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Pretty Persuasions - InDIY Coax Build Thread

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  • KEtheredge87
    replied
    Originally posted by JavadS View Post
    ......bringing response and phase inline transformed the sound of the horn from honky and bright to smooth and balanced.
    Hey Javad... This question may border on the subjective, but can you help describe "honky" a bit more in this context? I've heard of horn honk before, but never really been able to associate that with a sound. It just makes me think of an old cartoon bicycle horn or something.

    Thanks!
    Keith

    Leave a comment:


  • JavadS
    replied
    Originally posted by EarlK View Post
    Nice! Javad, One question; Do you use amplifiers that are stable down to such a low impedance ( ie 2 ohms ) ?

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  • EarlK
    replied
    Nice! Javad,

    One question;

    Do you use amplifiers that are stable down to such a low impedance ( ie 2 ohms ) ?



    Last edited by EarlK; 01-24-2018, 11:23 AM.

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  • dcibel
    replied
    Limiter is just a different compressor, but yes we are in agreement here. Anyway, turn the gain knob down a bit so the recording can contain some dynamic range. Don't worry, I have a gain knob of my own to turn it back up on my end ;)

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  • xmax
    replied
    The closest thing I worked on to Dead Kennedys would be Erase Errata, but I'm no longer a recording/mix/mastering engineer.
    What you (and I) have a problem with is digital limiting, not compression.

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  • dcibel
    replied
    Originally posted by xmax View Post
    I'm sure you heard a song in the last 24 hours my filters were involved with.
    Ah, you must be the one who mixed my SNFU and Dead Kennedys albums . Please do us all a favour and turn down the compressors so our hifi systems can actually reproduce the dynamic range that they are capable of.

    Sorry Javad, I'll stop invading your lovely speaker thread now.

    Leave a comment:


  • xmax
    replied
    ​These are absolutely beautiful cabinets and I love the classic looking wide baffle, I think people are finally getting
    away from the belief the baffle has to be very narrow or "small" for the speakers to have good imaging. I deal
    with wider large baffles with some of my designs and the first comment I always get from people is the imaging
    is like a "movie" or having the "artist in the room with you".


    The curves are looking nice! Sorry I got you mixed up with another cat on the amp comment. I don't mean to offend anyone I have no
    way of knowing everyones level of XO design and I'm trying to be informative for all readers.
    One of the reasons I mentioned the difference with DSP and passive, it seems to be kind of a lost art,
    but when modeling crossovers there is a lot of different classic "ratios" with just
    second order like Bessel, Butterworth, Linkwitz Riley. I try to take advantage of this aspect whenever
    possible. (people seem to really hate talking about anything textbook on this forum) I noticed when trying to mimic this
    with DSP it gets it completely wrong. Somebody will say something about pure resistive loads or some other crap,
    these observations were made with ribbon tweeters or drivers with some sort of impedance compensation.
    Regardless of what others think I do believe there are advantages to keeping cap and coil ratios within
    classical ratios to a certain extent to prevent "ringing" and other nasty artifacts. If nothing else it's
    a hell of a starting point. If you don't believe me just do some calculations with say Zaph or
    troelsgravesen.dk designs you will start to see they are more than not "textbook" especially
    in the high-pass section. I don't think it is all coincidence...

    Leave a comment:


  • JavadS
    replied
    Last edited by JavadS; 01-22-2018, 02:18 PM.

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  • JavadS
    replied
    Originally posted by xmax
    On another note, I'm sure you are probably aware of this and I imagine you are not going 48dB slopes in the passive domain. My experience with the mini dsp; the transfer function is nothing like the passive version of the same filter, E.I. a Butterworth filter will have no bump at Fc and more obviously the phase tracking is completely different. I only found it useful for acoustic center alignment and roughing in how low tweeters could go before sounding like screwdrivers in ​your ears and where cone break up could be avoided. Beautiful builds!!!

    Leave a comment:


  • JavadS
    replied
    Originally posted by xmax
    Beautiful! The frame of that mcm woofer looks identical to the Tang Band W8-2096. What drivers are on the waveguide in the other speaker? Any luck with that blown amp?

    Leave a comment:


  • xmax
    replied
    Too bad, I'm going to help you whether you like it or not!

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  • dcibel
    replied
    You might be surprised to hear when you come over that I already have a clean coherent natural sound and don't actually need your help.

    Leave a comment:


  • xmax
    replied
    Why? I just use off the shelf textbook filters designed for a resistor of 8 ohms with
    exactly a Fc 3K for both drivers, anybody can do it.

    No, I want you to go listen to some of my speakers. You might be pleasantly surprised what can
    be done with filters designed for clean, coherent, natural and accurate reproduction.

    In all seriousness I was offering my personal experience just in case the OP had not compared
    the transfer function between the mini DSP and passive filters, I was actually quite surprised how much
    easier it was to get flatter responses taking advantage of say the transfer function of Butterworth
    alignments, playing with the Q and or minimal shaping circuits. Some of the dark magic that is
    passive XO design that is not possible with Mini DSP (I don't care how much you EQ it, my opinion).
    Because I have been doing it the old fashioned way for so long

    Leave a comment:


  • dcibel
    replied
    Originally posted by xmax View Post
    Just out of curiosity what City are you in?
    You wanna come over and learn how to design a filter?

    Leave a comment:


  • xmax
    replied
    Ah yes you are correct, it just looks very similar. from memory (clearly not very good)

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