method though, as commented in that thread, the resulting basic params are not wildly out of spec.
  10. 3ll3d00d

    Inductance modelling

    I gave it a go with some DATS measurements for a FaitalPro 12RS1066 but get a giant value for Rss (see https://www.avnirvana.com/threads/imported-impedance-measurements-produces-giant-value-for-rss.2687/ for details). I can't say I was super careful with the z measurements but the calculated data seems reasonable with respect to the published params so not sure what is going on.
  11. 3ll3d00d

    Othorn - HT capable?

    IIRC some people have used https://dbxpro.com/en/products/driverack-venu360 with high sensitivity (horn) based designs without noise issues so that might be one choice. If you intend to use a PC for the DSP then interfaces from the likes of motu, RME, lynx should do the job. re headroom, it depends what you take as the baseline so it's hard to say. Clean output at 20dB peaks above average level is probably a not unreasonable figure. I would be inclined to say that the ability to integrate the subs with the mains will be more important than headroom though obviously you really want both.
  12. 3ll3d00d

    Othorn - HT capable?

    headroom is always good of course but, as far as I can see, you are not talking about challenging listening levels ("occasional bursts to 110dB"). This may be worth bearing in mind as you decide on what to build. re the HPF, I assume you're talking about a passive high pass filter. Of course such filters are expensive and/or impractical so the question is why use a passive filter?
  13. 3ll3d00d

    Woofer for 40-250Hz?

    Lead times only about a week atm apparently
  14. 3ll3d00d

    Woofer for 40-250Hz?

    not a bad idea, needs a bigger box though really
  15. 3ll3d00d

    Inductance modelling

    you can import the measurement into REW and let it calculate them for you. This is probably a nice thing to add to all the driver measurements from data-bass.
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