Last edited by pepolman; 18-Jun-13 at 21:54.
The most up to date AI is on the forum site documentation area.
If you find absolutely nothing on the shopping area downloads, then you probably logged on with another account than the one you used when you orderd the kit.
So I need the board revision of the one you have and I can send the up to date schematic for it.
I will take a look at the AI and the connector table. I have a couple of AMP11 on the table so I could take new photos today.
Just checked. From rev 1.05 there are two more pins on J4:
J4 pin 11 = AGND
J4 pin 12 = PWRDN for the power stage. Connect this pin to AGND to mute the power stage. It has a pullup resistor R40 to 5V so the power stage will unmute if J4 pin 12 is left open.
I also updated the "J3" in the schematics. On earlier revisions, the input / output connector was split on two. Now joined into one, J4 so J3 does not excist any more.
I updated and emailed you the AMP11 docs a few hours ago. The wiki was closed and content moved to the Documentation area on this site, under Assembly Instructions. http://www.41hz.com/forums/content.php?48-AI-41hz
The site structure is shown here:
If you log on to the shop, go to My Account, Downloads tab, nothing there at all?
As pointed out, the power stage mute reduces stand-by power and can also be used to ensure quiet start-up. Any startup noise would originate from the modulator and power supply, not from the power stage. So if you keep the power stage off at start-up, it should be quiet when you turn it on.