
Sound Pressure Level
... “SPL Graph is an audio level chart recorder for the iPhone… You can optionally record the audio for the graph, and even email graph results at the end of a test” (Studio Six Digital 2013). ...
... “SPL Graph is an audio level chart recorder for the iPhone… You can optionally record the audio for the graph, and even email graph results at the end of a test” (Studio Six Digital 2013). ...
SDA-3000 数据资料DataSheet下载
... Exceeding any one or a combination of the Absolute Maximum Rating conditions may cause permanent damage to the device. Extended application of Absolute Maximum Rating conditions to the device may reduce device reliability. Specified typical performance or functional operation of the device under Abs ...
... Exceeding any one or a combination of the Absolute Maximum Rating conditions may cause permanent damage to the device. Extended application of Absolute Maximum Rating conditions to the device may reduce device reliability. Specified typical performance or functional operation of the device under Abs ...
amplifier models - Precision Power
... available to anyone else nor are they for sale. Our goal is to make sure that your Precision PowerTM product will always sound as good as the day it was purchased. Contact your Authorized Precision PowerTM Dealer about obtaining any warranty service through Precision PowerTM. (See the Warranty on th ...
... available to anyone else nor are they for sale. Our goal is to make sure that your Precision PowerTM product will always sound as good as the day it was purchased. Contact your Authorized Precision PowerTM Dealer about obtaining any warranty service through Precision PowerTM. (See the Warranty on th ...
AND8177/D Audio Circuits Using the NE5532/4
... amplifiers, such as TL083, they show better noise performance, improved output drive capability and considerably higher small--signal and power bandwidths. This makes the devices especially suitable for application in high quality and professional audio equipment, instrumentation and control circuit ...
... amplifiers, such as TL083, they show better noise performance, improved output drive capability and considerably higher small--signal and power bandwidths. This makes the devices especially suitable for application in high quality and professional audio equipment, instrumentation and control circuit ...
Bass 400 Plus
... The Bass 400 Plus uses traditional type tone controls which have been especially tailored for bass, and whose ranges can be extended by use of the “Pull Shift” switches. The Treble control, when set high, becomes the most powerful of the three. At settings of 7 and above it will minimize the effect ...
... The Bass 400 Plus uses traditional type tone controls which have been especially tailored for bass, and whose ranges can be extended by use of the “Pull Shift” switches. The Treble control, when set high, becomes the most powerful of the three. At settings of 7 and above it will minimize the effect ...
Perception of mid frequency and high frequency
... – Even an old fashioned phonograph sounds pretty good once you get used to it! – And many of the monitoring loudspeakers in common use are severely colored. The people who use them say they sound fine. ...
... – Even an old fashioned phonograph sounds pretty good once you get used to it! – And many of the monitoring loudspeakers in common use are severely colored. The people who use them say they sound fine. ...
Perception of mid frequency and high frequency intermodulation
... – Even an old fashioned phonograph sounds pretty good once you get used to it! – And many of the monitoring loudspeakers in common use are severely colored. The people who use them say they sound fine. ...
... – Even an old fashioned phonograph sounds pretty good once you get used to it! – And many of the monitoring loudspeakers in common use are severely colored. The people who use them say they sound fine. ...
Valvet E1r, A3.5 MKII and L2 – review from “hifistatement.net”
... For a number of years now, I begin each listening session with Steely Dan's "Babylon Sisters" from the famous Gaucho album. The first two bars of the track are my personal benchmark for the typical sound of a tom-tom in an earthy-tensioned drum kit. A drummer who strikes the toms precisely in the mi ...
... For a number of years now, I begin each listening session with Steely Dan's "Babylon Sisters" from the famous Gaucho album. The first two bars of the track are my personal benchmark for the typical sound of a tom-tom in an earthy-tensioned drum kit. A drummer who strikes the toms precisely in the mi ...
CAD-280SA V-12R Manual
... The tubes, capacitors and output transformers take approximately 100 hours use to settle in for peak performance. The V-12R will sound good right out of the box but it will improve within a short time. After the first 50-100 hours you will notice increased depth and tighter bass. This break-in perio ...
... The tubes, capacitors and output transformers take approximately 100 hours use to settle in for peak performance. The V-12R will sound good right out of the box but it will improve within a short time. After the first 50-100 hours you will notice increased depth and tighter bass. This break-in perio ...
SpectrAlert® Advance Indoor Selectable Output Speaker Strobes
... The SpectrAlert Advance Series of speakers and speaker strobes is designed to reduce ground faults. The plug-in design allows the installer to pre-wire mounting plates and dress the wires before plugging in the speakers. The plastic cover prevents nicked wires by covering exposed speaker components. ...
... The SpectrAlert Advance Series of speakers and speaker strobes is designed to reduce ground faults. The plug-in design allows the installer to pre-wire mounting plates and dress the wires before plugging in the speakers. The plastic cover prevents nicked wires by covering exposed speaker components. ...
Document
... 4. Fill out the following chart. Enter “lower” if the amplitude of the output of the given circuit will be substantially lower than the input amplitude. Enter “higher” if the amplitude of the output of the given circuit will be substantially higher than the input amplitude. Enter “same” if the ampli ...
... 4. Fill out the following chart. Enter “lower” if the amplitude of the output of the given circuit will be substantially lower than the input amplitude. Enter “higher” if the amplitude of the output of the given circuit will be substantially higher than the input amplitude. Enter “same” if the ampli ...
Lab4_ES3_2007 - Electrical and Computer Engineering
... same function as CC: it blocks unwanted DC voltage from reaching the speaker. Why would we want to block DC voltages? DC voltages do not produce any sound; only time-varying signals produce audible sound. A constant voltage applied to the speaker will dissipate power, however, and this power is simp ...
... same function as CC: it blocks unwanted DC voltage from reaching the speaker. Why would we want to block DC voltages? DC voltages do not produce any sound; only time-varying signals produce audible sound. A constant voltage applied to the speaker will dissipate power, however, and this power is simp ...
Precision_Power_MA4100 Amplifier
... as well as feel the music the way the artist intended. These handcrafted amplifiers feature full differential “front ends” based upon a true instrumentation amplifier topology. Tube Drivers utilize only the highest quality Svetlana tubes in our unique configurations. All of the internal amplifier st ...
... as well as feel the music the way the artist intended. These handcrafted amplifiers feature full differential “front ends” based upon a true instrumentation amplifier topology. Tube Drivers utilize only the highest quality Svetlana tubes in our unique configurations. All of the internal amplifier st ...
FA 3000
... 2. Once the location has been chosen, place the amplifier into position. Use a felt tip pen or a pancil and mark the four holes to be drilled for mounting. NEVER use the amplifier as a template for drilling. It might be damaged! Take the amplifier from the location and drill the four holes. 3. Fix t ...
... 2. Once the location has been chosen, place the amplifier into position. Use a felt tip pen or a pancil and mark the four holes to be drilled for mounting. NEVER use the amplifier as a template for drilling. It might be damaged! Take the amplifier from the location and drill the four holes. 3. Fix t ...
Playing WAV Files with a PSoC Device
... when the molecules shake. The shapes of the individual vibrations also contribute to the sound. Our brains take care of identifying sounds after the eardrum receives them with incredibly fast and fuzzy memory comparisons. By setting up a bionic eardrum (a microphone –basically just a membrane that p ...
... when the molecules shake. The shapes of the individual vibrations also contribute to the sound. Our brains take care of identifying sounds after the eardrum receives them with incredibly fast and fuzzy memory comparisons. By setting up a bionic eardrum (a microphone –basically just a membrane that p ...
MC1000 POWER AMPLIFIER
... 1. If the instrument covered by this contract becomes defective, Mclntosh will provide all parts, materials, and labor needed to return the measured performance of the instrument to the original performance limits free of any charge. The service contract does not cover any shipping costs to and from ...
... 1. If the instrument covered by this contract becomes defective, Mclntosh will provide all parts, materials, and labor needed to return the measured performance of the instrument to the original performance limits free of any charge. The service contract does not cover any shipping costs to and from ...
Transformers Practice #1
... Transformers Practice #2 Some transmission lines carry electricity at 138 kV and 7.25 A. There are transformers to convert the electricity before it reaches residential power lines. The primary coil has 238 loops. The secondary coil voltage is 4.06 kV. a. What type of transformer is this? b. How ma ...
... Transformers Practice #2 Some transmission lines carry electricity at 138 kV and 7.25 A. There are transformers to convert the electricity before it reaches residential power lines. The primary coil has 238 loops. The secondary coil voltage is 4.06 kV. a. What type of transformer is this? b. How ma ...
Owner's Manual & Installation Guide Audiophile Sound Systems
... (AWG5) or larger automotive grade cable which will withstand friction and heat to safe grade against fires occurring as a result of short-circuiting. GND = Connect the proper gauge ground wire to the amplifier "GND" terminal. Locate the position on the chassis of the car to which the amplifier is to ...
... (AWG5) or larger automotive grade cable which will withstand friction and heat to safe grade against fires occurring as a result of short-circuiting. GND = Connect the proper gauge ground wire to the amplifier "GND" terminal. Locate the position on the chassis of the car to which the amplifier is to ...
Digital Amps - Audio Developers
... 2.1 amplifier, 20W/channel; 7 biquads/channel + 2 highres biquads for sub channel ...
... 2.1 amplifier, 20W/channel; 7 biquads/channel + 2 highres biquads for sub channel ...
MXS3000 / MXS3500 English Manual
... Wiring Guide . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...
... Wiring Guide . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...
Frequency response of CE amplifier
... We want to determine the effects of the capacitors CC, CE, Cbc, and of the voltage gain Av on the amplifier’s bandwidth. For each of the following variables we consider as reference value: CC=10nF, CE=100F, Cbe=2,6pF (parasitic capacitance of the transistor), Av=-90 (value which can be determined f ...
... We want to determine the effects of the capacitors CC, CE, Cbc, and of the voltage gain Av on the amplifier’s bandwidth. For each of the following variables we consider as reference value: CC=10nF, CE=100F, Cbe=2,6pF (parasitic capacitance of the transistor), Av=-90 (value which can be determined f ...
RF System Summary
... – Question of 88 MHz test for NF? – Probably release by end of year – Possibly mid-to-late 2005 • depends on funds; people availability • It is likely that the future NF work programme will concentrate on the Target and Horn work, and the bunch rotation test should be completed by the end of 2004 or ...
... – Question of 88 MHz test for NF? – Probably release by end of year – Possibly mid-to-late 2005 • depends on funds; people availability • It is likely that the future NF work programme will concentrate on the Target and Horn work, and the bunch rotation test should be completed by the end of 2004 or ...
A75 Text (wordpad)
... When building a DIY amplifier the chance of hearing it first is more or less zero so it could be regarded as a bit of a gamble. Each pair of mono-block constructed A75's I made cost about UK£1200 in parts and a large time investment so its important to feel that you have a reasonable chance of hitti ...
... When building a DIY amplifier the chance of hearing it first is more or less zero so it could be regarded as a bit of a gamble. Each pair of mono-block constructed A75's I made cost about UK£1200 in parts and a large time investment so its important to feel that you have a reasonable chance of hitti ...
Paper #22 - WordPress.com
... Litz wire are commonly used for windings in transformers and inductors of switch mode power supplies. These are used in this application as if constructed properly they can provide low power loss at high frequencies. At high frequencies, the current will only conduct in the center of a solid conduct ...
... Litz wire are commonly used for windings in transformers and inductors of switch mode power supplies. These are used in this application as if constructed properly they can provide low power loss at high frequencies. At high frequencies, the current will only conduct in the center of a solid conduct ...
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.