R

RCA
Connector type for line-level audio signals. Shielded coaxial design. Red = right, white = left. Run separate from power wires (6" minimum). Quality matters: poor RCAs introduce noise. → See also: Preamp Output, Ground Loop
Chapter 2.3

REW (Room EQ Wizard)
Free acoustic measurement software. Measures: frequency response, impulse response, waterfall plots, THD. Requires: calibrated microphone (UMIK-1), USB audio interface or soundcard. Essential tool for tuning. → See also: UMIK-1, Measurement
Chapter 4.3

RMS (Root Mean Square)
True power measurement method. RMS power = continuous sustainable power. Only meaningful power specification. Ignore: peak, PMPO, MAX, instantaneous. Look for CEA-2006 certified RMS ratings. → See also: CEA-2006, Power
Chapter 1.3