Author Topic: how do i make an audio coax cable? (Read 2630 times)

mercury724 · « **on:** Jan 04, 2008 at 12:46 AM »

anu po ang kailangan material? belden coax cable na rg58 or rg59? kailangan ba meron aluminum foil shielding with the braided wires? or kahit wala na aluminum foil just the braided copper shielding lang pwede na?

pekspert · « **Reply #1 on:** Jan 04, 2008 at 07:49 AM »

any 75ohm wire will do with or without shielding but i prefer Rg6 with aluminum shielding

mercury724 · « **Reply #2 on:** Jan 04, 2008 at 11:44 AM »

Quote from: pekspert on Jan 04, 2008 at 07:49 AM

any 75ohm wire will do with or without shielding but i prefer Rg6 with aluminum shielding

sir pekspert, hindi po ba makapal masyado ang RG6 wire?

pekspert · « **Reply #3 on:** Jan 04, 2008 at 11:53 AM »

not for me

meltrob1 · « **Reply #4 on:** Jan 04, 2008 at 12:03 PM »

Buy from Listening Style from Mega, they will make it for you just specify the length and you can make choices for the interconnect plug.

mercury724 · « **Reply #5 on:** Jan 04, 2008 at 12:35 PM »

Quote from: meltrob1 on Jan 04, 2008 at 12:03 PM

Buy from Listening Style from Mega, they will make it for you just specify the length and you can make choices for the interconnect plug.

sir mga mag kano kaya price pag around 10meters.

TomE · « **Reply #6 on:** Jan 04, 2008 at 07:14 PM »

Quote from: pekspert on Jan 04, 2008 at 07:49 AM

any 75ohm wire will do with or without shielding but i prefer Rg6 with aluminum shielding

Very helpful post!

I followed this to the letter and had one "assembled" in the Workshop department of SM.

3 meters cost me all of PhP130, including the metal RCA ends.

Thanks!

kpy555 · « **Reply #7 on:** Jan 08, 2008 at 03:18 PM »

Mercury,

You can't use RG-58 since it's impedance is 50 ohms. RG-59, RG-6 or RG-179 will do (all have 75 ohms), even 2-conductor line level audio cables (such as Belden 8760) will do. I can supply you with Belden cables.

pekspert, what brand did you get from SM Workshop?

mercury724 · « **Reply #8 on:** Jan 10, 2008 at 01:58 PM »

Quote from: kpy555 on Jan 08, 2008 at 03:18 PM

Mercury,

You can't use RG-58 since it's impedance is 50 ohms. RG-59, RG-6 or RG-179 will do (all have 75 ohms), even 2-conductor line level audio cables (such as Belden 8760) will do. I can supply you with Belden cables.

pekspert, what brand did you get from SM Workshop?

bakit sir anu po mangyayari if you use a 50ohms na cable? i wil be using the coax for the audio not video.

RXV · « **Reply #9 on:** Jan 10, 2008 at 04:41 PM »

75ohms ang gamit dapat, hindi pwede 50ohms

kpy555 · « **Reply #10 on:** Jan 10, 2008 at 04:52 PM »

Hi Mercury:

I was referring to the AES/EBU digital audio cable standards. The typical cables used in this standard are 110 ohms multi-conductor or 75 ohms coaxial cables. These are specified since the bit transfer rate is important. Using a cable with unmatched impedance may cause signal feedback, causing delay in transmission.

By the way, as for the shielding, braid shield alone is good enough for audio since it is already effective in minimizing low frequency interference. But having an aluminum foil shield together with the braid, especially when laying the cable together with power cables or other signal cables, is an advantage. Aluminum foil shields cover the central conductor 100%. Braid shield alone can cover up to 97% shielding at most, 98% when double braided.

TomE · « **Reply #11 on:** Jan 10, 2008 at 08:05 PM »

Quote from: kpy555 on Jan 08, 2008 at 03:18 PM

pekspert, what brand did you get from SM Workshop?

Maybe I can answer this.

I'm not really sure what brand I purchased but I had two options.

One cost around P25/meter, the other cost P15/meter.

I got the cheaper one coz I just wanted to try it out.

So far, so good naman!

kpy555 · « **Reply #12 on:** Jan 11, 2008 at 10:36 AM »

TomE:

Cool! Hehe!

sidewinder · « **Reply #13 on:** Aug 03, 2008 at 04:40 PM »

ace also sells coaxial cable 75 ohms with rca plugs puede ba yun? thanks

simonzaide · « **Reply #14 on:** Aug 03, 2008 at 10:55 PM »

how about a digital coaxial cable ? what do you recommend

skylark · « **Reply #15 on:** Feb 07, 2009 at 01:15 PM »

Quote from: simonzaide on Aug 03, 2008 at 10:55 PM

how about a digital coaxial cable ? what do you recommend

simonzaide · « **Reply #16 on:** Feb 07, 2009 at 10:12 PM »

i got myself a digital coaxial from using a quantum cable and some monster rca plugs

markcrenz · « **Reply #17 on:** Feb 07, 2009 at 11:16 PM »

a good quality rca cable will do. i tried it against the P1,200 monster cable coax and heard no difference. you can buy 10 meters foil braided mono shielded wires and a pair of gold-plated rca plugs then have it assembled at any electronics store or repair shop.

ment · « **Reply #18 on:** Feb 24, 2009 at 06:21 PM »

wow thanks .... all this time i thought optical cable is the preferred choice...... apparently coax cable pala preferred choice dito

markcrenz · « **Reply #19 on:** Feb 25, 2009 at 09:37 AM »

Quote from: ment on Feb 24, 2009 at 06:21 PM

wow thanks .... all this time i thought optical cable is the preferred choice...... apparently coax cable pala preferred choice dito

Optical cable IS the preferred choice for digital audio. It just so happened that this discussion is about coax.

odyopayl · « **Reply #20 on:** Feb 25, 2009 at 07:35 PM »

Quote from: markcrenz on Feb 25, 2009 at 09:37 AM

Optical cable IS the preferred choice for digital audio. It just so happened that this discussion is about coax.

+1

John E. · « **Reply #21 on:** Feb 27, 2009 at 06:50 AM »

Janusten · « **Reply #22 on:** Mar 08, 2009 at 07:06 AM »

Quote from: ment on Feb 24, 2009 at 06:21 PM

wow thanks .... all this time i thought optical cable is the preferred choice...... apparently coax cable pala preferred choice dito

share the same surprise(((
thought optical is better?

praktikal · « **Reply #23 on:** Mar 26, 2009 at 04:16 PM »

amigos, gaano ba kalaki ang difference ng solid sa stranded? may nagsabi sa akin na manipis daw tumunog ang solid?

salamatz