Who said anything about 75 ohms?
I once put a $2000 Gore-Tex cable (with Type N connectors) on my my SPDIF setup. Fantastic bass. Top-end was smeared.
I also had the same cable with SMAs. Same effect. Think I gave them to a guy were I used to work, as that is where they came from, and he claimed to need them.
Yeah, that is what I should have been making all these years. $5000 SPDIF cables. Bet I could not have ordered them from Gore-Tex fast enough.
Jocko
I once put a $2000 Gore-Tex cable (with Type N connectors) on my my SPDIF setup. Fantastic bass. Top-end was smeared.
I also had the same cable with SMAs. Same effect. Think I gave them to a guy were I used to work, as that is where they came from, and he claimed to need them.
Yeah, that is what I should have been making all these years. $5000 SPDIF cables. Bet I could not have ordered them from Gore-Tex fast enough.
Jocko
Jocko...2000 dollar cable<???...ummm...I know things are bigger in texas but your head cant be screwed on right for paying that much...hahahahaha
Yes.
It was for a $150K microwave network analyzer, and came with more data than you can imagine so that its error contribution could be factored in. It really was worth $2k, unlike the snake oil cables audiophiles buy.
So, therefore, at $5k for audiophiles, it would have been a bargain.
Jocko
It was for a $150K microwave network analyzer, and came with more data than you can imagine so that its error contribution could be factored in. It really was worth $2k, unlike the snake oil cables audiophiles buy.
So, therefore, at $5k for audiophiles, it would have been a bargain.
Jocko
Hi all,
Couldn't we start changing the SPDIF interface to few volts into 50 ohm, using BNC ?
Just a dream 🙂
Couldn't we start changing the SPDIF interface to few volts into 50 ohm, using BNC ?
Just a dream 🙂
I have no problem with 50 ohms....
It is closer to the 30-35 ohms that RCAs are.
But why a couple volts? More EMI problems.
Jocko
It is closer to the 30-35 ohms that RCAs are.
But why a couple volts? More EMI problems.
Jocko
Supplier
I think I got it from Electrosonic. It is an Amphenol Part 31-10-75. Go to the amphenol web site for details.
You can also get it from Newark, Part no 90F8488, price 10,10U$
Bye...
I think I got it from Electrosonic. It is an Amphenol Part 31-10-75. Go to the amphenol web site for details.
You can also get it from Newark, Part no 90F8488, price 10,10U$
Bye...
Algar,
it would be more informative if you posted a picture of the 50 ohms for comparison. I can see no difference between what you have posted and the 50 ohms I have.
it would be more informative if you posted a picture of the 50 ohms for comparison. I can see no difference between what you have posted and the 50 ohms I have.
The 50 ohm ones have about 2 mm or so of Teflon around the part of the center pin that protrudes upward.
Jocko
Jocko
75 Ohm BNCs, in my experience, are more fragile because
there isn't that dielectric surrounding them. It's much
easier to bend the center pin of the female since there's
nothing to reinforce it.
there isn't that dielectric surrounding them. It's much
easier to bend the center pin of the female since there's
nothing to reinforce it.
You Mean $5000 (ok $2000) For Smeared Top-End ?.
How come the 'top-end was smeared' ?.
Eric.
Jocko Homo said:
How come the 'top-end was smeared' ?.
Eric.
Smeared top end.......
Or maybe it was way too bright.......(senior citizen moment)...anyway, it didn't sound right.
But why? I dunno. It was 50 ohms...........
I don't let anyone near my 75 ohm female BNCs.
Jocko
Or maybe it was way too bright.......(senior citizen moment)...anyway, it didn't sound right.
But why? I dunno. It was 50 ohms...........
I don't let anyone near my 75 ohm female BNCs.
Jocko
To protect the 75ohms connector
I'm doing that with fragile connectors, like connectors impossible to replace by new one on old test equipments (I have a lot...), You connect a good know cable on it and you let it connected. This way the center pin is always protected.
I'm doing that with fragile connectors, like connectors impossible to replace by new one on old test equipments (I have a lot...), You connect a good know cable on it and you let it connected. This way the center pin is always protected.
JOCKO..GOD DAMMIT...
Hi,
Eric,
Wake up...the man's feeding you all the data, punch the number(s) in please.
Cheers,😉
Hi,
Eric,
Wake up...the man's feeding you all the data, punch the number(s) in please.
Cheers,😉
Give the guy a break, man.......
For a 50 ohm cable, it sounded much better than you would think. And the bass was really good.
But I have no explanation as to why exactly it sounded that way. Generic 50 ohm cables are all rotten. Usually the bass and top-end are messed up when you have mismatches.
Jocko
For a 50 ohm cable, it sounded much better than you would think. And the bass was really good.
But I have no explanation as to why exactly it sounded that way. Generic 50 ohm cables are all rotten. Usually the bass and top-end are messed up when you have mismatches.
Jocko
Yeah !, Give Me A Break, Man.......
My question was about why Jocko's 50 ohm borrowed cable sounded good in the bass, but messy in the highs - now I understand that there was gross impedence mismatch, but still Jocko himself questions why the bass sounded good.
Jocko, is there a difference to using a 75 ohm or 50 ohm optimised system ?.
Eric.
Doh, did I miss that the discussion is about 75 ohm systems or something ?.fdegrove said:
My question was about why Jocko's 50 ohm borrowed cable sounded good in the bass, but messy in the highs - now I understand that there was gross impedence mismatch, but still Jocko himself questions why the bass sounded good.
Jocko, is there a difference to using a 75 ohm or 50 ohm optimised system ?.
Eric.
OK.YOU HAVE GOT A BREAK.
Hi,
Eric,
Just pulling your leg....
So,wassup Jocko?
Or was I reading too much into it?
Cheers,😉
Hi,
Eric,
Just pulling your leg....
So,wassup Jocko?
Or was I reading too much into it?
Cheers,😉
50 vs. 75 ohm
Since I was developing a product for retail sale, it had to be 75 ohms. However........I bet if I made one just for me, and I made it 50 ohms on both ends, that Gore-Tex cable would be killer.
Matching interconnects for sonic properties is common pratice for audiophiles, although I think that is silly. Oh wait.....I said "audiophile". That explains it all.
Problem is, the some morons think that the same practice holds true for SPDIF. Anything that changes HF response is causing jitter.
Jocko
Since I was developing a product for retail sale, it had to be 75 ohms. However........I bet if I made one just for me, and I made it 50 ohms on both ends, that Gore-Tex cable would be killer.
Matching interconnects for sonic properties is common pratice for audiophiles, although I think that is silly. Oh wait.....I said "audiophile". That explains it all.
Problem is, the some morons think that the same practice holds true for SPDIF. Anything that changes HF response is causing jitter.
Jocko
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