TPA3116 / RuneAudio Project

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TPA3116 / RuneAudio Project

Postby skrodahl » 18 Jul 2014, 16:59

The new TPA3116 2x50w digital amp just arrived, and it's going to be part of a new project.

Here it is, in all its glory, with banana for scale:
Image

To bring it all together, I'm planning to use this enclosure:
Image

The plan is to stuff the amp, power supply, a Raspberry Pi B+ with HifiBerry, a phono preamp and a passive source selector inside the case. There's still a few bits and pieces awaiting arrival from China, so this may take some time. Still, it's a start. :)
-skrodahl

Muffsy Phono Preamp PP-3 || Audiobah TPA3116 || ESP P88 || ProJect Debut Carbon Espirit DC || RuneAudio / RaspBerry Pi / HifiBerry DAC || Dynaco A25
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Re: TPA3116 / RuneAudio Project

Postby skrodahl » 18 Jul 2014, 17:32

skrodahl wrote:...a Raspberry Pi B+ with HifiBerry...


Looking at the new RPi B+, it doesn't seem to have a P5 connector anymore. At least not where you'd expect it to be. That could pose a problem...

I did some searching around, and HifiBerry has the answer. It will not work. Luckily they are working on a HifiBerry DAC for the B+.
-skrodahl

Muffsy Phono Preamp PP-3 || Audiobah TPA3116 || ESP P88 || ProJect Debut Carbon Espirit DC || RuneAudio / RaspBerry Pi / HifiBerry DAC || Dynaco A25
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Re: TPA3116 / RuneAudio Project

Postby ACX » 18 Jul 2014, 19:47

Lol I didn't know the "banana for scale" meme :D
Cool project, have you also considered to add some cool features like a LCD display or a rotary encoder volume control (IQaudIO is developing it for its DAC)?
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Re: TPA3116 / RuneAudio Project

Postby skrodahl » 18 Jul 2014, 22:28

ACX wrote:Lol I didn't know the "banana for scale" meme :D
Cool project, have you also considered to add some cool features like a LCD display or a rotary encoder volume control (IQaudIO is developing it for its DAC)?


You may have noticed that I have a preference for vintage equipment. Some of the best stuff is hard to get by, but going old-skool with no frills or remote control is something I like to do. It has to be said that I'm considering an IR-receiver (I have the components at home) for the RPi as a viable option. Besides, MPDroid is also a remote control... :)
-skrodahl

Muffsy Phono Preamp PP-3 || Audiobah TPA3116 || ESP P88 || ProJect Debut Carbon Espirit DC || RuneAudio / RaspBerry Pi / HifiBerry DAC || Dynaco A25
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Re: TPA3116 / RuneAudio Project

Postby Midnight » 21 Jul 2014, 08:54

ACX wrote:Lol I didn't know the "banana for scale" meme :D

For sure this was not the idea of an engineer, because bananas differ greatly in size. So they are actually not qualified as scale :P :twisted: :ugeek: :mrgreen:
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Re: TPA3116 / RuneAudio Project

Postby skrodahl » 30 Jul 2014, 11:02

A few bits and pieces arrived, I will have to keep my RuneAudio RPi player in its separate enclosure due to space constraints.

So the amp will have the TPA3116 amplifier board, an active phono preamp. And then a passive pre with selector switch, volume and balance. And a power supply of course.

Here's the front panel, partially drilled to get the power button in. The 9V battery is just to demonstrate the LED in the power button:
Image

The TPA3116 amp and my newly etched CNC phono preamp. Still awaiting components for the pre:
Image

To round off, a picture of the enclosure with the lid on:
Image
-skrodahl

Muffsy Phono Preamp PP-3 || Audiobah TPA3116 || ESP P88 || ProJect Debut Carbon Espirit DC || RuneAudio / RaspBerry Pi / HifiBerry DAC || Dynaco A25
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Re: TPA3116 / RuneAudio Project

Postby jj.luoma » 30 Jul 2014, 12:38

Hi

Had to comment this post. I have same TPA3116 amplifier module inside this little box.
15012014350.jpg
15012014350.jpg (174.87 KiB) Viewed 14932 times

My next project is active WiFi speaker RPI+Runeaudio+2xHivi B3N.... etc. Maybe i will post some pictures when it's ready.
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Re: TPA3116 / RuneAudio Project

Postby skrodahl » 30 Jul 2014, 13:16

jj.luoma wrote:Hi

Had to comment this post. I have same TPA3116 amplifier module inside this little box.
15012014350.jpg

My next project is active WiFi speaker RPI+Runeaudio+2xHivi B3N.... etc. Maybe i will post some pictures when it's ready.


That's a high quality project. Love the volume knob, I've been looking for one just like that.
-skrodahl

Muffsy Phono Preamp PP-3 || Audiobah TPA3116 || ESP P88 || ProJect Debut Carbon Espirit DC || RuneAudio / RaspBerry Pi / HifiBerry DAC || Dynaco A25
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Re: TPA3116 / RuneAudio Project

Postby skrodahl » 30 Jul 2014, 16:28

A few more pictures from the construction.

Finalizing drilling of the back panel:
Image

Completed back panel, outside and inside:
Image

Image

Enclosure with finalized back panel:
Image
-skrodahl

Muffsy Phono Preamp PP-3 || Audiobah TPA3116 || ESP P88 || ProJect Debut Carbon Espirit DC || RuneAudio / RaspBerry Pi / HifiBerry DAC || Dynaco A25
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Re: TPA3116 / RuneAudio Project

Postby skrodahl » 01 Aug 2014, 14:31

It's alive!

Image

Image
-skrodahl

Muffsy Phono Preamp PP-3 || Audiobah TPA3116 || ESP P88 || ProJect Debut Carbon Espirit DC || RuneAudio / RaspBerry Pi / HifiBerry DAC || Dynaco A25
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