Fbt AMICO 10 USB User Manual - page 9
CONNECTORS
XLR connectors are “female” for input devices and “male” for output signals. As a matter of fact, the XLR-XLR connecting cables used, for instance, to connect
a microphone to a mixer always have a female socket at one end and a male plug at the other end.
They are three-pole connectors often used to transmit balanced mono signals. XLR three poles correspond to ground (1), positive signal (2) and negative
signal (3) respectively. Generally, Cannon are used to connect microphones to mixers or preamplifiers; otherwise, they are often used to connect the
balanced outputs of a mixer to loudspeakers and monitors.
Jacks are the typical connectors used for transmitting two separate signals of two channels -right and left- by means of a single connector and, thus, they can
be mono or stereo.
Mono (TS) Jack connectors -also called unbalanced- differ from stereo (TRS) jack connectors –also called balanced- in their structure. Mono jack plugs are
divided into two parts, Tip and Sleeve, to which the two poles are connected: the two poles are, respectively, the real signal, through the wire of the mesh
(positive pole), and the earth, located at the level of the metal shielding mesh beneath the rubber protective coating.
Stereo or balanced Jack connectors are divided into three parts since they feature a central Ring connected to a second wire, which is the third pole (negative
pole). In this case, conventionally, as for balanced signals, the left channel travels over the tip and the right one over the ring. Stereo Jack connectors are often
used instead of the mono ones when a mono balanced signal shall be transmitted, i. e. in order to generate an audio signal without earth hum and interference
and, thus, as faithful to the original as possible.
Balanced connections are recommended mainly if cables are longer than three meters since the length is proportional to the possibility of interferences and,
therefore, it could affect signal “cleanliness”.
RCA connectors cannot be balanced since they only have two poles: signal (centre pin) and ground (outer ring). Therefore, they are unbalanced mono
connectors.
This type of connectors, often paired, are mainly used for the stereo signals of hi-fi devices such as CD or record player, etc.
SPEAKON is a connector which is specially adapted for connecting power terminals to loudspeakers; when inserted in an appropriate socket it locks so as to
prevent accidental disconnection; moreover it is equipped with protection against electrical shocks and guarantees the correct polarisation.
7
stereo
mono
schema
diagram
schema
diagram
RCA PHONO JACKS
CONNESSIONE DI USCITA STEREO
CONNESSIONE DI USCITA BRIDGE
AL DIFFUSORE
TO SPKR
AL DIFFUSORE
TO SPKR
USCITA POSITIVA
POSITIVE OUT
USCITA NEGATIVA
NEGATIVE OUT
USCITA NEGATIVA
NEGATIVE OUT
USCITA POSITIVA
POSITIVE OUT
STEREO OUT CONNECTION
BRIDGE OUT CONNECTION
maschio
male
femmina
female
schema
diagram
BASE
PUNTA
TIP