Reply to thread

Message

<blockquote data-quote="Ge0" data-source="post: 3696342" data-attributes="member: 582277">First of all, I&#039;m not responding to argue with you or flame.&nbsp; Just trying to check my own ideas and possibly learn something in the process.Don&#039;t knock me for stating the obvious.&nbsp; Obviously the point has not sunk in...Tons of distortion.&nbsp; Perhaps not.&nbsp; Define tons...&nbsp; Redundant transistors.&nbsp; Maybe.&nbsp; Depends on the goals of the design.Give me a break if I don&#039;t get this 100% accurate.&nbsp; It&#039;s late and I&#039;ve been drinking //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif.&nbsp; The SS class A series was not trimmed to run class A from the factory.&nbsp; BUT, these amps were the only in the REF series to have the bias POT populated.&nbsp; The others were fixed.&nbsp; You could trim it to class A if you wanted too.&nbsp; At least up until a certain point AND if you ran a reasonable load.&nbsp; I.E. not cheater loads.&nbsp; That was SS&#039;s marketing gimic...Correct me if I am wrong.&nbsp; I am not a professional amp designer.&nbsp; **** near every amp that is designed using a descrete input stage vs. integrated circuit is class A.&nbsp; ALL soundstream amps that I have ever looked at use the same input stage.&nbsp; This is the same type (though not identical) of input stage that is used in **** near every amp I have ever looked at (100+).&nbsp; Could this also be part of the marketing ploy?Why would a company bias a class A/B design to run class A?&nbsp; Seems like a waste right?&nbsp; It makes perfect engineering sense to me.&nbsp; Use the same basic board throughout your product line and make a few component substitutions/tweaks prior to shipment.&nbsp; This saves money believe it or not.&nbsp; You save money when ordering in volume.&nbsp; An odd ball design at the schematic and physical board level (which may have a lower component cost) will cost you more than if you modified a design you order in higher volume (that has a higher component cost).&nbsp; I deal with this stuff on a daily basis.&nbsp; I believe that I at least have a basic apprehention...Ge0</blockquote>

[QUOTE="Ge0, post: 3696342, member: 582277"] First of all, I'm not responding to argue with you or flame. Just trying to check my own ideas and possibly learn something in the process. Don't knock me for stating the obvious. Obviously the point has not sunk in... Tons of distortion. Perhaps not. Define tons... Redundant transistors. Maybe. Depends on the goals of the design. Give me a break if I don't get this 100% accurate. It's late and I've been drinking [IMG]//content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif[/IMG]. The SS class A series was not trimmed to run class A from the factory. BUT, these amps were the only in the REF series to have the bias POT populated. The others were fixed. You could trim it to class A if you wanted too. At least up until a certain point AND if you ran a reasonable load. I.E. not cheater loads. That was SS's marketing gimic... Correct me if I am wrong. I am not a professional amp designer. **** near every amp that is designed using a descrete input stage vs. integrated circuit is class A. ALL soundstream amps that I have ever looked at use the same input stage. This is the same type (though not identical) of input stage that is used in **** near every amp I have ever looked at (100+). Could this also be part of the marketing ploy? Why would a company bias a class A/B design to run class A? Seems like a waste right? It makes perfect engineering sense to me. Use the same basic board throughout your product line and make a few component substitutions/tweaks prior to shipment. This saves money believe it or not. You save money when ordering in volume. An odd ball design at the schematic and physical board level (which may have a lower component cost) will cost you more than if you modified a design you order in higher volume (that has a higher component cost). I deal with this stuff on a daily basis. I believe that I at least have a basic apprehention... Ge0 [/QUOTE]

Verification