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does anybody know what this is?


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i am an idiot 
Platinum - Posts: 13,709
Platinum spaceThis member consistently provides reliable informationspace
Joined: September 21, 2006
Location: Louisiana, United States
Posted: November 03, 2009 at 6:02 PM / IP Logged  
Band Pass Filters
Band Pass filters allow a range of frequencies to pass above a selected crossover frequency and below another selected crossover frequency, filtering out all frequencies outside this band. In a first order (6dB per octave) filter, this consist of a low pass filter (coil) and a high pass filter (capacitor) in series with a loudspeaker. Narrow Band Pass Filters are to be used when the bandwidth is less than two decades.
does anybody know what this is? - Page 2 -- posted image.
 
spmpdr 
Copper - Posts: 456
Copper spacespace
Joined: March 22, 2009
Location: Oregon, United States
Posted: November 03, 2009 at 6:05 PM / IP Logged  
Thats what I figured ,I found them inside the metal body behind the kick panels in my truck they were hooked up on one end to the positive side of the factory speaker wire and the other end was cut away from the negative speaker wire .Does anyone have any idea what type of setup they would be used for?
-A vision without a plan is just a hallucination-
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