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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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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 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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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
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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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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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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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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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
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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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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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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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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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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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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Impedance Analyzers
MTZ-35.
An impedance analyzer with the features and specifications necessary for working on a the broad range of applications in the field of materials research.
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Impedance Measurement
CITS880s
Finer geometries and thinner copper can present a challenge for fabricators measuring impedance on leading edge PCBs. The CITS880s answers that challenge with the introduction of Launch Point Extrapolation (LPE). LPE extrapolates the TDR response back to a point close to the start of the transmission line effectively allowing to users more accurately to measure the instantaneous or incident impedance of the line.
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Impedance Analyzers
The E4990A Impedance Analyzer with a frequency range of 20 Hz to 120 MHz provides an industry best 0.045% (typ.) basic accuracy over a wide impedance range, with a 40 V built-in DC bias source.
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Impedance meters
Electronic components meters for circuit verification in laboratories, technical schools and technical support centres.
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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 Analyzers
1MHz to 300MHz Measurement Frequency Impedance Analyzer with 0.5ms Test Speed and Superior Repeatability
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Impedance Meter
ZM-100
Monacor International GmbH & Co. KG
Impedance meter for measuring the impedance (Z) of individual loudspeakers and loudspeaker lines.
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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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Controlled Impedance Analyzers
HYPERLABS Controlled Impedance Analyzers can be used with various probes and adapters to quickly and reliably characterize impedance on PCB test coupons. These Test Systems are designed to comply with IPC-2141A standards for PCB coupon testing, and can be customized to meet specific customer needs.
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Impedance Analyzer 1MHz-20Hz
IA1000
Frequency range20 ~ 1MHzFrequency accuracy0.005%Frequency resolution0.001% in all frequency rangeTest signal level0.05 ~ 2.0 VrmsTest signal resolution0.001 VrmsTest signal output impedance100ΩImpedance Z range; basic accuracy0.0000Ω ~ 99.99
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Loop/Line Impedance Testers
Shanghai Beha Electronics Co., Ltd.
*Built-in earth tester.*Built-in loop/psc tester. 0.03 - 2000Ω (software ctrl).*Built-in voltmeter.*Built-in wiring checker.*One push button smart control.
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Impedance Analyzers
HTF-1100.
A laboratory furnace used specifically for the electrical characterization of materials and also for heat treatment between ambient temperature and 1100 °C.
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Precision Impedance Analyzer (10Hz to 130MHz)
ST2851
ST2851 series precision impedance analyzer is a new generation impedance test instrument by adopting the current international advanced automatic balance bridge principle. It is based on Windows10 operating system, which realizes a fully computerized operation interface, making the measurement more intelligent and easier.ST2851 series impedance analyzer surpasses the 120MHz frequency bottleneck of similar foreign instruments, and solves the defect that it can only be analyzed but cannot be tested independently. At the same time, it adopts two interfaces of single test and analysis to make the test easier.
