Oh no, yet another reclocker option... how on earth am I going to keep track of all this? 😱
Accusilicon is very good. I have ordered ian’s Ultracap conditioner (3.3v) and will use it on ian’s fifoPi. The onboard regs on fifoPi is bypassed, so no regulation after the supercaps, which is a good thing (I think).
Hi Doede,
A Q3 fifopi is on it’s way to me, now resides in customs in the Hague. 🙁
Maybe (most probably) the first one in the Netherlands 😀
I do not use Tent XO but the Andrea Mori SC-cut XO.
By the way, in the pictures the latest version of my streamer part with battery supply and supercaps.
Regards,
Attachments
Good News,
Dick from Audio creative (Link to their Site) tested the new Q3 FiFoPi with the DIP-8 size Tentlabs XO clocks and used a DIP socket in between which is a great and clever trick to overcome the fact Ian moved the middle pin away in the new version. Below the DIP Socket he soldered two wires from the clock to the outer pins.
This combination works sound wise great with the DDDAC1794 setup – so good to know for everyone liking the Tentlabs XO clocks or even having them lying around from other projects 😎
Dick from Audio creative (Link to their Site) tested the new Q3 FiFoPi with the DIP-8 size Tentlabs XO clocks and used a DIP socket in between which is a great and clever trick to overcome the fact Ian moved the middle pin away in the new version. Below the DIP Socket he soldered two wires from the clock to the outer pins.
This combination works sound wise great with the DDDAC1794 setup – so good to know for everyone liking the Tentlabs XO clocks or even having them lying around from other projects 😎
Attachments
Has anyone been able to install and use Alsacap on rpi+Volumio?
Are there any instructions how to make / install / run Alsacap around please?
Thanks a lot
I have a question. On my DDAC 1794 the balanced outputs are connected via four capacitors (Jantzen Z-Siver cap 4.7uF). Is it a mistake? Can I connect them without a capacitor or a transformer (directly from a PCB) and only the singe ended outputs remain connected via two 4.7uF capacitors?
No it’s not a mistake. The capacitors are there to ensue DC is passed to the amplifier as some amplifiers do like that at all. There is a good sound upgrade if you replace the capacitors and use transformers
I have one more question. My friend has a two boards version, and a Cinemag 600/600 transformer at the output. The transformers are terminated on the secondary with 1k8 resistors. It doesn't sound nearly as good as my DAC with four boards and capacitors at the output. I temporarily replaced the transformers with capacitors and now it plays great, as does my DAC. What is the problem here?
Last edited:
SimonJ, you mean: The capacitors are there to ensue DC is not passed to the amplifier as some amplifiers do not like that at all?
As for the output with transformers, I’m a little skeptical now that I’ve heard this Cinemag.
As for the output with transformers, I’m a little skeptical now that I’ve heard this Cinemag.
Last edited:
Correct
You are not comparing like for like as the more boards you have the better the sound.
Why not put his transformers into your dac and try it?
It’s known that the best sound is direct then transformers then caps but you will need to try and see what’s best for your ears and system
System matching is important too
You are not comparing like for like as the more boards you have the better the sound.
Why not put his transformers into your dac and try it?
It’s known that the best sound is direct then transformers then caps but you will need to try and see what’s best for your ears and system
System matching is important too
my bad Doede.. but I would encourage others to check their status with Alsacap (not sure how I made it really.. I used some commands from terminal make / gcc / ./ to run..) as it appears my setup (rpi+kali+dddac via i2s) is not limited to 192000 files with latest Volumio. Now will need to tinker how to extend compatibility..
What is the purpose of these resistors? I would think the load seen by the DDDAC would be too low due to these resistors.
I have to try it all, that's why he gave me the DAC to determine what the problem is, because he is not satisfied with the sound, and he is not skilled in electronics like me. Sounds really bad, like a Chinese DAC of 30eur. 😕
These transformers have a peak + 3dB at 200kHz with a 10k load. For a flat frequency response, the load is 1k8. I will try with no load, then 10k, 4k7 ..., because I also think that 1k8 is too much load for DAC with two boards. I have no experience with line transformers, so I'm looking for advice. And if I can make it sound better than my device, I'll take the transformers too.
PS
I'm not sure what the peak is with no load on the secondary, so I'll probably start with 20k because the input impedance of the preamplifier is usually 20k-50k
Attachments
Last edited: