Screende shielded cable (do they work?)

[gasolin]

To my surpise *help* i noticed a weak high pitched sound from my left yamaha hs7, so i tried to mange my cable, interconnetcs and power cable.

Nothing without the cable, i use almost standard klotz cable https://shop.klotz-ais.com/8007-at-cc.html https://shop.klotz-ais.com/8011-at-cj.html

I was thinking about these cable to upgrade so i get better screened,shielded cabel and therfor less likely to get high frequency noise https://shop.klotz-ais.com/8008-alp.html https://shop.klotz-ais.com/8002-alpp.html according to klotz they are in a much high class,grade,quality and they say it's double screened cable, price isn't to bad realative to what i paied for my current cable and it's surpreme grade cable, mine pro, there are 3 cable inbetween, 2 of them in the samme quality,grade.

What is your experience with shielded,screened cable?

Do they work?

 

[drummerman]

The only readily screened cables I use are my power leads and honestly, I have no idea if they make any difference but they sure look snazzy

However, I use ferrite coils on all and every input, interconnects and speaker cables and have been doing so for years. They cost hardly anything.

 

[steve_1979]

If you're picking up humming or clicking noises then yes usung screeded cables will will often stop this. Screened cables are particularly effective on low signal level cables such as the ones going to your active speakers.

 

[davedotco]

Firstly, let me say that I have never experienced noise in a hi=fi system that is the result of cables hadling a line level signal. Some of my favourite interconnects are made by XLO and they are unscreened, non coaxial designs, see also some cables by DNM and Nordost. I should further qualify this by saying that the max length of cables that I have tried is 3 metre.

Before changing anything, I would carry out further investigation to ascertain where the noise is coming from, switching cables at the speaker end, at the amp end, disconnecting completely at the amp end, removing all in puts etc, etc. This should give you a better idea of where the noise is coming from.

If you are going down the 'new cables' route then you need to do a bit of research, work out the differences between standard coax and multicore cables with separate screen. Look into cables with two or more cores and a separate screen, my choice would be Van Damme Starquad cable, using 2 cores per signal leg and the screen connected at the source end only. Massive overkill but if you are going to the trouble of custom made cables, this is how I would do it.

 

[gasolin]

So fare after trying to clean up all my cable there is not high frequency noise.

I use same length for each speaker, i do want the sound reaching the speaker at the same time.

When i used speaker cable for passive speakers i used 4 meters,have done that for a long time if 3 or 3.5meter is enough i don't know, 4 meters work for me.

Interconnects sucs as klotz i can get in 3 meter or 5 or 6 meters meter not 3.5,4.0 or 4.5 meter

Must admit i use 6 meters (thought it was only 5 meters) since all they had when i bough my speakers was 6 meter (wasn't at all expensive,less than the price of a cd, properly shielded,screened?).

Not shure if i should use the usb cable with the ferrit core and i think i would go for better shielded,screened cable like those from klotz,just to be extra safe, unless someone would recommend me something else (different brand).

 

[abacus]

There is more interference in studios and live gigs than in any domestic environment, (Hence most of them use balanced) so I would get some from a pro music store (Unbalanced are used in the trenches as well) as the ones they supply are specifically designed for these types of problems. (They are also reasonably priced)

Bill

 

[gasolin]

Asked in another place about balanced preamps and got this answer that the speakers i have where not true balanced (was intereted in premaps with balanced output, couldn't find alot that was used and cheap)

I do have one lamp,2 active speakers (of course), 2 monitors (screens),pc,about 8 cables including power and audio interface, a multifunktion printer,usb harddrive,amp/control unit,cdplayer,turntable so i do have alot that could give high frequency noise

 

[Pedro2]

I've experienced some noise with both passive and active set-ups. I currently use these:

https://www.amazon.co.uk/Meter-Shielded-Balanced-Microphone-Connectors-Black/dp/B00L91ASCE/ref=sr_1_2?s=electronics&ie=UTF8&qid=1517761578&sr=1-2&keywords=gotham+xlr

(Gotham dual shielded XLR microphone cables)

There is still a faint hiss if you put your ear up to the speakers but nothing big enough to affect the overall sound quality when music is playing. Over on the Linn forum, many followers advocate wrapping power and audio interconnects in aluminium foil. Not sure if this effective but it's a cheap option! I just don't have enough spare time (or the inclination) myself to wrestle with spaghetti behind my Hi fi kit!

 

[Pedro2]

Apologies to OP if you cannot use XLR interconnects as the post above will not be much use!

 

[andyjm]

I use same length for each speaker, i do want the sound reaching the speaker at the same time.

!

 

[gasolin]

Rca to rca 1.5 or 2 meters and rca to trs (6.3mm jack) 4-5 meter, don't know if 3.5meter would be enough,i think 3 meter isn't enough

 

[insider9]

These are rather long runs for unbalanced interconnects. Is there no other way to do it? Have you thought to rearrange your setup? The shorter the better and it really makes hardly any difference if you're using different lengths.

 

[DocG]

I use same length for each speaker, i do want the sound reaching the speaker at the same time.

!

Indeed, gasolin.

If say the left wire is 1m longer than the right, then the sound from your left speaker will come about 0.000000003 seconds after the right one’s (speed of light and all that).

That’s the same delay as keeping your head 1 micrometre closer to the right speaker... *smile*

 

[gasolin]

Can't rearrange my system.

Im not worried about the length of the cable, as long as i can keep it not to long.

Since i noticed some high frequency noise im more concerned to have some cable,interconnects that are properly shielded,screened, this way i make shure that the cable i use is a little better (or alot, since the one im thinking of buying from klotz is in a much high grade,quality than what i have) and more likely not to give me high frequency noice.

If it also have better sound than what im using atm, it's just a nice bonus

 

[bigboss]

My understanding that the connection between the cable and the amp / speaker is more likely to cause hum than the cable itself. Have you checked the connections again? If you swap the cables over to the other speaker, is the problem reproduced!

 

[gasolin]

Tried without out cable an there was not high frequency noise

Before my yamaha hs7 i had active genelecs that didn't have the problem, since the yamaha didn't have rca connection i changed to a different brand, cable, also from my audio interface to my nad 3020i since i wanted to keep the synergy,sound form the audio interface to my speakers the same like same speakers,cable in a surround set up.

Atm i don't have it but i would like to prevent it for comming again, make it harder to get it.

 

[andyjm]

Gasolin,

Had a quick look at the HS7 - they seem highly regarded.

They have two balanced inputs, a 3 pin XLR and 1/4" stereo jack - as you would expect for a speaker designed for near field studio use.

How exactly are you connecting the rca output on your pre amp to the balanced input on the speaker?

 

[gasolin]

 

[andyjm]

Thx. I will check, but I would expect that the balanced 1/4" jack input on the speakers is stereo, with the tip and ring being the + and - balanced inputs and the body of the plug being the screen. By using a mono jack your are shorting one of the balanced inputs to ground.

That may not be a bad thing, and is one of the ways of unbalancing an input, but it does depend on the design of the input. I will come back when I find a minute to look at the manual.

 

[davedotco]

Thx. I will check, but I would expect that the balanced 1/4" jack input on the speakers is stereo, with the tip and ring being the + and - balanced inputs and the body of the plug being the screen. By using a mono jack your are shorting one of the balanced inputs to ground.

That may not be a bad thing, and is one of the ways of unbalancing an input, but it does depend on the design of the input. I will come back when I find a minute to look at the manual.

The HS7 has electronically (differential) balanced inputs, shorting the -ve phase to ground is the correct procedure. The cable being used is a very tidy way of achieving this.

Without having checked out the system in person, I would be very surprised if the cable is the primary cause of any noise, far more likely to be a dry joint, either in the connectors or possibly the older Nad amplifier.

 

[gasolin]

nothing wrong with my nad amp,it just works

 

[davedotco]

nothing wrong with my nad amp,it just works

If you are getting RF intererence, it is getting in somewhere. RF should be inaudible, but can become audible in certain cases, one of the most common ways is via a dry joint somewhere in the circuit. Many Nad amplifiers had the phono sockets, both in and out, directly connected to the circuit board without sufficient mechanical support, this was a known weak point on early series 3020s with dem units, where connections were plugged in and removed on a regular basis, failing in the dealers showroom.

This is a possibility, no more, I do not know your specific model.

 

[gasolin]

1.5 meter https://shop.klotz-ais.com/8008-alp.html

5.0 meter (shorter was 3.0 meter) https://shop.klotz-ais.com/8002-alpp.html

It's without any doubt a better cable.

Top and midragne less edgy (still doesn't sound good if the record doesn't have a good sound quality),cleaner sound, wider stereo image, bass sounds tighter and deeper

Less than 100£ for 2 cables is not to bad, it's good quality and sounds good, above standard quality