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e6450 - Fast Forward sro
e6450 - Fast Forward sro

... the amplifier.This is useful for systems utilizing outboard crossovers or requiring full-range reproduction from one, two or all of the e6450’s channel pairs. “LP” (Low-Pass): Configures the filter to attenuate frequencies above the selected filter frequency at a rate of 12dB per octave.This is usef ...
SP3494 数据资料DataSheet下载
SP3494 数据资料DataSheet下载

... SP481 devices as well as popular industry standards such as the MAX3486 and the 75176. The SP3494 feature Exar's BiCMOS process allowing low power operation without sacrificing performance. The SP3494 has a partially slew rate limited driver with a data transmission rate of 2.5Mbps. ...
MAX3293/MAX3294/MAX3295 20Mbps, +3.3V, SOT23 RS-485/ RS-422 Transmitters General Description
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... devices are enabled using an active-high driver enable (DE) input. When disabled, outputs enter a high-impedance state, and the supply current reduces to 1µA. The MAX3293/MAX3294/MAX3295 have a hot-swap input structure that prevents disturbance on the differential signal lines when a circuit board i ...
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general catalog

... Amplifier M-6000 using power MOS-FETs in the output stage. Benefiting from the outstanding design technology of its predecessor, the P-6100 features instrumentation amplifier topology for fully balanced signal paths, as well as a further refined MCS+ circuit and the current feedback principle to min ...
Presentation 1
Presentation 1

... • As solid-state technology has become more advanced in recent years, devices, such as transistors and ICs, are increasingly available to be used to design inexpensive guitar amplifiers. • However, these analog solid-state designs require much feedback to improve their linear transfer characteristic ...
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TLM 49 - Microphones

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... listed voltage range of the appliances connected to the supply and the voltage may not recover in some types of power supplies. For example, an auxiliary power supply that lacks filtering at its output stage (either via lack of capacitance and/or lack of battery backup across the output) may exhibit ...
SP485R 数据资料DataSheet下载
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Swept Sine Chirps for Measuring Impulse Response
Swept Sine Chirps for Measuring Impulse Response

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... and do not introduce extraneous resistance, which can degrade subwoofer performance. The active filter built into the A1400 can be used to eliminate potentially harmful and/or undesired frequencies from making their way through the amplifier sections to the speaker(s). This serves to improve tonal b ...
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... In order to maintain strict quality assurance standards, all CA Series amplifiers are built in Crest’s state-ofthe-art USA manufacturing facility. Internal components are the finest available, and key sub-assemblies are pre-tested before final assembly. Finally, each amplifier is “burned in” and tho ...
Dynaudio Professional BM12 mkIII manual.indd
Dynaudio Professional BM12 mkIII manual.indd

... Congratulations on your purchase of the Dynaudio Professional BM12 mkIII active monitor system. With the right care and attention it will provide many years of excellent and trouble-free audio reproduction. It is most important, however, that you take a few minutes at this early stage of your monito ...
the super-frs dipole project - Facility for Antiproton and Ion Research
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VU Meters to Loudness Meter
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... available for“visualizing”sound level. Meanwhile, with the transition from analog to digital sound, audio technologies are rapidly evolving. As digital sound offers wider dynamic range in full bit depth than analog sound and easy-to-operate sound processing equipments such as limit controller is ava ...
Nakamichi Car Audio 2011 Amendment1
Nakamichi Car Audio 2011 Amendment1

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data acquistion and signal processing

... But practically it is not possible because resistance change at the input terminals of Opamp. In the circuit of Figure 1, CMRR depends upon both resistor matching and upon the CMRR of the op-amp. This resistance change is undesirable for CMRR. In order to overcome the resistance change due to differ ...
AN-278 Designing with a New Super Fast Dual Norton Amplifier
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pat4319510_fender.pdf
pat4319510_fender.pdf

... cancelled. It is for this reason that the arrangement may in diameter in a conventional manner. be characterized as a humbucking arrangement. In order to derive an output from guitar 10, it is pro- 60 As mentioned previously, while humbucking pickvided with at least one electromagnetic pick-up, gene ...
P84719
P84719

... occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures: 1) Reorient or relo ...
Major BOS 1a
Major BOS 1a

... Please read the operating instructions carefully before installation and setup. The relevant regulations must be complied to when working with 230V line voltage, two-wirelines, four-wire-lines and ISDN-lines. It is also very important to comply to the regulations and safety instructions of working w ...
Analysis of Envelope Signal Injection for Improvement of RF Amplifier Intermodulation Distortion
Analysis of Envelope Signal Injection for Improvement of RF Amplifier Intermodulation Distortion

... III. DISCUSSION OF THEORETICAL RESULTS The theoretical analysis leads to an intuitive understanding of the nonlinear behavior, as well as a strategy for high-linearity high-efficiency RF amplifier design, as will be explained below. and Since the envelope-dependent mixing products will typically hav ...
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M9024 Galvanometer Scanner
M9024 Galvanometer Scanner

... Lasersafety The user has to make shure that the system, where this product is installed, meets the local laser safety regulations. The manufacturer recommends the use of additional safety circuits for monitoring the safety of the system. NOTICE! It should be taken into account, that the scanner mirr ...
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Loudspeaker



A loudspeaker (or loud-speaker or speaker) is an electroacoustic transducer; a device which converts an electrical audio signal into a corresponding sound. The first primitive loudspeakers were invented during the development of telephone systems in the late 1800s, but electronic amplification by vacuum tube beginning around 1912 made loudspeakers truly practical. By the 1920s they were used in radios, phonographs, public address systems and theatre sound systems for talking motion pictures.The most widely-used type of speaker today is the dynamic speaker, invented in 1925 by Edward W. Kellogg and Chester W. Rice. The dynamic speaker operates on the same basic principle as a dynamic microphone, but in reverse, to produce sound from an electrical signal. When an alternating current electrical audio signal input is applied through the voice coil, a coil of wire suspended in a circular gap between the poles of a permanent magnet, the coil is forced to move rapidly back and forth due to Faraday's law of induction, which causes a diaphragm (usually conically shaped) attached to the coil to move back and forth, pushing on the air to create sound waves. Besides this most common method, there are several alternative technologies that can be used to convert an electrical signal into sound. The sound source (e.g., a sound recording or a microphone) must be amplified with an amplifier before the signal is sent to the speaker.Speakers are typically housed in an enclosure which is often a rectangular or square box made of wood or sometimes plastic. Where high fidelity reproduction of sound is required, multiple loudspeakers may be mounted in the same enclosure, each reproducing a part of the audible frequency range (picture at right). In this case the individual speakers are referred to as ""drivers"" and the entire unit is called a loudspeaker. Miniature loudspeakers are found in devices such as radio and TV receivers, and many forms of music players. Larger loudspeaker systems are used for music, sound reinforcement in theatres and concerts, and in public address systems.
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