help selecting sub and amp
#22
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Location: Meridian Mississippi
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This has been known for years ,I've been in car audio for 25 years and this is one of the first things I was taught . I guess it's just the younger generation that don't understand it . They think a mono amplifier load is the same as a 2 channel amplifier bridged load , False . If you have a mono car amp , it is a one channel amp . If you hook a 4 ohm speaker to it , it see's a 4 ohm load , 2 ohm speaker to it , it see's a 2 ohm load Etc , Etc . When you bridge an amplifier , your taking the voltage from each of the channels and adding it together to double voltage to the speaker(More Power) . In doing so your also doubling the current draw on the amplifier , The amplifier "thinks it is trying to run a impedance load that is lower than what it is actually running . If you hook up an 8 ohm speaker to the bridged amp , The amp is running an 8 ohm load , but it actually "See's it as a 4 ohm load because of the extra current needed in bridged mode .
#23
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Just go outside and 1)take a dual 4ohm vc sub wire it in series and hook it up to a bridged 2 channel amp then 2)take the same sub wire each vc to one channel and see which is louder. I'll give you the answer..... door number 2. Why? Because, it is running at 4ohms not 8ohms and thus has more power.
Last edited by TURBOROADSTER; 03-12-2011 at 09:41 AM.
#24
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No , your not listening . That Bridged amp is actually" seeing" a 4 Ohm load when you hook that 8ohm series wired sub to it, thus putting out tha amps rated power at 4 ohm mono . So if the amp is 50x2 @4 ohm or 200x1 Bridged @4ohm .It would be getting 200 watts of power . Option one would be louder . This is what your not understanding . Door number 2 as you call it , would only be getting 50 watts per coil .
Last edited by ITSJ^Y; 03-12-2011 at 10:47 AM.
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