[DACLadder]

@jimmychan Did you get your DI20HEs to work OK with Gustard's 10M clock source? You mentioned that you had trouble a long time ago with the first HE. Thanks!

 

[rsbrsvp]

Can one OXCO clock be used to clock both the DI-20HE and the R-7HE?

What type of termination is needed for the power input? Is it a a 5.5mm standard barrel?

If I could have one clock and one LPS to power both clocks that would save a lot of money.....

 

[FredA]

Can one OXCO clock be used to clock both the DI-20HE and the R-7HE?

What type of termination is needed for the power input? Is it a a 5.5mm standard barrel?

If I could have one clock and one LPS to power both clocks that would save a lot of money.....

My unit has 2 sine outputs, plus one square one so it can feed 2-3 gears. It needs a 5.5/2.1 connector. I prefer the sine over the square out with it.

https://www.ebay.ca/itm/10MHz-OCXO-...ave/173448116014?_trksid=p2485497.m4902.l9144

You are good with a 12v/2a psu. I recommend to use with an ultra-low noise output. I use this one:

https://www.ebay.ca/itm/25W-TALEMA-...e=STRK:MEBIDX:IT&_trksid=p2060353.m2749.l2649

With a ghentautio silver-plated dc cable (5.5/2.1 to 5.5/2.1)

 

[DACLadder]

I need to get my 10M clock oscillator working. It is tough finding a clock source that fit all my requirements. I’m still looking around.

The Oscilloquartz OCXO board is good. Has two 50 ohm sinewave buffered outputs and does -120dBr/Hz @ 10Hz on phase noise which is commendable. Only tricky thing with it is the minimum input voltage requirement of about +12.5V. A regular +12V supply doesn’t work. And +15V may be too much. So finding a good power supply for it has been an issue.

i believe Kingwa specs sine wave 10M clocks for his inputs. Many Ebay products have square wave outputs so check before ordering.

 

[newabc]

I tried a 1 meter OCC(not silver plated) cable(made by MPS X-7 and MPS RCA plugs) between the source and DI-20. It is the shortest length of this model. Comparing to Audio-gd's Canare L-5CFB plus Canare RCA plugs, 1.5 meters, maybe because it hasn't been burned in, it is lacking some background details than Canare one. These background details have appeared with Canare one since the DI-20 got 10 days burn-in. Maybe the core of MPS X-7 is too thin(Canare one has a solid core), or the MPS plugs are not standard 75ohm or the termination is bad.

 

[rsbrsvp]

I see on Ebay there are some clocks with GPS. What in the world does that mean? They claim 2X more accuracy than standard oxco clocks?

They do not cost to much more? Are they worth it if they have sinewave output? Are they more complex to operate?

 

[frizzup]

Hi Dacladder,
This is one of the LPSU's that is use in my Audio setup. It's a 200W HDPlex and as you can see it has the ability to dial-in variable outputs for A and B. I use this for JCAT USB and Ext 10M clocks. It comes with the output cables. Also have 2 x 100W HDPlex one for each CPC and APC.

 

[JaMo]

The GPSDO (GPS Diciplined Controlled XO') corrects the frequency to 10MHz with reference to the atomic, very stable clocks in the GPS system. It still has to be a low phase noise XO inside the box. You can achieve a very good result also with a Ultra Low noise power source for the XO. The XO reacts instantly on voltage changes so a very stable Ultra Low Noise Linear Power Supply (LPS).

 

[Wynnytsky]

Hi Dacladder,
This is one of the LPSU's that is use in my Audio setup. It's a 200W HDPlex and as you can see it has the ability to dial-in variable outputs for A and B. I use this for JCAT USB and Ext 10M clocks. It comes with the output cables. Also have 2 x 100W HDPlex one for each CPC and APC.

FYI that 200watt unit is Larry's 3rd generation that is the only one you should keep (sell anything older than that)
The adjustable taps are 2amps each and the fixed taps are 10amps each.
The adjustable taps are special because only they have the LT3045 which makes the jitter 0.2mv (the fixed taps are 10-15x higher)
Larry said to deliver 2amps he needed to use four LT3045 in each one.

When powering a 19v computer I didn't hear a difference between the above HDPlex and my friend's Keces, but when powering a W4S Recovery the Keces was very different. Way smooth and relaxed -- substantial enough to change my choice of cabling. While nothing matches the brute power and flexibility of the HDplex, if you can live with 2 fixed taps then I would go with the Keces.

 

[Tango Sierra]

Does the DI-20 ACSS BNC output work when connected to a BNC input on a non-Audio-gd DAC? If it does work, will the audio quality be better than using an RCA S/PDIF cable with the non-Audio-gd DAC?

 

[FredA]

Does the DI-20 ACSS BNC output work when connected to a BNC input on a non-Audio-gd DAC? If it does work, will the audio quality be better than using an RCA S/PDIF cable with the non-Audio-gd DAC?

It is stated in the di20's manual that as long as the sensitivity is as needed and the input is 75 ohms, it will works better than the same cable using a voltage output. The needed sensitivity is 0.5VPP, which is the standard value, i presume.

 

[DACLadder]

Kingwa says his external clock inputs will work with sine or square wave oscillators. The range of signal amplitude is.0.3Vpp to 3Vpp. Pick which sounds best to you.

 

[DACLadder]

@frizzup The HDPlex 200W power supply looks great but looks to be end of life. Soon to be replaced with a 300W version according to a vendor. The 200W models are sold out on HDPlex web site. Anyway looks good if I could find a nice used one!

 

[Wynnytsky]

@DACLadder Do you have any links on that 300w LPS? I think it's better to score an LPS on jitter instead of amperage. When the DI20HE arrives I'm moving my 200w hdplex off the shelf (to the floor) to keep it's large EMF at a distance from my source gear.

if you do find one used, make sure the voltage dials are switched and not variable. Unfortunately the new units won't let you dial in a custom voltage like 12.5 .. 13.5 but those variable dials are only on the old versions which never got the low jitter transistors (and the variable dials would burn out which happened to my friend).

 

[rsbrsvp]

Help:

is a GPSDO clock going to give better results than a double oven OXCO? I know in theory it is more accurate but can the human ear hear the difference in a audiophile application?

I keep my stereo in a cabinet and It may be difficult to get gps signal..

Advice please....