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Everything posted by MemX

  1. MemX

    New website (beta URL)

    Just having a quick look at the Systems section, I noticed that "Horn Loaded, Ported" comes under the Horn Loaded filter but not the Ported filter - should it be under both? Also, the Active and Passive filters in the Filters pop-up do work but there is not a visible column within the table that details that information - should that column be visible? Thanks for all the hard work behind this site!
  2. MemX

    Paradigm Persona Sub

    I've not been super-impressed with JL subs when really pushed hard - I've heard a couple at demo days, including that 2x12 (??) thing that's very expensive, and they get a bit... flappy... at very high volumes. Not to say that they sounded bad - I guess they were doing well not to be killing themselves when really cranked - but they just sounded a bit 'flubbery' rather than the tightly controlled stop-start of a large system. That was at high volume in a large (20x20?) room, though, with no back wall and an open stairwell, so I guess that as a small-box solution, they do offer attractive packaging and decent sound quality up to the point that they are being asked to achieve the impossible due to their output limitations (which I guess is the same for all subs, really). So... I'm not really sure this post is very helpful at all lol
  3. MemX

    The Bass EQ for Movies Thread

    Hang on... I just realised that my sarcasm detector might be broken today lol Was the original post about spaceships slowing down a sarcastic comment about how they don't do that in real life, but do do that in the film? In the same way that there is no sound in space yet all spaceships must rumble by and explode loudly in films?
  4. MemX

    The Bass EQ for Movies Thread

    Wait... what? I thought that any object travelling on a specific course in space would continue unabated unless an external force acts on it? (Isn't that one of Newton's laws? Or Einstein's? I kind of missed a few Physics lessons at school due to discovering the local club / a girlfriend / alcohol... lol)
  5. MemX

    Porting the room - flat to 6hz

    Could the mineral wool be acting as the 'dead' wall in a SBA, reducing destructive cancellation? Or are the wavelengths too long at that depth for that to happen? (IIRC constructive-only interference starts to occur once you get down past 30Hz??)
  6. MemX

    Ricci's Skhorn Subwoofer & Files

    Would one or more of the Bossobass amps be suitable if the Clone amps are not up to it? http://bossobass.com/Bossobass.com/Home.html There is a description of the A14k on the Raptor page: http://bossobass.com/Bossobass.com/Raptor Systems.html but the Amplification page itself is giving me a 404... http://bossobass.com/Bossobass.com/Amplification.html I've not seen @Bossobass Dave for ages on here, though - is he still going? Is he still selling kit??
  7. Awesome work on the thunder! All the recordings I have are old and seem to roll off massively at the bottom end, so when I finally sort a computer out for home, I'll have a listen :)
  8. MemX

    Small yet Mighty. The tale of the 12's

    Nice! That grill cloth is art
  9. MemX

    Xarion Laser Acoustics

    Awesome tech! The changes in wavelength of light / refractive index of air must surely be vanishingly small! Pretty amazing stuff - us humans are pretty clever It's a shame we mostly seem to use it designing things to kill each other... Looks like it's only specced down to 10Hz, though - @Bossobass Dave won't be impressed lol
  10. So, joy of joys, I'm going to have to move house in the near future. Currently in a first floor apartment, I got my (handle-less, veneered) 11 cubic feet, dual-18" subs in using sheer grunt, with me and a friend taking bottom corners and walking them up the stairs. IIRC they weigh about 15-16' each, and they have nothing to actually grab hold of to move them (bad planning on my part!). However, since then I've slacked off from the gym for ages and am now weeeeeak, and I fear we'll drop them down the stairs and/or do me an injury if we attempt to carry them out. Has anyone got any recommended moving techniques / equipment? The missus alerted me to these, which are apparently rated up to 650lbs(!): http://www.uscargocontrol.com/Moving-Supplies/Moving-Straps-Mover-Bands/Teamstrap-NEW-IMPROVED-Furniture-Moving-Straps but just one single strap underneath seems to invite whatever you're carring to slide out to one side, especially when it's 200lbs+, very dense and very smooth-surfaced... The only other option appears to be one of those stair-climbing trolleys: https://www.amazon.co.uk/Costway-Wheel-Truck-Trolley-Climber/dp/B07676YF5S/ https://www.amazon.co.uk/capacity-trolley-extendable-OT1001-REVIEWS/dp/B00Y3PAD1O/ but the main issue with those is that the subs are too wide to fit down the stairs sideways, meaning only about a third of the box is actually on the bottom tray when it's on it long-ways, making it very unstable and near-impossible to get it leveraged off the actual ground! Perhaps they would be ok with the box tightly strapped to it?? Any recommendations very gratefully received!
  11. MemX

    Moving massive / unwieldy subs?

    LOL No, it doesn't but thank you for replying! In the end we found some fairly thick carpet and slid it under the subs, then slid them down the stairs with a man underneath them to hold the carpet in place and control the speed of descent. Worked pretty well! Still got a few dings here and there because, well, it was inevitable, but hopefully they will come back out of storage without too much damage!
  12. MemX

    Motional feedback

    Welcome to the forum I don't think anyone on here has a servo system, but I have a PPSL system, which I recall someone on diyaudio forum saying has a similar 'clean' sound.
  13. MemX

    Moving massive / unwieldy subs?

    Awesome replies, thanks chaps IIRC I bought one of these when I got the subs: https://www.amazon.co.uk/Charles-Bentley-Pneumatic-Industrial-Warehouse/dp/B01N9NW0QX/ but we couldn't get it to work - I think the lack of straps was the issue (we couldn't stabilise the boxes by hand, which is not really a surprise, d'oh!) and it also just about ripped the pneumatic tyres off it lol If I actually pump the tyres up a bit more and then order some straps, hopefully that combination will work... An automatically stair-climbing one sounds amazing, though - that is genius!
  14. MemX

    Moving massive / unwieldy subs?

    Many thanks for the replies, chaps Good idea on the rubber gloves, didn't think of that! I think (hope) they are pretty good in terms of weight distribution - drivers being in the centre (side-to-side, top-to-bottom and front-to-back) means the weight is concentrated in the middle, but that doesn't make them any less heavy lol I'm somewhat loathe to remove the drivers - James said they were a massive PITA to fit due to screws being right up against the back of the slot, plus I fear stripping the holes, and it hurts my head thinking about getting them wired in again correctly... I think I will look at wheeled trolleys... perhaps something like this (he says, hoping that trying to hold up all the weight through the handles won't pull the bolts out of the base when attempting to get it down stairs gently...): https://www.amazon.co.uk/Charles-Bentley-Platform-Warehouse-Delivery/dp/B003U9P9FE/
  15. Looks like the BladeRunner 2049 soundtrack is good for 10-15hz http://www.avsforum.com/forum/113-subwoofers-bass-transducers/2763785-ultimate-list-bass-movies-w-frequency-charts-110.html#post55019164 so hopefully the film will also be decent! I'm also liking the look of Train to Busan: http://www.avsforum.com/forum/113-subwoofers-bass-transducers/2763785-ultimate-list-bass-movies-w-frequency-charts-110.html#post55027082 Seems like it has low overall levels but some big, full-bandwidth hits?
  16. That looks pretty decent - 20Hz filter is better than a kick in the teeth and it may be a potential contender for BEQ...
  17. MemX

    Josh's new cover photo!

    Thanks to all those involved in upgrading the site, I know it's a PITA!
  18. I guess it must be incredibly difficult to record, needing massive dynamic range capabilities, so that it can capture the delicate bird song and gently chatting of the public in the viewing area, but then deal with what must be, what, 120? 130? 140? dB of noise down to single digits. The only time I've been to America (many years ago) we were doing the Florida thing and they had a launch scheduled - we were thinking about going to view it but decided not to, and it was cancelled in the end anyway. Would have been awesome to see and feel!
  19. I bought that space shuttle blu ray, the one narrated by Leonardo di Caprio - the shuttle launch is a ruined, clipped, utterly flat-topped mess - I was concerned for my speakers!
  20. Ok, I neeeeeed to invite myself round for a listen at some point LOL Did I hear someone say "UK GTG"?
  21. So you're saying you're in the UK and have a BossoBass Raptor system.... ? Are you receiving guests?
  22. MemX

    Real life sounds - instantaneous loudness

    I know it's completely subjective, but I find that the radio and other 'flat' tracks with little dynamic range are very wearing to listen to - sometimes I have to turn off and swap to some classical music, simply because it seems to be a lot better recorded, with a much larger dynamic range, and gives my ears a break. It's much the same with films that are the victim of the loudness wars - I'm up and down on the volume controls throughout Star Trek: Into Darkness, whereas something like Oblivion is set-and-forget. What I find most interesting is that if one picks up some CDs from back in the 80s, such as those listed on that link I posted earlier, they do have dynamic range and are recorded a lot quieter than modern stuff - I presume because the loudness wars hadn't started and people actually just recorded stuff how it was played. So, despite the audio systems being (I assume) a lot lower in quality than the stuff one can buy nowadays, they actually had the quality of recordings and had to exercise their own control over their volume knobs.
  23. MemX

    ZOD Audio M.A.U.L. Test Results and Discussion

    @Ricci's idea of 'nothing special' differs somewhat from my own LOL If you just want to get rid of all that old junk, I can find a home for it
  24. MemX

    Real life sounds - instantaneous loudness

    Only very few tunes seem to have Dynamic Range over 30, going from this database! http://dr.loudness-war.info/album/list/dr-max/desc