Audiocom Superclock 4

[leo]

Hi Yves, welcome to AOS.

Can you pop into the welcome Section of the forum and say hello before the forum owners nab you

You can use an unshelded cable from the Superclock4 output but keep it short as possible, I'd personally take out any not needed Receiver stock XO parts which are seen on the output of the new clock, I can't say how things will react if leaving the stock parts in.
I just run a single red wire for DC input (taken from a point near the DC input socket ) and run a single blue wire to the nearest ground to keep it short

BTW Audiocom may be a little busy, Marks always provided excellent service so I'm sure he'll be in touch soon as possible

[leo]

I'd be very cautious about how most of those mods have been implemented http://www.lampizator.eu/LAMPIZATOR/...transport.html

[Alkerion]

Hi Leo,

I'll use the shielded cable that comes with the SC4, and for sure will keep it as short as possible.

I'll also use a shielded power cable and connect the ground as you suggest to a nearest point.

What's the benefit of soldering a cable between bottom pad of Y2 and right hand side of R104 ?

Some people also connect the clock directly to the Xilink, did you try that solution ?

Did you use an insulation part between the clock and SB board ? I don't see anything.

BR

[leo]

Hi Leo,

I'll use the shielded cable that comes with the SC4, and for sure will keep it as short as possible.

I'll also use a shielded power cable and connect the ground as you suggest to a nearest point.

What's the benefit of soldering a cable between bottom pad of Y2 and right hand side of R104 ?

Some people also connect the clock directly to the Xilink, did you try that solution ?

Did you use an insulation part between the clock and SB board ? I don't see anything.

BR

Hi Yves,

I run separate regulation to the spdif buffer IC etc, these get their supply from near the DC input socket too. I need to update the thread when i get time.
I run the Superclock4 directly to the Xilinx (as in no circuitry inbetween), its just in a different position to make use of the larger pads on the pcb, soldering onto the Xilinx pin would be best but I thought some may find this way easier. If you feel confident , soldering it directly onto the Xilinx pin would be good
Regarding insulation, I fitted a couple of plastic spacers with sticky pads one side and a tie wrap on the other, for now the clock just sits on them to allow easy removal for trying in other stuff , its enough to stop it shorting anything .

BTW, hurry up and get it fitted then let us know what you think

[Alkerion]

Hi Leo !

I've fitted the clock :


Connected the + IN directly to V IN of J1 and used the GND to shield the cable.

Connected the clock GND IN to the nearest SB GND, just 2cm of cable (the green one).

Removed the useless parts around the original clock and soldered the clock to R104.

Added a 470uF caps to pin 3 and 9 of J9 as it's done here :
http://www.lampizator.eu/LAMPIZATOR/...ort/sqb-21.jpg

I was a bit anxious to turn power ON and face some smoke, but everything went OK and music is playing :-)

In term of sound quality I haven't yet noticed any differences between original clock and SC4, will see the next few days if things change.

BR

[leo]

Hi Yves,

Thats surprising, feeding an external dac I noticed a difference soon as Superclock4 had been fitted , the sound quality was up and down during the first few days, things then started getting much better after about a weeks run in. I think those Oscon caps take time to bed in, Anyway see how you go with it and keep us updated

[Crom]

...I started off using a Burson clock which I've had a while, I added attenuation on the output because it was set for 5v where as the one needed for the Duet is 3v3

I realise I am resurrecting an old thread but a comment you made in this very interesting post (thank you, by the way) makes me think that you may be able to help me with a query that has been bothering me for a while: I have swapped out a couple of the clocks on a motherboard that I am using as an audio streamer to good effect - a significant uplift in sound quality - but the southbridge XO input requires a much lower waveform voltage that the TCXO that I am using gives out.

You mention that you attenuated the clock output. I need to do the same but I have tried various methods without success (Rod coleman kindly suggested I use a capacitor divider on diya but the waveform refuses to budge) - how did you do it?

Many thanks,
Crom