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Thread: Introducing the Sierra-LX!!!

  1. #951
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    Aug 2003
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    Default Re: Introducing the Sierra-LX!!!

    Quote Originally Posted by chas View Post
    Will the Horizon be offered with the LX tweeter?
    Yes, we can actually offer this now...
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    Good Sound To You!

    David Fabrikant
    www.ascendacoustics.com

  2. #952
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    Oct 2022
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    Default Re: Introducing the Sierra-LX!!!

    Anyone using a Topping LA90 to drive their LXs? Curious if it has enough power. Thanks.
    CJH

  3. #953
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    Default Re: Introducing the Sierra-LX!!!

    Quote Originally Posted by CJH View Post
    Anyone using a Topping LA90 to drive their LXs? Curious if it has enough power. Thanks.
    CJH
    How far back will you be seated from the speakers?
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    Good Sound To You!

    David Fabrikant
    www.ascendacoustics.com

  4. #954
    Join Date
    Oct 2022
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    Default Re: Introducing the Sierra-LX!!!

    Quote Originally Posted by davef View Post
    How far back will you be seated from the speakers?
    Around 3 meters. Plan to run them full range (no crossover with a sub added in around 40-50Hz.). My room is around 235 cu m.
    CJH

  5. #955
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    Default Re: Introducing the Sierra-LX!!!

    Quote Originally Posted by CJH View Post
    Anyone using a Topping LA90 to drive their LXs? Curious if it has enough power. Thanks.
    CJH
    Quote Originally Posted by davef View Post
    How far back will you be seated from the speakers?
    Quote Originally Posted by CJH View Post
    Around 3 meters. Plan to run them full range (no crossover with a sub added in around 40-50Hz.). My room is around 235 cu m.
    CJH
    The Topping LA90 is supposed to be very nice, but power is modest. I’m not sure you you will have much headroom. ASR measured 36 watts per channel at 8 ohms with 1% distortion. If you don't listen very loud, you may be fine.

    Read the power requirements at the specifications section of this page:
    https://ascendacoustics.com/products/sierra-lx-pair

    3 Feet or Less 3 watts minimum
    9 Feet or Less 33 watts minimum
    15 Feet or Less 90 watts minimum
    21 Feet or More 180 watts minimum
    Last edited by curtis; 10-14-2022 at 11:29 AM.
    -curtis

  6. #956
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    Oct 2022
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    Default Re: Introducing the Sierra-LX!!!

    Would the ex2 be a better choice?
    CJH

  7. #957
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    Default Re: Introducing the Sierra-LX!!!

    Quote Originally Posted by CJH View Post
    Would the ex2 be a better choice?
    CJH
    Slightly. Did you already buy the amp? I really don't think that amp was meant to power speakers in a normal room. To me, it seems more like a great desktop amp.

    How loud you listen will largely determine if it will be suitable.
    -curtis

  8. #958
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    Default Re: Introducing the Sierra-LX!!!

    Quote Originally Posted by CJH View Post
    Around 3 meters. Plan to run them full range (no crossover with a sub added in around 40-50Hz.). My room is around 235 cu m.
    CJH
    Maximum measured power of this amp into 8 ohms is only 36 watts. With that amount of power and at your listening distance, you will be able to achieve peak output levels of approx 95-96dB. 96dB is considered quite loud, so if you tend to listen below this volume level, it is a fine choice.
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    Good Sound To You!

    David Fabrikant
    www.ascendacoustics.com

  9. #959
    Join Date
    Jan 2022
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    34

    Default Re: Introducing the Sierra-LX!!!

    How would crossing over the speakers at 80hz or 60hz affect these distances and minimum power ratings?

    It should improve it though since the amp doesn't need to provide power at these lower frequencies but by how much?

  10. #960
    Join Date
    Mar 2012
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    85

    Default Re: Introducing the Sierra-LX!!!

    Quote Originally Posted by hometheater View Post
    How would crossing over the speakers at 80hz or 60hz affect these distances and minimum power ratings?

    It should improve it though since the amp doesn't need to provide power at these lower frequencies but by how much?
    An amplifier channel under full range load will be under more stress from lower frequencies than anything else. I think this is the motive for your question.

    But, if we presume that the power recommendations per distance for a reasonable listening level already presume that the amplifier being used isn't under stress at full range, then the wattage indicated gets all frequencies out the door to the listening distance at the level indicated. Crossing over the speaks higher has the potential to remove stress from an amp, but doesn't make everything in the high pass louder necessarily.

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