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  1. Today
  2. SME

    MicroWrecker build thread

    I doubt those kinds of errors in dimensions would have made much of a difference, but anyway units matter. :)
  3. m_ms

    MicroWrecker build thread

    Construction quality of the building is likely the primary reason for the neighbors not being rattled out of their minds, indeed, added to (fortunate) inventory layout of my neighbors homes and how they relate to the placement of my listening room. In other words: luck is also a factor here, I guess. Had a near DEFCON 1 moment earlier this evening. Being that I need a rack build over the on-the-side-lying MW between the main speakers I thought I would just manually measure out the height of the MW, and somehow surprised by the number I saw was later horrified when my measurement didn't correspond to that of @lilmike's orig. Sketch-Up drawing. I was devastated, panicked, made more measurements, all of which were off - what the hell would all this effort be worth with a pair of huge, heavy bass horns with a likely misaligned horn expansion?! I was shut down for over an hour - close to weeping even. Desperate I contacted Simon Mears (who made the CAD-drawings from Mike's orig. plans, and is also the man behind my main speakers), and he gave me the height spec from his CAD drawing: some 1206mm's. Hey, this corresponded precisely with my own actual measurement, which veered off from what I thought should be about 1170mm's. Another measurement from Simon as requested from me of the horn mouth, and that fit my measurement to the mm as well. I then divided Simon's measurements in mm's with those from Mike in inches, and got 2,54. Blood went to my head again - I had used the crude 2,50 as a conversion value from US inches to mm, and with the correct 2,54 value all actual measurements were spot on down to the damn millimeter. Now I was even closer to weeping - the day's small miracle!
  4. Yesterday
  5. dgage

    MicroWrecker build thread

    You guys are lucky that construction quality is that good. Even following code, construction is often not that great depending on where you live in the US, so if you’re in a normal apartment in the US, I doubt you could have even a Sb16 without getting into trouble even on low volume. Now bigger/taller buildings might have concrete floor construction and likely wouldn’t bother neighbors as much but that’s definitely not the norm where I’m at. Looking good and sounds like a good plan.
  6. No BEQ applied for any titles in that post, and I gave my subjective impressions. It seemed to me that many of the smaller effects in JW had decent ULF including some in the single digits. I presume the larger effects are more strongly filtered (which is consistent with my experience), and these effects dominate the appearance of the PvA. If this is indeed the case for JW, then BEQ is likely to give mixed results rather than across-the-board improvement. Whether there is an improvement on-net may be a matter of opinion and may depend on the playback system too. For example, the biggest effects may get the right amount of ULF, but the smaller effects might end up with too much ULF. A lot of people may be OK with that. I prefer to prioritize correctness above 20-30 Hz before worrying about ULF at all, because IMO the higher frequency stuff is a lot more important. (This is a key point I probably didn't emphasize enough in some of my recent posts in which I criticized BEQ in which the same EQ is applied to all the channels to make the channel-sum PvA data look prettier.) I should also clarify that I experience ULF on my system a bit different than I think a lot of people do. Even though my subs have plenty of output and I'm on a suspended floor, the floor doesn't actually move or vibrate much at all. I rarely get wobbles, and usually only with long duration content at specific frequencies that resonate with my floor (there's a scene in "Star Trek" that I know of). However, I definitely notice a difference with and without ULF, and I experience it as much or more in the tactile domain. Basically, I get a lot of chest and body cavity sensations with my bass in general, and the ULF affects those sensations in ways I detail in the next paragraph. First, I need to point out that even if a soundtrack is filtered, one can still "hear" and "feel" the ULF content that was part of the original sound design in many cases. That's because such content almost always occurs in conjunction with higher harmonics and/or amplitude modulation, which clues the brain into the missing fundamental. Of course the filter still adversely affects the *quality* of the sound and tactile sensation. For movies that are obnoxiously humped, you often get a kind of droning in the 20-40 Hz range (depending on where the hump is) that undulates at the lower (missing) fundamental frequencies. For example, a helicopter filtered this way might deliver a kind of sloppy "woob-woob-woob-woob" sound and sensation, beating at 7-11 Hz (or whatever), even though the content at the actual fundamental frequency has been filtered away. Without the filter however the sound and sensation are much tighter and more firm. It's more of a "thD----------thD----------thD----------thD---------thD---------", where the dashes emphasize the dead space between pulses and the capital 'D' emphasizes that there's still lots of weight, even though it's very tight. The filtered version may seem heavier, but the unfiltered version is much more natural and realistic. In general, the lowest frequency undulations in a soundtrack seem much more articulate and *palpable* without a filter. Of course the experience may be very different on a system that struggles to accurately recreate the non-ULF frequencies, which is most of them. For at least some people, the 7-11 Hz beating of the helicopter rotor may be completely missing without high SPL reproduction of the actual 7-11 Hz component, in which case I would expect people to prefer the ULF boost despite potential harm done to the rest of the spectrum. As such, I kind of gave up arguing my concerns about the quality of the BEQs posted on AVSForum (as opposed to those done by @maxmercy and posted here on DB) because I realize those BEQs probably *do* improve things for a lot of people, especially those with TTs/MAs that may otherwise be idling. For me personally, I (believe I) have extremely high accuracy across the spectrum (bottom to top), and I definitely notice degradation to the non-ULF bass frequencies. Indeed on a good soundtrack, I don't really hear "bass" isolated from the rest of the spectrum, unless it's specifically called for in the score or in the scene (such as when sound systems are depicted in cars or clubs). What I hear are synergistic full-band sounds, some of which induce physical sensations that can be quite strong and sometimes intricate. The bass is just part of the sound and sensation. Significant degradation anywhere in the spectrum ruins that synergy, so I do what I can to preserve it. Spinning "chopper" blades may indeed have a fundamental at 7 Hz, but the "chop" has a very broad spectrum with content all the way into the treble. The sound of a sine wave of 7 Hz is a very smooth undulation, one that requires obscenely high SPL (or a vibrating floor) to perceive. However, that's nothing like the "chop" of a helicopter blade which is a much tighter, more abrupt sound and sensation. The 7 Hz part is probably the least important part of the spectrum from a perceptual standpoint.
  7. Droogne

    MicroWrecker build thread

    I have a similar living situation (2nd floor with up and downstairs neighbours, both with little children), and I also never had any noise complaints from them. I dont have a lot of contact with them, except passing them in the hall, but they did jokingly (and friendly at that) call me 'the guy with music right?'. Both my large horn sub and my 2x 18" 2kW subs never caused any trouble.
  8. m_ms

    MicroWrecker build thread

    Two pics of the MW's in my listening room, only partly unwrapped (and not oil-finished). I also placed the B&C driver in one of them just for fun. The Uccello main speakers aren't small by any measure, or so I thought.. The plan is for one of the MW's to be placed on its side between the Uccello's, and the second MW against the rear wall behind the listening sofa. We'll see how that fares. After the clear oil finish the MW's should attain a light-golden appearance not too far from the mains. I like the look of good, "naked" quality ply.
  9. m_ms

    MicroWrecker build thread

    Haha, what a great reply from your wife As I just replied to Ricci, the MW's may prove a challenge re: neighbors. But so far they've been very tolerant. Good answer. Indeed Denmark is a small country. I know of one in the whole of this country (Norway, different matter) - yes, only one who's using horn subs in his home setup. I'm sure there're more of them out there, but I bet they're far between. The one I do know has an awesome all-horn setup (all-horn from top to bottom is even more rare): 4-6 FLH's (can't remember how many exactly) with a 15" Fane Colossus driver in each that extends to 25Hz, and paper horns from Inlow. All active. Subs take up some 4 square meters total volume. Impressive..
  10. m_ms

    MicroWrecker build thread

    When I used the SVS SB16-Ultra over the entirety of my ownership of it (i.e.: about a year and a half), I had not once received a complaint from the neighbor above or below. And believe me, I've watched countless Blu-ray films and given them a good run, music as well. I know, compared to you guys and the subs you're used to this may equate to iPhone-levels, but still. It even got so far that I wondered why my neighbors didn't complain, so I asked them to their faces, several times: "Have my watching films and listening to music ever bothered you?" Their answer, repeatedly: No, no and no. Color me surprised. I see you're already on your way to the keyboard wanting to let me know 2 MicroWreckers vs. a single SB16 is like comparing a ship cannon to a bebe gun. Granted, I may invite hell and flynders here with the MW's - I hope not. Oh, btw. - the MW's were safely transported to our 2nd floor apartment. The cabinet maker and I fought for it, but we succeeded. Now I only need to sand the edges a bit, and apply a clear oil. Then comes the mounting of the drivers. And did I say the MW's are huge? Heavens..
  11. Honestly I'm not sure, choppers are usually around 7Hz, as you mentioned previously there were some moments where you can just feel pressure or a really quick pulse, I didn't make note of exactly when those happened.
  12. SME, are you boosting the low end with BEQ for those movies you mentioned? JW Fallen Kingdom needs a big boost down low to extract the deep stuff.
  13. Ricci

    MicroWrecker build thread

    Ugh...2 Microwreckers in a 2nd floor apartment...I hope the downstairs neighbors are VERY understanding.
  14. SME

    The Bass EQ for Movies Thread

    I watched it again recently after another house curve improvement and loved it even more. I also played the race scene at the beginning as a demo (full "-5" MV with house curve, so peaks > 120 dB) for some family including my step mother who wasn't an audio enthusiast in the least. I think I changed her mind. Edit: Among our conversations was her complaint that action movies (which she likes to see "big") in movie theaters are just way too loud a lot of the time. I explained that, even though the mixers work on dub-stages calibrated using the same flawed standard as cinemas, the dub stages still usually sound way better than cinemas. So what sounds too loud in a cinema was probably just "really exciting" for the mixers. I think the demo cemented that understanding quite well.
  15. SpeakerPower

    Luke's basic amplifier tests

    Hey I resemble that remark!
  16. dgage

    MicroWrecker build thread

    Second floor apartment? Really? When I have people ask about my subs and find out they’re in an apartment or connected condo, I tell them my subs come with eviction notices. Good luck with those and the fight to keep them. When I first turned on 3 sealed 18s for my wife, I said if that was too much vibration, we could put rubber feet under the couch. She looked at me and said, “you most certainly will not, that was awesome.” And I’m sure people ask why do you need a car as fast as a Bugatti. If you have to ask, you just don’t understand. Luckily, our subs are a heck of a lot less expensive for their capabilities than someone buying an exotic car.
  17. Pradeep

    Luke's basic amplifier tests

    Someone over at AVS received an sp1-4k or 6k recently and looks like they are using an internal cover again on the plate models. Glad to hear Brian's potentially still got some input there even if he does spend most of his time sitting on a beach drinking rum now.
  18. Last week
  19. m_ms

    MicroWrecker build thread

    It would be interesting nonetheless to do a comparison between a MW and a 24" sealed sub From what I can read here and there the magnifying power of something like a tapped horn is in the vicinity of factor 3 (or even more), so a 15" in a TH would roughly equate into two 18" direct radiating units or thereabouts? Reading through the big "Danley DTS-10 "Super Spud" DIY kit"-thread though it's quite obvious the DTS-10 sports a different kind of overall sound delivery and impact compared to a series of 18" DR's (poster 'MKtheater' in particular provided a lot of intel in the form of actual listening impressions here), which points to the tapped horn itself as something that leads to a distinctive bass imprinting (which, perhaps, could also be said about direct radiating solutions, so not to hand a "character-baton" to TH's as such). On a side note I saw my completed MW's today (at the cabinet maker's workshop at a local theater), that is: one of them only needed some clear oil and finishing touches around the edges, while the second one had just been assembled today and was still wrapped in clamps. What dawned on me though when I finally laid eyes on them "in the flesh," so to speak, was their sheer size. Holy freakin' moly - they're huge..! 😱 I've measured out these things at home to plan for their placement, but nothing prepared me for the solid surfaces of these when I finally saw them for real. Subjectively they look something like 50% bigger than I'd imagined. A lighting technician from the theater came by as the cabinet maker and I stood there looking at the (almost) finished MW, me still in amazement, and wryly asked: "Isn't one of them enough?" Having now been confronted with the sight of these I hesitated a bit, then replied: "Ooh yes, certainly going by the sheer output this will be able to produce, but.. " and then followed a less than convincing speech, possibly because I now felt it to be quite hilarious, about smoother room respons with 2 differently placed subs (or more) and all that jazz. Needless to say the lighting technician seemed skeptical about my explanation. With a smile on his face the cabinet maker then followed with the question "For how long will you be allowed to keep these, and at what cost?" We just laughed Tomorrow they'll be transported to our home, a second floor apartment. More to come, if we'll survive the endeavor of getting them up the stairs..
  20. dgage

    MicroWrecker build thread

    It’s not quite a sealed 24 but it might wreck something. Lol! I kid. Looking great so far.
  21. Ricci

    Ricci's Skhorn Subwoofer & Files

    Great... You will be the first person I know that has gotten their hands on these.
  22. radulescu_paul_mircea

    Ricci's Skhorn Subwoofer & Files

    Today was the delivery term, but because of the holidays, it will be a small delay. I'll post some pics and my opinion when I get them.
  23. Ricci

    MicroWrecker build thread

    Looks good...
  24. Ricci

    Ricci's Skhorn Subwoofer & Files

    Paul did you get the 21NTLW5000's? There aren't any over here in the US yet. I'm keeping an eye out for it because it's on my short list.
  25. m_ms

    MicroWrecker build thread

    Finally some pics of the assembly process. The MW's of @lilmike are finished on Wednesday.
  26. I'm way behind on the MI series so probably won't see this one for at least a year or something. I am getting caught up on a lot of other recent movies. Here are some recent watches and mini-reviews, in no particular order: '"Maze Runner 2" (Atmos): boomy 40 Hz effects but extremely dynamic soundtrack with very crisp, tight gunfire that really pings the chest; played at or near MV "0" "Maze Runner 3 (Atmos ?)": hump / filter at ~25-30 Hz is very obvious among the rather relentless and monotonous bass; relatively disappointing ending; played at more typical MV "-5" "Avengers" (7.1): uninspired sound design (especially in the surrounds and bass); dynamics not completely massacred like in "Black Panther" but still thoroughly screwed up; big effects lack impact and come across as harsh; I'm playing this at MV "0" and there's nothing there but a lot of wasted headroom; way over-hyped/over-rated movie, especially the ending "Solo" (7.1): played at or near MV "0"; very heavy on treble and treble effects, many of which are surprisingly dynamic; limited use of bass with some repetitive 28-30 Hz drone; ignoring the bass, I really like this track for its life-like treble and absolutely loved the movie, which was underrated IMO "Jurassic World" (7.1): mostly entertaining movie with some nice bass; I thought it was filtered and was expecting 30 Hz boom, but a lot of the smaller effects were very palpable; played at MV "-4"; like many movies, I wish it had more mid range "Dawn of the Planet of the Apes" (Atmos): decent movie with fairly unremarkable (and mostly filtered / boomy, IIRC) bass; excellent use of Atmos/surrounds for ambiance; loud with bad clipping; played at MV "-6" and then backed down to ~"-9" after my ears got tired "Incredibles 2" (7.1): hump at 30 Hz which seemed to rob the presentation of a lot of slam/impact; decent macro-dynamics (for recent Disney), but otherwise unremarkable; I wanted to like this movie more: it starts out exploring a theme based on contemporary social issues but the ending doesn't provide a satisfying resolution to those issues, which makes the film come across as exploitive in hindsight; I don't think it will age well like the original did FWIW, my opinions are very mixed as far as recent Disney/Lucasfilm/Marvel soundtracks goes. I think some of the soundtracks are very good, some are mediocre, and others are crap. The one thing that's consistent about these tracks is a lack of consistency. Reference playback level is typically higher than other films, except when it isn't (e.g. GOTG 2). Re-EQ application seems to be inconsistent, with some films getting it and others not. Some films with higher reference level use the extra headroom for very nice micro-dynamic sound; others have aggressive limiting, leaving most of the headroom wasted. Overall, I think the Star Wars and Pixar films have faired better than the Marvel films, especially the most recent ones. Maybe it's a sign that Marvel as a franchise is running out of gas?
  27. Ricci

    Ricci's Skhorn Subwoofer & Files

    That is good news. I'm glad you verified it.
  28. radulescu_paul_mircea

    Ricci's Skhorn Subwoofer & Files

    Going back to my issue with the drivers in electrical series, I can say there is absolutely no difference between them linked like that or parallel. All my tests and measurements showed me nothing changes, a small voltage difference is present, but only 1-2 V at 60 V sines.
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