1. Join Now

    AVForums.com uses cookies. By continuing to use this site, you are agreeing to our use of cookies. Learn More.

What is 'LFE high Cut ' on my amp?

Discussion in 'AV Receivers & Amplifiers' started by Bristol Pete, May 6, 2003.

  1. Bristol Pete

    Bristol Pete
    Well-known Member

    Joined:
    Oct 18, 2002
    Messages:
    5,577
    Products Owned:
    0
    Products Wanted:
    0
    Trophy Points:
    106
    Location:
    Bristol.
    Ratings:
    +321
    Hello,

    My receiver, a Sony STRDB 870 is set up with cross over at 80hz, using the sub out socket into a REL Quake.

    Pleased with the sound.

    However, I have a query. On the set up menu, if I tab along, I find an option called ' LFE high cut' which can be changed.

    However, I am not sure what this is. I pressume this has something to do with using the high level input on the sub and running to the actual front speakers.

    Can anyone clear this up please.

    To clarify, my speakers are all set to small, crossed at 80hz.

    Do I need to worry about the high cut option or indeed change it?

    Thanks in advance,

    Captain Benefit.
     
  2. HotblackDesiato

    HotblackDesiato
    Active Member

    Joined:
    Dec 4, 2002
    Messages:
    1,170
    Products Owned:
    0
    Products Wanted:
    0
    Trophy Points:
    63
    Location:
    USA
    Ratings:
    +230
    I no longer have my 1080, but from recollection it's the upper Hz limit on stuff sent to the sub via the low level out...120Hz is the default i think.
     
  3. Reiner

    Reiner
    Active Member

    Joined:
    Jul 16, 2000
    Messages:
    3,315
    Products Owned:
    0
    Products Wanted:
    0
    Trophy Points:
    61
    Location:
    Germany
    Ratings:
    +13
    LFE means Low Frequency Effect channel, the .1 of 5.1 soundtracks. It's specified at 0 - 120 Hz and normally I would not advise to cut it. Just make sure you set the x-over at the sub to bypass or higher than 120Hz (else the sub will cut off, too).
     
  4. kelvin

    kelvin
    Member

    Joined:
    Apr 22, 2002
    Messages:
    1,544
    Products Owned:
    0
    Products Wanted:
    0
    Trophy Points:
    51
    Location:
    Down South... (Bournemouth)
    Ratings:
    +45
    This is exactly right :) As Reiner says though, make sure that you set the crossover on your sub to a higher point than you have on the amp. Most people tend to set the crossover on the sub to maximum, and let the amp deal with all of the decoding side of things :)

    K.
     
  5. kelvin

    kelvin
    Member

    Joined:
    Apr 22, 2002
    Messages:
    1,544
    Products Owned:
    0
    Products Wanted:
    0
    Trophy Points:
    51
    Location:
    Down South... (Bournemouth)
    Ratings:
    +45
    You may, or may not be interested, but a while ago in this thread here, I explained some of the various Bass management settings that are present on Sony amp's.

    About 7/8 posts down :)

    Hope this is of some help...

    K.
     
  6. Bristol Pete

    Bristol Pete
    Well-known Member

    Joined:
    Oct 18, 2002
    Messages:
    5,577
    Products Owned:
    0
    Products Wanted:
    0
    Trophy Points:
    106
    Location:
    Bristol.
    Ratings:
    +321
    All speakers set to small.

    Crossed Over @ 80 hz.

    Sub dialled to cross over point 80hz-ish on rear. (approx, as not exactly marked clearly on sub)

    LHE high cut set to (STD) - 120 hz, so that the transistion of the bass from the Sub back to the fronts is smooth, instead of 80hz, where I am likely to hear the sub stop pumping out the bass.

    I hope that this is correct, and I pressume therefore that the fronts will drop to 80hz ish, where they will roll off and the sub will take over.

    This is the hardest part of setting up my kit yet and its winding me right up :suicide:

    Please advise otherwise thanks,

    Captain Benefit.
     
  7. Reiner

    Reiner
    Active Member

    Joined:
    Jul 16, 2000
    Messages:
    3,315
    Products Owned:
    0
    Products Wanted:
    0
    Trophy Points:
    61
    Location:
    Germany
    Ratings:
    +13
    You should set this to 120Hz at least or max (or bypass if available), else you cut the frequencies between 80 and 120 Hz from the LFE.

    That is correct for all speakers set to SMALL.
     
  8. Bristol Pete

    Bristol Pete
    Well-known Member

    Joined:
    Oct 18, 2002
    Messages:
    5,577
    Products Owned:
    0
    Products Wanted:
    0
    Trophy Points:
    106
    Location:
    Bristol.
    Ratings:
    +321
    Thanks for that.
     
  9. kelvin

    kelvin
    Member

    Joined:
    Apr 22, 2002
    Messages:
    1,544
    Products Owned:
    0
    Products Wanted:
    0
    Trophy Points:
    51
    Location:
    Down South... (Bournemouth)
    Ratings:
    +45
    :)

    Beat me to it... ;)
     

Share This Page

Loading...