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post #1 of 5 (permalink) Old 03-25-2002, 09:24 PM Thread Starter
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Amplifier terminology?

What does Class A and Class D mean when talking about amplifiers?




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post #2 of 5 (permalink) Old 03-25-2002, 10:34 PM
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Class A
These are the cleanest (ie... least distortion) amps made. However, I can't say I have EVER seen one for car audio. This class of amp is also the least efficient (most of the engery ends up as heat).

Class AB
The most common class of amp in audio, excellent mix of sound quality and efficiency.

Class D (Not to be confused with digital)
This class of amp has become popular of late. Very efficient, but produces the most distortion.
That is not really a concern though, the class D amps are designed to run subs in a small frequency range.
The amount of distortion subs can produce before you can hear it, is much higher than mids or tweets.
.
.
I really like the class D amps, for subs, they are very small for the amount of power they can produce. Sometimes 1/2 or even 1/3 the size of their class AB counterparts.

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post #3 of 5 (permalink) Old 03-26-2002, 08:43 AM
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James is right on.
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post #4 of 5 (permalink) Old 03-26-2002, 02:24 PM Thread Starter
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Thanks for the info guys. Looking at the JL Audio 500/5 today and noticed it is both a Class AB and a Class D amplifier so I guess you got the best of both worlds. Damn that thing just keeps calling me everytime I see it



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post #5 of 5 (permalink) Old 03-30-2002, 11:46 AM
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I bought a 6 channel amp one time to run "everything" a Phoenix Gold 600X6. I eventually added a seperate amp to run the sub. Depending on how much jams you want maybe two seperate amps will give you better power and adjustability. Just something I went through on my stuff.
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