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406  Ultimate Audio Playback / Cables (Community induced) / Re: Cables with BNC Connectors/Adapters Are Generating A Superoir SQ on: September 13, 2014, 10:13:49 pm
Again from that PDF on the top it mentions something about steel on top, but the details it mentions the inner conductor is silver-copper.

'silver-coated copper-clad steel wire'


Hi,

the above is the correct term. (see ASTM B 452-09, for electronic applications)

------------------------

I went through all technical datas of the Huber+Suhner cable families, and the ENVIROFLEX and K - types are covering our application best.

When I have a look to the attenuation diagrams (see above from nik.d), and see where  the audio frequency is working, the curves of the cables are not that far apart.
The capacitance of both families is nearly the same (94pF/m & 96pF/m).

I think it will not a big mistake if we stick to the K_02252_D.

My proposal: If somebody wants to climb to the top he may test the K_02252_D60 and write his experience.

When we have a look to the weight and the diameter of the conductor of the cables, the _D60 is ......... .

Joachim
407  Ultimate Audio Playback / Cables (Community induced) / Re: Cables with BNC Connectors/Adapters Are Generating A Superoir SQ on: September 13, 2014, 06:45:50 pm
Hi Joachim, I was talking about the actual BNC connectors for the wire, and not the BNC-RCA adapters (although I'll certainly look into getting a couple of pairs of H+S adapters too).

Having done a search, I think I'll need a couple of pairs of these:

http://www.hubersuhner.com/ProdDet/2761105

Mani.

Hi Mani,

yes, that's the right ones.

Joachim

The cable you ordered has the same capacitance with 96pF/m and a lower operating voltage as the mat'l combination CuAg, and both cables are double shielded. That is the identical cable I have.
408  Ultimate Audio Playback / Cables (Community induced) / Re: Cables with BNC Connectors/Adapters Are Generating A Superoir SQ on: September 13, 2014, 06:07:17 pm
Hi, see this cable on Ebay.com

K02252D HUBER SUHNER TEFLON 50OHMS CABLE

and buy the appropriate BNC connector from Hubner+Suhner .......

Hey, thanks Joachim. I've just gone ahead and ordered 20m. Do you happen to know where I can get the Huber + Suhner 50 Ohm BNC connectors? Also, will I need a special tool to fit the BNC connectors?

Mani.


Here,

the connectors

http://ecom.hubersuhner.com/ecomm/products/Radio-Frequency/RF-Adaptors/pcat-4/index.html


Joachim

Edit:

http://ecom.hubersuhner.com/ecomm/distributors/our-distributors.html

Cable assembled to connector via Crimp technique, see page

http://literature.hubersuhner.com/Technologies/Radiofrequency/RFCablesEN/?page=74

409  Ultimate Audio Playback / Cables (Community induced) / Re: Cables with BNC Connectors/Adapters Are Generating A Superoir SQ on: September 13, 2014, 05:34:04 pm
Thanks Joachim, I'll look for a cable made with solid copper instead of stranded.


Hi, see this cable on Ebay.com

K02252D HUBER SUHNER TEFLON 50OHMS CABLE

and buy the appropriate BNC connector from Hubner+Suhner ............. .

Joachim
410  Ultimate Audio Playback / Cables (Community induced) / Re: Cables with BNC Connectors/Adapters Are Generating A Superoir SQ on: September 13, 2014, 05:08:01 pm
Okay, is this cable what you folks are talking about and does the length matter?

http://www.sweetwater.com/store/detail/BNC58-3

Hi,

this cable should work for our intention (low budget price), and for longer distances as well. Let us say <20m minimum.

see datasheet attached. The capacitance is 101pF/m.

The conductor of this cable is a "stranded tinned wire", which is not the best material/conductor for our purpose.


Joachim
411  Ultimate Audio Playback / Cables (Community induced) / Re: Cables with BNC Connectors/Adapters Are Generating A Superoir SQ on: September 12, 2014, 07:48:56 pm


It says so in this post, including the mention of loss of gain:http://www.phasure.com/index.php?action=post;quote=32240;topic=3026.0;num_replies=68;sesc=1f48dd3a878ffdfd1e9814fa31887d94



Hi Coen,

I'm back with the XXH volume (gain) to my normal setting between -33 and -31,5 for my accustomed SPL.
("burn in" of the cable or hallucinations?? During the night the ear reacts different.)

Joachim.
412  Ultimate Audio Playback / Cables (Community induced) / Re: Cables with BNC Connectors/Adapters Are Generating A Superoir SQ on: September 11, 2014, 06:02:26 pm
Calculation of (normal audio) cable attenuation

see:

http://www.sengpielaudio.com/calculator-cable.htm
413  Ultimate Audio Playback / Cables (Community induced) / Re: Cables with BNC Connectors/Adapters Are Generating A Superoir SQ on: September 11, 2014, 04:23:51 pm

The 50 Ohm Huber + Suhner cables (the ones I've just ordered and the ones that Joachim is using)



 good good good
414  Ultimate Audio Playback / Orelino / Orelo MKII Loudspeakers / Re: In anticipation of my "nearly" new Orelino Speakers on: September 11, 2014, 01:35:59 pm
Congratulation,

as Mani wrote, but with strong assistants, some special refreshments and in anticipation of the final result it will be a piece of cake.

Joachim
415  Ultimate Audio Playback / Cables (Community induced) / Re: Cables with BNC Connectors/Adapters Are Generating A Superoir SQ on: September 11, 2014, 11:05:56 am
Hi,

attached a file from a Dartzeel manual with their arguments for the choice for  a coaxial BNC cable.

Keywords are:  “external disturbance immunity”, “virtual absence of losses” and “without any sonic alterations”

This seems to be the explanation for the superior SQ with the BNC cable, but their “impedance matching” does not cover our case.

Joachim
416  Ultimate Audio Playback / Cables (Community induced) / Re: Cables with BNC Connectors/Adapters Are Generating A Superoir SQ on: September 11, 2014, 09:31:06 am
Quote
BTW this is the 'impedance mismatch' Joachim pointed out in his last post,

Btw, "impedance matching" does not exist.


Hi Peter,

all this are "keywords"  for a search within BING or Google. They were discussing this theme in the forums of CA + Audiogon too.

Joachim

EDIT:
If we are looking for a problem in the internet with keywords, we get thousands of informations, and 99,9% are not covering our search.
So we have to filter, and we will find in one article a paragraph or sentence for our problem only, and this goes on and on and on and in the end the “puzzle” is completed.
417  Ultimate Audio Playback / Cables (Community induced) / Re: Cables with BNC Connectors/Adapters Are Generating A Superoir SQ on: September 11, 2014, 12:54:41 am
Hi,

I was searching the internet with the following keywords:

"impedance matching preamp power amp"

and there are tons of informations, most of them "driving" in the same direction.

In Audio no "impedance matching" is necessary. (in general: source [DAC] impedance shall be very low + load impedance [power amp] shall be much higher, more > 1:10)

The best article for "mechanics" I found is here:

http://www.soundonsound.com/sos/jan03/articles/impedanceworkshop.asp


Joachim
418  Ultimate Audio Playback / Cables (Community induced) / Re: Cables with BNC Connectors/Adapters Are Generating A Superoir SQ on: September 10, 2014, 06:45:09 pm
Impedance Matching

comment from the manuf. NuFOrce see:

https://www.nuforce.com/index.php?option=com_k2&view=item&id=635:impedance-matching

Edit:
For a mechanical guy the above explanation, identical found on other homepages too (ratio source/load = 1:10), is quite sufficient. The (my) combination NOS1 and power amp satisfies this ratio and I do not have to increase the XXH volume.
I hear no distortions in the highs and lows, they are better than before. The “clicks” on the cymbals are better to follow and the bass is very tight (no wobblings and rumble at the subwoofer anymore).


Joachim
419  Ultimate Audio Playback / Cables (Community induced) / Re: Cables with BNC Connectors/Adapters Are Generating A Superoir SQ on: September 10, 2014, 06:20:37 pm
-Quote-
Characteristic Impedance

Characteristic impedance is a high-frequency phenomenon that is a function of the "distributed" R, L and C (inductance and capacitance per unit length). Characteristic impedance Z0 is calculated as (Lu/Cu)1/2 . Lu and Cu are inductance and capacitance per unit length. From the Z0 equation, you can see that Z0 is independent of the length of the cable, the frequency and the resistance. This behavior holds true only if the wavelength of the frequencies on the cable is much shorter than the transit time of a signal from one end of the cable to the other. When this is true, the characteristic impedance will stay relatively constant regardless of the length of the cable and the cable will exhibit "transmission-line-effects". In general, if an event is so fast that it completes a significant voltage transition before it is noticed at the far end of the cable, this will cause transmission-line-effects to occur. Transit times are very short for typical audio cables. For example, a 20 foot speaker cable has a transit time of around 40 nanoseconds. In order for transmission-line-effects to occur on this cable, signals at frequencies above 25MHz must be present. This is orders of magnitude higher than audio frequencies. Therefore, transmission-line-effects and characteristic impedance are definitely second-order effects on audio cables, however resonance may play more significant part than previously imagined and this relates to termination of the characteristic impedance.

-Unquote-

Original text see here:

http://www.empiricalaudio.com/computer-audio/audio-faqs/should-i-match-impedances
420  Ultimate Audio Playback / Cables (Community induced) / Re: Cables with BNC Connectors/Adapters Are Generating A Superoir SQ on: September 10, 2014, 07:55:48 am
So what about those of us who are fully balanced? Are there any lessons here that can be applied to XLR?

Hi,

it seems that the double shielded cable (note from Paul + Peter) has the major impact (influence) to the SQ.
I found a sample picture (see the lower one) how to assemble such a XLR connection with that cable. Please get in touch with an expert and ........ .

http://www.mediacollege.com/audio/connection/xlr-rca-1.html

You are the first guy to test such a cable with the XLR connector.

kind regards

Joachim
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