The 1st conduction is the audio signal itself and the 2nd is a ground and often a shielding.
Balanced vs unbalanced instrument cables.
Any noise picked up along the cable run will typically be common to both legs.
Unbalanced cables work great for connecting a guitar to an amp for instance but because they are not very good at suppressing noise from outside interference unbalanced cables should have a maximum length of 15 20 feet 4 6 meters especially when used in noisy environments and with signals that are low level to begin with such as those from keyboards guitars mp3 devices and so on.
Both legs carry the same signal but in opposite polarity to each other.
Unbalanced cables depending on their quality might be anywhere from 30 60 of the cost of their balanced counterparts.
Below is a diagram showing the difference in tips.
A balanced audio cable has a ground wire but it also carries two copies of the same incoming audio signal sometimes referred to as a hot positive and cold negative signal.
A balanced electrical signal runs along three wires.
Henry ott february 07 2005 in discussing the characteristics and performance of various interconnect systems.
The diagram above shows how the cable works.
A ground a positive leg and a negative leg.
The ts plugs are our guitar cables and the trs plugs are our 3 5mm aux cables.
Unbalanced cables aren t good for doing long cable runs for this reason in fact you should be using balanced ones if the cable needs to be more than 10 15 meters long.
As you can see there is a big difference between unbalanced and balanced quarter inch cables.
The concept of the 3 5 mm tip is the same as a quarter inch.
Unbalanced cables by dr.
The structure of a balanced audio cable is similar to an unbalanced cable with one addition.
In truth the main advantage an unbalanced cable has over a balanced cable is the cost.
A typical unbalanced cable like a 1 4 instrument cable has 2 conductors.
Two points should be kept in mind.