Why does nobody do ab anymore? Is it really that complicated? Is ab that much better tha b? Is it just higher draw for less output turns people off?
Yes, everyone had become conditioned that class c makes more watts from less amps.
When this one builder figured out that if you build a class c comp amp and design it to run at 20 volts you could get hugh numbers out of Toshiba's.
There a a old saying in the automotive industry, win on Sunday, sell on Monday.
Well he started cutting lips off and everyone wanted one.
Then came the clone wars, but the clone builders did not understand what they were doing, just copy and build.
Some could not get past tuning more than 2 transistors.
Things like negative feedback were bad because it got you less watts.
Regulated bias caused more amp draw that no one on the line cared about in AM for 20 second keys.
All of this was fine for guys in mobile rigs running motor mails @19 or 20 volts and only keyed for the belt, but not so much for daily drivers.
I remember a guy a long time ago here on the forum that Peek a boo built a very nice biased amp with regulated adjustable bias for him. He got on the forum complaining that it would not put out the watts his 8 pill class c amp did, and it was using more amps.
Some guy's just said screw it and stopped building biased amps.
It takes more parts, more effort, and a customer that understands what they are buying.
73
Jeff