If you connect the hot and cold to the different channels you should connect the speakers between the 'hot' connections of each channel I'd think.
You use the two hot wires, but the one you use as your negative should be referenced to ground. You could wire it internally so that the grounds, are connected to the hot wire of the second channel. But I would do it externally.
I got this image off of Wikipedia.
I'm not sure these chips are designed to be bridged like this, but it should shut itself down if it isn't. I don't think trying it will hurt anything.
I got this image off of Wikipedia.

I'm not sure these chips are designed to be bridged like this, but it should shut itself down if it isn't. I don't think trying it will hurt anything.
Last edited:
Perhaps, you can start with this page:
Sjöström Audio - PA03 Pavel Dudek's deLuxe Gainclone
and let us know, what did you do and didn't work.
Sjöström Audio - PA03 Pavel Dudek's deLuxe Gainclone
and let us know, what did you do and didn't work.
If I were doing it, I would use the non-inverted diagram as the base to jumper JP1 and connect hot to JP2+ and cold to JP3+.
If upupa epops said its there then it should be there. U really need to read the instuctions by yourself ,dont wait for someone else to read it for you.
2 balanced inputs and use as stereo amp, yes.
I believe hfxrzw wants to use both channels as one balanced mono amp using one balanced input. This configuration is not covered in the text. So, this may or may not work.
I believe hfxrzw wants to use both channels as one balanced mono amp using one balanced input. This configuration is not covered in the text. So, this may or may not work.
2 balanced inputs and use as stereo amp, yes.
I believe hfxrzw wants to use both channels as one balanced mono amp using one balanced input. This configuration is not covered in the text. So, this may or may not work.
You could split the balanced line, and then bridge the output, I would think. But you might end up with really low impedance.
Or use the two outputs to bi-amp the speaker, but you would not get the bridged wattage out of it.
I still think using two amps on each side would probably be the best way to do it.
Or the easiest way would be to just convert the balanced line to unbalanced, and use it the way it was designed.
Sent from my HTC One M9 using Tapatalk
Sent from my HTC One M9 using Tapatalk
"I believe hfxrzw wants to use both channels as one balanced mono amp using one balanced input. This configuration is not covered in the text."
You are right Sir. Wish others would read the manual as well before commenting....
Meantime I'm none the wiser (on this 🙂)
You are right Sir. Wish others would read the manual as well before commenting....
Meantime I'm none the wiser (on this 🙂)
You aren't helping much either. I understand what he wants to do. He is asking the best way to do something that isn't in the manual. I'm just throwing out ideas that I would try in his situation.
I'm not the genius that designed the amp, but the guy who is, isn't answering his question.
If it is impossible why don't you tell us why? Instead of being condescending. Most of us are on this site to learn.
Sent from my HTC One M9 using Tapatalk
I'm not the genius that designed the amp, but the guy who is, isn't answering his question.
If it is impossible why don't you tell us why? Instead of being condescending. Most of us are on this site to learn.
Sent from my HTC One M9 using Tapatalk
I thought I asked a simple question. Doesn't seem to be the case....
That wasn't aimed at you. It's the guys that either know the answer, or won't admit that they don't that are bothering me.
I have no problem if anything I posted was wrong, but just say it, so I won't make the same mistake again. It won't **** me off, I want to learn about class D amps. That's why I ordered 2 of them.
nthall, I have no issues with what you wrote, no worries. I'm also trying to learn / understand better what is possible (and what not), but ......
I think he wants something like this:
https://www.google.com/search?q=bal...=I7_AVqa8OJeCjwP9lbvgBw#imgrc=ks5dGCjZINvG1M:
To configure the PA03 to a mono balanced input balanced output amplifier.
https://www.google.com/search?q=bal...=I7_AVqa8OJeCjwP9lbvgBw#imgrc=ks5dGCjZINvG1M:
To configure the PA03 to a mono balanced input balanced output amplifier.
I don't think he was looking for a balanced output, he just wants to create a mono block, with a single balanced input.I think he wants something like this:
https://www.google.com/search?q=bal...=I7_AVqa8OJeCjwP9lbvgBw#imgrc=ks5dGCjZINvG1M:
To configure the PA03 to a mono balanced input balanced output amplifier.
Sent from my HTC One M9 using Tapatalk
- Home
- Group Buys
- Pavel Dudek's super Gainclone group buy