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Overnight Sensations quick & clean Woofer upgrade Post worthy IMHO

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  • twistgripper
    commented on 's reply
    Unbiasedsound: I am not hearing an emphasis or reduction at any freq. level (except mid-bass is lower), it is more like de-coloration, removal of something the original woofer was blocking - it sounded un-natural/muffled slightly in the midrange, across quite a freq range. now it is just better clarity, more live sounding, not louder or quieter. I know ears are imprecise measuring tools, and seeing the graph would be interesting, but the most important thing is I took speaker that I found harsh/muddy/unnatural and made it enjoyable again..and I believe most other OS owners would find the same.

  • twistgripper
    commented on 's reply
    Fpitas: I don't have the equipment.

  • Unbiasedsound
    commented on 's reply
    When I first started I never realized how important a flat frequency response is in building speakers. The flatter the response the more accurate/balanced the speakers will sound. When there is dips and peaks it will emphasize certain frequencies and it can sound good on certain tracks that emphasize those frequencies but it will make other frequencies sound weird due to being unbalanced. Its basically coloring the sound for a specific sound signature.

    For example if you have 2 identical pair of speakers but on one pair I boost the 2k region just so slightly you would say its vocals sound clearer then the other pair because of the boosted 2k but the downfall is that all other instruments not in that frequency range will change and be effected by that 2k boost.

  • fpitas
    commented on 's reply
    Yet, we would say you haven't finished the job. Why is it better?

  • twistgripper
    commented on 's reply
    Like many I have a playlist I have curated for a long time, that tests many natural instruments, voices, musical genres - and I found across the board everything sounded better to me, so for that reason, I feel this is more neutral/natural/live sounding - an improvement overall. I spent the better part of an afternoon comparing, not just a single track. I would not have shared without really critically comparing the 2.
    Last edited by twistgripper; 02-18-2022, 05:47 PM.

  • fpitas
    commented on 's reply
    I don't get it. All you have to do is measure them. It's not like open-heart surgery.

  • twistgripper
    commented on 's reply
    Yes i'm not dismissing the value of measuring, but i just don't have the equipment, space, time etc...and this was easy to try so I did...had no expectations and was ready to return the micca. I've compared the OS's to several other speakers now and I consistently find the OS's a bit muddled in the midrange, so I shared on the assumption that many other OS owners may find the same.... this is a value priced/entry level speaker so nobody is likely to invest a bunch of time and experimentation to make measurable improvements. This is a quick and dirty hack one can try easily and cheaply, and get a refund if you don't like it.

  • twistgripper
    commented on 's reply
    Fair enough! But....Even Paul Carmody said the following about his designs on his "manifesto" page:

    "If you are looking for speakers with razor-flat response and complete absence from distortion, you may want to look elsewhere.....The science of speaker design is only half the battle...the other half is art. And taste in art is subjective...I don't expect everyone to like them. I do, however, believe that more people will prefer my designs to something that's textbook perfect because I design with a musical ear. "

    So even the designer is saying he feels what your ears tell you can be as important as the numbers, maybe more important.

    This is an entry level speaker with some very affordable drivers in it...it is far from perfect as stock. For all we know he could give this a listen and agree the mod sounds better!

    I can only say for my ears, it definitely sounds better in the midrange - I'm betting it would for others too, if they are unhappy with the clarity of the mids on this speaker. One does not need numbers to tell you a sound is more pleasing and enjoyable. I thought I was pretty clear about this being subjective...but I'd definitely be curious and find it interesting if someone were to compare the numbers with measurements. I doubt it would be flatter, there may be some peaks and dips for all I know. But isn't listening pleasure the most important thing here?

    (Note to Paul C if you are reading this- hope you take no offence, I'm betting you wouldn't - and would be curious to know what you think if you cared to try this out!)

    I went into this knowing theres a good chance it would NOT be an improvement. I had no bias, was fully prepared to return the micca. but i like it enought to keep it and leave it modded.

    Its cheap to try and if you don't like it - buy from amazon and return it or just re-sell the Micca. Virtually no risk to try it.

  • twistgripper
    commented on 's reply
    Why double? both the hivi and micca drivers are 8ohm with similar sensitivity ratings... I found the volume to be pretty much the same...

    I did contact Micca to see if they would send me the specs for the 4" driver, not holding my breath waiting for that one though...
    Last edited by twistgripper; 02-18-2022, 05:26 PM.

  • fpitas
    replied
    Yeah, if you're enjoying that's 99% of the battle. But like wogg inferred, arbitrary EQ can make some instruments or voices stand out etc. That may or may not help a given track. Generally, a good design strives for neutrality, so all tracks sound good.

    Leave a comment:


  • fpitas
    commented on 's reply
    Lol ok, fair enough Bill.

  • wogg
    replied
    Don't take comments too harshly... there's a lot of value in simply enjoying the sound of your setup and work and who are we to say what you enjoy. So keep that at the top of your mind.

    From an engineering perspective which is exactly what drives the "measurements or it didn't happen" position, what you've likely done is effectively applied an EQ to your speakers due to the change in woofer without modification of the crossover. No different than just putting an EQ in line before your amp and tweaking it to your liking. The woofer may have less breakup distortion than those HiVi originals, and the bass alignment and crossover region are most definitely different than the original design. There's no way to know what you're really hearing objectively without measurements.

    Back to the top... if you love it though, awesome!

    Leave a comment:


  • billfitzmaurice
    commented on 's reply
    Actually it's pictures or it didn't happen...pictures of the measurements.

  • fpitas
    replied
    Yeah, this is a "measurements or it didn't happen" kind of crowd.

    Leave a comment:


  • lunchmoney
    replied
    Glad you're digging how it sounds.... but unless the center channel you started with has exactly double the volume of one of the OS's, your result will most certainly have issues with bass response. compared to the original OS's. The same could be said with port dimensions, crossover points, and a whole host of other parameters. For these reasons you're unlikely to garner much enthusiasm from this crowd for this being an "upgrade". But again, glad you're liking the sound

    Perhaps if you could track down the driver specs, folks here might be able to help you design a new crossover, port dimensions, etc.

    Leave a comment:

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