Glossary

R

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RMS: Root Mean Square

Method used to calculate continuous average power output of an amplifier.

Re

The DC resistance of a speaker voice coil.

Remote Out

A "turn on signal" source for amplifiers and signal processors.

Resistance

The property of some materials to restrict the flow of electricity. Measured in ohms.

Resonance

The tendency of an object to vibrate at a certain frequency.

Rigitex Woofer Cones

This cone is made of polypropylene and has stiffening rubs allowing the cone to be lighter. The result is increased efficiency making it an ideal cone material for speakers that will be driven by a factory head unit.

Rip Stop Spiders

Spiders made of high strength synthetic (often aramid based) materials that are resistant to tearing.

Ripple

Any deviation from flat response in a passband.

Rms

The mechanical resistance of a speaker's suspension losses.

Roll-off

The attenuation of frequencies above or below a certain point.