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Audiophile
One who has exceptional interest, taste and discernment in audio systems.
Capacitor
An electrical device of a variety of designs and materials that has the nature of opposing DC and low frequency electricity. Can store electrical charges, sometimes at painful, dangerous or even deadly levels.
Crossover
A combination of electrical components creating two or more frequency filters, the purpose of which is to prevent certain frequencies from reaching certain drivers.
Decibel (dB)
A measure of power relative to something else.
DMM
Digital Multimeter
Driver
The mechanical device that converts the electrical signal into air vibrations. Also known as a transducer.
Enclosure
The box or cabinet in which is housed a driver and related electronics.
Filter
Part of a crossover.
Frequency
The rate of cyclical, repeated change in an electrical, acoustical or similar field.
Hertz
The unit of frequency, equivalent to 'cycles per second.'
Impedance
Resistance to electrical current flow, usually proportional to frequency.
Inductor
A device -- usally a coil of wire or foil -- that has the nature of opposing high frequency electricity. Such energy gets rapidly stored in a magnetic field and then discharged back into the line from which it came.
Inductance
Usually measured in milliHenrys (mH), a measure of a coil's effect upon alternating current electricity.
LCR Meter
Similar to a DMM, but instead of measuring resistance, voltage and amperage, measures capacitance, inductance and impedance (and usually DC resistance, too).
Octave
A doubling or halving of the frequency.
Resistor
A device that (usually) resists both DC and AC electricity equally.
Resistance
Opposition to electrical current flow, usually unrelated to frequency, especially if noted as DC resistance or DCR.
Signal Generator
An electrical device that creates sine waveforms, typically of small voltages, at a variety of wavelengths as low as one Hz (cycle per second), and extending to many thousands or millions of Hz.
Speaker
Usually refers to the complete box and contents in which is housed one or more drivers.
Transducer
See driver.



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Arpeggio Music and Sound, 805 NW Alder St, McMinnville, OR, USA. 97128
Telephone 503-472-0688; FAX 503-434-5803; Hours 10 AM - 5 PM Pacific Time, Monday through Friday
Visits by appointment only.