aleftwich22 Posted July 4 Share Posted July 4 I recently shortened my speaker-wires and now have some length left. Now i´m wondering if i should make some jumper-cables to replace the brass jumpers on the bi-amp wire terminals of my RF3s. The cable would be Audio quest Indigo. What are Your opinions and experiences, audible difference to justify this mod? Quote Link to comment Share on other sites More sharing options...
CWOReilly Posted July 4 Share Posted July 4 14 minutes ago, aleftwich22 said: I recently shortened my speaker-wires and now have some length left. Now i´m wondering if i should make some jumper-cables to replace the brass jumpers on the bi-amp wire terminals of my RF3s. The cable would be Audio quest Indigo. What are Your opinions and experiences, audible difference to justify this mod? I doubt you’d notice a difference. I say not worth the effort. 2 Quote Link to comment Share on other sites More sharing options...
billybob1 Posted July 4 Share Posted July 4 (edited) 15 minutes ago, aleftwich22 said: I recently shortened my speaker-wires and now have some length left. Now i´m wondering if i should make some jumper-cables to replace the brass jumpers on the bi-amp wire terminals of my RF3s. The cable would be Audio quest Indigo. What are Your opinions and experiences, audible difference to justify this mod? Either way, yet I replaced mine with copper jumpers. Change may not be noticeable. Prefer copper jumpers. See Welcome back! Edited July 4 by billybob1 2 Quote Link to comment Share on other sites More sharing options...
opnly bafld Posted July 4 Share Posted July 4 Will it cost anything to try? Get another set of cables and bi-wire. 😉 Quote Link to comment Share on other sites More sharing options...
Moderators Travis In Austin Posted July 4 Moderators Share Posted July 4 I agree with what’s been stated. Do it if it will make you feel better (and there was a time when doing that would make me feel better). If it won’t bother you I wouldn’t mess with it. Quote Link to comment Share on other sites More sharing options...
MC39693 Posted July 4 Share Posted July 4 Always worth it because… why not? You guess which is original and which is not. I sold this RC-7, changed one set of spades for locking banana plugs and these jumpers are on a new center speaker. Quote Link to comment Share on other sites More sharing options...
Moderators Travis In Austin Posted July 4 Moderators Share Posted July 4 1 minute ago, MC39693 said: Always worth it because… why not? You guess which is original and which is not. I sold this RC-7, changed one set of spades for locking banana plugs and these jumpers are on a new center speaker. I for sure would have upgraded those. But he has the brass (gold plated?) jumpers. I think they are played because I have several sets of those jumpers that are 30 years old plus and not a bit of corrosion, tarnish on any of them. Quote Link to comment Share on other sites More sharing options...
MC39693 Posted July 5 Share Posted July 5 I confess that I did a test once with 3 sets of jumpers. OEM mystery metal bars (relatively expensive speaker), the jumpers above, and left over pieces of 12 awg mil spec silver plated copper unterminated. No difference to my old ears. I was very tempted to leave the mil spec cable bits in place. Total cost comparison; maybe $0.50 for left over mil spec bits, vs $70 for the jumpers, vs sunk cost on the OEM mystery metal bars. But you have to make the shiny jumpers, no? Quote Link to comment Share on other sites More sharing options...
mboxler Posted July 5 Share Posted July 5 Just to put things into perspective... Move the amplifier cables from the woofer terminals to the tweeter terminals. Can you hear any difference? Regardless of the jumper used, it will come into play on only half of the circuit. It will have no affect on the circuit you plug the amp into. Regardless of the jumper used, or the amplifier connection, the first component the tweeter current will pass through is a $1 cement(?) 2ohm resistor. Perhaps swapping that out with a Mills resistor would better??? I'll stop there 😎 Mike 1 Quote Link to comment Share on other sites More sharing options...
Schu Posted July 5 Share Posted July 5 Klipsch's solution to brass... I've also used Zu audio silver jumpers with good success. Quote Link to comment Share on other sites More sharing options...
billybob1 Posted July 5 Share Posted July 5 Abit back, someone posted a chart of the different conductive properties of different metals. May be worth a revisit if interested. Quote Link to comment Share on other sites More sharing options...
opnly bafld Posted July 5 Share Posted July 5 On my (recently sold) Snell KIIs I used the tweeter + and the woofer - Paper clip jumpers were not changed. 2 Quote Link to comment Share on other sites More sharing options...
billybob1 Posted July 5 Share Posted July 5 (edited) 6 hours ago, opnly bafld said: On my (recently sold) Snell KIIs I used the tweeter + and the woofer - Paper clip jumpers were not changed. Heard tell, they even do a fair job for keeping papers together. Edited July 5 by billybob1 1 Quote Link to comment Share on other sites More sharing options...
Moderators Travis In Austin Posted July 5 Moderators Share Posted July 5 7 hours ago, billybob1 said: Abit back, someone posted a chart of the different conductive properties of different metals. May be worth a revisit if interested. Think that was 20 years ago, my recollection was there were 2 EE’s that could not agree on what the term conductivity meant (conta. resistance) and what order the following would be ranked: Platinum, Gold, Silver, Copper (don’t think brass was mentioned) and factoring in a 2” run. It was a long time ago, but I remember getting quite a lot of amusement out of it. I have 6 jumpers from Klipsch products, they are all gold plated, no oxidation. What we need is JC to calculate the surface area of contact using the jumpers that came in the 90s that are larger than the binding posts, vs. the small ends of jumper cables, or banana plugs. Lastly, we will need to determine the benefits of using 10 ga wire vs, 12 ga (anything less than 12 will clearly be determined to be woefully inadequate for this application. Travis 2 Quote Link to comment Share on other sites More sharing options...
Moderators Travis In Austin Posted July 5 Moderators Share Posted July 5 There is a corollary to Beranek’s Law: If one selects his own materials and terminations for binding post jumpers it will sound better than all others. 3 Quote Link to comment Share on other sites More sharing options...
billybob1 Posted July 5 Share Posted July 5 20 minutes ago, Travis In Austin said: Think that was 20 years ago, my recollection was there were 2 EE’s that could not agree on what the term conductivity meant (conta. resistance) and what order the following would be ranked: Platinum, Gold, Silver, Copper (don’t think brass was mentioned) and factoring in a 2” run. It was a long time ago, but I remember getting quite a lot of amusement out of it. I have 6 jumpers from Klipsch products, they are all gold plated, no oxidation. What we need is JC to calculate the surface area of contact using the jumpers that came in the 90s that are larger than the binding posts, vs. the small ends of jumper cables, or banana plugs. Lastly, we will need to determine the benefits of using 10 ga wire vs, 12 ga (anything less than 12 will clearly be determined to be woefully inadequate for this application. Travis Sounds familiar, thanks! Quote Link to comment Share on other sites More sharing options...
Moderators Travis In Austin Posted July 5 Moderators Share Posted July 5 Moon Audio has some starting at 150 for a set of 4 using Cardas cable, or solid silver rhodium for $300 Parts express has the gold plated one for $8 Quote Link to comment Share on other sites More sharing options...
Moderators Travis In Austin Posted July 6 Moderators Share Posted July 6 26 minutes ago, billybob1 said: Sounds familiar, thanks! Was it this one? Seems like @Edgar put a pencil to this more recently, an EE in work related to audio and acoustics, my recollection is his conclusion was it was sliding backwards to go from gold plated brass to copper because of surface area and introducing a loop. @John Warren has a PhD in Materials Science Engineering and worked in aerospace where this stuff really matters, i.e. thermal conductivity of internal parts in turboprop and jet engines that we fly around in. He might have some thoughts. I bet the paper clips sound the best, and 2nd place would go to coat hanger wire. 1 Quote Link to comment Share on other sites More sharing options...
billybob1 Posted July 6 Share Posted July 6 Yes, a blast,lol ! Still didn't see the chart referring to. Thanks ! Quote Link to comment Share on other sites More sharing options...
Edgar Posted July 6 Share Posted July 6 12 hours ago, Travis In Austin said: Seems like @Edgar put a pencil to this more recently, an EE in work related to audio and acoustics, my recollection is his conclusion was it was sliding backwards to go from gold plated brass to copper because of surface area and introducing a loop. @Travis In Austin, that "loop" comment was made with tongue in cheek. For such a tiny portion of the signal path, there isn't much short of replacing the jumper with a resistor (or a capacitor or an inductor) that will make any significant difference. 1 Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.