Class AB vs D

[528hz 10+ year member]

Jesus, where have you been?

 

[squeak9798 5,000+ posts]

Class A/B that is certainly less accurate than many class D's.

 

[squeak9798 5,000+ posts]

Yes, there is. You wouldn't put square speakers behind a bulkhead in your car if the goal was SQ though.

Why not? Gary Biggs did it with success in the toughest class of competition.

 

[squeak9798 5,000+ posts]

OP, there is absolutly no audible difference to be heard between classes of amplifiers.. period..



Anyone who tells you differently is either a liar or an idiot..

Sums it up quite nicely.

Most accurate (no pun intended) post I've read in the thread thus far.

 

[squeak9798 5,000+ posts]

Limited to noise, power, distortion, frequency response, and gain...yes they do, every single time, every single amp.
Many many more things to concern yourself about than the supposed "sound" of amp topology. For example, whether the RCA plugs are red and black or red and white. //content.invisioncic.com/y282845/emoticons/wink.gif.608e3ea05f1a9f98611af0861652f8fb.gif

//content.invisioncic.com/y282845/emoticons/word.gif.64b12e39f936af3b4fff38a1c0bd0244.gif

Highly accurate as well.

No one has ever been able to conclusively demonstrate an audible difference between amplifier topology. Period.

 

[rc10mike 10+ year member]

People who are so big into SQ but cant tell a difference between amps make me lol.

 

[squeak9798 5,000+ posts]

People who are so big into SQ but cant tell a difference between amps make me lol.

Why? Because we're not delusional? Because we understand and comprehend what can and can not affect what we hear? Because we're not drawn in my marketing claims?

What's even more //content.invisioncic.com/y282845/emoticons/hilarious.gif.02a037aad04aa96f19982b298a3d70a8.gif is the people who continue to believe in, and perpetuate, myths in the face of substantial evidence to the contrary.

 

[FoxPro5 5,000+ posts]

People who are so big into SQ but cant tell a difference between amps make me lol.

People that cannot grasp even the most simplest of arguments make me lol. All amps sound different. Who said they sounded the same? Who? Tell me, I need names, phone numbers, addresses, SSN's......

Reread the thread. Especially the part where at least myself stated, quite clearly, the fact that YOU CANNOT HEAR TOPOLOGY! No one has ever heard the class of an amp. EVER!! If you think you can, tell us what it sounds like! If I have an A/B amp and a D amp sitting next to each other, but I don't know which is which, how do I know which is which? What is the #1 "Class D" sound quality?? Define the parameters. You don't have to re-invent the wheel, just tell me what I should be listening for. //content.invisioncic.com/y282845/emoticons/rolleyes.gif.c1fef805e9d1464d377451cd5bc18bfb.gif

How effing hard is this to understand? Good Lord, people.

 

[FoxPro5 5,000+ posts]

Class A/B that is certainly less accurate than many class D's.

Hey! SQ roller coaster...weeeeeeeeeeee........... //content.invisioncic.com/y282845/emoticons/laugh.gif.48439b2acf2cfca21620f01e7f77d1e4.gif

 

[rc10mike 10+ year member]

People that cannot grasp even the most simplest of arguments make me lol. All amps sound different. Who said they sounded the same? Who? Tell me, I need names, phone numbers, addresses, SSN's......
Reread the thread. Especially the part where at least myself stated, quite clearly, the fact that YOU CANNOT HEAR TOPOLOGY! No one has ever heard the class of an amp. EVER!! If you think you can, tell us what it sounds like! If I have an A/B amp and a D amp sitting next to each other, but I don't know which is which, how do I know which is which? What is the #1 "Class D" sound quality?? Define the parameters. You don't have to re-invent the wheel, just tell me what I should be listening for. //content.invisioncic.com/y282845/emoticons/rolleyes.gif.c1fef805e9d1464d377451cd5bc18bfb.gif

How effing hard is this to understand? Good Lord, people.

A few here have stated that there is no difference, you re-read the thread.

Also, this thread is about if an A/B amp and D amp sound different, NOT about being able to tell which one is which by listening.

 

[thch 10+ year member]

so, +-1dB from 10hz to 20khz. that makes it the kansas of rollercoasters.

 

[squeak9798 5,000+ posts]

so, +-1dB from 10hz to 20khz. that makes it the kansas of rollercoasters.

It goes as high as 1.5db //content.invisioncic.com/y282845/emoticons/tongue.gif.6130eb82179565f6db8d26d6001dcd24.gif

Is it the worst amp ever? No.

Is it audible? Yes.

And it occurs over a relatively wide range of frequencies. The low frequency "hump" remains over 1db for nearly 3 octaves, the high frequency hump for nearly 2 octaves.

The point wasn't to claim the RF was a horrible amplifier. Certainly you could find significantly worse. Only that it's possible to find other amp topologies touted as "inferior" by some that would have "superior" frequency response performance and hence greater accuracy from a FR perspective.....partially nullifying their argument that "all class [insert A-H] sound better than class [insert A-H]".

 

[fast85_gt]

what class is the amp in my sig some say class t dunno

 

[thch 10+ year member]

It goes as high as 1.5db //content.invisioncic.com/y282845/emoticons/tongue.gif.6130eb82179565f6db8d26d6001dcd24.gif

+-1dB is the spread from the highest point to the lowest point. For this amp, you may very well be measuring the analog processing part of the amp and not the actual amplifier section.

of course this would seem to just reinforce your point, which I pretty much agree with. I think some other people might have seen the "huge" peaks and not looked at the scale.

 

[bl0ckd 10+ year member]

What have I created... hahah