[Psilonaught]

From the datao of LMR400, it's capacitance is lower than Canare which are 100pF to 84pF per meter, but HT is a bit lower than LMR400

So do we assume that the capacitance is what correlates with our perception of good, better best sound quality?

If so, then the messi & paoloni hyperflex 5 appears to have identical performance to the vaulted HT cable, just FYI

Capacitance per foot: 22pF for BOTH

 

[MartinWT]

So do we assume that the capacitance is what correlates with our perception of good, better best sound quality?

No, shielding and core purity would also play a part, as well as inductance.

You cannot select a cable on specs alone.

 

[Psilonaught]

No, shielding and core purity would also play a part, as well as inductance.

You cannot select a cable on specs alone.

Makes sense. The Messi cable does look decent however

 

[gimmeheadroom]

So do we assume that the capacitance is what correlates with our perception of good, better best sound quality?

If so, then the messi & paoloni hyperflex 5 appears to have identical performance to the vaulted HT cable, just FYI

Capacitance per foot: 22pF for BOTH

There are two forms of influence on impedance in A/C circuits, inductance and capacitance. Both have a big impact on waveforms, but inductance is likely to be low in properly designed coax and also, the installation does not include coils or loops.

 

[joenetic]

So do we assume that the capacitance is what correlates with our perception of good, better best sound quality?

If so, then the messi & paoloni hyperflex 5 appears to have identical performance to the vaulted HT cable, just FYI

Capacitance per foot: 22pF for BOTH

A perfect conditor is without R,L,C, smaller value is better in real world conditor, I can only find R and C in the spec I found, C is related to the dielectric of conductor and isolator in the cable, one of factor to affect the signal in the cable, of course it is not the only factor to affect the signal.

 

[OCC7N]

I spoke with Adrian about these. There will be two versions of each card. One with onboard 10mhz to 25mhz synthesizer on Pcb, another which will accept a direct 25mh clock input (from something like the sclk board) and no onboard synthesizer.

The external power input only powers the clock synthesizer. The cards with direct 25mhz input will not use external power.

Also, price of SFP card will be similar to the Ethernet card.

So this card is not natively running 10Mhz input or how. It goes through 10Mhz before it hits the 25Mhz?

 

[sajunky]

So do we assume that the capacitance is what correlates with our perception of good, better best sound quality?

No. Capacitance affect mostly current drawn from the driver. Engineers need this parameter to establish whether driver is capable of feeding the particular lenght of the cable. Longer cable, more powerful driver is needed.

And yes, the first response was 100% correct, the one that received my 'like'.

 

[Zaurux]

We can discuss the theoretical data of the cables, but we would just have to do a deeper analysis of each implementation. I leave it to you to judge the impact of the quality of assembly of the connectors. Depending on this, the theoretical data is totally modified.

 

[tdx]

Speaking of cables, I ended up going with a REF10 SE120, should be here in a week.
Does anyone have recommendations for a good 50 ohm BNC cable I could use between it and my DAC?

Thanks

 

[gimmeheadroom]

Congrats. Countless cable recommendations upthread.

 

[joenetic]

I tried to keep the switching power supply charger to charge the Li-ion batteries in my DIY master clock and played the music, I found the sound quality down grade just little bit, but not much, lost little bit detail, may be LT3045 regulator does it's good job to decrease the power noise? Happy with the master clock, will try some cables and update the experience.

 

[gimmeheadroom]

Depends on the implementation, a low noise regular is a good start but you still need a lot of capacitance on the output side.

 

[joenetic]

Depends on the implementation, a low noise regular is a good start but you still need a lot of capacitance on the output side.

Not a lot of, just few pieces on input and output of regulator, about 2000uF on each side.

 

[gimmeheadroom]

Not a lot of, just few pieces on input and output of regulator, about 2000uF on each side.

If you can see ripple on a scope or meter, consider cranking the output side capacitance up.

And, be careful to follow manufacturer recommendations if any bypassing is recommended. I remember in the old days, bypassing directly at the regulator pins helped a lot for LM78 series. I have no idea how things work today.

 

[duas2noites]

Does REF10 SE120 have same quality than afterdark and cybershaft best clocks?