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  1. #1

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    Default : Coaxial Digital Connection Vs Digital Fiber Optical Connection?

    Which has the better sound quality,which one should I throw away.thanks
    PolkAudioClyde

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    I found Coaxial to sound best YMMV

    Highly recommend the Kimber Kable D-60
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  3. #3
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    Quote Originally Posted by PolkClyde View Post
    Which has the better sound quality,which one should I throw away.thanks
    I doubt you could tell the difference. Try each one. I like TOSLink due to zero potential of ground differential. Some will say the signal will have to go through emitter up/down conversion. I have never heard an instance where it is an audible problem.

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    Toslink has an extra conversion and you have to decide on glass or plastic for the optics. Glass is prefered but it can cost more.

    If you go coax be sure it's a true 75 ohm cable.

    I use both and prefer a nice 75 ohm coax. I currently use Signal Cable.

    H9
    "Appreciation of audio is a completely subjective human experience. Measurements can provide a measure of insight, but are no substitute for human judgment. Why are we looking to reduce a subjective experience to objective criteria anyway? The subtleties of music and audio reproduction are for those who appreciate it. Differentiation by numbers is for those who do not".--Nelson Pass

    Pass Aleph 30; Eastern Electric Mini Max; Adcom GDA600; MIT S3/Z Pc; SDA 1C; Squeezebox; Tubes add soul!

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    Ditto on Signal.
    Good music, a good source, and good power can make SDA's sing. Tubes make them dance.

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    It depends on the quality of your interfaces. With good interfaces and a good digital cable, I have found Toslink to be the most neutral; coaxial sweetens the deal a little bit if you don't care for a sterile presentation. If you go toslink, buy a quartz glass cable--not plastic fiber.

    Toslink is real good for connecting to a cable box or sat box as they tend to be noisy--and can introduce hum.
    Last edited by steveinaz; 02-25-2011 at 09:41 AM.

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    I prefer digital coax unless I specifically need the electrical isolation provided by Toslink and mentioned about. The best performance for the dollar coax I've found is DH Labs D-75. It's a great design using Teflon and silver over copper conductors, and is true 75 ohm from cable to connectors.

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    The DH Labs D-75, Belden 1694A, and Signal Cable coax are all real good budget digital cables, IMO.

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  9. #9

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    The digital cable will pass slightly higher resolution audio than the optical, if you're listening to multichannel/HD.
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  10. #10

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    Quote Originally Posted by TNRabbit View Post
    The digital cable will pass slightly higher resolution audio than the optical, if you're listening to multichannel/HD.
    HD audio only passes over HDMI or analog. Optical and coax will both pass the same resolution/formats.

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    Quote Originally Posted by WilliamM2 View Post
    HD audio only passes over HDMI or analog. Optical and coax will both pass the same resolution/formats.
    can you clarify "hd audio"? coax and optical do 5.1...are you referring to 7.1?
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    I also prefer the the coax over toslink. In fact, I did not even install a toslink jack in the DAC I am building. As others have stated, true 75 ohm cable is important, but a true 75 ohm jack is just as important. I prefer using the Eichmann PhonoPod RCA Socket. Excellent construction, and true 75 ohm.

    Greg

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    Quote Originally Posted by samnor View Post
    can you clarify "hd audio"? coax and optical do 5.1...are you referring to 7.1?
    DTS and Dolby digital are the 5.1 lossy formats being referred to.

    As an example:

    DTS Digital Surround, also known as the "Core", is the high-quality standard for providing 5.1 channels of discrete digital audio in consumer products. With the ability to operate at 44.1 or 48kHz, and at a bit rate of upto 1.5Mbps

    One goal of the DTS-HD Master Audio format was to allow a bit-to-bit representation of the original movie's studio master soundtrack. To accomplish this, DTS-HD MA supports variable bit rates up to 24.5 Mbit/s on a Blu-ray Disc and up to 18.0 Mbit/s for HD DVD. The format supports a maximum of 192 kHz sampling frequency and 24-bit depth samples in 2 channels stereo mode, and 96 kHz/24bit resolution in multichannel mode with up to 8 channels.


    S/PDIF and TOSLink don't have the bandwidth for the HD audio formats.

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    I go with coax only because it generally cost less than an optical cable. Though I have used both I cannot hear any real difference. Guess my ears might not be as good as others.
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    Quote Originally Posted by TNRabbit View Post
    The digital cable will pass slightly higher resolution audio than the optical, if you're listening to multichannel/HD.
    I'd like you to elaborate on this one.... I think you're mistaken.

    They pass identical signals.
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  16. #16

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    I use COAX and never heard any noise caused by the electrical connection.
    Please. Please contact me a ben62670 @ yahoo.com. Make sure to include who you are, and you are from Polk so I don't delete your email. Also I am now physically unable to work on any projects. If you need help let these guys know. There are many people who will help if you let them know where you are.
    Thanks
    Ben

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    I personally use Blue Jeans Belden 1694A for my Cable box and BR player. I also don't hear any interference from usisng these cables.
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