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What is the low frequency driver - Mackie SWA1501 Subwoofer

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Usually the "low frequency driver"is the speaker that is responsible for playing the lower frequencies of the audio. Otherwise is the speaker that is in the subwoofer, or the woofer at the 2-way speakers. Do you came up with a problem with your own subwoofer or you are just asking a question?

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Posted on Sep 13, 2010

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What is the impedance of the 12" driver in this subwoofer


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Amplifier Features Powersaver auto-on/off, soft clipping, thermal protection Low Pass Filter Frequency Variable 50Hz-150Hz Low Frequency Driver 310 mm, carbon-fiber-reinforced composite cone, Apical™ former Low Frequency Extension 23 Hz (DIN) Sub / Sat Phase Alignment 0 - 180 Finishes Black Ash Inputs From A/V receiver/processor or Paradigm X-Series Control Unit or preamp left/right output; From receiver/amplifier speaker terminals or main/satellite speaker terminals Weight 68 lbs. (31 kg) Dimensions HxWxD 19.75" × 17" × 21"
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Specifications are subject to change without notice.
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What is the low pass filter on my amp for


A subwoofer is a low frequency device so it is designed to amplify low frequencies <200 herts to play on a speaker designed for low frequencies. You want low frequencies to pass to the amplifier while high frequencies do not enter the amplifier to cause damage to your amplifier or sub woofer speakers plus it will sound terrible. Anothher reason may be to not have to worry about a crossover filter on the speaker system..

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1 Answer

What are the applications of a band pass and low pass filters?


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For example, a "band pass" filter rated for 500MHz-4GHz will effectively eliminate all frequencies below 500MHz and all frequencies above 4GHz. A "low pass" filter rated at 10KHz will effectively eliminate all frequencies that are above 10KHz. A "high pass" filter rated at 70Hz will effectively eliminate all frequencies that are below 70Hz.

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Low pass crossover


Low-pass crossover
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Hope this helps,
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Transistor


The first letter: A = Ge material semiconductors, B = Si material semiconductors, C = GaAs material semiconductors, R = Compound material. The second letter: A = Diode (low power, signal); B = Diode (variable capacitance)); C = Transistor (low power, audio frequency); D = Transistor (power, audio frequency); F = Transistor (low power, high frequency); L = Transistor (power, high frequency); R= control and swithching device); S = Transistor (low power, swithching); T = thyristors; U = Transistor (power, switching); X = Diode (varactor, multiplier); Y = Diode (rectifier); Z = Diode (zener). So the BC547 is a Silicon low power, audio frequency transistor. Hope that helps!

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