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New alt but lights still dim


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netboy 
Copper - Posts: 108
Copper spacespace
Joined: March 02, 2004
Location: United States
Posted: July 29, 2004 at 6:39 PM / IP Logged  
yeah i know that cap wont help put out the max power of my alt, only keeping the rpms above 1500 will do that. i was just saying would a cap help for the times when my rpms do fall below 1500 and my alt isnt putting out max amps.
Memphis MC-1300
2 12" JLw6v2
Diamond audio M3 6x9
Diamond audio M3 5.25 components
Audio control Matrix
Carputer
haemphyst 
Platinum - Posts: 5,054
Platinum spaceThis member has been recognized as an authority in Electrical Theory. Click here for more info.spaceThis member has been recognized as an authority in Mobile Audio and Video. Click here for more info.spacespace
Joined: January 19, 2003
Location: Michigan, Bouvet Island
Posted: July 29, 2004 at 6:47 PM / IP Logged  
Nope... If the alternator is not there for the demand, the battery voltage will continue to fall, and the amplifier output will suffer. Physics dictate this. A cap is for IMMEDIATE current needs only... (bass notes) It WILL NOT fix a low voltage condition, which is exactly what is happening when your engine falls below 1500 RPM. The same thing can and does happen in my system (which you have seen) when I am sitting there idling, and I have 2F worth of cap. You can put the cap in, but it will not fix the problem you are describing. Only a higher idle speed or a "readjusted" voltage regulator. This would cause overvoltage conditions at regular engine speeds, though, so you don't want to do that.
It all reminds me of something that Molière once said to Guy de Maupassant at a café in Vienna: "That's nice. You should write it down."
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