Bass Reflex

picture info	Bass Reflex A bass reflex system (also known as a ported, vented box or reflex port) is a type of loudspeaker enclosure that uses a port (hole) or vent cut into the cabinet and a section of tubing or pipe affixed to the port. This port enables the sound from the rear side of the diaphragm to increase the efficiency of the system at low frequencies as compared to a typical sealed- or closed-box loudspeaker or an infinite baffle mounting. A ''reflex port'' is the distinctive feature of this popular Loudspeaker enclosure, enclosure type. The design approach enhances the reproduction of the lowest frequency, frequencies generated by the woofer or subwoofer. The port generally consists of one or more tubes or pipes mounted in the front (Loudspeaker enclosure, baffle) or rear face of the enclosure. Depending on the exact relationship between driver Thiele/Small, parameters, the enclosure volume (and filling if any), and the tube cross-section and length, the efficiency can be substantially improve ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
picture info	Bass Amplifier A bass amplifier (also abbreviated to bass amp) is a musical instrument electronic device that uses electrical power to make lower-pitched instruments such as the bass guitar or double bass loud enough to be heard by the performers and audience. Bass amps typically consist of a preamplifier, tone controls, a power amplifier and one or more loudspeakers ("drivers") in a cabinet. While bass amps share many features with the guitar amplifiers used for electric guitar, they are distinct from other types of amplification systems, due to the particular challenges associated with low-frequency sound reproduction. This distinction affects the design of the loudspeakers, the size and design of the speaker cabinet and the design of the preamplifier and amplifier. Speaker cabinets for bass amps usually incorporate larger loudspeakers (e.g., speakers are more common for bass than for electric guitar amps) or more speakers and larger cabinet sizes than those used for the amplificat ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
	Bass Reflex Spk Bass or Basses may refer to: Fish * Bass (fish), various saltwater and freshwater species Wood * Bass or basswood, the wood of the tilia americana tree Music * Bass (sound), describing low-frequency sound or one of several instruments in the bass range: Bass instruments commonly referred to as just "bass", including: * Bass guitar, the lowest-pitched member of the guitar family * Double bass, the largest and lowest pitched bowed string instrument * Tuba, often called "the bass" in the context of brass instruments *** Bass saxophone * Bass (voice type), a type of classical male singing voice * Bass clef, the musical clef used for lower-sounding instruments and voices * Bass music, broad category of electronic dance music genres, focusing on a prominent bass drum and/or bassline sound * Bass note, the lowest note in a chord * Bassline, or bass line, a term used in music for a lower-pitched part * "Bass", a song by Robyn Hitchcock from his 1986 album '' Element of L ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
picture info	Power Amplifier An audio power amplifier (or power amp) amplifies low-power electronic audio signals, such as the signal from a radio receiver or an electric guitar pickup, to a level that is high enough for driving loudspeakers or headphones. Audio power amplifiers are found in all manner of sound systems including sound reinforcement, public address, home audio systems and musical instrument amplifiers like guitar amplifiers. It is the final electronic stage in a typical audio playback chain before the signal is sent to the loudspeakers. The preceding stages in such a chain are low-power audio amplifiers which perform tasks like pre-amplification of the signal, equalization, mixing different input signals. The inputs can also be any number of audio sources like record players, CD players, digital audio players and cassette players. Most audio power amplifiers require these low-level inputs, which are line level. While the input signal to an audio power amplifier, such as the si ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
picture info	Group Delay In signal processing, group delay and phase delay are functions that describe in different ways the delay times experienced by a signal’s various sinusoidal frequency components as they pass through a linear time-invariant (LTI) system (such as a microphone, coaxial cable, amplifier, loudspeaker, communications system, ethernet cable, digital filter, or analog filter). Unfortunately, these delays are sometimes frequency dependent, which means that different sinusoid frequency components experience different time delays. As a result, the signal's waveform experiences distortion as it passes through the system. This distortion can cause problems such as poor fidelity in analog video and analog audio, or a high bit-error rate in a digital bit stream. Background Frequency components of a signal Fourier analysis reveals how signals in time can alternatively be expressed as the sum of sinusoidal frequency components, each based on the trigonometric function \sin(x) with a fixe ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
	Transient (acoustics) In acoustics and audio, a transient is a high amplitude, short-duration sound at the beginning of a waveform that occurs in phenomena such as musical sounds, noises or speech. Transients do not necessarily directly depend on the frequency of the tone they initiate. It contains a high degree of non-periodic components and a higher magnitude of high frequencies than the harmonic content of that sound. Transients are more difficult to encode with many audio compression algorithms, causing pre-echo. See also * Prefix (acoustics) * Impulse function * Onset (audio) * Transient response – a common electrical engineering term that may be the source of the idea of an acoustic "transient" References {{reflist Acoustics Sonar de:Einschwingvorgang ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
	Yamaha DGX-202 Portable Grand - Right Speaker Yamaha may refer to: People * Torakusu Yamaha, a Japanese businessman and founder of the Yamaha Corporation Companies * Yamaha Corporation, a Japanese musical instrument and audio equipment manufacturer Yamaha Music Foundation, an organization established by Yamaha Corporation Yamaha Pro Audio, a Yamaha division specializing in products for the professional audio market * Yamaha Motor Company, a Japanese mobility manufacturer, spun off from Yamaha Corporation ** Yamaha Motor Racing, the MotoGP factory team of Yamaha Motor Company Other uses * Shizuoka Blue Revs, formerly Yamaha Júbilo, a Japanese rugby team * Yamaha Stadium is a football stadium located in Iwata, Shizuoka, Iwata City, Shizuoka Prefecture, Japan, owned by Yamaha Motors, next to whose plant it is located, and was purpose-designed for use with association football, soccer and rugby union. It is the h ... , a football stadium located in Iwata, Shizuoka Prefecture {{disambiguation ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
picture info	Passive Radiator (speaker) A speaker enclosure using a passive radiator usually contains an "active loudspeaker" (or main driver), and a passive radiator (also known as a "drone cone"). The active loudspeaker is a normal driver, and the passive radiator is of similar construction, but without a voice coil and magnet assembly. It is not attached to a voice coil or wired to an electrical circuit or power amplifier. Small and Hurlburt have published the results of research into the analysis and design of passive-radiator loudspeaker systems. The passive-radiator principle was identified as being particularly useful in compact systems where vent realization is difficult or impossible, but it can also be applied satisfactorily to larger systems. In the same way as a ported loudspeaker, a passive radiator system uses the sound pressure otherwise trapped in the enclosure to excite a resonance that makes it easier for the speaker system to create the deepest pitches (e.g., basslines). The passive radiator resona ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
	Harman Kardon Speaker Harman may refer to: People * Harman (surname) * Harman Baweja (born 1980), Indian actor and producer * Harman Bhangu, Canadian politician * Harman Blennerhassett (1764–1831), Anglo-Irish lawyer and plantation owner * Harman Grisewood (1906–1997), English radio actor, radio and television executive, writer Places * Harman, Australian Capital Territory * Hărman, Romania * Harman, West Virginia * Harmans, Maryland * Harman, Virginia * Harman's Cross, Dorset, England Other uses * Harman International, an electronics audio manufacturer owned by Samsung Electronics * Harman Technology, the parent company of Ilford Photo * Harmane Harmane (harman) is a heterocyclic amine and β-carboline found in a variety of foods including coffee, sauces, and cooked meat. It is also present in tobacco smoke. Harmane is related to other alkaloids, harmine and harmaline, found in 1837 ... or harman, 1-methyl-9''H''-pyrido ,4-''b''ndole, one of the harmala alkaloids, a rev ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
	Edgar Villchur Edgar Marion Villchur (28 May 1917 – 17 October 2011) was an American inventor, educator, and writer widely known for his 1954 invention of the acoustic suspension loudspeaker which revolutionized the field of high-fidelity equipment. A speaker Villchur developed, the AR-3, is exhibited at The Smithsonian Institution's Information Age Exhibit in Washington, DC. Villchur's speaker systems provided improved bass response while reducing the speaker's cabinet size. Acoustic Research, Inc. (AR), of which he was president from 1954 to 1967, manufactured high-fidelity loudspeakers, turntables, and other stereo components of his design, and demonstrated their quality through "live vs. recorded" concerts. The company's market share grew to 32 percent by 1966. After leaving AR, Villchur researched hearing aid technology, developing the multichannel compression hearing aid, which became the industry standard for hearing aids. Background Villchur received his bachelor's and master ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]