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Thread: 170 amazing...better than 340?

  1. #21
    Join Date
    Aug 2004
    Location
    rancho palos verdes, ca
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    26

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    that was a great detailed reply dave, thank you!!!! )

    i'll be emailing you

  2. #22
    Join Date
    Feb 2005
    Location
    Massachusetts
    Posts
    335

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    Hey Dave, I noticed the Y-Axis "dB" units begin at different points. Is there a reason for this?

    Oh, and are both of these speakers being fed the same amount of power?

    I'm really curious about the 340 tweeter, I'd love to compare it to the one on my 170s.

  3. #23
    Join Date
    Aug 2003
    Location
    USA
    Posts
    3,858

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    Quote Originally Posted by Nicholas Mosher
    Hey Dave, I noticed the Y-Axis "dB" units begin at different points. Is there a reason for this?

    Oh, and are both of these speakers being fed the same amount of power?
    Hi Nicholas,

    Excellent questions... You will notice on the graphs that the dB "scale" is the same... The amount of power fed to each speaker doesn't matter as this graph is time based and the results are normalized. No matter how much power I feed the speaker (up until compression begins) the results would be the same. The measurement equipment will automatically set the range of the dB axis so that the fundamental (the initial response) will fit inside the window. The fundamental is the first "slice" you see at 0 ms. Keep in mind that the CMT-340 is about 3dB more efficient than the CBM-170.

    Hope this helps.
    .
    .
    .
    Good Sound To You!

    David Fabrikant
    www.ascendacoustics.com

  4. #24
    Join Date
    Aug 2004
    Location
    rancho palos verdes, ca
    Posts
    26

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    I have been exchanging email with Davef and he suggested that I swap one of the mains with the center to see if my center is defective. Here is my last email.



    Dear Dave,

    I swapped one of the 340 mains with the center and
    found that the sound is the same. I think that all
    340s are okay and what I have been hearing as
    sibilance is due to a bad recording or source and
    excessive volume.

    I like the 340s, but if my house is burning down given
    a sophie's choice, I'll go back in and take the 170s
    before the 340s since they are lighter.

    I'll let you know if I find anything else. Thank you
    for your help.

  5. #25
    Join Date
    Jan 2004
    Location
    Charter Oak, Iowa
    Posts
    579

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    Quote Originally Posted by rosa
    I like the 340s, but if my house is burning down given
    a sophie's choice, I'll go back in and take the 170s
    before the 340s since they are lighter.
    This cracked me up!! Rosa likes his 170's... and there's not a thing wrong with that!!

    Randy

  6. #26
    Join Date
    Sep 2003
    Location
    rancho cucamonga
    Posts
    86

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    not to sound like a broken record, but i've had my 170 mains for about 3 months now and i remembered reading somewhere someone listened to 2-ch music and the soundstage is excellent that the voice was coming from the middle. so i turned off my 340c and my 200 surrounds, popped in norah jones last night and sure enough, her voice is coming smack down the middle where the 340 is!!! i pulled my wife from the other room and she usually doesn't have ears for these things, and i asked her where the sound was coming from, and she said the same thing...omg. outstanding performance and value, 2 thumbs way up dave f & james!!! the 170s still surprise me

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