I would like to do a volume controlled output RCA for a sub amp>. Where would I connect the RCA s to? Im having issues of where to connect it.
Thanks.. I may have poorly posed this question. I have a integrated 3116 with volume and speaker outs in box.
I want to add sub outs to box, with the volume controlling the output level on rca to sub.
so on the inside of my integrated 3116, I need to add rca out to sub?
Jon
I don't quite understand, do you have the volume pot in the board or a separate one? If it is separate, I think you can connect the sub out to it's output pins.
From your rather condensed question I understand: You have a TDA3116 amplifier with a volume control and you would like to add a signal output (for a sub-woofer) that is also controlled by the same volume potentiometer? Correct understanding?
You all know how that goes... You want to build a couple of small desk speakers with a bluetooth amp inside it. So, I have gone off to eBay and bought: New TPA3116D2 Bluetooth Amplifier Board Class D 120W*2 Amp Board | eBay
And then I found this thread...
Any suggestions for a nice power supply to run this off? And has anyone built something like this in a small speaker and how did you keep those buttons accessible?
And then I found this thread...
Any suggestions for a nice power supply to run this off? And has anyone built something like this in a small speaker and how did you keep those buttons accessible?
FauxFrench. In the quote of his post, last lines
"I also paid around $5 for a complete board where nothing needs replacement or add-on. My board sounds about as good as my 2x30W Marantz. Absolutely value for money"
One similar to the item I tried:
TPA3116D2 HIFI digital 2 power amplifier board TPA3116D2 dual channel stereo power amplifier board DC10 25V-in Integrated Circuits from Electronic Components & Supplies on Aliexpress.com | Alibaba Group
And, an even cheaper implementation with less good capacitors:
50Wx2 TPA3116D2 Dual Channel DC 4.5 27V Digital Power Amplifier Board Two Channel Stereo High Efficiency-in Integrated Circuits from Electronic Components & Supplies on Aliexpress.com | Alibaba Group
TPA3116D2 HIFI digital 2 power amplifier board TPA3116D2 dual channel stereo power amplifier board DC10 25V-in Integrated Circuits from Electronic Components & Supplies on Aliexpress.com | Alibaba Group
And, an even cheaper implementation with less good capacitors:
50Wx2 TPA3116D2 Dual Channel DC 4.5 27V Digital Power Amplifier Board Two Channel Stereo High Efficiency-in Integrated Circuits from Electronic Components & Supplies on Aliexpress.com | Alibaba Group
Many thanks. Can you verify this unit is set to 26 dB gain? I imagine it is given it's quiet nature.
A friend is having a bear of time with a noisy TDA7492 and I've only been following 2.1 amps. So I needed a recommendation on a 2.0 unit.
Honestly, I do not know about the 26dB. The SMD resistors are terribly small. When I put 4.7KOhm resistors from the volume potentiometer mid-terminal (amplifier input) to ground I have no hiss.
I have experimented with many cheap class D chips and none really make much noise if they are operated from a low impedance pre-amplifier (I use a good quality headphone amplifier). Most OP-AMPs can drive 600Ohm so there is no need for 50KOhm.
I have experimented with many cheap class D chips and none really make much noise if they are operated from a low impedance pre-amplifier (I use a good quality headphone amplifier). Most OP-AMPs can drive 600Ohm so there is no need for 50KOhm.
Last edited:
I tried to fix noise of my amp Breeze Audio BA100 (TPA3116 2*100W)
I thought there 50k potentiometer and wanted to replace it to 10k
But I disassembled my amp and there 5K was installed. So I have no idea how to fix noise now. Any ideas?
I thought there 50k potentiometer and wanted to replace it to 10k
But I disassembled my amp and there 5K was installed. So I have no idea how to fix noise now. Any ideas?
With the volume turned fully down and no signal, do you hear hiss (white noise) or hum (a lower single frequency)?
It is immediately possible to hear (you do not do a particular effort to notice the noise)?
Apart from that noise, the amplifier seems to work?
It is immediately possible to hear (you do not do a particular effort to notice the noise)?
Apart from that noise, the amplifier seems to work?
Yes, if volume set to 0 noise also exists. The noise is like hiss. From tweeters of loudspeakers.
This hiss can be easily hear from about a meter from loudspeakers.
I tried different power supplies 12v, 24v, batteries - anyway hiss presents even w/o input signal connection, just loudspeakers.
If increase volume then hum appears from low-frequency, but I think hum is not a big problem, the problem is hiss.
Amplifier works good, no problem except this hiss
This hiss can be easily hear from about a meter from loudspeakers.
I tried different power supplies 12v, 24v, batteries - anyway hiss presents even w/o input signal connection, just loudspeakers.
If increase volume then hum appears from low-frequency, but I think hum is not a big problem, the problem is hiss.
Amplifier works good, no problem except this hiss