Wednesday, August 17, 2011

Car audio amplifier and sub impedance question.?

yes it is stable @ 2 ohms x 1 channel. However note the amp is rated at 14.4 volts DC . The over all power output will drop dramatically at lower voltages . Also note most car stock alternators can not handle a 60 load added draw. It will shorten the life of the alternator and possible cause spikes in the system .They can affect other parts of the cars electrical system like the ecm module and on board computers. They need a constant 12.4 to 14.4 volt input to operate properly. You really need to upgrade the alternator to get the rated output of this amp. You need at least a alternator that has a 150 amp output to handle the load the amp with put on it . also i would upgrade the battery to a better load battery and add a cap as well . people often over look at what voltage a amp is rated at. That is a very important note . As with a added load a stock alternator will never get to 14.4 volts. Most alternators put out only 12.8 volts at idle to 14.4 80 to 90 Amps peak @around 4000 rpm A amp rated @14.4 will only putout about half or less of the rated output at 12.8 volts. rule one you have to feed the amp to get the output .. the less you feed it the less the out put will be at any ohm load. I try to only buy amps rated at around 13 volts . As it is easier toy get a electrical system to produce the power needed to make the rated output . Knowledge is from 15 years of sound system design and installation.

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