R
RCA
Cable A cable that carries
low-level car audio signals from the radio
to the amplifier.
Radio Frequency Interference (RFI) -
Electromagnetic waves between the
frequencies of 10 KHz and 300 GHz that can
affect susceptible systems by conduction
through sensor (tape head) or power input
lines, and by radiation through space.
Remote Turn On Lead - The lead from the
head unit which supplies a signal (12V+) to
the "remote turn on" lead of the amplifier
turning the amplifier on when the head unit
is turned on, and allowing the amplifier to
be mounted in a location out of reach of the
user. This is NOT the amplifier's main
source of power.
Resistance
A measure of the resistance to the flow of
current.
Resistor
- An electrical device that opposes the flow
of current. The higher the value of
resistance the lower the current will be.
Resonance
Vibrations that are transferred from the
speaker to other parts of the vehicle, such
as road noise.
Resonant
Frequency The frequency at which an
object vibrates.
RF
Modulator - A device that converts an
audio
signal into a radio frequency. |