Hi amigos,
I am in the process of making a new double MONO Class D Amplifier.
I got two mono 300W Board with a LLC 800W PSU double rail 60VDC.
I wonder what is the right wiring ? Picture 1 or 2 ? if other, can you correct in the below pictures.
unfortunately I did not find any assembly instructions...
I am in the process of making a new double MONO Class D Amplifier.
I got two mono 300W Board with a LLC 800W PSU double rail 60VDC.
I wonder what is the right wiring ? Picture 1 or 2 ? if other, can you correct in the below pictures.
unfortunately I did not find any assembly instructions...
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the 2 diagrams are effectively the same. just taken the ground to the PSU from a different ground terminal
And both are wrong 🙂
Do not connect speaker (-) to GND on the PCB.
The speaker (-) terminal should be connected directly to the PSU GND terminal!
Both GND terminals on the amp PCB are the same, so there is no matter which one you will connect to the PSU.
Can you provide a link to the amplifier modules?
Do not connect speaker (-) to GND on the PCB.
The speaker (-) terminal should be connected directly to the PSU GND terminal!
Both GND terminals on the amp PCB are the same, so there is no matter which one you will connect to the PSU.
Can you provide a link to the amplifier modules?
Attachments
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Here the link to the Amplifier :
Lusya Class D HiFi IRS2092 Power audio amplifier 400W 4ohm mono channel amplifier Assembled board + 60V T1068|Amplifier| | - AliExpress
As far as I know.... if the Grounds on the Amplifier board are shared :
it's the same thing to connect the Speaker (-) to the PSU ground or to the Amplifier board ground, is not it ???
What I read on the site :
So are you sure about your response ?
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Look at the back of the board... the two grounds are on the same foil land, so it doesn't really matter.
Attachments
If I consider your recommendations :
Can you confirm this is the right way to connect a double mono Board ?
Can you confirm this is the right way to connect a double mono Board ?
For powerful applications it is recommended the speaker (-) to be connected directly to the PSU GND to avoid GND loops on the amplifier PCB.
Connect the speakers to the amp connectors and of there are any problems, then make the connection, that I recommend.
Another recommendation: check if after the LC output filter and before the relay there is a resistor connected to GND. If there is not - solder 1-1.5k 2W resistor to always be connected to the output, just after the LC filter. It's needed for the properly starting-up of the amplifier, when it is switched-on.
Connect the speakers to the amp connectors and of there are any problems, then make the connection, that I recommend.
Another recommendation: check if after the LC output filter and before the relay there is a resistor connected to GND. If there is not - solder 1-1.5k 2W resistor to always be connected to the output, just after the LC filter. It's needed for the properly starting-up of the amplifier, when it is switched-on.
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Thanks, I will try the first option and then, if any issues : I will do that.
1000000000 thanks !
Hi amigos,
I finished my amplifier. Sounds really great BUT :
I have a Pop issue at startup... despite the fact that the cards have a relay on it.
It is like the relay works in reverse... I hear a 'tic tac" when I power OFF the Amplifier but not when I power ON. Any idea amigos ?
I finished my amplifier. Sounds really great BUT :
I have a Pop issue at startup... despite the fact that the cards have a relay on it.
It is like the relay works in reverse... I hear a 'tic tac" when I power OFF the Amplifier but not when I power ON. Any idea amigos ?