Maxvla
Headphoneus Supremus
- Joined
- Dec 26, 2002
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So does that mean since we're using so little power it never switches? Electronics noob here.
So does that mean since we're using so little power it never switches? Electronics noob here.
In this case with an opamp as powerful as the opa541, to bias the amplifier significantly into class A at the rail voltages ray has specified will generate all sorts of extra heat
and change the slew rate characteristics of the amplifier. Detailed high resolution pictures have been posted by skylab that show no presence of either active or passive
current sources necessary to accomplish this. Nor the extra heatsinking necessary to handle this.
The issue of using a current source to bias an opamp into class A is probably more of a red herring than one might expect, as it probably does more
harm than good.
To have 40 watts of Class A (which the RSA website used to say, but no longer claims), youd need probably 100 pounds of heatsinks - I'd love to know the point at which the amp goes into B myself
The amp will not switch or cross to class B due to it's capability
I have made it clear to everyone who has asked me including Mike from Headfonia, that the DarkStar is running in class A due to it's ample power of voltage swing & current capability.
Having four amps as powerfull as those used in the DarkStar teaming together in balanced mode to drive any headphones is like a walk in the park for the DarkStar.
The amp will not switch or cross to class B due to it's capability.
Those who don't like it Don't Buy IT.
Originally Posted by johnwmclean /img/forum/go_quote.gif
Companies and manufacturers should be able to withstand any scrutiny and stand by their products no matter if it’s a potential customer or not. People here have an active interest in what’s commercially available and benchmarks companies achieve. They have high demands for a very competitive industry, they critique products for the better of our hobby. Heaven forbid if this wall of defence was to vanish.
But a wall of defense against what exactly?
s
john - a simple question for you. have you heard the dark star?
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Is there a point?