Un poco más de literatura

The Dos and Don’ts of Bi-Wiring

It’s easy enough to establish whether your speakers will benefit from bi ortri-wiring, or not – just try it out and see. Any competent dealer shouldbe equipped to demonstrate the difference, but there are a number ofthings to take into account:

• Always use the same cable to feed each leg of the crossover.

• Only use the best cable that you can; one run of cable will invariablysound better than two runs at half the price.

• Many speakers sound better bi-wired simply because the supplied links are sonically inadequate. The metal plates or wire jumpers might not seem like they have a big effect, but they do. So whilst a speakermight sound better bi-wired than with its own jumpers in place, it’sa fair bet that the same cables wired in a shotgun configuration (orall wired to the bass terminals) and used in conjunction with purposebuilt links, like the Norse Jumpers, will offer better performance still.

• Just because your speaker offers multiple input cabling doesn’tmean that bi- or tri-wiring will necessarily produce better results.

Por cierto, de la conexión cruzada mejor ni hablamos.... no? Sobre esto también hay abundante teoría. A mí (siiiií, yo lo pruebo todo) particularmente me suena igual de bien cruzando que sin cruzar, siempre que tenga los jumper de cable. Con jumper de chapa me sonaba bastante mejor la conexión cruzada (evidentemente).

Según Nordost:

Often, the very best results are achieved using a diagonal connection.This involves connecting the red cable to the bass/mid terminal andthe black to the treble, with the jumpers arranged accordingly, bass totreble on the red (or +ve) side of the crossover, treble to bass on theblack (or -ve) side. This is slightly more confusing to wire, however, witha little extra care and patience the results can be well worthwhile, andonce you are familiar with bi-wiring procedures this often becomes thenew default set up, offering greater air, transparency, dimensionalityand subtlety.

Según Eichmann:

Preferred connection of a single-run express™ Cable to a speaker with two sets of binding posts is a cross-wire configuration.
The cross-wire configuration directs the electron flow in at the high frequency terminal and out at the low frequency terminal, reducing interaction between tweeter and woofer.

Connect signal conductor (red) to positive input of HF binding posts.
Connect return conductor (black) to negative input of LF binding posts.

When using the cross-wire connection make sure you retain the links between the binding posts, or better still - use small lengths (may be 40 - 60mm) of the return oxygen free copper (OFC) conductor from express™ speaker cable to link binding posts.

Otro compañero americano que defiende la teoría:

It seems hard to believe, but the driver(s)fed from where you directly connect your single speaker cable (+ & -) will sound noticeably better than the driver(s) fed from jumper connections.

The best solution (as others have mentioned)is a cross type of connection, i.e. connect your positive wire to the positive HIGH terminal and the negative wire to the LOW negative terminal. Then use the jumpers to tie the two positives together and two negatives together.

If you are a non-believer do the experiment yourself. Just try connecting your wire to the HIGH terminals of your speaker and jumpering down to the LOW. Now listen to your system; the tweeter (and midrange in the case of a three-way) will sound clearer and more articulate than the bass portion of the speaker. Now reverse things and make the direct connection to the LOW terminals and jumpering up. The highs will sound softer and a bit blurred, while the bass will be better defined and articulate. Last, use the cross method described above and listen again. Their will no longer be a disparity of sound between the top and bottom of the speaker. You will have better balanced sound, but not what you would get with proper biwiring. You have just averaged the loss across the whole speaker.

This happens on every speaker I have ever tried, even when I have made very high quality pure silver jumpers.

En cualquier caso, parece que hay muchas teorías sobre como las diferentes conexiones influyen en el sonido de altavoces con conexión multiple. Unas defienden los puentes de calidad, otras el bi-cableado, otras la conexión cruzada, otras no ven diferencias... Yo tengo mis propias experiencias y se lo que me funciona. Cada uno tendrá las suyas y sabrá lo que le va bien con su equipo, por lo tanto esto es sencillo... todos felices y a comer perdices. Lo importante es que la información fluya, porque quizás alguien encuentre en ella un pequeño tesoro si le proporciona alguna mejora en su equipo.

Saludos