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Thread: Introducing the Sierra-LX!!!

  1. #941
    Join Date
    Apr 2014
    Posts
    417

    Default Re: Introducing the Sierra-LX!!!

    Quote Originally Posted by High Fidelity View Post
    I set the LX to small with both a 80Hz and 100Hz crossover and the sound I was experiencing did reduce quite a bit.

    As far as subwoofers, purchasing two, which would be very beneficial in a room of my size, almost necessary, it’s not something I would be able to do for some time.

    It sounds like multiple subs are likely required and then after that is done perhaps even room treatments if you are still not quite happy with the results. The good news about having a sealed square shaped room, the bass is easy to figure in advance from Welti’s research.

    I looked at the excel spreadsheets and it looks like you can very good results with 2 or 4 subwoofers, but it largely depends on your seating placement. Two subs can be very good with some seating locations and not so good with others. With some seating locations 4 subs are required to get good results. In any case since the room is quite small, a subwoofer like the most inexpensive sealed Rythmik would be more than enough as far as output goes. You would be at about the budget of the Sierra LX’s for a pair of them. This would require you moving your seat possibly to get good bass response from just two subs though.

    Check out the following AV Rant episode where they interview Todd Welti. He goes though at the end how to use the excel documents, from his Matlab simulations.

    https://youtu.be/BZtRNVG078A

    Welti was kind enough to send me the excel documents to look though to predict the best seating location for a range of room sizes, seating locations and subwoofer configurations, so that you can make a really good choice of subs to get a nice even response, depending on where you want your seats. Otherwise you need to pay for access to a journal. It only takes about 15 minutes to look though and make a good choice.

  2. #942
    Join Date
    Nov 2009
    Posts
    277

    Default Re: Introducing the Sierra-LX!!!

    You can try stuffing the ports and see if you like it or not. Or run high pass on them. Not sure if your denon have adjustable eq , if it does it should help tame the problematic frequency but you new rew to figure the frequency.

  3. #943
    Join Date
    Dec 2021
    Posts
    26

    Default Re: Introducing the Sierra-LX!!!

    Are most of you using room EQ with the LX? Room treatments?

    Ive had the S1, S2EX, now the LX and Ive always just used pure direct or stereo.
    Last edited by High Fidelity; 09-20-2022 at 01:32 PM.

  4. #944
    Join Date
    Nov 2009
    Posts
    277

    Default Re: Introducing the Sierra-LX!!!

    I use eq for my subs. The LX at 55hz has 6 db over the EX, it will excite the room a lot more.
    Last edited by RicardoJoa; 09-21-2022 at 11:37 AM.

  5. #945
    Join Date
    Aug 2003
    Location
    USA
    Posts
    5,001

    Default Re: Introducing the Sierra-LX!!!

    Quote Originally Posted by wtrimble View Post
    Any update on the LX upgrade for the Towers Dave?
    Sorry I missed this. I will start a new thread discussing this when things have been finalized and we have an estimate on product availability.

    Thanks!
    .
    .
    .
    Good Sound To You!

    David Fabrikant
    www.ascendacoustics.com

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