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Speaker Frequency Question

Discussion in 'Home Cinema Speakers' started by hhudson26, Jan 5, 2005.

  1. hhudson26

    hhudson26
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    I've got a question about something I just noticed and maybe someone can enlighten me. I've slowly (over the last five years) accumulated the following speakers - Bookshelf - Infinity RS3, Subwoofer - Infinity BU-1, In-Wall - Infinity ERS-210, Center Channel - Infinity IL-25C. I bought the bookshelf speakers and sub at the same time. I now need another sub (the amplifier is bad) and upon looking for another sub noticed the following. The frequency response on the RS3 is 40Hz to 20Khz, and the frequency response on the BU-1 is 45 to 150Hz. The drivers on the RS3 are 6 1/2" while the sub is 8". How is it that the RS3's have a lower capability than the sub? Now, I'm thinking that I need to look for a sub with capability below 40Hz. Any thoughts? I'm currenlty looking at Velodyne subs.

    Thanks for any input,
    hhudson
     
  2. KHCC

    KHCC
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    Mornin'

    It is highly unrealistic that the bookshelf speakers go down to 45Hz, I know infinity do make some good speakers, but the quoted frequency responce from manufacturers is accurate to a certain degree. Their measurements are normally taken by a mic at 1 meter away in an accoustic studio. Real world responses are different in different rooms (size, shape, windows, no windows, wooden floor or concrete floor etc....)

    I know of a few floor standers that have two midbass drivers and still don't go down to 45Hz but then there are plenty of book shelf speakers that go down to 25Hz like the Canton Karat M35 but it has a 6.5" passive sub on the side of it! But then you have to consider whether the manufacturer is measuring at +/-2.5dB or +/- 6dB which makes the world of difference.

    I terms of Velodyne subwoofers, what is your budget, as the CHT-R range is astonishing for the money but then the SPL mkII range is unbeatable for the sound quality, depth and output. Come for a demo and as I can show both ranges, you'll be very inpressed at the amount of bass you can get from a small box which is what Velodyne specialise in.

    Hope this helps.

    regards
     
  3. hhudson26

    hhudson26
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    As much as I'd like to come in for a demo, I don't think I'll be able to make the trip from Texas any time soon ...... but thanks very much for the invite! And I appreciate the information as well, and will keep an eye open for the CHT's. I've already checked out a couple on the web, and will probably listen to a couple this weekend.

    Thanks again,
    hhudson
     

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