Hi-Fi Wiki
Master the language of high-fidelity audio and advanced home cinema. Explore clear, professional definitions of acoustic concepts, AV technology, and audiophile terminology.
Balanced Audio Connection
Carries opposite-polarity versions of a signal plus a reference conductor so differential inputs can reject noise picked up along the cable run.
Banana Plugs
Connectors for speaker cables that ensure a secure, low-resistance connection to binding posts, simplifying setup and maintaining signal quality.
Bass
The low-frequency range of an audio signal, responsible for the deep, rich sounds and rhythmic impact in music.
Bass Management
Routing and filtering that redirects low frequencies from selected channels to subwoofers using crossover settings suited to speaker capability and system layout.
Bass Reflex (Ported Enclosure)
A loudspeaker enclosure using a tuned port to combine rear radiation from the woofer with its forward output, extending low-frequency efficiency around tuning.
.webp)
Bass Trap
An acoustic treatment device designed to absorb low-frequency sound energy, reducing room resonances and standing waves.
Belt-Drive Turntable
Uses an elastic belt between motor and platter, mechanically separating the motor from the record to reduce vibration while maintaining controlled rotational speed.
Bi-Amping
Uses separate amplifier channels for different loudspeaker frequency sections, such as bass and treble, allowing independent power delivery and potentially greater control.
Bit Depth
The number of bits used to represent each audio sample in digital recordings, affecting resolution and dynamic range.
Blu-ray Player
A high-definition optical disc player that delivers superior video and audio quality for home theaters.
Bone Conduction Headphones
Devices that transmit sound vibrations through the skull bones, bypassing the eardrum for an alternative listening experience.
Bookshelf Speakers
Compact, freestanding speakers designed to fit on shelves, delivering high-quality audio in small to medium rooms.
Cantilever
The small rod connecting a cartridge stylus to its generator mechanism, transmitting groove motion while its mass and stiffness influence tracking behavior.
Cartridge Alignment
The precise adjustment of the cartridge’s position on the tonearm to ensure optimal tracking and minimal distortion during playback.
Cartridge Compliance
A measure of how easily a cartridge suspension deflects under force, important with tonearm effective mass for determining the arm-cartridge resonance frequency.
CD Player
An electronic device that reads audio CDs and converts the digital data into analog signals, typically utilizing an integrated DAC for playback.
CD Transport
A dedicated device that extracts digital audio data from a compact disc without additional processing, enabling external DACs to deliver enhanced audio fidelity.
Ceiling Speakers
Compact speakers installed in ceilings for unobtrusive sound distribution, ideal for home theaters and commercial environments.
Center Speaker
The center-channel loudspeaker in a surround system, primarily anchoring dialogue and centrally positioned sounds to the picture and listening area.
Class A Amplifiers
Amplifiers whose output devices conduct throughout the full signal cycle, offering simple linear operation but relatively low efficiency and substantial heat generation.
Class AB Amplifiers
Amplifiers combining aspects of Class A and Class B operation so output devices overlap around zero crossing, balancing linearity, power, and efficiency.
Class D Amplifiers
Switching amplifiers whose output devices operate mainly as high-speed switches, providing high efficiency and compact power delivery with an output reconstruction filter.
Clipping
Distortion that occurs when an audio stage is asked to exceed its available voltage or current range, flattening waveform peaks and generating harmonics.
Closed‑Back Headphones
Headphones featuring sealed ear cups that block external noise and prevent sound leakage, ideal for focused, private listening.
