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Post by avary1 on Jun 13, 2017 7:26:52 GMT -5
Read an article about Nordost jumpers for speakes by Victor Chavira and in the article he discusses a process called "diagonal bi-wiring fron the Nordost website. Using the jumpersas normal, you connect the positive speaker lead to the woofer/midrange on the speaker post and the negative to the treble post.
Has anyone heard of this or even tried it?
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Post by 405x5 on Jun 13, 2017 7:30:45 GMT -5
Read an article about Nordost jumpers for speakes by Victor Chavira and in the article he discusses a process called "diagonal bi-wiring fron the Nordost website. Using the jumpersas normal, you connect the positive speaker lead to the woofer/midrange on the speaker post and the negative to the treble post. Has anyone heard of this or even tried it? Be certain the molecules are in precise alignment with the planets 🌎 before attempting this. Bill |
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Post by gus4emo on Jun 13, 2017 7:37:35 GMT -5
Read an article about Nordost jumpers for speakes by Victor Chavira and in the article he discusses a process called "diagonal bi-wiring fron the Nordost website. Using the jumpersas normal, you connect the positive speaker lead to the woofer/midrange on the speaker post and the negative to the treble post. Has anyone heard of this or even tried it? Be certain the molecules are in precise alignment with the planets 🌎 before attempting this. Bill Lol.... |
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novisnick
EmoPhile
CEO Secret Monoblock Society
Posts: 27,223 
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Post by novisnick on Jun 13, 2017 7:42:49 GMT -5
Read an article about Nordost jumpers for speakes by Victor Chavira and in the article he discusses a process called "diagonal bi-wiring fron the Nordost website. Using the jumpersas normal, you connect the positive speaker lead to the woofer/midrange on the speaker post and the negative to the treble post. Has anyone heard of this or even tried it? Be certain the molecules are in precise alignment with the planets 🌎 before attempting this. Bill Geezzzz! Everybody knows that its only applicable on a leap year! 😋 |
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KeithL
Administrator 
Posts: 9,934
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Post by KeithL on Jun 13, 2017 8:25:08 GMT -5
It's called "wiring half of the speaker out of phase". The IDEA comes from the fact that some crossover filters, in combination with the acoustic "depth" of some drivers and cabinets, introduce enough phase shift that two adjacent drivers (perhaps the woofer and midrange) end up acoustically out of phase. If that happens, then the correct way to wire them electrically is to reverse the phase on one of the drivers. (If two drivers are actually playing out of phase you'll end up with a big notch in frequency response at the crossover point.) NOTE, however, that this is something the speaker designer should have taken into account. In other words, arbitrarily flipping the connections to see if you like it better is equivalent to redesigning the crossover.... and equally likely to do more harm to the sound than to improve it. Of course, in this case, it's easy enough to reverse.... and usually won't actually break anything.... WARNING: in most speakers with bi-amp jumpers, the two sections of the speaker are entirely isolated, so it's safe to flip one of them. ( HOWEVER, if your speakers are a little odd, and they're internally common-grounded, you'll probably blow out your amplifier.) [EDIT: I was reading this as "actually wiring the speakers out of phase" - which seems to be how MANY people on the various forums seem to be doing it. However, it seems like the original suggestion was probably simply to put the jumpers on normally, then connect one feed wire to the top terminal on one side, and the other one to the bottom terminal on the other side. While pointless, this at least makes sense, and shouldn't change anything for the worse. ] Read an article about Nordost jumpers for speakes by Victor Chavira and in the article he discusses a process called "diagonal bi-wiring fron the Nordost website. Using the jumpersas normal, you connect the positive speaker lead to the woofer/midrange on the speaker post and the negative to the treble post. Has anyone heard of this or even tried it? |
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Post by macromicroman on Jun 13, 2017 8:30:23 GMT -5
So for most people the take home message is "Just don't do it".
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Deleted
Deleted Member
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Post by Deleted on Jun 13, 2017 8:34:51 GMT -5
This might be a way to decrease the effect of what little contact resistance is there between the bi-amp terminal jumpers and the binding posts themselves. But if there is an effect on frequency response or tonal balance, then it would actually be desirable to have the flexibility to connect the leads to either the tweeter or the woofer depending on which system passband you feel needs a little bit 'more'. In my experience I've heard only a slight effect that I attribute to perceptual bias and I don't consider it to be meaningful.
Another way to reduce/eliminate/change the sonic effects of the jumpers, if any, is to remove them and replace them with short lengths of speaker wire.
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Post by 405x5 on Jun 13, 2017 9:26:17 GMT -5
" however, that this is something the speaker designer should have taken into account. In other words, arbitrarily flipping the connections to see if you like it better is equivalent to redesigning the crossover.... and equally likely to do more harm to the sound than to improve it. Of course, in this case, it's easy enough to reverse.... and usually won't actually break anything.... WARNING: in most speakers with bi-amp jumpers, the two sections of the speaker are entirely isolated, so it's safe to flip one of them. ( HOWEVER, if your speakers are a little odd, and they're internally common-grounded, you'll probably blow out your amplifier.)" Yep....this is my issue with messing around like this. Fooling around on this rather short signal path trying to reinvent the wheel on an aspect of the loudspeaker that, in all likelihood has been already well considered by the original designer. For similar reasons, I avoid used amplifiers, and double check the crossover wiring of vintage loudspeakers BEFORE connecting them to an expensive amplifier, lest they've been subjected to "the great experiment" Bill |
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Post by avary1 on Jun 15, 2017 11:00:54 GMT -5
Thanks for your feedback. I tried the method but have returned to my normal setup. Just thought it was an interesting concept but did not like the low end response.
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Post by bluemeanies on Jun 15, 2017 15:34:45 GMT -5
I did it, and still have my 803's wired the Nordost way. When I had my 804's I just used the standard bi-wired method with jumpers.
I like what I hear but that is my opinion and my system.
First seeing the article on the Nordost site before changing anything my dealer who sells Nordost cables gave me the thumbs up and no mention of damage to anything was mentioned. I have dealt with them for several years and they are considered to be a reputable hi-end store.
I am not saying this to disagree with Keith. I am just mentioning other people's opinions.
Quality of equipment...speakers amplifiers could be part of the formula.
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Post by vneal on Jun 15, 2017 15:56:00 GMT -5
This might be a way to decrease the effect of what little contact resistance is there between the bi-amp terminal jumpers and the binding posts themselves. But if there is an effect on frequency response or tonal balance, then it would actually be desirable to have the flexibility to connect the leads to either the tweeter or the woofer depending on which system passband you feel needs a little bit 'more'. In my experience I've heard only a slight effect that I attribute to perceptual bias and I don't consider it to be meaningful. Another way to reduce/eliminate/change the sonic effects of the jumpers, if any, is to remove them and replace them with short lengths of speaker wire. You mean like this? Back of my B&W CM10's  |
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Post by gus4emo on Jun 15, 2017 21:13:32 GMT -5
What's wrong with these people, lol....
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Post by vneal on Jun 16, 2017 3:34:53 GMT -5
Who you calling these people?
I resemble that ! LOL
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Post by vcautokid on Jun 16, 2017 5:24:33 GMT -5
From the something to do files on your audio system. On the same level as using Unicorn Blood on the connectors. Or Moon rocks under your Preamplifier, or memory foam to keep your pet rock comfortable....and....you get the idea. 😆😊😆😊
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