Electronics > Beginners
2 power supplies for a amp
<< < (6/6)
vol.2:

--- Quote from: fourfathom on October 10, 2019, 03:09:35 pm ---When running a lower-power amp near its limits you can get clipping of any transients which can produce tweeter-destroying amounts of high-frequency power.

--- End quote ---

Yes, my previous amp was overpowered and it worked fine at a middle volume. This new amp is also overpowered, but not by as much. Currently, the issue I'm having isn't clipping, it's the pop when I turn off the power.
dazz:

--- Quote from: fourfathom on October 10, 2019, 03:09:35 pm ---
--- Quote from: dazz on September 26, 2019, 08:35:43 pm ---1. Those are 40W speakers, so having a 100W+100W amp makes no sense, unless you want to blow your speakers.
--- End quote ---

It's not uncommon to use an amplifier capable of delivering more power than the speakers can handle.  When running a lower-power amp near its limits you can get clipping of any transients which can produce tweeter-destroying amounts of high-frequency power.  Obviously trying to run 100W into a 10W speaker will also cause problems, but it's not a bad idea to give yourself some head-room when choosing an amplifier.

--- End quote ---

Point taken. It's just that his speakers are 6 ohms, so a BTL TPA3116 would never get anywhere near clipping territory.
dazz:

--- Quote from: vol.2 on October 10, 2019, 03:19:45 pm ---
--- Quote from: fourfathom on October 10, 2019, 03:09:35 pm ---When running a lower-power amp near its limits you can get clipping of any transients which can produce tweeter-destroying amounts of high-frequency power.

--- End quote ---

Yes, my previous amp was overpowered and it worked fine at a middle volume. This new amp is also overpowered, but not by as much. Currently, the issue I'm having isn't clipping, it's the pop when I turn off the power.

--- End quote ---

https://youtu.be/s0vIM8kZx9M?t=420
vol.2:

--- Quote from: dazz on October 10, 2019, 03:23:40 pm ---
https://youtu.be/s0vIM8kZx9M?t=420

--- End quote ---

Thanks, that's an interesting idea. However, it seems a little sketchy because he's pulling the positive current to actuate the Mute function from a pin that TI specifically says not to draw on. He's guessing it's not effecting anything, but I don't have all the diagnostic equipment to tell if it pooches anything.

I wonder if there's a more "standard" way to implement the mute on startup/shutdown. (his circuit actually doesn't address shutdown)

Navigation
Message Index
Previous page
There was an error while thanking
Thanking...

Go to full version
Powered by SMFPacks Advanced Attachments Uploader Mod