9090db Loudness and 300hz bass settings

Discussion in 'Exclusively Sansui' started by Steveomatic, Aug 3, 2017.

  1. Steveomatic

    Steveomatic Member

    Messages:
    59
    Location:
    Florida
    Hi,

    I have a question I hope I can get some feedback on. I have a 9090db that works great with so far no issues (knock on wood). My speakers are 2 sets of 8ohm Klipsch Heresy's. I usually only have one set turned on using speaker "a" but sometimes I use both sets with "a&b"

    I like the sound when the loudness setting is on and I set the bass selection to 300hz. If I always listen to my music this way will it eventually hurt my 9090db? I really don't push my speakers. I listen at low to mid volume with every so often going up from there. I just want to make sure if I always use these settings is it okay.

    Thank you for all the feedback,
    Steve
     
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  2. tnsilver

    tnsilver Super Member

    Messages:
    2,559
    Location:
    Boston
    I don't think there's direct damage but lows are energetic. If you use a DBT you would notice the lamp go brighter when loudness is pushed on and even more so when you demand more bass.
    Your unit draws more current this way. Higher currents mean higher temperatures and probably higher degradation levels of EC's and old carbon resistors reaching their end of life an itsy bitsy little bit sooner.
    Unless -- they're already on the edge, in which case... kaboom.
     
  3. LBPete

    LBPete Rolling Along Subscriber

    Messages:
    10,909
    Location:
    Long Beach, CA
    If your 9090DB is working properly you can play it all day long like that. There is no combination of the front panel controls that will damage a properly working unit, just keep an eye on the temperature of the heat sink on the back of the unit. If it gets hot, turn the volume down. Heat can also be an indication that it needs service. If the unit hasn't been serviced in a long time, it's probably a good idea to get it checked if you are going to push it hard.

    - Pete
     
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  4. LBPete

    LBPete Rolling Along Subscriber

    Messages:
    10,909
    Location:
    Long Beach, CA
    Oops, almost forgot, please post the serial number for the database. Click on the link in my signature block.

    - Pete
     
  5. moefuzz

    moefuzz Active Member

    Messages:
    359
    Location:
    Peeyong Bangyou
    .


    Sansui 9090 was not made
    by chevrolet or
    for or by GM.

    -Like many before you, -No problems in letting her run with the big dogs
    or letting her beautiful hair whip haphazardly
    in the wind
    on a hot August night.


    For you have something
    that was not made
    in the style of "Planned Obsolescence"



    A Sansui is not a chevrolet




    moe






    .
     
    Last edited: Aug 4, 2017
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  6. moefuzz

    moefuzz Active Member

    Messages:
    359
    Location:
    Peeyong Bangyou

    Steve,

    Train your ear to hear the audio-able difference
    when you go to loud volumes.

    Eventually,
    Your girl will start to clip
    Which inadvertently causes her big transistors
    to be starved of watts and amps...
    ...which in turn brings on what we
    perceive asdistortion.

    If and when you push it,
    and I know you will,
    a person can "aim" to hear the point
    where the beautifully clean sound that
    Sansui is know for,
    -turns to the onset of distorting.

    When a person can recognize that point,
    Then he can also learn to utilize the loudness/hertz settings
    to "play around" just under clipping of your amp (~say 3 or 4 db down/under when she starts to clip)
    .
    Generally speaking,
    The moment you push your amp into clipping,
    is the moment it starts to distort.
    The distortion (clipping) input into your transistors,
    causes then to run excessively hot,

    ...Steve, All is good if you crank her and be mindful of the distortion,
    the clipping, the excessive heat.

    ===========================================



    *If there's one thing I know about
    Sansui owners is that
    they seem to have acquired an above average 'ear'
    - for clean music

    and that 'ear' has eventually not just
    brought them to Sansui,
    But also brought them to places like this forum.

    ? I would suspect that the average user here
    could/would or already has learned to
    pinpoint the exact point when you
    push your amp to clipping (and all that's associated with it).


    Cheers, :beerchug:
    moe
    (Listening to Michael Franks tonite):rockon:

    :music:
    moe




    .
     
    Last edited: Aug 5, 2017
  7. tnsilver

    tnsilver Super Member

    Messages:
    2,559
    Location:
    Boston
    Neah, you can't clip a good 9090DB without blowing the windows out of their frames first. :naughty:
     
  8. whoaru99

    whoaru99 Epic Member

    Messages:
    39,334
    Location:
    LoTL
    That's a common misconception (that you hear some sort of big increase in distortion at the first hint of clipping).


    If one hears clear evidence of distortion, one is already well past the point where clipping first began to occur.
     
  9. moefuzz

    moefuzz Active Member

    Messages:
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    Location:
    Peeyong Bangyou
    The point IS
    that you learn to hear the onset of distortion.



    .
     
  10. whoaru99

    whoaru99 Epic Member

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    The point IS it is pretty much impossible to detect the onset of clipping by ear.

    Many people think it presents itself like a room lighting up when turn on the light switch, but it doesn't.

    Again, by the time you actually hear clipping it's generally well past the point where it started.

    I certainly don't disagree one should learn the characteristics of their system, in general, but the part about clipping needed to be clarified.
     
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  11. moefuzz

    moefuzz Active Member

    Messages:
    359
    Location:
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    .


    Whether you believe You can of you can't,
    You Are Right.


    Just because you can't,
    doesn't mean the OP can or can't,
    or that studio engineers
    and or other trained ears can or can't



    .
    .
     
  12. moefuzz

    moefuzz Active Member

    Messages:
    359
    Location:
    Peeyong Bangyou


    I totally agree with Your admission that you cannot detect
    when your amp becomes unstable.

    104%

    .
     
    Last edited: Aug 11, 2017
  13. whoaru99

    whoaru99 Epic Member

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    LOL. Vapid twaddle.

    That you have to alter my comment in a fraudulent quote is sophomoric, at best.
     
    Last edited: Aug 5, 2017
  14. whoaru99

    whoaru99 Epic Member

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    Of course they can. :rflmao::rflmao::rflmao:
     
    Last edited: Aug 5, 2017
  15. kvflyer

    kvflyer AK Subscriber Subscriber

    Messages:
    3,116
    Location:
    Fernandina Beach, FL, USA
    Keep in mind that driving an amplifier to clipping can fry tweeters. I bought a pair of Klipsch Heresy II speakers and both tweeter voice coils were open. It was not disclosed in the eBay auction. I was able to replace them with new VCs.

    I often listen to pipe organ music and the 32' C (~ 16 Hz) uses a lot of power to reproduce and can easily fry a woofer at high listing levels. I (unfortunately) ripped apart the woofer in a pair of HH Scott S-15 after possibly consuming a few extra adult beverages one night. :eek:.

    Lucky for me it only pulled the tinsel lead off of the terminal. (It could have fried the voice coil)
     
  16. moefuzz

    moefuzz Active Member

    Messages:
    359
    Location:
    Peeyong Bangyou

    To insult peoples from around the world on internet is
    what you do best?

    Insulting the worlds first self make billionaire and his 100 year old quote
    maybe takes special talent.

    To assume you are American would be incorrect?

    Do you wonder why world think American wears asses for hats?
    Are you to further the cause?

    You make it shine that I am not American.
    and that is the saddest thing about all this.

    .








    .
     
  17. Hipocrates

    Hipocrates Anti-Muppet Subscriber

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    1,199
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    Man, you write some weird things sometimes... And what's with the whole ''inserting blank lines" thing?
     
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  18. whoaru99

    whoaru99 Epic Member

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    A lion kills and partakes of the flesh because it must eat; it has no choice.
    One who feels insulted and condemns insult, unlike the lion, had a choice to eat or not to eat.
    And the choice was to eat.
     
    Last edited: Aug 12, 2017
  19. whoaru99

    whoaru99 Epic Member

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    The blank lines ars so you have plenty of time to reflect on the insightful nature of the posts. LOL.
     
  20. Hipocrates

    Hipocrates Anti-Muppet Subscriber

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    :rflmao::rflmao::rflmao:
     

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