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Showing content with the highest reputation on 03/10/2019 in all areas

  1. 1 point
    There's no question that the BEQs posted to AVSForum cover a wide range of content, which also includes films that IMO didn't need them to begin with. I have a few reasons for being less than enthusiastic about them. For one, headroom requirements are a total unknown, and many appear very aggressive and likely to overload my system. For another, I strongly believe "first, do no harm" as far as the soundtrack is concerned. Ideally, filters of any kind should only be used when they are fundamentally part of the sound. The point of the BEQ, IMO, is to precisely reverse the degrading filters in place, which is not at all the same as making the PvA look perfectly smooth down to 5 Hz. Along these lines, the AVSForum BEQs appear to be to have been EQed quite aggressively for a straighter/smoother, and I strongly suspect that this has degrading consequences. People forget that the PvA data is aggregated and often reflects the contribution of many different effects which may only appear smooth "on average". So trying to make it look perfectly smooth, especially using peaking filters, is likely to screw up the sound. Related to this is the fact that the BEQs are usually made based on a sum of channels PvA, and many mixes have very different PvAs for each channel. I think only a couple BEQs posted here specify the same filters on all channels. The issue with doing this is that it won't really "correct" anything at all. Every channel will be wrong in a different way. Each is likely to come with new resonances that weren't on the soundtrack before. I don't want new resonances. The main reason I like BEQ is because it gets rid of the annoying resonance at the filter cut-off. The experience with a truly neutral bass spectrum is simply marvelous. Transient response is impeccable, and the bass delivered is simultaneously tight and firm. It moves the listener. Any resonances spoil that magic to a great extent. I also appreciate that @maxmercy does a kind of quality check and doesn't post BEQs that didn't improve anything. Very often the sound design just isn't good enough or consistent enough to make it worth it. Often the problem may be inconsistent use of filters in the sound design itself rather than anything to do with how the film is mixed. Related to this, it's possible for a mix to use dynamic filtering that respond to available headroom. Such a mix might be full-band for lower level sounds but cut off at 30 Hz for louder sounds. I suspect this may have been done in Jurassic World but don't know.
  2. 1 point
    All speakers have inherent differences in power handling vs frequency. Its assumed that any serious outfit would work out limiting or amplifier matching depending on content/ use, amps and drivers for their individual case. It depends quite a bit on all of these factors. I can say that with my pair I've beat on them hard and haven't had any issues but I'm not banging off the clip / limiter for 12hrs with extremely compressed content either. YMMV. If you have the ability to do true long term power averaging I'd set it to somewhere between 500-1500w depending on drivers to be truly safe but that is a absolutely huge amount of average power with typical music crest factor. Way more than it seems. If you are matching the amp rating to the recommended driver AES power rating range and not exeeding it or running consistently into the limiter it shouldn't be a concern. Running a 9kw rated k20 channel for all it is capable of into a single 21ipal loaded Skhorn with a driver power rating half that wouldn't be recommended. Some common sense is needed. Running about 2 to 5kw of amp per cab depending on the drivers used and application is about right. The amps would be clipping or limiting the peaks well before the average power is reached with normal music.
  3. 1 point
    I've seen it, even posted in the thread. There are many ways to fold this style of cab up. There are a couple of other ones floating around also. Other than that I try not to comment on other people's designs too much. Many times they aren't ever built, or if they are there is never any reliable objective results shown. Who knows. In other news I have picked back up on working on a single driver version finally. I've basically got the cab layout and fold nailed down. I just need to decide on bracing and hatch then put the models and print together which takes a bit. Hopefully I'll have it done by the end of the month.