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maxmercy last won the day on June 24

maxmercy had the most liked content!

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About maxmercy

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    Ultra Bass Overlord

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    NW FL
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    Lots of stuff....too much, in fact

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  1. The first time I saw BL2049 was at low volume late at night with the crowsons providing all the deep bass, and still that score was reach-for-the-volume-control-lest-you-wake-people loud. Something tells me if Philip K Dick was alive he would probably approve. JSS
  2. maxmercy

    The Bass EQ for Movies Thread

    I will look at it soon. JSS
  3. maxmercy

    The Bass EQ for Movies Thread

    Some boost under 20 would do well enough for this one. JSS
  4. maxmercy

    Bulding the Room2 listening room

    Very interesting observations. How does the FL/FR/BL config do higher in frequency velocity/phase/FR wise? What size driver/sensor do you use for velocity measurements? I need to actually do these measurements at some point. JSS
  5. maxmercy

    Samps DS21 Build

    Make sure you put a finish on the cab before you install the driver. I have had cabs that went without finish for 3 years, b/c after the driver goes in, it is so easy to just listen to it. JSS
  6. Good to see you here! Interesting... Can you run the same audio through Audacity's Clip Fix plugin and see if you get similar results? I think Clip Fix runs a bezier fit, this looks similar. JSS
  7. maxmercy

    Othorn - HT capable?

    In a perfect world knowing what I know now and starting from scratch, a DBA for subwoofer duty and floor-to-ceiling lines for LCRS would be what I would choose for a rectangular room. It would use the room for its purposes instead of trying to absorb/diffuse it away. No need for any floor/ceiling absorption (except overhead speakers), main problem would be time alignment for more than one listening row at Xover freq. Sidewall absorption still needed above and just below sub crossover and for first reflections. It is hard for me to think of a better solution unless it involves a lot of absorptive volume in the room, as multisub approaches really only cover a limited area with similar freq response per my experience. JSS
  8. maxmercy

    Othorn - HT capable?

    Crossovers done right (section 2.3 and onward): http://www.grimmaudio.com/whitepapers/speakers.pdf But few options for implementation with off-the-shelf products. Here is one all in one box solution: https://www.linea-research.co.uk/asc48/ Its LIR filters are similar to Grimm's solution, except using all IIR filters but with one running in 'reverse' to implement the inverse allpass, hence the time latency depending on Xover Freq. for music, latency is not a problem, and a good AVR will have adjustments to sync audio to video for film. Unless a manufacturer comes up with a better FIR/IIR solution (Powersoft has some terrific options built into their amps), the LIR appears to be a decent and robust product, and even used by Danley and others to control some of their loudspeakers JSS
  9. Mr Allen at HPS4000 has been echoing your sentiments for some time: http://www.hps4000.com/pages/articles_page_.html Even though he considers <27Hz not part of the audible spectrum (he is not wrong depending on frame of reference, hence his choice on subwoofer low corner), he has some solid ideas in those articles, and addresses many of the things we complain about here. JSS
  10. Commercial cinemas, when designed, implemented, and maintained properly provide a great low frequency experience, similar to a well done live concert. The caveat is that the experience does not extend much lower than 25-30Hz. Most impact/slam is between 40-100Hz and even higher in frequency. We are freaks here that can monitor and playback the lowest frequencies, that are often taken out of a mix that is CREATED and is meant to be played on a cinema system (25-30Hz vented, high sensitivity subwoofers). While mixing stages have existed in the past that could monitor into the low teens Hz-wise, most cannot monitor below the high-20s. We sometimes are surprised by mixes that do not exclude the content below 30Hz, as those mixes are a significantly different experience in a properly equipped home theatre. Your friends may simply be used to a certain frequency and level of low frequency experience, and call that 'good'. The EQ mixing described is in the Bass EQ for movies thread on this forum. JSS
  11. maxmercy

    Othorn - HT capable?

    That B&C driver models well in horns, you should do well with the Wreckers. Headroom is a good thing. JSS
  12. The Incredible Hulk is still the track I compare all others to. A close second is the Star Trek reboot, War of the Worlds, and all of the 5-Star films on the first page of the thread. For lots of 20Hz and below energy, Battle:LA is hard to beat as well. JSS
  13. maxmercy

    Othorn - HT capable?

    F20 and THT are very similar. THT is tuned higher (~25Hz), and is a little smaller. Lilmike and I fired up his first F20 build IIRC, and it is capable, but it does need the extra bracing, the first one was not extensively braced if memory serves right, and 1 or 2 outer panels were moving with content. I have not heard the Othorn, though. Tapped horns will generally give you more higher order harmonics due to the position of the driver cone. Running sweeps through sealed and resonant systems does reveal some differences, but after signal shaping, and driven at reasonable levels, the differences get smaller and smaller. Turning up the SPL will make the differences more audible. Ricci is probably one of the most experienced people on earth regarding what differing subwoofer systems sound like with high power sweeps and the differences between them. If you have multiple sealed systems, they can sound very much like a horn, it is just that you need more of them, b/c in a horn, excursion is kept low through the operating band. You need multiple sealed units to accomplish the same SPL as a horn with similar low excursion levels. F20s are big, but not that big, and on their sides may fit under your mains well, and can be finished in a similar fashion. They are not that hard to build, and the drivers for them are not budget breakers, but all of the designs you have listed were carefully designed and if well implemented and integrated, should do very well for your goals. JSS
  14. maxmercy

    Othorn - HT capable?

    Build two of lilmike's F20s (well braced) to get the lowpassed horn sound it seems you desire. If that isn't enough, build two more. A direct radiator or direct radiator + vent will sound different than a front loaded horn, and a tapped horn will sound different than a front-loaded horn where the driver is buried and not near the mouth. My guess is you will like the front loaded horn from the posts above. The F20 will do well. If you need more extension, in the same cabinet volume, look at tapped horns or a hybrid design like the SKHorn. Front loaded folded horns will sound like they have 'cleaner' bass due to the lowpass effect the cabinets have. Only multiple sealed or vented cabs can duplicate it, and even then, not exactly. JSS
  15. maxmercy

    Small yet Mighty. The tale of the 12's

    Nearfield subs done right can change an HT experience. It is VERY easy to overdo it with them, though. JSS