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Ferrites Noise Filter Cable Clips for audio setups.
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PostPosted: Thu Jun 12, 2008 5:22 pm    Post subject: Ferrites Noise Filter Cable Clips for audio setups. Reply with quote

Just sharing some information with bros here. For EMI interference and to take care of hum and noise in audio power cables and interconnects (RCA), I have been using these TDK branded Noise Filter Cable Clip Ferrites that I initially used when I first installed my I.C.E. in Apr 2006.

Here is a picture of how it looks like.


Recently, I had installed the newer bigger and heavier Ferrites for just the power cables at my ANL fuse holder at the battery. The smaller one is for 14awg speaker cables. Both bro Spinworkx and me had installed these ferrites and it does help to produce cleaner sound with reduction of EMI interference. I had also installed these ferrites to the power cable and my interconnects for my home stereo setup. Anyway, it is just a very small investment.


Price wise the bigger ones that can accommodate up to 4awg cables (not 0 gauge) costing $4.50 ea while the smaller one for 14awg speaker cables cost about $2.50 to $3.00 each all obtainable from Continental Electronic Enterprise Unit #B1-25 Sim Lim Tower, 10 Jln Besar, Singapore 208787. Telephone : 6293 4674 near corner staircase.
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PostPosted: Thu Jun 12, 2008 6:04 pm    Post subject: Reply with quote

ah... something new for me... google it and here's some info:

What is EMI and RFI?
EMI and RFI are similar and often have the same causes and solutions. RFI is interference or noise that is radiated - essentially, radio waves. EMI includes RFI but also includes non-radiated interference, such as line noise coming in from power or control lines. From here on we will use only EMI, as treatments are basically the same.

EMI can come from many sources. Almost everything in your home or car emits some EMI, including fluorescent lights, TV's, cordless phones, electric tools, auto ignition, etc. In solar and DC systems you often have additional sources, such as switching power supplies, charge controllers, DC light ballasts, and inverters (especially modified sine wave types).

Suppression

This is relatively new and often the most effective. The most common method uses Ferrite chokes, cores, and beads. Ferrites are powdered molded metal powders cast into various shapes and sizes. Ferrites are actually ceramics with . They are usually made of powdered Iron Oxide (Fe2O3), along with Zinc, Copper, Zinc, and other metal oxides.

Radio and TV interference from solar equipment and many DC operated items, especially fluorescent lights and solar charge controls is a growing problem. RFI/EMI noise radiated from DC and solar equipment can cause noise problems in AM radios, cell phones, cordless phones, TV and sometimes in other electronic equipment.

Multiple units of same or different types may be used in severe cases.

Ferrite suppressor cores are simple to use, and are comparatively economical in both price and space. Ferrite suppressors have been successfully employed for attenuating EMI in computers and related products, switching power supplies, electronic automotive ignition systems, and garage doors openers, to name just a few.

When clamped on a cable, these 31 & 44 material cores attenuate conducted EMI from 5-1000 MHz.


source: http://store.solar-electric.com/nosufefi.html
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PostPosted: Thu Jun 12, 2008 6:19 pm    Post subject: Reply with quote

jackiec wrote:
ah... something new for me... google it and here's some info:
source: http://store.solar-electric.com/nosufefi.html


Thanks for sharing such useful information. Appreciate it very much.
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PostPosted: Fri Jun 13, 2008 12:18 am    Post subject: Reply with quote

Be careful with these gadgets. In home audio we run away from these things. Yes they do suppress EMI, they also suppress the sound
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PostPosted: Fri Jun 13, 2008 12:31 am    Post subject: Reply with quote

boring wrote:
Be careful with these gadgets. In home audio we run away from these things. Yes they do suppress EMI, they also suppress the sound


But if used on power cables should be ok right?
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PostPosted: Fri Jun 13, 2008 6:39 am    Post subject: Reply with quote

dunnounme wrote:
boring wrote:
Be careful with these gadgets. In home audio we run away from these things. Yes they do suppress EMI, they also suppress the sound


But if used on power cables should be ok right?


can you hear the effect of of EMI & RFI on your system?

will you hear a "better" difference after "ferrite"-ing?

i am not sure but i think boring is right. i know a sifu in
home hifi that uses hundreds if not thousands of those
gizmo. to him, EQ. but the sound is dry and dead to me.
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PostPosted: Fri Jun 13, 2008 7:42 am    Post subject: Reply with quote

perhaps uncle bob and spinworkz bro can do some testint Wink
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PostPosted: Fri Jun 13, 2008 9:08 am    Post subject: Reply with quote

I don't know how good these gadgets are.
I'm assuming only(correct me if I'm wrong)
When the current travel fast(high load) on the power wire, it will generate interference(noise), but when current travel slow(low load) the interference(noise) will be lesser.
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PostPosted: Fri Jun 13, 2008 11:44 am    Post subject: Reply with quote

hmmmm, i am not sure either... but what would be the right speed
for current?
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PostPosted: Fri Jun 13, 2008 1:23 pm    Post subject: Reply with quote

kyheng wrote:
I don't know how good these gadgets are.
I'm assuming only(correct me if I'm wrong)
When the current travel fast(high load) on the power wire, it will generate interference(noise), but when current travel slow(low load) the interference(noise) will be lesser.


current travels at same speed. as fast as the speed of electron travels. be it high or low current, clean/dirty current, noise or music, static/interference noise.
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PostPosted: Fri Jun 13, 2008 1:32 pm    Post subject: Reply with quote

I starting to get the point...
But what makes the difference between 50amp and 100amp accross the wire? This question has been bothering me for a long time already...
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PostPosted: Fri Jun 13, 2008 2:37 pm    Post subject: Reply with quote

do you mean cable rating? if measured at 50A and 100A,
it could be different voltage.
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PostPosted: Fri Jun 13, 2008 3:08 pm    Post subject: Reply with quote

I should make the question clearer....
Given a fixed wire and voltage, which is 1/0AWG, what's the difference when the current draw of 50amp and 100amp?
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PostPosted: Fri Jun 13, 2008 5:19 pm    Post subject: Reply with quote

i am not 100% sure; but from the link nothing will happen to the
cable because it has been way over sized.

http://www.the12volt.com/wiring/recwirsz.asp

any sifu can confirm?
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PostPosted: Sun Jul 20, 2008 4:40 pm    Post subject: Reply with quote

pic of someone who looks like a big believer in ferrets...





http://minkara.carview.co.jp/userid/319370/car/216010/999662/parts.aspx
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PostPosted: Sun Jul 20, 2008 5:17 pm    Post subject: Reply with quote

Shocked Shocked Shocked
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PostPosted: Sun Jul 20, 2008 6:36 pm    Post subject: Reply with quote

hi!

actually i oso wanted to put the ferrite ring in between the power cable that connect the fuse but just worried that the engine bay is too hot that the ring cover which is made of plastic will melt. i left it there for awhile but when tk it out, it is really hot leh. will it melt?
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PostPosted: Sun Jul 20, 2008 6:56 pm    Post subject: Reply with quote

Don't think it will melt.

To me, putting it on the power cable should be ok, since power cable don't carry sound signals. I'll not put it on RCA cables.
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PostPosted: Sun Jul 20, 2008 8:45 pm    Post subject: Reply with quote

wa-lao-eh!
that's some ferrite-ing! Cool
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PostPosted: Sun Jul 20, 2008 9:27 pm    Post subject: Reply with quote

maxngck wrote:
hi!

actually i oso wanted to put the ferrite ring in between the power cable that connect the fuse but just worried that the engine bay is too hot that the ring cover which is made of plastic will melt. i left it there for awhile but when tk it out, it is really hot leh. will it melt?


There are 2-3 kinds of ferrites sold in SLT. The smaller ones like the TDK are plastic but the bigger heavier black round ones are not. Check out the picture in earlier posting in this same thread: http://www.phpbbserver.com/sgcaraudio/viewtopic.php?p=5307&mforum=sgcaraudio#5307
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PostPosted: Sun Jul 20, 2008 10:28 pm    Post subject: Reply with quote

dunnounme wrote:
Don't think it will melt.

To me, putting it on the power cable should be ok, since power cable don't carry sound signals. I'll not put it on RCA cables.


Maybe there's should be a thread about this? What's the difference between putting it on the power vs RCA..
I personally have it on both...
I tried the RCA with and without and i find that with sounds cleaner....
Anyone else disagrees with putting it on the RCA and advice against it?
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PostPosted: Sun Jul 20, 2008 10:47 pm    Post subject: Reply with quote

spinworkx wrote:

Maybe there's should be a thread about this? What's the difference between putting it on the power vs RCA..
I personally have it on both...
I tried the RCA with and without and i find that with sounds cleaner....
Anyone else disagrees with putting it on the RCA and advice against it?


As for me, I had one ferrite on each and every RCA from behind the HU as well as one ferrite each on the same RCA at the other end just before the amp since I installed my ICE since Apr 2006. Also recently added, one ferrite from the battery before ANL fuse and one more immediately after that same power cable immediately after the ANL fuse.

Anyone disagrees?.. Bro Boring had posted this in this same thread: In home audio we run away from these things. Yes they do suppress EMI, they also suppress the sound.
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PostPosted: Sun Jul 20, 2008 11:38 pm    Post subject: Reply with quote

slidingturtle wrote:
pic of someone who looks like a big believer in ferrets...



holy ferrites batman! Laughing Laughing
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PostPosted: Mon Jul 21, 2008 11:19 am    Post subject: Reply with quote

So the question here is...to use it on RCA or not?
On power cables, we all know it's ok and good..but for RCA, some say it helps, some say it cancels out sound as well...

So does it really do that? Is EMI the same as sound signals? Anyone care to elaborate on this?

I've personally tried again with and without and not much difference, but i do fine with a little cleaner...maybe it's psychological...by the time i get out of the car to remove/put back the ferrites to the RCA i might have already forgotten the other sound Smile

Anyways, i found this article about ferrites, http://www.audiosystemsgroup.com/SAC0305Ferrites.pdf
Who is very free can give it a read and maybe explain to me what it says hehe...i read but it's alien to me man..

Also, i've searched online and again, some cable manufacturers and DIY guys actually say Ferrites help on RCA while others stay away from it...again, similar to this forum....there's no real answer if it is good or bad for RCA..
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PostPosted: Tue Jul 22, 2008 12:35 am    Post subject: Reply with quote

built wrote:
wa-lao-eh!
that's some ferrite-ing! Cool


wankie wrote:


holy ferrites batman! Laughing Laughing


my exact feelings when i saw the pics... well, every man has his poison... Cool Cool Cool Cool Cool Cool
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