DIY digital audio coaxial cable

Hayden · 28th November 2011, 01:09 PM

There are many topics regarding these types of cables on this forum but no topic comes close enough to answer all my questions

I have 2 Denon dnx3700 cd turntables and a dnx1700 mixer for my studio and I want to link them via the coaxial connection because some people say its better than the old left and right analogue rca???? Since the cd players are digital and the mixer is digital too is it correct you should have digital cables to minimise the amount of digital to analogue converting all the time?

Can I use a standard top quality rca connector?
I have heard it has to be a certain impedance connector?
I have access to some 75ohm quad shielded Belden coax cable wb2006 would that work good enough?

The length of the cable will be 15inches on one cd player and 20inches on the other, will that matter over that length? timing issues?

thanks people

Turbon · 28th November 2011, 01:17 PM

You would need to feed very high frequencies to achieve any timing effects. So feel free to pick your lenghts.

Brgds

Hayden · 28th November 2011, 01:26 PM

thanks man, I know alot about sound quality and producing music from my studio and working with recording artists but I don't realy know alot about the technicial side of things.

O yeh I forgot would silver solder be best or would standerd 60/40 work fine?

Turbon · 01:53 PM

I believe silver is what to wan't in the end.
There might be ideas in this thread that i'm sure of wouln't worsen your efforts.

merlin el mago · 28th November 2011, 03:41 PM

Use 75 Ohms coaxial antenna cable & if devices accept use true 75 ohms BNC connectors.

gmarsh · 28th November 2011, 03:54 PM

Honestly, buy a couple of good quality, premade 75 ohm video cables.

Turbon · 28th November 2011, 03:57 PM

Those will probably work just fine gmarch in an digital setup but where is the learning experience or great fun in that?

Speedskater · 28th November 2011, 06:36 PM

At 15 or 20 inches, any cable you can find will work great.
Now at 40 feet, it's a different ballgame.

ihear21khz · 28th November 2011, 10:43 PM

If you have to use an RCA connector, there is a Canare RCA that is as close to 75ohm as you will get. It needs to be solidly crimped. I would use a 75ohm coax such as Beldon Video Brilliance. You can purchase ready made cables with the above from a US based online vendor called Blue Jeans cable.

Hayden · 29th November 2011, 06:00 AM

That's part of the reason I am making them is because the ready made cables are way to long lol

28th November 2011, 01:09 PM	#1
Hayden diyAudio Member Join Date: Aug 2004 Location: Mackay Australia	DIY digital audio coaxial cable There are many topics regarding these types of cables on this forum but no topic comes close enough to answer all my questions I have 2 Denon dnx3700 cd turntables and a dnx1700 mixer for my studio and I want to link them via the coaxial connection because some people say its better than the old left and right analogue rca???? Since the cd players are digital and the mixer is digital too is it correct you should have digital cables to minimise the amount of digital to analogue converting all the time? Can I use a standard top quality rca connector? I have heard it has to be a certain impedance connector? I have access to some 75ohm quad shielded Belden coax cable wb2006 would that work good enough? The length of the cable will be 15inches on one cd player and 20inches on the other, will that matter over that length? timing issues? thanks people

28th November 2011, 01:39 PM	#4
Turbon diyAudio Member Join Date: Aug 2011 Location: South	I believe silver is what to wan't in the end. There might be ideas in this thread that i'm sure of wouln't worsen your efforts. Last edited by Turbon; 28th November 2011 at 01:53 PM.

28th November 2011, 06:36 PM	#8
Speedskater diyAudio Member Join Date: Sep 2002 Location: Lakewood, Ohio	At 15 or 20 inches, any cable you can find will work great. Now at 40 feet, it's a different ballgame. __________________ Kevin

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28th November 2011, 01:17 PM	#2
Turbon diyAudio Member Join Date: Aug 2011 Location: South	You would need to feed very high frequencies to achieve any timing effects. So feel free to pick your lenghts. Brgds

28th November 2011, 01:26 PM	#3
Hayden diyAudio Member Join Date: Aug 2004 Location: Mackay Australia	thanks man, I know alot about sound quality and producing music from my studio and working with recording artists but I don't realy know alot about the technicial side of things. O yeh I forgot would silver solder be best or would standerd 60/40 work fine?

28th November 2011, 03:41 PM	#5
merlin el mago diyAudio Member Join Date: Sep 2009 Location: Blanes - Costa Brava	Use 75 Ohms coaxial antenna cable & if devices accept use true 75 ohms BNC connectors.

28th November 2011, 03:54 PM	#6
gmarsh diyAudio Member Join Date: Apr 2004 Location: Halifax, NS, Canada	Honestly, buy a couple of good quality, premade 75 ohm video cables.

28th November 2011, 03:57 PM	#7
Turbon diyAudio Member Join Date: Aug 2011 Location: South	Those will probably work just fine gmarch in an digital setup but where is the learning experience or great fun in that?

28th November 2011, 10:43 PM	#9
ihear21khz diyAudio Member Join Date: Feb 2009	If you have to use an RCA connector, there is a Canare RCA that is as close to 75ohm as you will get. It needs to be solidly crimped. I would use a 75ohm coax such as Beldon Video Brilliance. You can purchase ready made cables with the above from a US based online vendor called Blue Jeans cable.

29th November 2011, 06:00 AM	#10
Hayden diyAudio Member Join Date: Aug 2004 Location: Mackay Australia	That's part of the reason I am making them is because the ready made cables are way to long lol

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