beerandmusic Posted March 29, 2016 Share Posted March 29, 2016 So i am looking through my cables that i have acquired over the years, and came across a pair of what appear to be standard RCA cables with red and white color on collar of connector. i don't know what the specs normally are on rca cables but i think they used digital coax cable for rca cables? the cable says cablestation hi - definition 24awg 75ohm coax cable (has some other mumbo jumbo also ul usa cl2 uv resistant).... my main question is about the 75 ohm coax. i thought 75ohm coax is what is used for digital coax cables (like for digital inputs). do they use the same cable (or can they use the same) for rca analog? Are these fine to use for regular rca analog audio cables? Link to comment
Panelhead Posted March 29, 2016 Share Posted March 29, 2016 Man you are inquisitive. The coax RG-59 or RG-6 cable can work fine as an analog cable. The conductor is solid core copper. No silver plate. Usually foamed insulator. The return or ground is tinned copper braid and foil. Hook it up and give it a listen. Should be fine. 2012 Mac Mini, i5 - 2.5 GHz, 16 GB RAM. SSD, PM/PV software, Focusrite Clarett 4Pre 4 channel interface. Daysequerra M4.0X Broadcast monitor., My_Ref Evolution rev a , Klipsch La Scala II, Blue Sky Sub 12 Clarett used as ADC for vinyl rips. Corning Optical Thunderbolt cable used to connect computer to 4Pre. Dac fed by iFi iPower and Noise Trapper isolation transformer. Link to comment
semente Posted March 29, 2016 Share Posted March 29, 2016 For better theoretical performance coaxial ICs should have 0.4mm or less (solid) core conductor and the thickest possible foam for lower capacitance and lower dielectric absorption. R "Science draws the wave, poetry fills it with water" Teixeira de Pascoaes HQPlayer Desktop / Mac mini → Intona 7054 → RME ADI-2 DAC FS (DSD256) Link to comment
Speedskater Posted March 29, 2016 Share Posted March 29, 2016 Most reasonable coax RCA unbalanced analog audio interconnects have a 75 Ohm Radio Frequency Characteristic Impedance. Whether it's marked on the cable or not. Why? Because it's often easier and more economical to manufacture cables that end up with a 75 Ohm impedance. Link to comment
beerandmusic Posted March 29, 2016 Author Share Posted March 29, 2016 so would these be as good or better than standard rca cables (say monster). should i junk them (goodwill) like I did with about 20 other radioshack type red/white cables or are they slightly better? Link to comment
sandyk Posted March 29, 2016 Share Posted March 29, 2016 Most reasonable coax RCA unbalanced analog audio interconnects have a 75 Ohm Radio Frequency Characteristic Impedance. Whether it's marked on the cable or not.Why? Because it's often easier and more economical to manufacture cables that end up with a 75 Ohm impedance. Not necessarily 75 ohms Many cables such as at the attached link which are used in commercial interconnects are not 75 ohms. Single Core OFC Screened Audio Cable | AV | Coaxial Cable | Wire, Cable & Accessories | PRODUCTS | WB1508 | Jaycar Electronics How a Digital Audio file sounds, or a Digital Video file looks, is governed to a large extent by the Power Supply area. All that Identical Checksums gives is the possibility of REGENERATING the file to close to that of the original file. PROFILE UPDATED 13-11-2020 Link to comment
Speedskater Posted March 29, 2016 Share Posted March 29, 2016 Of course, not necessarily. But, many, many do. 65 Ohms, that's strange. also a strange way to do a spec sheet. And in any case 65 Ohms is close enough to 75 Ohms for a 5 meter (maybe 10 meter) digital cord. Link to comment
sandyk Posted March 29, 2016 Share Posted March 29, 2016 And in any case 65 Ohms is close enough to 75 Ohms for a 5 meter (maybe 10 meter) digital cord. Only if you believe it doesn't matter ! Some people believe that typical RCA plugs are fine on 75 ohm digital leads too. (I use this cable for my own DIY interconnect cables, but not for digital cables.) How a Digital Audio file sounds, or a Digital Video file looks, is governed to a large extent by the Power Supply area. All that Identical Checksums gives is the possibility of REGENERATING the file to close to that of the original file. PROFILE UPDATED 13-11-2020 Link to comment
Speedskater Posted March 29, 2016 Share Posted March 29, 2016 You got it backwards. You have to believe for there to be a difference. The digital circuit won't know the difference. Link to comment
sandyk Posted March 30, 2016 Share Posted March 30, 2016 You got it backwards. You have to believe for there to be a difference.The digital circuit won't know the difference. Many people report improvements when using RCA plugs that more closely meet a 75 ohms impedance, and even more prefer to use digital leads with genuine 75 ohm impedance BNC connectors at both ends . Unfortunately, it's not always feasible to replace an RCA socket in commercial gear with a genuine 75 ohms BNC socket. How a Digital Audio file sounds, or a Digital Video file looks, is governed to a large extent by the Power Supply area. All that Identical Checksums gives is the possibility of REGENERATING the file to close to that of the original file. PROFILE UPDATED 13-11-2020 Link to comment
Recommended Posts
Create an account or sign in to comment
You need to be a member in order to leave a comment
Create an account
Sign up for a new account in our community. It's easy!
Register a new accountSign in
Already have an account? Sign in here.
Sign In Now