diyAB Amp - The "Honey Badger"

[JojoD818]

I guess I'm sticking with 11ma for the VAS at the moment, been playing all day long now and still holding at 59*C. I'm running the outputs stable at 100mA.

[Tony]

jim bonjiorno's GAS Ampzilla ran his amps with 25mA on the VAS......

[JojoD818]

I've opened one a long time ago and also aware of those high current VAS but I'm more concerned with the temp readings on this amp. So far she's been a dear all day long.

[Tony]

the Ampzilla's used TO-66 devices, not sure if still available, on bigger heatsinks, that is why they can operate that way...

[JojoD818]

Originally Posted by Tony

the Ampzilla's used TO-66 devices, not sure if still available, on bigger heatsinks, that is why they can operate that way...

Yup I remember they used TO-66 devices, not to mention some devices that are "proprietary" GAS devices.


And most of all, I remember it to really, really sound great like the DA Class AB prototype.

[Tony]

yes, the output trannies are as i recalled, 2n3773/2n6609 types, the ic biasing chip was a CA3046.....http://www.intersil.com/data/fn/fn341.pdf

[JojoD818]

Still have a sharp memory, me I only recall the great sound it made.

I think I only installed a soft start in there and fixed some minor issues too but nothing more.

[JojoD818]

BTT:

Those flying wires are for the dmm attached to each channel bias test point and the psu...

OS did a wonderful job indeed, cheers to you wherever you are mate.

[Tony]

OT: back in those days i was asked to decode the ic used....so happened i was working in a semiconductor firm maintaining K&S wire bonders....the control board used such ic and we had a lot of spares.....guess i was lucky.....

[Tony]

how is the sound compared to say a leach?