Include

[CrEaTrE]

B


Back-up Battery A separate battery added to the security system as an alternate power supply to serve as a backup in case the vehicle's main battery should be disabled by a thief. Back-up batteries are typically the lead-acid gel cell type and are most effective when hidden from detection.2

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Baffle A flat panel that divides the front and rear sound waves produced by a woofer. Sometimes baffle is used to mean an enclosure or the front panel that the speaker is mounted on.4

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Balanced Input An input which compares the negative and positive sides of the signal, used to help eliminate noise.1

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Ballast Wire The name given to a special resistance wire used between the ignition switch and the engine's high voltage coil. This wire is typically composed of a carbon compound instead of normal copper.2

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Bandpass Filter In mobile electronics, a device which incorporates both high-pass and low-pass filters in order to limit and attenuate both ends of the frequency range.2

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Bandwidth Refers to the "space" in the frequency response of a device through which audio signals can pass (between lower and upper frequency limits, those points where the signal level has rolled off 3 dB).2

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Barium Ferrite A speaker magnet material made from an alloy with iron and barium for improved magnetic strength.1

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Bass The part of the frequency range made up of the low frequencies. Bass is generally agreed to be those frequencies between 20 Hz and 400 Hz.4

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Bass Reflex A vented enclosure that allows control of rear radiated sound waves.2

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Battery An electrically connected group of cells (wired in series) that stores an electrical charge and supplies a direct current (DC).4

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BBE Processing A signal processing circuit that provides improvements in imaging and spatial realism by altering the frequency and phase characteristics of portions of the input signal.1

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Bessel Alignment A particular crossover configuration which offers superior phase coherence in exchange for slightly lower level match.1

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Bi-Amplification Some speaker systems with multiple drivers do not contain a crossover network, and they require a separate amplifier for each frequency range. The bi-amplified system still requires an active or passive crossover network to send the proper frequency band to each amplifier and speaker, but it precedes the amplifier and speaker and does not handle the power amplifier output.4

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Bias An unbalanced sound level.2

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Bipolar Transistor A transistor that contains two p or n junctions or diodes between two layers of opposite POLARITY material (emitter and collector) .4

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Blank Skip A cassette feature that automatically detects blank areas of the tape over 8 seconds in length and activates Fast Forward, until the end of either the tape or audio information is reached.1

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Boomy Usually refers to excessive bass response, or a peak in the bass response of a recording, playback or sound reinforcement system.2

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Brain The common term used to refer to the main control unit of a security system. (Also see Control Unit).2

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Bridged In a multi-channel amplifier, the connection of two channels to drive a single load. The input signal is split, and then the phase of one of the signals is inverted. The non-inverted signal is sent to the left amplifier and the inverted signal is sent to the right amplifier (L+R-). The load is connected between the two outputs so it receives twice the voltage at a given input level. The resultant power is much greater than the two 4-ohm channels combined.4

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BTL Bridged, Transformer Less. A circuit design wherein two small Integrated Circuit (IC) amplifier channels are bridged together to provide a single, larger output circuit. These circuits are limited by their current capabilities and the amount of heat they generate.1

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BTM Best Tuning Memory. A feature in which the tuner selects radio stations by signal strength, and assigns them to presets in numerical order, according to their frequency value.1

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Burr-Brown D/A A high-end D/A converter offering superior sound quality and performance. "Burr-Brown is the manufacturer's name.1

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Butterworth Filter A filter with a pass-band with no ripple but usually sacrifices some steepness in attenuation.2