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Type: Posts; User: Candisa

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  1. Yup, standard procedure when I simulate...

    Yup, standard procedure when I simulate something: excursion is well within limits with power and filtering applied.

    By the way, I visited the local DIY-shop and apparently, there are only 2 sizes...
  2. Well, the reduced output above 25Hz is what I'm...

    Well, the reduced output above 25Hz is what I'm worried about: by shortening the ports a bit, or using slightly bigger ones with the same length, the output above 25Hz is a little better and the...
  3. Well, we can't do measurements at the moment,...

    Well, we can't do measurements at the moment, since we don't have an RTA. We're planning to tune as much as possible by simulation and ear.
    We're planning to buy an RTA-kit later to check how far...
  4. Accidental uncalculated BP4 -vs- calculated un-ideal BP4

    Hi,

    As you can see in the project-thread (see clickable signature), we're using Dayton Audio IB 15" subwoofers in our current Saab 900 build.
    But we don't put them in the rear-deck or right...
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    The trick of letting a 6.5" (or bigger) midwoofer...

    The trick of letting a 6.5" (or bigger) midwoofer play beyond 2kHz off-axis well, is to get an amp + midwoofer combo that still gives enough output off-axis a bit beyond the LPF you'll give them so...
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    If you're mounting the DSP under-dash anyways,...

    If you're mounting the DSP under-dash anyways, can't you just as well get an all-in headunit like the Pioneer P99 or a Clarion HX-D2/DRZ9255?

    You'll still have plenty of tuning options for this...
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    Damn, that's high... I'd say: - either keep...

    Damn, that's high...
    I'd say:
    - either keep the headunit and get a pair of tweeters with good low-extension (Scanspeak D3004/602010 or R3004/602010 for example)...
    - or get a 4-ways capable...
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    If the midrange-tweeter x-over frequency is set...

    If the midrange-tweeter x-over frequency is set high enough, TA on the tweeters isn't that important (the human ear isn't very sensitive to pathlengths at very high frequencies), but if the...
  9. Well, we happen to have an AudioControl ESP-3...

    Well, we happen to have an AudioControl ESP-3 laying around...

    But I don't understand what I would have to do with it to solve the possible lobing issues in a pair of horizontal 2-speaker arrays?...
  10. This stuff is way over my head right now, and...

    This stuff is way over my head right now, and probably too complicated to do in this car (this install is meant to be "KISS"), so I guess it's no horizontal midrange-array for us...

    We'll see how...
  11. IF we would ever do this this way in this...

    IF we would ever do this this way in this install, it would be with a passive for the tweets + first set of mids, and with L-pad attenuators for the tweeters.

    Active splitting of the tweeters and...
  12. I guess we could do this, but slightly different:...

    I guess we could do this, but slightly different:
    CH1/2: tweeters + mids
    CH3/4: mids
    CH5/6: midbass
    CH7/8: sub
    And use a passive crossover network to split the tweeters from the mids that are on...
  13. Well, the main reason for doing this is we really...

    Well, the main reason for doing this is we really want to do something based on the HiVi B3S one day.
    This horizontal-array thing in the car seamed like a good idea to create an opportunity, but I'm...
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    Small update

    A small update:

    Trunk-build (click to enlarge pics):
    367
    368
    369

    The left part of the structure is done: a "sealed box" with a hole in the top to let the subwoofer play trough the rear-deck...
  15. I'm affraid it won't work out after reading all...

    I'm affraid it won't work out after reading all this...
    We do not have the processing power to individually time-align each single driver: We use a Clarion HX-D2 headunit, which has 8ch DSP, but...
  16. Horizontal array vs lobing/interference-issues

    Hi,

    Since we're using the HiVi M8a's as midbasswoofers, we were thinking about using the HiVi B3s as a midrange instead of the TangBand W4-1337.
    It seems to be a nice driver for the 250-5k range...
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    Thanks people, it looks like it just can't do...

    Thanks people, it looks like it just can't do what I want it to do.
    I do not want to make music with little to no bass sound like it's gonna blow my car apart, I want music that already sounds like...
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    In other words: It's not worth spending 50,-...

    In other words: It's not worth spending 50,- ($65,-) on it to fool around with?
    Does it decrease sound-quality (by increasing noise or THD) when it's turned down?
    I wouldn't use it in front of...
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    Chad: I already answered in that other place ;) ...

    Chad: I already answered in that other place ;)

    benny: I know I will need enough cone-area and excursion to hit these low notes. I do not want these to be 120+dB, so the amount of power needed...
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    Would an AC Epicenter be useful for me?

    Hi folks,

    I am still dreaming of building a very complicated system with stage-enhancement (using an AudioControl ESP-3 and a center speaker) to widen up the stage, but with a focused, non-smeared...
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    That's it for now! People that have followed our...

    That's it for now!
    People that have followed our threads might remember a few things that didn't make it in this install:
    - Fountek NeoCD1.0 ribbon tweeters --> They are too big to mount easily...
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    Although the trunk of a Saab 900 classic is quite...

    Although the trunk of a Saab 900 classic is quite roomy, it isn't as spacious as we thought...
    I figured that out after building the bottom-plate and subwoofer-"cabinets"... The amp just won't fit...
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    We started by making a sketch of how we would do...

    We started by making a sketch of how we would do the trunk-area.
    The text in black means: "latch that hides the spare tire, tools..."
    The text in blue means: "space for amps etc..."
    360
    (click to...
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    Xenia's Saab 900 classic

    After more than 1 year driving around in the money-pit called a 1993 Saab 900 classic (3dr Combi-Coupe), we hope the car will become reliable one day, so we decided building an install in it:

    The...
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    Don't worry, the Saab will be tuned to match your...

    Don't worry, the Saab will be tuned to match your taste (which is approximately the same as mine, apart from the lowest half octave).
    Afterwards, I can always make an extra setting with a little...
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