My amp is dual tpa3116. Gain is 32 or 36. Sometime I use 6n3+6z4 preamp, gain no clue.
Amp 2*100W TPA3116 D2 Dual Channel Digital Audio Amplifier Board 12V-24V for Arduino - Newegg.com Aliexpress.com : Buy 2*100W TPA3116 D2 Dual Channel Digital Audio Amplifier Board 12V 24V from Reliable board profiles suppliers on uctronics | Alibaba Group
Preamp Yuan Jing Audio - ON SALE! - 6N3 + 6Z4 Rectifier Vacuum Tube Pre-Amplifier [Box] - USD $35.68
Amp 2*100W TPA3116 D2 Dual Channel Digital Audio Amplifier Board 12V-24V for Arduino - Newegg.com Aliexpress.com : Buy 2*100W TPA3116 D2 Dual Channel Digital Audio Amplifier Board 12V 24V from Reliable board profiles suppliers on uctronics | Alibaba Group
Preamp Yuan Jing Audio - ON SALE! - 6N3 + 6Z4 Rectifier Vacuum Tube Pre-Amplifier [Box] - USD $35.68
If so I will try the SE LP filter & if necessary the delay. In this case you don't need psu for the LP filter only for the delay.
Yes, but as per the JLSounds website, you will need to connect power to the 'clean side' from the 'dirty side'. Of course, the results will be compromised.
There is only one jumper, J1. This gives you the option to use the original muting circuit without Fabio's delay section. Just install the jumper and omit the timer circuit components.
Ray
Hello,
I don't like PC in audio, anyone would like to try AK4137 for a direct PCM to DSD conversion?
I'd like to buy a board like this in the next future:
AK4137 DAC SRC flagship high end audio 786K 32Bit DSD 256 DSD IIS conversion-in Integrated Circuits from Electronic Components & Supplies on Aliexpress.com | Alibaba Group
or like that:
AK4137 P2D??
if I'll find a Japanese audio friend that can help me to buy one directely in Japan.
Regards
Guglielmo
Italy
I don't like PC in audio, anyone would like to try AK4137 for a direct PCM to DSD conversion?
I'd like to buy a board like this in the next future:
AK4137 DAC SRC flagship high end audio 786K 32Bit DSD 256 DSD IIS conversion-in Integrated Circuits from Electronic Components & Supplies on Aliexpress.com | Alibaba Group
or like that:
AK4137 P2D??
if I'll find a Japanese audio friend that can help me to buy one directely in Japan.
Regards
Guglielmo
Italy
Group Buy Update
I have now sent out replacement PCBs to those who contacted me to say they hadn't received them from the original group buy. I am now assuming that everyone has received their boards.
As it turns out I needed to send fewer replacements than I expected so I have some spare boards if anyone needs any. I have eight flipflop boards and eleven single-ended. When they're gone they're gone.
Same deal as before. If you're interested send me a PM with your requirements and your location and I'll get back to you with a cost.
As I mentioned previously, these boards are from the second batch so the error has been corrected and don't have the tabs with the mounting holes.
Ray
I have now sent out replacement PCBs to those who contacted me to say they hadn't received them from the original group buy. I am now assuming that everyone has received their boards.
As it turns out I needed to send fewer replacements than I expected so I have some spare boards if anyone needs any. I have eight flipflop boards and eleven single-ended. When they're gone they're gone.
Same deal as before. If you're interested send me a PM with your requirements and your location and I'll get back to you with a cost.
As I mentioned previously, these boards are from the second batch so the error has been corrected and don't have the tabs with the mounting holes.
Ray
Hi there,
I'm going to complete the board, finally - just got the parts for the LP filter (a pair of honests 0.01 Wima and 390R TE connectivity MF res)
I'm still getting confused by muting...
I'd leave J1 open to use the delay circuit. For now, since I miss the 250k pot (can I use some another value? It seems hard to source) and the two 2N5551, I'll put a header with a cap on it.
I'd use (or try it at least) che TQ2-5V relay. How shoud I wire Mute1 and Mute2?
I'm going to complete the board, finally - just got the parts for the LP filter (a pair of honests 0.01 Wima and 390R TE connectivity MF res)
I'm still getting confused by muting...
I'd leave J1 open to use the delay circuit. For now, since I miss the 250k pot (can I use some another value? It seems hard to source) and the two 2N5551, I'll put a header with a cap on it.
I'd use (or try it at least) che TQ2-5V relay. How shoud I wire Mute1 and Mute2?
You have two mute options, with or without Fabio's adjustable delay circuit.
If you wish to use Fabio's delay circuit, populate all of the components and omit J1.
If you wish to use the original delay circuit omit the timer IC and bridge J1.
Mute 1 and Mute 2 are the connectors for the relay contacts so you connect one pin/pad of each to ground and the other to pin/pad to the signal line you want to mute.
Does that help?
Ray
Yep, thanks, as usual you're very clear.
So, I'll just solder the J1 header while I wait for transistors and pot, maybe desolder headers I put on Mute and wire them...
For now, this is my status quo:
EDIT: Shame on me! I didn't notice this scheme neither on that forum, neither here:
So...giusta.jpg)
Mute2 pin1 wires to ROut-
Mute2 pin2 wires to LOut-
Mute1 pin1 becomes ROut-
Mute2 pin2 becomes LOut-
Last edited:
As you've used an IC socket for the NE555 you can have both mute options available if you use a header and removable jumper instead of soldering a link across J1. That's what I have done;
An externally hosted image should be here but it was not working when we last tested it.
There's a schematic here;
http://www.diyaudio.com/forums/digital-line-level/273474-best-dac-no-dac-94.html#post4630381
No.
Mute 1 Pin 1 = channel 1 signal (or channel 1 output +)
Mute 1 Pin 2 = ground (or channel 1 output -)
Mute 2 Pin 1 = channel 2 signal (or channel 2 output +)
Mute 2 Pin 2 = ground (or channel 2 output -)
Ray