Passive sub low bass cut off required?

Discussion in 'DIY Discussion' started by sastusbulbas, Jan 17, 2010.

  1. sastusbulbas

    sastusbulbas

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    Passive sub low bass cut off required?

    Anyone know of a simple bass filter for a passive sub? Or a simple cheap sollution before the power amp?

    I would like to be able to cut the low bass around 19Hz or 25Hz in a passive 100 liter sub, to protect the cone from over excursion and was wondering if anyone knew of a simple circuit or such I could build or buy?

    I am also wondering if I should fit a passive low pass filter crossover? Though it will be utilised with sub out from an AV amp?

    Really I want to roll of the low bass from around 25Hz or 19Hz and don't need anythng above 120Hz I guess? It's a simpe 100 litre ported enclosure with a 15" driver which will be port tuned to either 19Hz or 25Hz.

    Cheers
     
    sastusbulbas, Jan 17, 2010
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  2. sastusbulbas

    themadhippy seen it done it smokin it

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    simplest thing would be a capacitor of around 1000uf and an inductor of 10 mh in series with the driver,assuming its an 8 ohm driver.
     
    themadhippy, Jan 17, 2010
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