Glossary; Input Sensitivity - VINCENT SA-T7 MK Bedienungsanleitung

Audio Sources/Source devices
These are the components of your HiFi system and
all other appliances, whose sound you want to hear
over the system and are thus connected to the
preamplifier, amplifier or receiver. This includes
CD players, DVD players, tuners (radios), cassette-
players, DAT recorders, personal computers, record
players, portable audio devices and many more.

Input sensitivity

Term for the smallest average (RMS) input voltage
which causes the maximum output power at the ma-
ximum volume setting on the amplifier. Examples:
100 mV to 500 mV (Millivolts) on line level inputs,
2 mV to 5 mV on the phono MM input or 0.1 mV
to 0.5 mV on the phono MC input.
dB Level
This is a way of describing any physical quantity; it
is a common measurement for signal voltages and
the volume. It is given in decibels (dB). Alternating
signal voltages below 1V (RMS) are described as
"line level" voltages, which are suitable as music
signals for amplifier inputs. Inputs on amplifiers
(mostly represented by RCA sockets), which are de-
signed for signals on the CD player, tape recorder,
DVD player etc. are also referred to as "line level
inputs". Those signal inputs must not be confused
with inputs that accept preamplified signals.

GLOSSARY

RCA
RCA is the American name for a type of coaxial
connectors and sockets, originally the abbreviation
for "Radio Corporation of America", the name of
a United States company. Both the plug and cable
consist of a rod-shaped inner lead and a cylindrical-
shaped outer lead. This enables a mono audio signal
or a video signal to be transmitted. Compared to
the XLR plug connector, this type of connection is
also called "unbalanced signal connection".
Dynamics
The volume difference between the quietest and the
loudest sounds possible in audio signals, without
distortion or transition to noise.
Output impedance
Term for the AC internal resistance of the driving
signal source, here the preamplifier. The output
impedance of the signal source typically should be
significantly lower than that the input impedance of
the power amplifier. Exception: For power ampli-
fiers with transmitter input an impedance matching
to 600 ohms is advantageous. Since between
preamp and power amp the connection should be
done via coaxial shielded cables for the best pos-
sible reproduction the output impedance should be
designed so that the connected cables do not have
disturbing influence to the signal transmission. Typi-
cal cable impedances are 50 - 75 ohm. The output
2 of the SA-T7MK is designed optimally for this
cable types.
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