Hello,
I am building my first class D amp (5.1) and I am a bit confused about protection board.
I've used 3 stereo TPA3116D2 boards (Chinese one) and I also has bought 3x UPC1237 Chinese protection boards.
I am not really concerned about speaker protection, my main concern is the boot delay to avoid that big pop when I turn on the power.
First, I wired the UPC board as they are meant to be but as soon as I cranked up the volume, protection relay was triggered. It's seem to be caused by the fact that the TPA3116D2 board use a common ground. Vendor say that I need to use one protection board by channel.
So, I then try to only connect L+ and R+ to the UPC board and connect the two grounds directly to speaker. It didn't make the UPC to go in protection board anymore but left and right channel output the same sound.. I don't really understand why..
What can I use as a boot delay for these TPA3116D2 chinese boards ? I don't want to use 6 UPC1237 boards because of the space.
Thank for help.
I am building my first class D amp (5.1) and I am a bit confused about protection board.
I've used 3 stereo TPA3116D2 boards (Chinese one) and I also has bought 3x UPC1237 Chinese protection boards.
I am not really concerned about speaker protection, my main concern is the boot delay to avoid that big pop when I turn on the power.
First, I wired the UPC board as they are meant to be but as soon as I cranked up the volume, protection relay was triggered. It's seem to be caused by the fact that the TPA3116D2 board use a common ground. Vendor say that I need to use one protection board by channel.
So, I then try to only connect L+ and R+ to the UPC board and connect the two grounds directly to speaker. It didn't make the UPC to go in protection board anymore but left and right channel output the same sound.. I don't really understand why..
What can I use as a boot delay for these TPA3116D2 chinese boards ? I don't want to use 6 UPC1237 boards because of the space.
Thank for help.