HE 10.1 Measurements

Discussion in 'Home Theater Projects' started by AlexKunec, Jun 15, 2003.

  1. AlexKunec

    AlexKunec Stunt Coordinator

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    I finished building some adire HE10.1 about a month ago and I just tested them with an RS digital SPL meter. Here are the results (at listening position):


    Fq SPL (Db)
    10088
    13088
    16087
    20094
    25091
    30085
    40092
    50087
    60085
    70094
    80089
    100088
    120090
    140087
    160086
    200096
    240090
    280093
    320097
    360098
    4000105
    450092
    5000110
    5500106
    6000104
    6400103
    7600110
    860095
    900096
    1000088
    1200085
    1400086
    1600086
    1800080
    2000069


    (Does anyone now the correction values for the DIGITAL one?)

    Anyways, do they look right? It looks quite high at 7600, 5000 and 4000. They do sound harsh at times. Is this due to my room or the speakers? Is there anyway to tame them? They are driven by a bryston 3b, with my m-audio revolution 7.1 soundcard as my preamp. (dont have money right now)
     
  2. Jonathan T

    Jonathan T Second Unit

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    If I remember correctly the HE series rolls off as you get into the higher frequencies and has a hump ar around 2khz. Dan has a kit to correct this though.
     
  3. Michael R Price

    Michael R Price Screenwriter

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    Holy cow, 110db at 5KHz? Where did you hold the microphone? Did you wear earplugs?

    Yes, that is a ragged response, but it might not be because of the speakers. If they sound harsh, you could try breaking them in if they're still new (play heavy bass), modify the crossover, or change the placement.
     
  4. Mike Thompson

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    Here are some results from someone who built these, and has measurement software:
    http://www.gti.net/wallin/audio/he_crate/he_crate.html

    Although the response is somewhat ragged, I've talked to him about the speakers, and he likes them in general. Says imaging is impressive, along with dynamics.
    Mike
     
  5. RS SPL meter is no way to measure the responce of a speaker IMO. since it is ungated, you get LOADS of information from room reflections etc. You really should do gated MLS measurements for anything meaningful with respect to what the speaker itself contributes.
     
  6. Dan Wesnor

    Dan Wesnor Second Unit

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    You could do it the old-fashioned way and use 1/3 octave warble tones. This is probably the best way to do it with an SPL meter. But Anthony's right about the inaccuracy of non-gated in-room measurements.

    I would imagine that you're seeing a lot of cavity resonance from the tweeter being mounted down inside the woofer. You get that with almost any speaker like this.
     
  7. Allen Ross

    Allen Ross Supporting Actor

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    mmm database problems, i didn't get back here to check if you replied so i will try again [​IMG]

    how do you like that m-audio revolution 7.1 soundcard? better then the mini outs? worth the 100 bucks?
     

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