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Type: Posts; User: durwood

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  1. Replies
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    Agreed. Once you start trying to cram lots of...

    Agreed. Once you start trying to cram lots of cone area through a much smaller opening, now you are in bandpass territory. ;)
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    Not brand bashing here, but a good majority of...

    Not brand bashing here, but a good majority of the Focal line is basic medicore stuff for what you were paying for. Some of their amps were single layer boards, basic design, lots of their drivers...
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    Bingo^ Someone explain to me in very...

    Bingo^



    Someone explain to me in very simplistic terms how mobile audio is really mobile audio if you don't run the car under normal operating conditions. Yes I am well aware ALL "SQ" comps are...
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    It has nothing to do with driver size. it has...

    It has nothing to do with driver size. it has everything to do with the wavelength though. Sometimes I think people believe the switch between ITD and ILD is on/off. It is gradual.

    Also, there is...
  5. Actually that stuff is fairly cheap...what you...

    Actually that stuff is fairly cheap...what you saved is your time and sanity, which is costly. If you have the ability, it is always interesting to measure the noise floor before and after when you...
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    I have to agree with Chad and minbari. The car...

    I have to agree with Chad and minbari. The car electrical system is designed around portability, low battery voltage but high current capability. Home is designed around high voltage lower current....
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    My thought process is that if you can make the...

    My thought process is that if you can make the transition from the side glass and the a-pillar/windshield gradual instead of abrupt with multiple edges that will reflect, then slight angling within...
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    No doubt. If you noticed, I refrained from my...

    No doubt. If you noticed, I refrained from my usual long drawn out promotion of monophonic type setups this time around because this :banghead: and this :poke: hurts after a while.
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    I think I would agree with what whiterabbit is...

    I think I would agree with what whiterabbit is saying.

    If I were going to put tweeters in the sails, I would build the pods so that they blend as seemlessly to the window and the a-pillar panel...
  10. Also, you might notice most cars already have a...

    Also, you might notice most cars already have a layer of MLV on the firewall, but there is probably none in the trunk. It should be fairly easy to put MLV in the trunk. IF you want to go full luxury...
  11. Road/tire noise is mostly airborne. You would...

    Road/tire noise is mostly airborne. You would need a good barrier/blocker to attenuate airborne noise. It is especially bad in wheel wells due to the shape of the well that amplifies it. Chances are...
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    Why do you need digital input to reduce the noise...

    Why do you need digital input to reduce the noise floor, balanced already does that? Just convert the balanced signal as close the processor as possible and call it a day. Art Cleanbox is supposed to...
  13. 0.35 +/-.07 :D The real question is, will this...

    0.35 +/-.07 :D

    The real question is, will this drastically alter the cutoff of the boxed speaker and is it more significant than say a 15dB FR alteration caused by room modes?




    ...
  14. T/S specs help you know how to design the box...

    T/S specs help you know how to design the box size and what the effects are. They can easily tell you where the low end rolls off and by how much. This is not minor stuff. This is speaker building...
  15. Well I don't think Clarion for example would be...

    Well I don't think Clarion for example would be lying about a measly 5.25mm xmax figure (sounds reasonable given the construction). Now if they were claiming in the range of 15-20mm, I would want to...
  16. I don't think it's a complete risk unless you are...

    I don't think it's a complete risk unless you are trying to get midrange out of it. Have you ever listened to 50-200Hz by itself? In a car where the room is really small, the room modes are in the...
  17. The clarion shallow mount models similar to the...

    The clarion shallow mount models similar to the peerless except it is not as sensitive, at least using an older generation where they actually listed all the specs. I am assuming there is not much...
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    Math is good. I would guess rounding error, but...

    Math is good.
    I would guess rounding error, but if you have specific examples post them up. Using values that are rounded can cause variation when calculating.

    So what is your interest in Qms if...
  19. Except that one was totally geared for home...

    Except that one was totally geared for home theater in-wall applications. The specs were completely worthless for car use because a small box results in too early of roll-off (too high Fc).

    I want...
  20. Those reverse magnets are like something out of a...

    Those reverse magnets are like something out of a Madmax movie. I'd be more worried about getting torn up by them. One of my ODW1000's decided to develop a bad tinsel connection I cannot reach to fix...
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    hifi and sub in the same sentence? You are joking...

    hifi and sub in the same sentence? You are joking right?



    Most likely due to multiples sharing the load and not necessarily the particular speaker. This is often overlooked. As long as the...
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    Defeats one of the so-called claimed advantages...

    Defeats one of the so-called claimed advantages of IB and that is saving space. At that point might as well build a proper sealed box rather than a leaky half-assed one. Sealed by definition IS...
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    Not really a fan of IB because it's not as simple...

    Not really a fan of IB because it's not as simple as people think it could be when you actually have excursion i.e. a moving mass shaking the mounting surface amongst other issues.

    But, as far as...
  24. For mechanical protection but in Mark's case I...

    For mechanical protection but in Mark's case I don't think he has ever blown out the surround or buckled a coil. He is a slow cooker type.:lol:
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    If you do this MLV is the only product capable of...

    If you do this MLV is the only product capable of providing sound blocking abilities that is reasonably priced and easy enough to work with. Don't waste time using anything else.
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