I bet SMCs ( pin reversed SMAs ) sound better.....
No-no... jokes aside...
I agree completely to SMAs or BNCs, you can have gold plated BNCs too.. the only problem I can see is that if we ended up with correctly terminated teflon coax, thus obeying to all professional transmission rules and equations,--- we could end up putting the paraphysicists out of work....
But Seriously - BNCs should work very well..hand soldering BNCs ande even worse, SMAs can be a real PITA though...
Phono plugs have a more historical reason, I think, the early versions being above all cheap, and easily available, thus setting a standard...
High quality XLRs is another choice, and CAMACs have been seen ( AR)... a locking connector is no drawback , in my opinion....
No-no... jokes aside...
I agree completely to SMAs or BNCs, you can have gold plated BNCs too.. the only problem I can see is that if we ended up with correctly terminated teflon coax, thus obeying to all professional transmission rules and equations,--- we could end up putting the paraphysicists out of work....
But Seriously - BNCs should work very well..hand soldering BNCs ande even worse, SMAs can be a real PITA though...
Phono plugs have a more historical reason, I think, the early versions being above all cheap, and easily available, thus setting a standard...
High quality XLRs is another choice, and CAMACs have been seen ( AR)... a locking connector is no drawback , in my opinion....
Altough I would agree that there are many better connectors then RCA's I wouldn't select SMA's as those are quite fragile, also most SMA connectors are only specified for a mechanical life of 50- 100 connections/disconnections as they wear very quick.
The characteristic impedance of RCA I wouldn't worry about, in a typical audio interface the source is a voltage generator with very low impedance and the receiver is of high impedance which means that reflections are terminated at source and therefore they are not a problem. Even if the system would be made with 50ohm sending amd receiving impedance any imperfections would have almost no effect as the wave length is so much longer then the cable length thereby minimising impact of reflections.
For better audioconnectors there are many alternatives on the market like XLR, mini XLR aso but RCA is de facto standard so it is difficult to change but it is of course possible.
Regards Hans
tubetvr said:
I have some various RF devices at work(phase shifters, splitters, mixers, etc) that must have been worn out 20 times over according to that spec. I think it is a bit too conservative, but I also agree they are fragile.
I'd like N connectors on an audio amp. In fact, I think I might like heliax cable interconnects also.
Yes, I said most SMA connectors and then I meant the ones you use for cables, according to manufacturers specifications the mechanical life for these connectors are in the range I wrote.
SMA connectors for LAB equipment are often made of stainless steel or plated with special plating and made for repeated connections but they are much more expensive then ordinary cable connectors.
Regards Hans
Impedance matching at audio frequencies is totally meaningless since the characteristic impedance of a transmission line is frequency dependent.
See link http://home.mira.net/~marcop/ciocahalf.htm
Nothing wrong with SMA connectors, they do their job even at audio frequencies. I would not use them, they are difficult to work with.
RCA connectors can be used at VHF frequencies with good result.
See link http://home.mira.net/~marcop/ciocahalf.htm
Nothing wrong with SMA connectors, they do their job even at audio frequencies. I would not use them, they are difficult to work with.
RCA connectors can be used at VHF frequencies with good result.
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