Class "A" sound, as related to Stereophile.



It's all about the sound.

It's all about sound, not how much it cost; when I got into "high end", I knew right off the bat I couldn't afford it, but I had to find one thing for sure; how do the various components sound in regard to Stereophile's classes, or ratings? In order to know this; I had to acquire the ability to identify "Stereophile's" class "A" class "B" and class "C" sounds, and the only way to do that was: first, subscribe to Stereophile, and next was to go to every high end audio salon within driving distance; there were 5 well stocked "high end" salons within driving distance. (Since I didn't take my wife, that created some problems)

After a few years of subscribing to Stereophile, plus auditioning equipment that Stereophile recommended, I knew the sound of those recommendations, and I absolutely concurred with them; "If you want to hear the music, you got to pay the piper". While that's true, it's possible to get class "A" sound with class "B" bucks or less.

At this moment, I am looking at 8 capacitors that cost $25 dollars each, plus 2 mono blocks with an instant resale value of 6K. Once I take the covers off and go in with my soldering iron, these mono blocks are worth a resell of O; my mission must be a success. After a successful mission, the resell is still 0; but those mono blocks will deliver class "A" or "A"+ sound, and that's some sweet music.

I have to visualize and hear music in my head before I can modify a component to deliver class "A" sound; but that's the only way for me to get what has become a necessity.

The pressure someone is under when they modify, is great, but the rewards are glorious. On these mono blocks, they are too small for the huge capacitors, therefore I have to figure a way to make the case larger. My reward is "sound" with absolutely no relation to money. I often wander if someone with a fat bankroll can identify the sound, or only how much they paid for each piece.


Happy listening.

orpheus10

Randy, I own Audible Illusion and CJ PV-12. The AI is class A, while the PV-12 is class B. Both are tube, and both sound good; the short answer is size and quality of the "sound stage"; the AI is more definitive and has a larger sound stage. They are also on opposite ends of the sonic spectrum; one is neutral while the other has a certain "tube glow". Class A contains a very wide quality range, as well as price range; however, it's pointless to buy one expensive piece if you can not afford to buy all the expensive pieces in the chain, because a chain is no stronger than it's weakest link.

I've heard incredible top of the line ARC, especially in regard to definition, but it's too lean for my taste, almost like SS, and I prefer "Primaluna" which can come close to ARC with the right tubes. There are a number of different factors in regard to Class "A" sound, and now I'm speaking of the same components that have earned the Class "A" rating; that is why you have many decisions to make before you plunk down a large wad of cash; such as tube, or SS, and all the things you prefer in a pre-amp. I don't know how you go about making all those decisions, but they are necessary.


Enjoy the music.
Hey o,

If you look closely at that DIY article that you linked, it gives the absorption coefficients at different frequencies for those 3 types of rigid board products. They are different at 125hz and 250hz. You might want to try to get a good handle how your room sounds in these frequencies and pick the one that best suits your desires in those ranges, if you have a choice on which you can buy locally.

Also, author says that he used 1"X2" furring strips for the frame but he also says that the Roxul he selected was "softer and has a less regular shape" that the others. I used 1" X 3" board with the Owens Corning rigid fiberglass and added some wooden corner supports inside the frame behind the panel for rigidity.

Best to you o,

Dave

Dave, I appreciate your advice; I'm going to purchase enough material to make a batch of them, and experiment on wall placement. With something like this, I've discovered nothing beats experimentation, plus good observation and record keeping.

A successful mission of this nature requires attention to detail and "patience".

I'm sure anyone who's following what we're doing will enjoy their music ever so much more after completion of this project,  I know I will.


Thanks for the heads up.