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  1. #1
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    reduce speaker hiss

    The output of my amplifier produces a hiss sound from speaker. Can any one help me to remove this problem ? Is this the fault of amplifier or speaker or both ?

    Thanks :)

    •   Alt24th July 2006, 18:01

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  2. #2
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    how to remove hiss from speakers

    Quote Originally Posted by my_books
    The output of my amplifier produces a hiss sound from speaker. Can any one help me to remove this problem ? Is this the fault of amplifier or speaker or both ?

    Thanks :)
    It is not the speakers causing this. Dou you have some pre-amplifier as well or amplifier only? Because amplifier should not cause audible hiss if designed properly.



    •   Alt24th July 2006, 21:48

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    reducing speaker hiss

    You may have an defective ground plane on your amplifier or preamplifier.
    You may have problem with leak field from transformer nearby.
    Just analysing
    Disconect de inputs and conect them to ground and track the signal with an osciloscope in the several stages.



    •   Alt24th July 2006, 22:57

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  4. #4
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    how to reduce speaker hiss

    Quote Originally Posted by Ave_Rapina
    You may have an defective ground plane on your amplifier or preamplifier.
    You may have problem with leak field from transformer nearby.
    Just analysing
    That would cause hum (50/100Hz) but not hiss.



  5. #5
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    how to reduce hiss in speakers

    What kind of hiss
    Describe more precice if possible.
    What kind of amplifier are you using???



  6. #6
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    reducing speaker hum and hiss

    Quote Originally Posted by sinip
    Quote Originally Posted by my_books
    The output of my amplifier produces a hiss sound from speaker. Can any one help me to remove this problem ? Is this the fault of amplifier or speaker or both ?

    Thanks :)
    It is not the speakers causing this. Dou you have some pre-amplifier as well or amplifier only? Because amplifier should not cause audible hiss if designed properly.
    Is combination of speaker and amplifier, High power amplifier as 200 Watt give more noise compare 20 Watt amplifier if this have same dynamic range.

    or 200 Watt amplifier cost lot more money if you want same noise floor as good 20 Watt amplifier depend of need 10 dB more dynamic range compare to 20 Watt amplifier.

    If you have high sensitivity loudspeakers (horn, 100 -105 dB/1W) coupled to low price amplifier (super market type) you have near guarante hiss from speaker, but couple to 'orginal' low sensitivity loudspeaker (80- 90 dB/1W), hiss level from speaker drown in room noise.



  7. #7
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    removing amplifier hiss

    Hi,

    we can tune out the hiss using filters...
    can you post more details of your preamp and power amp?

    Added after 4 minutes:

    If possible isolate(shield) the amplifier from any nearby transformer from the power supply... (may be thats a cause of stray magnetic field from the transformer)



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