class ab vs class d sound

Discussion Starter 1 Jan 3 2004. Sound quality of Class D vs Class AB amps.

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Joined Sep 17 2003 13 Posts.

. Lows were tighter while highs initially sounded less extended but they just sound different - cymbals are less splashy. The W-Audio is 200 the Behringer EP4000 is 300. It depends greatly on amplifiers used.

Class AB amplifiers may introduce some crossover distortion but they get closer to the ideal of Class A for most of its operating regime. Whats his opinion now. Up to 17 cash back Class A is always on but it takes 300 watts for every 100 watts to reach your speakers.

The signal is instantaneously amplified because the tube does not have to wake up. They use a series of pulses to generate the music which is then put through a lowpass filter to make it sound like music again. The author was an electronic circuit expert who designed amplifiers for the audio industry and he felt that these are compromised circuits in this setup and actually sound worse if different at all.

Between a well designed class AB amp Outlaw Aragon Perreaux Cinepro Rotel AB International and a well designed class D amp Crown XLS2500 I dont hear very much difference at all or at least any differences Ive heard could most likely be contributed to the comparison not being blind. The only real difference is one of efficiency - Class A can. With an AB on the outputs you have audio frequencies moving around directly where in D the thing is turning on and off thousands of times per second.

By the late 1990s Class D amps that rivaled and even bested the best high end amps existed from the likes of Spectron. Jump to Latest Follow 1 - 20 of 45 Posts. My first thought is that a class D would have less audible harmonics.

1 of 3 Go to page. Class D amplifiers are very different than class ab amplifiers which are more traditional. Class B design is a little more efficient but full of distortion.

Little signal in big signal out. Modern class D amps are every bit as good as class AB per the measurements and are better in many regards efficiency weight etc. Because current is maximum at all times the amp will.

I am not sure what class of amplification the W-Audio is its 2x420w 8Ω 2x 650w 4Ω 1300w mono bridged 8Ω. From a less than full operational state. While a Class AB amplifiers efficiency improves as it approaches maximum output Class D designs maintain a high efficiency rating over the majority of their operating range.

As a result real world efficiency tilts further in their favor. The tube is ready to amplify the signal at all times. I recently borrowed a W-Audio DA-1300 power amp and found its sound quality a little rough compared to home audio amplifiers.

In short it is making a larger identical signal. Class AB design offers power efficiency and good sound. Answer 1 of 6.

The EP4000 is class H. They are still Class AB amps but operating as Class A into the 25 50 sometimes even 100 watt range. Class A design is the least efficient but has the highest sound fidelity.

About Class D Amplifiers Class D amplifiers take it a step further and they are even more efficient and less hot than their AB counterparts. Im very surprised that BASH amplifiers arent more common these days. My first thought is that a class D would have less audible harmonics.

Not surprisingly Arnie Nudel from Infinity was at the helm and he made the first Class D in the 1970s. The bonus is efficiency. Class D design has the highest efficiency but isnt quite as high-fidelity.

To me class D sounded smoother and less splashy darker than class AB. Paul has long said he prefers the sound of Class AB amplifiers to that of Class D but recently PS has launched some Class D hybrids. Class D amplifiers are models of efficiency but with a loss of detail and fidelity Class B amplifiers generally introduce some crossover distortion but move away from Class D G and Hs extreme non-linearity.

While a regular class AB amp might be 30-50 efficient a Class D amp will be 80-90 efficient - that is how much of the wall juice actually turns into music. For class D to amplify without distortion the switching of the class D amp must be orders of magnitude faster than the frequency of the highest freq signal to be amplified ie. In Class AB you have actual audio coming through the entire amp where in D its converted to a PWM signal at some point.

Class D amps are digital. Class A is inherently less linear but there are plenty of ways to counteract that. Class AB makes the input signal and output signal identical and every step of the way.

A 30 watt Class A amp will sound louder than a 30 watt Class AB amp. Has class D switching amplifiers come of age enough yet to seriously challenge the superior sound of class AB amplifiers. Theres nothing inherent in either design approach that says anything about sound quality.

Midrange was better but lower midrange was leaner had to change speaker cables. In Class AB you have actual audio coming through the entire amp where in D its converted to a PWM signal at some point. The subs all have BASH amplifiers which have a Class D front end and a Class AB back end - so you get the minimal power draw associated with pure Class D amp designs yet you retain the traditional sound of Class AB amplifiers.

By doing so class AB amplifiers can keep a higher level of audio fidelity closer to class A amplifiers while staying cooler and more efficient like a class B.

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