Pro Audio Design Forum

The nominal supply voltage is 27.5V, but it has to operate down to 17V. To minimize power dissipation (so it will work at higher temperatures), I am trying to keep the supply at 7 volts. OK. 7V rules out the 1646 since the minimum is 8V. If the elevated temperature requirement didn't prevent it you...

Jeff - I drove a 150 Ohm Edcor primary with no problems using the 1646. The output produced up to +24 dBm.

Is this 28V single-supply?

Hi Jeff - Thanks for joining us! https://www.ka-electronics.com/images/jpg/THAT1646_Current_Boost.JPG The 1646 in the current-boosted application shown above using "common mode drive" (sense inputs driven - both outputs tied together) does not have OutSmarts enabled. The outputs do not hav...

Here's the corrected schematics. Thanks pierom! Very clever Photoshop work!



Here's a wider image for archiving:

https://www.ka-electronics.com/Images/S ... rected.JPG

https://www.ka-electronics.com/Images/jpg/MC14583_Pinout.jpg I was contacted with another error in the SSL Phase Meter Schematic. R22 and R24 each connect to pin 9 of T5 and T6. I caught the error on T5 but missed the T6 one. Both are the Ain inputs. Piero from Italy e-mailed me and noticed that R2...

Are you able to get good delivery times on audio taper?

So they're a push/pull switch or momentary pushbutton? I've never seen those. They're beautiful switches.

What's the sleeved component on the back of the switch?

Pete -

What are the gold thingy's, mute switches?

Wayne

Thanks for sending this Pete! NIce build. Thanks for taking the measurements.

Wayne

John -

That's a nice circuit. I started liking it from R26 and R27 onward. It's not often you see series resistors to limit ripple current but the capacitors sure appreciate it.

Wayne