Many thanks, Anthony, for the information which I was seeking. I am actually looking to make three 25-30 ft. subwoofer cables and while the LV-77S is on my short list of cables, I have enough Belden 1694A left over from rewiring my antenna and cable system and it has a solid 18 gauge copper conductor. Thus, I could make my own cables using the F-Conn RCA's and it would take just a few minutes OR order premade cables terminated with Canare RCAs at reasonable prices from BlueJeans (with total price about the same or less than if I purchased the Canare wire PLUS the crimper PLUS the overly expensive Canare die). BUT, if I made my own, I would be concerned about the F-Conn RCAs not maintaining their impedance all the way to the tip as you pointed out.I have not used the Liberty crimp connections, but I can speak for the F-conn and Canare. The Canare are better connectors all around. The F-conn are simpler to install, but don't maintain the 75 Ohm impedance all the way to the tip, which was the primary design goal of the Canare connectors.
However, the F-conns are cheaper and you would be hard pressed to hear a difference in short runs. A drawback is that you can't use stranded center conductors with the F-conns (if memory serves). Which is a shame, since I love using the LV-77S for interconnects due to its great flexibility.
The Canare are a much beefier connector and it feels like it makes a better grip on the component when you hook it up.
don't get me wrong, the F-conns are good connectors -- fast to install, not too expensive, wide industry following (i.e. you can get them a lot of places unlike the Canare stuff).
Again, no experience with the Liberty connectors.
Hope this helps,
Anthony -- I also thought that the Liberty compression RCA connectors looked good and without any proof or anecdotal stories about them comparing them to the excellent Canare crimped RCAs, I am dubious. Since I do not have golden ears, I would not want to do a double blind experiment with a Canare terminated subwoofer cable vs. a Liberty or F-Conn compression terminated cable -- at my age, such experimenting has no appeal like it did a few decades ago:wits-end:Hey Mike, I just finished looking at the Liberty connectors. They seem on par with all of these. Good grip center connector, looks to be easy strip and crimp, and the connectors look beefy and well made.
The inspection window is a novel idea as well to see if the compression ring seated all the way. One thing I like about the Canare is that you can hear and feel a click when the center pin locks into the RCA connector.
I don't think you can go wrong with either. If you want to save yourself the tooling costs, BlueJeansCable is a great company to deal with. I personally have enjoyed making my own cables (for me and customers). It amazes people how great these relatively cheap cables can sound -- especially when they're coming off Audioquest, MIT, or Monster products at much higher prices.
Also, if you do decide to get the tools yourself, check out ebay and other places. I ocasionally see these crimpers used. I know Parts Express has a generic crimp tool that works well with most of the F-conn stuff and is only $30. As for the Canare, I ended up with the real deal and don't regret it. They're crimp, stripper, and dies are VERY well made. Good solid feel and easy to use (and more importantly, easy to tell when you are doing everything correctly).
Thanks for the input Wayne -- that is enough to get my curiosity up and take some spare 1694A coax, puchase a couple of Liberty and a couple of F-Conn RCA compression connectors (IF I can purchase that small quanity although the shipping would be a killer for 2 connectors) and give them a try running the coax across the floor to the subwoofers -- my dedicated HT is under construction and a couple of months away from completion, so plenty of time to test -- while I don't really like testing any more (age can do that), I still have plenty of curiosity OTOH.onder:
No need to stress over the Canare. Subwoofer applications are about the least critical of any in a home theater; people use standard coax for them all the time. The impedance issue really only relates to video applications anyway. I expect that any RCA capable of being crimped directly to coaxial cable is going to be 75 ohm. It pretty much has to be.
A BIG AMEN to that testing/tweaking --same here, in my 20's I also spent more time tweaking than listening. Now I want to sit back and enjoy the sights and sounds.And I also agree that the double blind testing is too much now. I just want something that works, is a good value, and that I like. I spent more time in my early 20's trying to tweak my system than actually listening to it! Now I just want to enjoy it.
Good luck and let us know how the Liberty stuff measures up.