Even though the filter circuitry is at the far end of the cable there will be no low frequency current present in the whole of the cable leading up to that point. This is a hard concept to grasp first time. If you get it great, read on. If not then keep re-reading to this point until you do.
The same goes for speaker cable 2, except in the LF network there is 2 foot six feet of water which the motorbikes cannot negotiate so they are all stationary, whereas the trucks can plough on through.
So, in speaker cable 2 only the low frequency current will be flowing. Effectively, as if by magic, we have separated the high and low frequencies and sent them down different cables to the correct driver. For one thing we are dealing with alternating current, so the traffic is flowing in both directions alternately.
In the speaker cable, current flows because spare electrons in the crystal lattice swap places and because of the electric field provided by the amplifier they do this in a net direction rather than randomly, and so a current flows. The theory in favour of bi-wiring is that if both low and high frequencies are present in the same conductor unwanted distortions can be created. This is analogous to the low frequency and high frequency signals being present in the same cable; they have combined within the transfer medium to create a new frequency which was not in the original signal in a process known as intermodulation.
Wherever there is non-linearity in a system which carries multiple different frequencies there will be amplitude modulation made up of the sum and difference of the original frequencies and in addition, harmonics of these sum and difference frequencies. Unlike some types of harmonic distortion this type of distortion is not nice to listen to and although non-linearity in good hi-fi equipment is generally very small, it is enough to produce intermodulation distortions which are bothersome to the listener.
Now we are close to proving that bi-wiring has some useful sonic benefit. We have accepted that the two cables carry different signals and that by keeping them separate we may have prevented the production of otherwise harmful intermodulation effects. If it was possible to measure intermodulation distortion in a single wired speaker and then to measure a reduction of the same in that speaker once it was bi-wired, we could make a really good case for the procedure.
Some work on this subject has been published 1 by the Audio Engineering Society. A split band spectral analysis methodology is described in the paper which uses a ten tone system split into two bands, one high and one low, starting at 5kHz and Hz respectively. These impulses and their attendant frequencies were chosen carefully so that any frequencies measured outside of these fundamentals could be attributed to intermodulation and cross-modulation effects rather than being masked by harmonic distortion Risch, Using the same methodology as described in the paper we generated a similar test tone and conducted our own investigation to see if we could measure any differences between single wired and bi-wired speakers.
Learn more about how to use banana plugs with speaker wire. Bi-Amping further isolates the different frequency signals by giving the high frequency and the low frequency speakers their own amplification channel. Some multi-channel receivers allow you to use four of the available amplification channels to independently power the upper and lower sets of binding posts.
Some audio enthusiasts feel that bi-amping improves the sound during more demanding moments of music or movies. Essentially it is like having four-wheel-drive when going off road; on rough, rocky terrain it is often better to send power directly to each of the wheels. In your sound system, when the sound is more demanding, sending power to each specific speaker can produce sound that feels less constrained.
Another benefit to this setup is that it gives you the option of buying multiple amplifiers to power your speakers. That way you could look for amplifiers based on sound quality, without having to worry so much about the amount of power the amplifier can produce.
The process of bi-amplifying your speaker setup is almost identical to that of bi-wiring. The only difference is that after you have two sets of cable coming from each speaker, you attach each of these sets of cable to its own set of binding post on the amplifier or to different amplifiers if you want. The differences offered by these solutions may seem minimal to many listeners, but true audio enthusiasts could find one of these techniques well worth the extra effort.
Weather or not it would be audible remains debatable. Back in the 90's, isolation of the woofer's back-EMF was the stated primary reason for bi-wiring.
However, I am not following Mr Lesurf approach this time. However, on the bi-wired arrangement the calculation is based on double runs of cable. This in itself is causing rudimentary circuit differences due to reduced cable resistance, which has little or nothing to do with the impact of the bi-wire arrangement. A comparison between the bi-wire confirguration and the figure 3. The complete reasoning also neglects the impact of cable inductance. This is likely not a prudent assumption in this situation since inductance is rather dependant on wire gauge.
Bi-wiring will double the effective resistance and significantly increase the inductance, as seen by the amplifier, compared to a single wire arrangement using the effective total gauge of the bi-wire cable. Finally I think it is a awfully complex reasoning to prove that reducing the cable resistance by half will have an at least theoretical impact additionally without knowing it due to the muddled reasoning Personally I find this article Why bi-wiring has no benefits more of an understandable read about the impact of bi-wiring.
Although perhaps not the final say on this subject, it gives a good introduction and debunks some of the most notoriously proposed bi-wire benefits. The result would be a more balanced sound.
With the popular bi-wiring, the bass frequencies, as well as the treble and mid-range frequencies each, have their own cable ; with tri-wiring, each frequency range is even routed via its own cable. HiFi fans are still arguing about whether this actually brings an advantage and what exactly this advantage should look like.
So if you have the right hi-fi components, you can try out bi-wiring and see for yourself. However, it is important that the hi-fi components are designed for this: The amplifier must have at least two connections per speaker channel.
The loudspeaker must also have the appropriate connections, as shown in the picture:. On the picture, you can see the back of the Ultima 40 Mk2.
The small gold-plated metal clamps are the speaker bridges. You can find these on the current model of Ultima They are the standard and are always installed so if you want to do bi-wiring you will have to remove them. But even here there is room for improvement for the HiFi fan. Although, as with bi-wiring, no actually measurable difference can be determined, high-quality cable bridges are still very popular.
A cable bridge is basically nothing more than a very short HiFi cable that is used instead of the speaker bridge. These are mostly high-quality cables, usually, gold-plated connectors are used.
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