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Speaker Impedance
measure of resistance a speaker puts on an amplifier.
See Also: Speaker, Microspeaker, Loudspeaker, SPL
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Pathfinder Locating System
The STICK™
Built with Pathfinder SAF Technology™ at its core, the Stick offers RYCOM’s most ophisticated technology in an economical package. Pathfinder SAF Technology™ is the heart of our premium locators, now RYCOM is applying this proven technology throughout the entire product line. From crowded easements, to long runs of pipe, to the most demanding of locating environments, users can depend on The Stick. Dependability is not only driven by the internal technology, but The Stick is built to last with an aluminum housing and sealed against weather. The ruggedly designed and well balanced receiver includes an LCD screen providing relative and actual signal strength, as well as a speaker for variable audio pitch. A peaking signal response allows the user to minimize interference and maintain the locate on the target conductor. The Stick cable and pipe locator offers multiple active frequencies — from 50Hz to 82kHz — ensuring flexibility to match the needs of the most complicated locating environments. Transmitter functions include transmitter induction, coupler induction and direct connection. Whether the locate is measured in feet or miles, with automatic impedance matching from 5 ohm to 25,000 ohms and 3 watts of output power, The Stick will meet the challenge. Rycom Instruments®, Inc. locators are designed and manufactured to make utility locating as accurate as you need and as simple as you want.
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Audio Impedance Testers
1506 IM
Standard Electric Works Co., Ltd
● High quality Taut Band movement.● Battery operated.● Timer function for hands free use.● Battery indicator.● The tester measure with a frequency of 1kHz.● Measure speaker’s impedance.● Measure speaker lines (connected to load).● Help to calculate and check audio power systems.● Ideal for public address installation and maintenance.● Measure transformer impedances.
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Known impedance for use in loudspeaker measurements
Impedance Box
An impedance box is necessary for measuring the impedance of a loudspeaker. Listen Inc.’s impedance box contains a 0.25Ω resistance. This value is suitable for most loudspeakers, but may be easily swapped out for a different value by the user if speakers with a particularly high or low impedance are being tested. It is available with either XLR or 1/4″ balanced connectors. Please specify type of connectors when ordering.
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Audio Multimeter
AMM-1
The purpose of this tool is to enable the user to: Measure True Amplifier Power output into any load reactive or resistive Measure Common DC voltages Measure DC voltage drops during quick transients on cable runs or battery / charging systems Measure Impedance of speakers at any power or frequency from 20Hz - 1kHz (box rise) Measure Phase Difference between Voltage and Current into reactive loads (Power Factor) Find Tuning Frequency of subwoofer enclosures Tune subwoofer enclosures for maximum power transfer Measure AC Volts (amplifier output) Measure AC Amps (amplifier output)
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Amplifier, Switch and Test Box
CLIOQC Model V
The QCBOX Model 5 is a non-conventional unit designed to fulfil actual and future needs of an electro-acoustical analyzer like the CLIO system. It is USB linked to a PC and can be configured, with dedicated software controls, to assist frequency response and impedance measurements or to perform DC measurements. Using it for frequency response measurements acts as 50W power amplifier to drive the speaker or network under test while routing one-of-four inputs to the analyzer as well the current sensing output. The four inputs are able to provide a phantom power supply both for Audiomatica or general purpose microphones (0-24 V range, software controlled). Impedance measurements can be done either switching the D.U.T.’s load across the analyzer’s input or using a dedicated output, ISENSE, thus allowing impedance measurements in constant voltage mode as well voice coil current distortion analysis. An internal ADC measures the DC current into the voice coil. Thanks to an internal software controlled voltage generator the speaker can be driven with a superimposed DC voltage (±20V), allowing for measurements of large signal parameters. Two ADC converters with a ±2.5 V and ±5 V are available at inputs 3 and 4 to measure the displacement with a laser sensor or any other DC signal. A dedicated digital input handles an external foot pedal switch (or TTL signal) to be connected and triggers QC operations. A 6 bit output – 5 bit input TTL digital port is available to interface the QCBOX and driving software with external hardware (like turntables for example).The QCBOX Model 5 finds use both in laboratory for R&D applications and in production lines setups.
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Speaker Component Checker
Cab Driver
Whirlwind Music Distributors, Inc.
The CAB DRIVER is a test device for checking the operation of the speaker components within enclosures. A pink noise signal source is sent through pushbutton selectors to an assortment of speaker connectors, including Speakon NL8 and NL4, 1/4" TS and banana jacks. Speaker/ Polarity/ Impedance/ Pink Noise Generator
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Analog & Digital Audio Analyzer
FX100
The FX100 is a unique professional audio analyzer that adapts to your application. The instrument offers comprehensive measurements including Passed/Failed tests in under 1 second. You may customize the system for two or four parallel channel operation, speaker impedance testing and digital audio measurements. Switcher modules provide additional outputs and inputs.
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Audio Analyzer
FLEXUS FX100
The FX100 is a unique professional audio analyzer that adapts to your application. The instrument offers comprehensive measurements including Passed/Failed tests in under 1 second. You may customize the system for two or four parallel channel operation, speaker impedance testing and digital audio measurements. Switcher modules provide additional outputs and inputs.
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True Dual-Channel Analysis on iOS
IOScope
With IOScope, measure loudspeaker impedance, frequency response, and sensitivity. Measure a room impulse response. Tune a large sound reinforcement system, time-align a set of surround sound speakers, or optimize your home stereo. Determine the actual cutoff frequencies of your latest speaker crossover circuit, or teach your students the fundamentals of Fourier analysis of dynamic systems.
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Impedance Meter, Audio, 200Ω, 2KΩ and 20KΩ scales
72-6948
Active device is essential for reliable installation of background music and paging systems in residences, offices buildings and public areas. Avoid costly service calls and amplifier damage by verifying actual speaker system impedance prior to operation. Unlike conventional volt/ohm meters, which measure DC resistance, this unit utilizes an internal 1KHz oscillator to measure true impedance. Accurately measure speaker lines that utilize impedance matching volume controls, switchers, transformers and passive crossovers. Because this unit accurately measures up to 20Kohm, it may also be utilized with 25V, 50V, 70V, and 100V speaker line transformers in commercial installations.
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Audio Impedance Testers
2706 IM
Standard Electric Works Co., Ltd
● True measurement of speaker systems actual impedance at 1kHz.● Three test ranges (20Ω / 200Ω / 2000Ω) allow testing of home theater and commercial sound systems.● Measures transformer impedances.● Battery operated.● Low battery indication.● Data hold function.● Timer function for continuous hands free operation.● The timer can last about 3-5 minutes when users press.● TEST ON/OFF button.
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Audio Impedance Testers
1106 IM
Standard Electric Works Co., Ltd
Large LCD : 68 × 34mm (2.677" × 1.338"). True measurement of speaker systems actural impedance at 1kHz. Three test ranges allow testing of home theater and commercial sound systems. Measures transformer impedances. Battery operation. Low battery indication. Data hold function. 0Ω adjustment.
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Audio Impedance Testers
1107 IM
Standard Electric Works Co., Ltd
● Large LCD : 68 × 34mm(2.677" × 1.338").● True measurement of speaker systems actural impedance at 1kHz.● Three test ranges allow testing of home theater and commercial sound systems.● Measures transformer impedances.● Battery operation.● Low battery indication.● Data hold function.● 0Ω adjustment.
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Speakers
Selection of ceiling mount, surface mount, and pendant speakers designed to meet a wide variety of needs.
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Speaker & Signal Analyzer
Specifications*frequency available for models:1-300/450/600MHz *frequency sweep mode:full sweep, narrow sweep,spot frequnecy
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Speaker Consulting
From 1993 Peter Larsen has worked as an independent consultant for leading loudspeaker factories all over the world. During his career the Ringradiator, a new Racetrack woofer and a 15mm Mobile receiver have been developed among several hundred other transducers. Complete High End enclosure systems and Monitors are among the latest additions.
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Impedance meters
Electronic components meters for circuit verification in laboratories, technical schools and technical support centres.
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Impedance Analyzer
MFIA
The Zurich Instruments MFIA is a digital impedance analyzer and precision LCR meter that sets the new standard for impedance measurements in the frequency range from DC to 5 MHz. The MFIA provides 0.05% basic accuracy and a measurement range spanning from 1 m to 10 G. The instrument has a high measurement repeatability and a small temperature drift. With the LabOne user interface the MFIA offers a number of long-awaited innovations for the impedance and LCR measurement available without the need of any software installation.
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Impedance Spectroscopy
NuVant EZware-EIS Software Package
The NuVant EZware-EIS software package activates Electrochemical Impedance Spectroscopy on the EZstat-Pro, Powerstat-05 and -20 potentiostat/galvanostats. EZware-EIS exports the impedance data to a file format to accommodate free third party EIS analysis software. EZware-EIS is a user-friendly interface that allows selection of the proper scanning parameters, collect the impedance spectra, display data in Nyquist and/or Bode plots and export data in the proper data format for use in EIS analysis software.
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Impedance Stabilization Network
Beijing KeHuan Century EMC Technology Co,.LTD
KH8158 is a device for measuring the common mode interference voltage of unshielded twisted pair cables. Cable testing according to CISPR 16-1-2. The equipment under test (EuT) and auxiliary equipment (AE) are directly connected to the corresponding ports. The port adopts RJ-45 socket (the distribution conforms to T568A/B.) This equipment is divided into three specifications: CAT3, CAT5, and CAT6, and the corresponding equipment is selected according to the cable model.
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High Impedance Transformers
Osborne high impedance transformers are used to step-up, step-down and isolate voltages in single phase and three phase circuits. A properly designed high impedance transformer can be used an an equivalent to an isolation transformer connected in series with an inductor. The high impedance characteristic may be employed as a current limiting feature in both the primary and secondary circuity.
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High Impedance Active Probes
28 AND 29
Designed to serve the needs of integrated circuit engineers working in the most advanced high speed, submicron, MOS technology. These high frequency instruments include the attractive features of the Models 18C and 19 including full dc capability, negligible dc current drain, and extremely low input capacitance. In addition the frequency range of the Models 28 and 29 has been extended to a full 1 GHz.
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Localized Electrochemical Impedance Spectroscopy
VS-LEIS
The VersaSTAT 3F applies an AC voltage to the sample emerged in electrolyte. This "global" voltage generates AC current to flow at the electrode / electrolyte interface. A dual-element probe is positioned in solution close to the surface of the sample. The electrometer measures a differential voltage measure between the two measurement elements as a measure of local voltage-drop in solution. This voltage-drop exists in solution because of current flow from local reactions at the sample, the resistance of the electrolyte and the spatial separation of the dual measurement elements.
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Low Impedance Voltage Tester
K-60
K-60 KNOPP VOLTAGE TESTER for AC and DC with polarity indicator. Double safety indication is by solenoid and by neon lamp. Knopp’s K-60 Low Impedance Voltage Tester (Cat. 14460) offers portability and ease of use with full protection. These exceptionally versatile and useful tools are backed by a reputation for quality in the design and manufacturing of electrical test equipment.
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Speaker Test
Determines speaker polarity by analyzing a proprietary signal. See our new demo video of this module. Measures woofers, midrange, and tweeter drivers.
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High Impedance Active Probes
35
The Picoprobe Model 35 has been engineered to meet the stringent demands of advanced high frequency circuit designers.
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Precision Impedance Analyzers
6500B Series
Accurate high frequency measurements combined with an easy to use graphical interface and high resolution colour display.
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Impedance Standards and Calibrators
Impedance Calibrator is to replace countless single value RCL standards with one calibrator that can switch between the standards like a CD changer in your car. The calibrator contains stable and temperature independent resistance standards, partial capacitance standards and partial inductance standards, simulated by RC T-type passive network. Calibration values of both complex parameters of partial standards are displayed on large LCD screen in preselected pairs of parameters as well as voltage, current and frequency readouts from built-in test signal meter. OPEN and SHORT reference positions are available as well.
