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  1. #11
    Administrator Tracy Rainwater's Avatar
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    Yours has the following specs for noise.

    Acoustical Noise 17,8 dB(A)
    Acoustical Noise with L.N.A. 10,7 dB(A)
    Acoustical Noise with U.L.N.A. 7,4 dB(A)

    The one I linked to says 17 dba. What does the LNA and ULNA ratings mean?

  2. #12
    Senior Member David Vaughn's Avatar
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    I have no idea, but they were recommended to me to be the quietest fans that they offered at the time.
    David Vaughn
    Technical Writer/Blu-ray Reviewer
    Sound and Vision Magazine

  3. #13
    Senior Member old dust's Avatar
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    1 out of 1 members found this post helpful.
    Low Noise & Ultra Low Noise Adapters - A way to lower fan speed to lower noise!

    To determine the usefulness of the LNA and ULNA adapters we repeated the rear exhaust tests with the Noctua fan using the included adapters. The black ended extender is the Low Noise Adapter, running the fan at 900rpm, and the white ended adapter is the Ultra Low Noise Adapter for running the fan at 600rpm.
    Fan Speed/Noise Adapters
    [SIGPIC]

  4. #14
    Administrator Tracy Rainwater's Avatar
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    Quote Originally Posted by old dust View Post
    Low Noise & Ultra Low Noise Adapters - A way to lower fan speed to lower noise!

    To determine the usefulness of the LNA and ULNA adapters we repeated the rear exhaust tests with the Noctua fan using the included adapters. The black ended extender is the Low Noise Adapter, running the fan at 900rpm, and the white ended adapter is the Ultra Low Noise Adapter for running the fan at 600rpm.
    Fan Speed/Noise Adapters
    Good to know. Thanks, Dust.

    Either way, 17.8db won't be an issue in my installation.

    Funny, not really, I recently have an issue with our XBOX 360 freezing. I pulled it out of the rack and checked the vents and made sure the internal fan was running. It still freezes after a while. I found an old AC powered fan from some unknown application and pointed it into the game's air intake. It runs fine. So, I'm thinking I need fans in the main theater rack as well.

    I never thought I needed fans there since the back of the rack is currently open and my amp and pre/pro don't really generate much heat. Apparently the XBOX is the main heat producer.

  5. #15
    Senior Member David Vaughn's Avatar
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    1 out of 1 members found this post helpful.
    The XBOX is a space heater!
    David Vaughn
    Technical Writer/Blu-ray Reviewer
    Sound and Vision Magazine

  6. #16
    Moderator jerrich's Avatar
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    1 out of 1 members found this post helpful.
    Fans attract a LOT of dust. A good disposable/washable filter might save you some grief down the line.
    JR

  7. #17
    Administrator Tracy Rainwater's Avatar
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    Quote Originally Posted by David Vaughn View Post
    The XBOX is a space heater!
    The only components that I have owned that create more heat is an Onkyo AVR, that cooked the HDMI board and was repaired under their recall, and an early Integra pre/pro.

  8. #18
    Administrator Tracy Rainwater's Avatar
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    Quote Originally Posted by jerrich View Post
    Fans attract a LOT of dust. A good disposable/washable filter might save you some grief down the line.
    JR
    My projector has a filter but not the XBOX. It might be possible to rig one up.

    The side vents look clean. I wonder if there's dust lurking inside somewhere.

  9. #19
    Senior Member David Vaughn's Avatar
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    The XBOX 360's have been known to overheat. I had to repair one at one point because the heat sync on the CPU was defective. I bet that's what's going on with yours too Tracy.

    On a separate note, I just read the title of this thread and my dirty mind went to work!
    David Vaughn
    Technical Writer/Blu-ray Reviewer
    Sound and Vision Magazine

  10. #20
    Administrator Tracy Rainwater's Avatar
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    Quote Originally Posted by David Vaughn View Post

    On a separate note, I just read the title of this thread and my dirty mind went to work!
    I do like a good, attention-grabbing thread title.

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