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NewportDJ Drew

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Viewing 15 posts - 106 through 120 (of 371 total)
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  • April 29, 2013 at 9:25 pm in reply to: any good (preferably free) WAV to MP3 converters out there? #39779
    NewportDJ Drew
    Participant

    cdex is the fastest and it’s free.
    http://cdexos.sourceforge.net/
    Its a cd ripper but also converts wav to mp3.

    April 26, 2013 at 11:33 pm in reply to: Subwoofer Choice – Advice Needed #39682
    NewportDJ Drew
    Participant

    The “loudness’ button an amp increases bass at low levels. It ‘shouldn’t’ work once the volume knob is turned up. Why does the bass need to be turned up when listening levels are low?
    An equal loudness contour graph will show you that you for bass to be perceived as loud as mid range, it has to be, well, louder for our ear to hear the bass at the same loudenss. (eg 100Hz would need to be `45dB SPL. twice as loud as 1k @ 20 dB SPL to be perceived as same as same volume). So a loudness button raises the level of the bass so we can hear it at low listening levels.

    http://www.extron.com/company/article.aspx?id=loudnesscontrol_ts is a good read about ‘that’ button.

    April 26, 2013 at 10:40 am in reply to: Subwoofer Choice – Advice Needed #39661
    NewportDJ Drew
    Participant

    Yes. IMO, Better to go for an 18+. My reasoning, bigger surface area= lower frequencies can be reproduced.

    April 25, 2013 at 8:37 am in reply to: Subwoofer Choice – Advice Needed #39606
    NewportDJ Drew
    Participant

    This a graph of a shared frequency shelf crossover that I mentioned in my last comment. The numbers are not relevant just the graph plot.

    April 25, 2013 at 8:24 am in reply to: Subwoofer Choice – Advice Needed #39605
    NewportDJ Drew
    Participant

    From what I understand any HPF or LPF in most powered speakers should not effect what frequencies are in the signal flow path from one speaker to another and nor should they. If you have crossover frequency controls then yes, you need to set them to be as close to exact points as you can. eg if you HP on the tops at 100Hz then LP on the sub at 100Hz. I know its almost impossible to do it to an 100% exactness, but the closer you get the better!

    A trick to avoid needing exactness is to create a 10-20 Hz ‘frequency shelf’ that both sets of speakers share, eg make the speakers 110 and sub 120.

    April 25, 2013 at 4:00 am in reply to: Subwoofer Choice – Advice Needed #39593
    NewportDJ Drew
    Participant

    So I just had a look at the specs of the Cerwin you mention. Nice. I would personally bypass what they call the hpf (I think it is superfluous). I would just use the variable sweep, as my experience has shown that I have achieved best results in the 80-120 Hz range, depending on venue. (my default starting position is 100Hz and more often than not it is my ‘sweet’ spot)

    April 25, 2013 at 3:25 am in reply to: Subwoofer Choice – Advice Needed #39592
    NewportDJ Drew
    Participant

    Next thing is if all the speakers are active (powered or self amplified) you will want to ‘daisy chain’ the sub into the existing speaker system. Just run a lead from the line out connector on the back of one of your ‘top’ speakers on one channel to your line in on your sub. Most powered speakers either sub or mid/top have an balanced line output available (Sometimes called ‘Thru’)
    (You could also run to your sub then to tops- doesn’t matter which way it goes).

    Subs don’t really need a stereo ‘friend’ as bass is generally omni directional and most likely from your description of what you are adding one for, will add enough bottom end from a single stereo channel.
    Aesthetically, a sub under each of the tops looks way more awesome tho!

    Just as an FYI….If one was running a passive system, you would run an active crossover to separate amps for subs and tops. Note you don’t need a special amp to run the speakers or subwoofers (an amp will just faithfully amplify the frequency/frequencies that is/are driven into it) but they need to be separate.

    For $1000 pretty much any brand you get will do a fine job.

    April 25, 2013 at 3:19 am in reply to: Subwoofer Choice – Advice Needed #39591
    NewportDJ Drew
    Participant

    First things first. A high pass filter conjours incorrect assumptions and in fact does the opposite of what the name suggests. It allows high frequencies to pass through untouched while filtering or blocking the lower frequencies. So what you want is a LPF (Low pass filter) a variable one I think. The next question is how low? Personally i think 100Hz and under. Most subs will reproduce at best, down to about 40Hz, maybe 30, but it is hard work to get a speaker to reproduce down to 20Hz as the wave forms are so freaking big. Most run optimally at the 50-140Hz range.

    April 20, 2013 at 10:12 pm in reply to: Internet radio broadcasting stations? #39421
    NewportDJ Drew
    Participant

    also try mixLR

    April 10, 2013 at 9:57 pm in reply to: Yamaha Stagepass 500 with powered Sub? #39021
    NewportDJ Drew
    Participant

    Guessing….. Not wired correctly.

    March 28, 2013 at 8:06 pm in reply to: Question about DJ Lighting. #38482
    NewportDJ Drew
    Participant

    I have two main lights (a rage and a storm bird) that sit atop my speakers, I have an led ‘net’ that goes at the front of my table, and an led snake that wraps around the perimeter of the net. set up adds all of
    5 mins to my load in time and they look great.

    March 26, 2013 at 9:00 pm in reply to: Ear buds and hearing damage #38373
    NewportDJ Drew
    Participant

    Here is a guide to SPL dB levels (at the ear) and how long before damage occurs.
    Note: Rule of thumb-For every 3db increase listening time is ~halved.
    115 dB 0.46875 minutes (~30 sec)
    112 dB 0.9375 minutes (~1 min)
    109 dB 1.875 minutes (< 2 min)
    106 dB 3.75 minutes (< 4 min)
    103 dB 7.5 minutes
    100 dB 15 minutes
    97 dB 30 minutes
    94 dB 1 hour
    91 dB 2 hours
    88 dB 4 hours
    85 dB 8 hours
    82 dB 16 hours

    March 26, 2013 at 8:55 pm in reply to: Ear buds and hearing damage #38372
    NewportDJ Drew
    Participant

    115 dB 11.2 Pa 0.46875 minutes (~30 sec)
    112 dB 7.96 Pa 0.9375 minutes (~1 min)
    109 dB 5.64 Pa 1.875 minutes (< 2 min)
    106 dB 3.99 Pa 3.75 minutes (< 4 min)
    103 dB 2.83 Pa 7.5 minutes
    100 dB 2.00 Pa 15 minutes
    97 dB 1.42 Pa 30 minutes
    94 dB − − − − − − − − − − 1.00 Pa − − − − − − 1 hour − − − − − − − − − − − − − −
    91 dB 0.71 Pa 2 hours
    88 dB 0.50 Pa 4 hours
    85 dB 0.36 Pa 8 hours
    82 dB 0.25 Pa 16 hours

    March 7, 2013 at 5:50 am in reply to: Converting a .wav file to a 320kbps mp3 #37690
    NewportDJ Drew
    Participant

    If you don’t want or need to edit your wav file then cdex is also a good free option. ( I use audacity 98% of the time tho)

    March 7, 2013 at 5:45 am in reply to: Calling all Mobile DDJ's…. What's in your "box"? #37689
    NewportDJ Drew
    Participant

    I have a about 4K. They are arranged into virtual crates ( eg decades) and I love that I don’t have to leave any at home. I also love that when I get a request I can search my entire catalogue and find a track instantly.

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