Teralink X2 clock mod. with Tentlabs XO
Hi to all.
After longer use in my own DAC project and studying the circuit, i thought about some X2 modifications.
1st was the PSU.
The +5V line is now driven by one of my +5V Salas shunt reg. modules,
witch gave a big step forward in SQ.
A 2nd shunt reg. for the 3.3V line is nearly ready to fire up.
I am really curious about this step. :)
2nd was the adding of an USB-Isolator between my iMac and the USB input.
You could read a small review here.
3rd step yesterday was the clock on the X2, witch i swapped to a Tentlabs HighEnd XO.
Here a short descripiton:
Desoldered original TCXO.
DIP14 socked with additional RF choke and decoupling cap.
Tentlab XO in position.
All three mod. shift the SQ to a higher level and are highly recommended.
nice work! I also have a Teralink and was pretty underwhelmed by its performance in the beginning, but now, after burn-in and with a shunt its really nice.
Is the Tent-Clock also working with 5V?
Please tell all of us about the 3.3V shunt thng, this is also what I am planning to do, but always good when someone else can share experiences first.
I guess the ADUM chip would benefit from a shunt, too...
The Tentlab XO runs also with +5V, yes. So itīs very easy to integrate it on the pcb.
As we have two voltage lines in the X2 (+5V & +3.3V), i am planning to feed the +3.3V line also with one of my
shunt modules and get rid of this onboard 3.3V line regulator.
For this, the +5V shunt module must be lightly modified, as you could see on the photo above. Thatīs all.
I was told that for 3.3V operation for the shunt board, output cap and the cap near the trimmer can be change to 47uF and 1000uF-2000uF for better bandwidth...I did this and it works well.
heat sink is hot (60-70°C) but works fine, maybe because of the high Vi.
BTW do you have M2Tech hiface to compares with the X2 after this mod???
for my DAC i use only I2S input, so only the M2Tech hiface-EVO works.
I donīt have a hiface-EVO and couldnīt do this comparsion, sorry.
Btw there is another GB from Quanghao for low voltage shunt boards, the 1,5-5V version is included. I have them here, nice and easy to work with and reasonably small, including rectification and smoothing cap. I am so happy about these Salas shunts, big big sound for small small $$$...
I would also be interested in a comparison M2tech and Teralink; biggest advantage for the Teralink is the possibility to use the Adum isolator, and it is easier to tweak, due to its size.
So far I really like the Teralink, but i do not have something to compare it to...Changing the little green 0,1ĩF caps in the output and the resistors for something better also gave a nice improvement. I had some nice film/foil caps and 330R/100R Takman resistors in the box, so no big deal to try out.
USB isolator & 192khz/24b
i can't see very clear the lead position of the ferrite bead and the wima caps on the adapter.
can the x2 handles 192khz/24bit data?
Here is the overview of the lead positions
The X2 can handle up to 96KHz/24bit.
Hi, What a amazing work, I have an External Teradak DSIX + Re-Clock board, do you think the TXCO can be swapped like you did? Thanks.
BTW for this kinda mod can it be applies and implemented to every digital devices with a XO like a CDP or maybe a DAC board or any usb converter?
Regarding you USB isolator is it necessary to runs it with a Independent shunts?
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