Israel provides an introduction to different types of audio cables and connections. Cables transmit electric currents and come in various designs for different uses. Common cable types include 1/4 inch jack, TRS, XLR-3, and RCA, which can be either balanced or unbalanced. Jack and TRS cables are for instruments and headphones, XLR-3 is used for microphones, and RCA is for consumer devices. For best results, use high quality, short cables and balanced connections for long runs to minimize noise.

1. By Israel TM

2. You can watch the entire presentation or choose the topic:
· Introduction
· Cables
· Jack & TRS
· XLR-3 & RCA
· Balanced / Unbalanced
· Ussages
· Recommendations
· Reflection

3. Introduction
 Hi! My name is Israel, my friends call me “Isra” and I’m
not a fan of cables or connections. In my band I tried
to avoid this topic for years!
 Its great to know some basics for those who are
interested and for those who not (like me), it is an
opportunity to understand your sound engineers o
technics.
 Before to continue (if you didn’t realize it) my native
language is Español, so I’ll do my best to teach you
what I've learnt.

4. Cables
 A cable is most often two or
more wires running side by
side and bonded, twisted, or
braided together to form a
single assembly
 It is used a conductor of
electric currents, generally
made of copper.
 Source: wikipedia

5. Jack
 Called “instrument cable”,
quarter inch or TS, is a
single conductor.
 It has to be as short as
possible to prevent from
noise or distortions.
TRS
 It can be used in two different ways:
 1) Stereo unbalanced: like 2 jacks in 1.
 2) Mono balanced: to minimize noise.

6. XLR-3
 Xternal Live Return or canon, it has
3 conectors. The standard mic cable.
 Like the TRS mono, it is balanced.
RCA
 The name derives from the Radio
Corporation of America, which
introduced the design.
 3 cables: 2 audio and 1 video.

7. Balanced / Unbalanced
 Unbalanced: There’s a conductor inside the cable
wich transports the signal and other using the shield.
 Balanced: There are two identical wires carrying the
audio signal, with a third conductor (foil or braid) that
acts as a shield. One wire is in phase with respect to
the source signal, the other wire is reversed in polarity
(180° out of phase at all frequencies).

8. Ussages
Jack
TRS
XLR3
RCA
Unbalanced
Professional
audio and
electrical
instruments.
Unbalanced
in stereo
mode (for
headphones)
Balanced
Unbalanced
For video and
consumer /
personal
devices.
Balanced as
mono.
Used for
microphones
and show’s
illumination.

9. Recommendations
1: Invest in high quality cables.
2: Use short unbalanced cables.
3: For long distances, use a direct box to
convert unbalanced in balanced cables.

10. Reflection
 XLR cable is named 3 because there are other
numbers.
 If you have some recommendation or things for me to
improve, feel free to ask me or give your suggestion. It
is my first english presentation, so you can help me
improving a lot watching and critiquing!
 Thank you!