Best Cordless Hand Vacuum For Pet Hair in 2021
BISSELL Pet Hair Eraser Lithium Ion Cordless Hand Vacuum, Purple
- Buy BISSELL, save pets; BISSELL will donate 5 dollars for each pet hair eraser Li Ion purchase, upon activation
- Remove more embedded dirt and pet hair with a motorized brush tool and lithium ion battery
- 14V lithium ion battery for lithium powered cleaning; Dirt Cup Capacity: 0.7 Litres
- Large, easy to empty dirt bin to help get rid of pet hair easily. Triple level filtration to help improve cleaning performance
- Set of specialized pet tools includes: motorized brush tool, upholstery tool, and crevice tool
Shark Cordless Pet Perfect Lithium-Ion (LV801) Handheld Vacuum, Black
- A powerful cordless handheld vacuum with a lithium-ion battery, convenient for all cleaning surfaces
- Twister suction technology, giving it strong suction power
- Detachable motorized pet brush removes pet hair and ground-in dirt from upholstery, carpets, car mats, seats, and more
- The crevice tool is used for hard-to-reach areas, a motorized brush for embedded messes, and a direct suction option for easy cleaning on any surface
- Lightweight and portable, it's the perfect vacuum for your home, boat, RV, or car.The dust cup holds 0.43 dry quarts up to the Max Fill line
Bissell, 1782 Pet Hair Eraser Cordless Hand and Car Vacuum
- BISSELL Pet Hair Eraser hand vacuum is cordless, to clean wherever your pet goes
- Motorized foot provides powerful suction for a deeper clean. Power Rating : 14.4 Volts
- Crevice tool helps clean hard-to-reach areas and tight spaces. Telescoping Extension Wand
- Upholstery tool cleans soft surfaces and furniture with felt by attracting more pet hair; Easy-to-Empty dirt bin to help get rid of pet hair easily
- Dual-action filtration system; Includes one-year limited warranty; Dirt Cup Capacity: 0.7 L
Handheld Vacuum,7000PA Powerful Cyclonic Suction Mini Handheld Vacuum Cordless Cleaner, Wet & Dry Portable Lightweight Handheld Vacuum for Home pet and Car Cleaning,Gold
- ⛄【Powerful Suction】Hikeren cordless handheld vacuum with updated stainless filter, which better to protection the battery and motor. High 100W performance motor provides a strong cyclonic suction, good for daily quick pick ups.
- 🎄【Support All-round Dry & Wet Cleaning】Vacuum cleaner includes 3 kinds of accessories. Depending on the application, you can easily clean all narrow areas, such as window frames, corners, between furniture and walls, and general automotive interiors. Suitable for cleaning cars, milk, liquids, pet hair, cat litter, dust, etc.
- 🎅【Cordless, Light Weight & Portable】Cord-free, hassle-free! The cordless vacuum dust cleaner is lightweight and portable to use. Free your movement and easy to clean stairs, kitchen, inside of your car, hard to reach corners, wall edges without bulky and tangled cords. Hikeren cordless handheld vacuum HAS PASSED CE, ROHS, MSDS and UL CERTIFICATION.
- 🌈【Fast charging, multiple protection】Long Lasting Battery - The battery vacuum cleaner takes 3~4 hours to fully charge,can work to 30 minutes (It can completely clean your entire room or car on a full charge). In addition, with the anti-backflow valve, there is no need to worry about dust falling off during the cleaning process.
- 🎁【After service】Any Inquiries will be answered within 24 hours.Please contact us,thank you！
Hikeren Handheld Vacuum, Hand Vacuum Cordless 7Kpa Strong Suction Powered by Li-ion Battery Rechargeable Quick Charge Tech, Mini Vacuum for Home and Car Cleaning, Black& Orange
- ★ 【7000PA POWERFUL SUCTION HAND VAC】: Hikeren handheld vacuum cleaner utilizes a 100W ultra-high power motor of 7kPA suction provides efficient vacuuming ability to clean dust, crumbs, cat litter, pet hair and also those hard to reach unseen motes which hidden deeply in sofas corner, unexpected vacuum liquids(spilled milk or water on the table）effortlessly, but no more than 2/3 dust container. Hikeren aims to supply an all-around protection for your family.
- ★ 【CORDLESS DESIGN】: Cord-free! Hassle-free! This handheld vacuum free your movement for cleaning your stairs, kitchen, car or hard-to-reach corners without bulky and tangled cords. And this mini hand vacuum with the cordless design is also lightweight and portable enough to help you clean everywhere easily.
- ★ 【LONG BATTERY LIFE & QUICK CHARGE】: Hikeren handheld vacuum rechargeable Adopted the latest generation Li-ion battery with running time up to 30 minutes, can fully charge its battery in 3-4 hours. Meantime, The high-efficiency lithium battery adopted in Hikeren vacuum cleaner can cycle up to 500 times with its lifetime up to 5 years, which is 3 times than that of other brands. In addition to the temperature protection, input voltage protection, input current protection, and short circuit pro
- ★ 【ALL-AROUND CLEANING】: The cordless Vacuum comes with 3 three different serviceable attachments to save your time and assemble the cleaning performance: the brush tool is suitable for pet hair, carpets, picture frames, lampshades, and keyboards. the rubber nozzle can handle liquid well, and the crevice attachment is perfect mess where hard to reach. One cleaner, meet your all satisfactions of home and car cleaning.
- ★ 【AFTER-SALE SERVICE】: Great gift for either your friend or self use. Any inquiry about HIKEREN Cordless and rechargeable handheld Vacuum Cleaner, please don't hesitate to email us:[email protected] first! We will give you a response within 24 hours to win your satisfaction!
Bissell Pet Hair Eraser Handheld Vacuum, Corded, 33A1
- Surface Type: upholstery, auto, stairs, Power Rating: 4 amperes
- Filtration: multi layer filtration, The Bissell hand vac uses the Cyclonic Cleaning System
- 16 feet Power cord. Cleans stairs, upholstery and hard surfaces. Dirt Cup Capacity:0.78 L
- Specialized rubber Nozzle attracts hair and pulls out dirt on areas such as stairs and upholstery
- Includes two specially designed Nozzles
- Included Components: Bissell - Pet Hair Eraser Bagless Hand Vac - Black Pearl
- Power Source Type: Corded Electric
Shark Pet-Perfect II Cordless Bagless Hand Vacuum for Carpet and Hard Floor with Twister Technology and Rechargeable Battery (SV780), Lavender
- Dust cup capacity - 0.56 quarts. The most powerful 18 volt cordless hand vacuum available
- Deep cleaning thanks to an extra-large detachable motorized brush for quick and easy cleanups of pet hair and ground-in dirt
- Light weight - making it perfect for your home, car, boat, or RV
- The versatility of a crevice tool, motorized brush, dusting brush and direct suction option - for easy cleaning on any surface
- An easily detachable and washable filter
Rechargeable Pet Hair Vacuum Cleaners for Home and Car, Portable Cordless Vacuum Cleaner Strong Suction Handheld and Household Auto Vacuum Cleaner for Deep Cleaningï¼ŒWet & Dry (Updated)
- 🚙🏡【Strong suction, Deep cleaning 】 Cinlinso Cordless Handheld Vacuum Cleaners utilizes a 120W ultra-high power motor with suction up to 5Kpa. In addition to sucking out daily pet hair , paper debris ,crumbs, hair, dust, liquid, litter and all those other little items, It can also clear those hard-to-reach unseen motes, as small as 0. 3 microns, Hidden deeply in sofas and mattresses. Cinlinso Vacuum aims to provide an all-around protection for your family.
- 🚙🏡【 Wet and Dry Vacuum Cleaner】Get rid of cleaning liquid with hand cloth. This product is very easy to suck up spilled liquid. It is equipped with 3 other useful accessories for other purposes, such as the use of gap tools, easy to clean hard to reach places, such as wall joints, stair joints, car joints. Solve the problem of cleaning dead corner.
- 🚙🏡【Cordless Portable】This product can be used 30 times with only one flush of electricity.Cordless Handheld Vacuum Cleaners free your movement and easy to clean stairs, kitchen, inside of your car, hard to reach corners, wall edges without bulky and tangled cords. Cord-free, hassle-free!
- 🚙🏡【LIGHT WEIGHT】 Ergonomic design with 1.5lb body, lightweight enough even for a long time used.10000+ housewife recommend ,Designed for quick + easy cordless cleaning.
- 🚙🏡【Professional Vacuum】 Cinlinso cordless handheld vacuum HAS PASSED CE, ROHS, MSDS and UL CERTIFICATION.If you have any questions, please contact us first, we are ready to answer for you. Don't hesitate, this is the cordless handheld vacuum cleaners you've been looking for！
Holife Handheld Cleaner Cordless, 7kpa Portable Hand Vacuum with Replaceable Battery and Stainless Steel Filter Quick Charge Tech for Pet, Hair, Home, Office, Car Cleaning, Middle, Grey
- Enhanced Extended Life SOFT STATER. Equipped with a soft starter switch that improves the reliability of the power supply, reduces wear on the motor and extends the life of the vacuum cleaner by protecting it against electrical overload, compared to the conventional switch. Press the switch for two seconds to turn on the hand vacuum cleaner.
- POWERFUL SUCTION FOR DEEP CLEANING. HOLIFE portable handheld vacuum with 90W turbine motor & dual filtration system provides over 7KPa strong suction. Easily suck up objects with weight of 750g/1. 6lb (4 Pcs of Cellphone), but also as tiny as dust, let alone vacuum dirt, pet hair, seed shells, crumb, sand and other debris. Hand held vacuum cleaner also captures invisible dirt that deeply hidden in the sofa or carpet, helping to keep your home or car clean for a healthy environment.
- .Smart DUAL PROTECTION MOTOR & BATTERY System. Upgraded smart motor and battery system better and safer experience. When the hand hand vacuum cleaner overheats due to abnormal use, it will auto shut off until the temperature returns to normal value, preventing motor burning out. After fully charged, the handheld vacuum will auto stop charging to protect overcharging. Detachable battery allows you to replace the battery rather than buy a new hand vacuum when battery is damaged.
- Unique Detachable Battery Technology & Long-Lasting Battery. Detachable battery technology allows you to replace the battery simply by yourself, doubling its running time and prolonging its service life; a single charge provides up to 25 minutes of cleaning with no battery recession. In addition, with fast charging technology, it can be fully charged in 3-4 hours.
- DURABLE STAINLESS-STEEL FILTER & EASY TO WASH. Thanks to a stainless-steel filter, you can relieve yourself from frequently replacing the filter. it is 50 times that of a paper filter, the stainless steel one can be rewashed and reused over 500 times, which also greatly saves your money.
Holife Powerful Handheld Vacuum Cordless Cleaner Rechargeable, 30mins Portable Suction Hand Vacuum with Diploid Filtration, Lightweight Wet Dry 14.8V Lithium Hand Vac for Home Pet Hair Car Cleaning
- Powerful Strong Suction & Advanced Motor - Featuring Max 100W advanced ultra-high power motor, the handheld Vacuum cleaner provides stable Powerful strong suction. It easily absorbs hair, pet hairs, paper scraps, hard-to-reach unseen dust motes, and other spilled 100ml liquids. And it also can absorb stink bugs hide in the window, floor, door, etc.
- Long Battery Life & Quick Charge Tech - Holife hand vacuum adopted 4x2200mAh Large Capacity and no memory effect Li-ion battery can run constantly for 30mins. With a high-efficiency charging base and quick charge tech, it only needs to charge about 2~3 hours. The high airflow system efficiently separates the dust.
- 3-in-1 Versatility & Dry Wet Cleaning - With wet & dry cleaning design, you can even clean the wet surface. The crevice tool for cleaning any surface, including sofas, walls, stairs, and other hard-to-reach areas; The Brush nozzle for easily picking up hair or dirt on delicate surfaces & upholstery; The Liquid nozzle for cleaning unexpected 100ml of liquid spills effortlessly.
- Diploid High-Efficiency Filtration & Protection - With high speed rotating airflow and non-woven fabrics filter, It can filter out the finer particles as small as 0 3 microns more efficiently. Meantime, the temperature protection, input voltage protection, and input current protection better ensure equipment throughout the charging process.
- Lightweight Design & Easy to clean - With ergonomically designed handle for easy grip, the wireless operation gives you 100% liquidity. 3.4 LB Lightweight body to ensure the most comfortable use. Besides, it can easy to tear down and clean 600ml dust cup and filter.
Audew Cordless Handheld Vacuum, Upgraded Hand Vacuum Cordless Rechargeable Pet Hair Vacuum, Car Vacuum Cleaner for Home and Car Cleaning
- 💖【Powerful Suction and Long Time Use】Audew handheld vacuums is built-in cyclone technology which provides a continuous powerful suction.It is efficient in cleaning not only dust, paper scraps but also small stones and liquids.A fully charged Audew vacuum could work constantly for 25-30 minutes.Powerful and long time use ensure a great cleaning experience.
- 💖【Quick Charge Tech. and Charging Protection】With 2200mAh lithium-ion battery and quick charge tech,Audew handheld vacuum cleaner could work constantly for 25-30 minutes after fully charged for 3-5 hours.Our charging system also provides over-voltage protection,over-current protection and over-temperature protection to make sure it is safe.
- 💖【Widely Applicable and Complete Accessories】Audew handheld vacuum cordless comes with 3 kinds of attachments: containing a crevice nozzle for narrow gaps,corners and liquids, a brush nozzle for carpet & hair and a soft long tube for dust particles flexibly.No matter in home,office or car,you will always find it easy to clean up with our vacuum.
- 💖【Durable Filter and Easy to Clean】The filter of Audew vacuum hoover is made of stainless steel and sponge which is washable and reusable.You could easy to press the release button when the dust bin is full.Take off the HEPA filter and clean it with the brush or wash it with water after that.Attention: please remember to dry it up before put it back into the vacuum.
- 💖【Intimate After-sales Service】Audew car vacuum cleaner offers a 12-month 100% free manufacturer repair and a 45-day refund without human damage.You could contact with us by e-mail if there are any further problems.We will always be with you and offer you satisfying response.Thank you for your understanding and support.
Handheld Vacuum, LOZAYI 7KPA Cordless Vacuum Cleaner Rechargeable Hand Vac, LED Light 100W Stronger Cyclonic Suction Lightweight Wet/Dry Handheld Vacuum Cleaner for Home Pet Hair Car Cleaning-Orange
- 👍【HOUSEHOLD CLEANING GOOD HELPER】:LOZAYI handheld vacuum with 304 stainless steel filter, 100W ultra-high power motor 🌀 provides a stable 7KPA strong cyclonic suction，sucking out daily pet hair and paper debris，even unseen trash that hidden deeply in sofas, good for daily cleaning from car to home.🚔 →💒 A special design is equipped with LED light, Let you clean the dark corners and no longer worry.
- 🔋【LONGER RUNNING TIME】:Cordless vacuum cleaner adopted 3x2600mAh high capacity lithium-ion batteries delivers up to 30 minutes of continuous running time after 3-4 hours full charge,under 75 decibels super low noise level from solid to liquid, fully meet the deep cleaning needs from your kitchen, living room to bedroom etc,which is really rare in today’s market.(Please do not use when charging)
- 💎【4-in-1 DRY&WET】:The handheld vacuum cleaner comes with 4 serviceable attachments for added versatility(with a pet brush 🐶🐶🐶):Crevice tool for reaching debris in tight corners & spaces with ease; Dusting brush for easily picking up hair or dirt on delicate surfaces & upholstery; Liquid nozzle for cleaning unexpected liquid spills effortlessly. It's really a good helper for us to do housework. If you love your wife, please give her a surprise.
- ✅【MULTIPLE PROTECTIONS&EASY To WASH】:Hand vacuum with temperature protection, input voltage protection, input current protection, and short circuit protection better ensure equipment safety throughout the charging process. what's more portable vacuum has a removable and washable stainless steel filter, it is 20 times that of a paper filter,Clean and dry the filter after each use to enhance the powerful suction for the next use.
- 📩【PERFECT CUSTOMER SERVICE】:LOZAYI handheld Vacuum has PASSED CE, FC and UL CERTIFICATION.We allow a full refund or a replacement & super customer service AT ANY TIME.If you have any questions, please do not hesitate to CONTACT US!
BLACK+DECKER Pet dustbuster Handheld Vacuum, Cordless, Purple (HLVA325JP07)
- Motorized pet head with rubber tines helps to power through pet hair
- Lithium technology for strong suction and long battery Life
- Pull out crevice tool for hard to reach areas
- Push in brush for dusting and cleaning upholstery
- Charging indicator light notifys you when vacuum is charging and/or fully charged. Does not include Wall Mount Charger
BISSELL Bolt Pet Cordless Handheld Vacuum Cleaner, 2133
- Buy BISSELL, save pets. BISSELL will donate $5 to BISSELL Pet Foundation for each Bot Pet Hand Vac purchase upon activation.
- Make pet cleanup easy with powerful, cordless suction and tools designed for pet parents
- Provides powerful, long-lasting suction for up to 25 minutes with lithium Ion technology
- Extra-large dirt bin holds more debris for less time spent emptying
- Clean turn filtration helps release debris and dirt when emptying
- Battery-power light indicates battery level and charging progress
BLACK+DECKER Pet dusbuster Handheld Vacuum, Cordless, White (HLVB315JP07)
- Motorized Pet Head with rubber tines helps to power through pet hair
- 2X More Suction Power vs our leading Hand vacuum Claim
- Washable Bowl and Filter for Thorough Cleaning
- Clear Bagless Dirt Bowl is easy to see dirt and easy to empty
- Charging Indicator light notifies you when vacuum is charging and/or fully charged
Handheld Vacuum Cleaner Cordless 7kpa Powerful Suction Mini Car Vacuum Cleaner with Stainless Steel HEPA Filter,LED Light,Rechargeable Wet Dry Hand Vac for Home Pet Hair Car Cleaning
- 🌀【Strong suction & LED Light 】Enovi Household cordless vacuum cleaner utilizes a 120W ultra-high power motor with suction up to 7Kpa,which helps you easily solve various problems in rooms, cars, sofas and carpets. More powerfully, it is equipped with LED lights. Let you clean the dark corners in an instant.
- 🌀【3-in-1】Enovi vacuum cleaner with 3 serviceable attachments for added versatility：the extension hose can connect with brush to clean hard-to-reach area, the crevice nozzle can get rid of the trash in tight spaces; and the brush nozzle is for human&pet hair.
- 🌀【Quick Charging & Super Long Cleaning Time】Enovi Hand vacuum cleaner has PASSED CE, ROHS, MSDS and UL CERTIFICATION. Powered by Lithium battery, it only takes 2-3h to be fully charged, quicker recharge, no memory effect and contains multiple protections to guarantee equipment safety.Can last 30mins above,enough for every home and car cleaning.
- 🌀【Light weight design & Durable Filter】Enovi handheld vacuum is less than 1.5lbs, lightweight design greatly eases your cleaning task.The washable and reusable stainless steel HEPA filter equal to 20 times of normal filter. Never need to buy a replacement filter! It also protects the motor and enhances suction.
- 🌀【Cordless】Cord-free, hassle-free! Free your movement and easy to clean stairs, kitchen, inside of your vehicles, hard to reach corners, wall edges without bulky and tangled cords.
BLACK+DECKER dustbuster Handheld Vacuum, Cordless, AdvancedClean+, Gray (HHVK515JP07)
- Cleans Hair, Dirt & Debris From High Traffic Areas
- Cleans unwanted messes from on top of, around and under furniture
- Vacuums Hair & Debris from Carpeted Stairs
- Anti- tangle rubber bristles motorized to lift stubborn pet hair
- Extra long crevice tool - clean hard to reach areas with less effort
- Washable filter and pre-filter for easy cleaning and maintenance
- ONE-TOUCH easy empty- Empty without touching the dirt
- 2 Speeds - Powerboost mode for more power at touch of a button
- XL Dustbin - Pick up more, empty less. Charger - Jack Plug
- Battery indicator - Know how much battery is left to complete the task
SCIJOY Handheld Vacuum Cordless 8KPa Powerful Suction Two Speeds 40min-Running Lightweight Portable Hand Vacuum Cleaner with Double Filtration & Quick Charge for Home Car Pet Hair Cleaning
- 【8000PA Powerful Cyclonic Suction & Two Speeds Modes】SCIJOY Handheld Vacuum supporting 600hrs long-lasting endurance, reducing friction while running to provide powerful suction up to 8000PA, easily clean dust, crumbs, cat litter, pet hairs on carpet, hard floor and car. 2 Speeds Power boost mode for more power at touch of a button. ▲Tips: Not suitable for absorbing liquids!
- 【Multiple Filtration System】Inside adopts high-efficiency HEPA filter which captures 99.99% of fine particles as small as 0.1um; Outside adopts stainless steel filter cover to separate meticulous dust. Filter is washable.
- 【40 Minutes Cordless Running Time & 3-4 hours Fast Charge】Contains 5 large capacity 2200mAh lithium-ion batteries, longer running time than ordinary handheld vacuum cleaners, 40 Minutes in 4Kpa mode, 20 Minutes in 7Kpa mode. Temperature, input voltage, input current, and short circuit protection ensure better device safety throughout the charging process.
- 【All-Around Cleaning & 700ml Dust Cup】Handheld Vac comes with 2 accessories: The Crevice Tool for cleaning any surface, including sofas, wall edges, stairs, windowsills, and other hard-to-reach areas; The Brush Nozzle for easily picking up pet hair or dirt on upholstery, carpets, car seat and so on and no scratches.
- 【2lbs Lightweight & Low Decibel】Cordless mini vacuum is lightweight and portable, only 2 pounds, can be operated with one-hand relaxing. Operate at low frequencies below 70dB, which can provide a comfortable environment, gives you a quiet cleaning experience.
Handheld Vacuum,GOOVI Hand Vacuum Cordless with Rechargeable Quick Charge, Lightweight Hand Vac Portable Hand Held Vacuum Cordless for Home, Kitchen, Car Cleaning
- CORDLESS DESIGN: GOOVI handheld vacuum free your movement for cleaning your stairs, kitchen, car or hard-to-reach corners without cables.
- LIGHTWEIGHT VACUUM:Weighing in just 1.8 lbs, GOOVI hand vacuum is lightweight and portable enough to help you clean everywhere easily.
- IMPROVED HEPA FILTER: GOOVI hand vacuum cleaner features a stainless steel HEPA filter which is exquisite workmanship with long durability. It can be washed for much more times than paper filter.
- 2200mAh LITHIUM BATTERY: GOOVI enhance the latest generation of handheld vacuum cleaners on the market. With a 4x2200mAh high-capacity lithium battery and up to 20 minutes of operation, the EV678 can fully charge the battery in 4 hours.
- WHAT YOU GET: GOOVI hand vacuum cordless rechargeable comes with a brush tool, a crevice nozzle tool, an adapter. Get a refund from us if you are not satisfied with this mini vacuum.
APOSEN Handheld Vacuum Cleaner with HEPA Filter 7Kpa Wet Dry Hand Vac 14.8V Lithium with Quick Charge Tech Powerful Cyclonic Suction A7-B
- 【7000PA Dry & Wet Hand Vac】APOSEN Handheld vacuum A7 utilizes a 100W ultra-high power motor with suction up to 7Kpa. Durable use in wet/dry conditions, it can easily clean dust, crumbs, cat litter, pet hairs, as well as spilled milk, liquids(0.15L). No more worry about liquid from now! Tips: The crevice nozzle can make the suction more powerful.
- 【Advanced Cyclone Filtration System】Washable Hepa Filter with a pre-filter case, designed to maintain unclogged powerful suction. And it traps 99.97% fine particles and contaminants from the air even cleaning the liquid. Plus, you will get a free Hepa Filter for replacement. 0.5L large dust bin holds more dirt and is easy to empty with one press. Easy to use, easy to clean.
- 【2200mAh Lithium Battery】APOSEN now has the latest generation of handheld vacuum cleaners on the market. With a 4x2200mAh high-capacity lithium battery and up to 20 minutes of operation, the A7 can fully charge the battery in 4.5 hours. At the same time, temperature protection, input voltage protection, input current protection, and short circuit protection ensure better device safety throughout the charging process. Anytime, A7 is a good assistant for your cleaning.
- 【All-round Cleaning】Hand Vac A7 comes with 3 serviceable attachments to save your time and improve cleaning efficiency: the rubber nozzle can handle the liquid mess well；the crevice nozzle can get rid of the trash in tight spaces, and the brush nozzle is for pet hair. One cleaner, all-round cleaning.
- 【Noise Free】Worried about Vacuum's noise interrupting others? In addition to the general loudness, the Hand Vac A7 can operate at low frequencies below 70dB, which sounds less annoying and gives you a quiet cleaning experience. The best gift for your family or your friends.
Understanding the Distortion Spec of Cordless Loudspeakers
In this essay, I am going to explain the specification "total harmonic distortion", often also referred to as "THD" which is often used in order to describe the quality of cordless loudspeakers.
It is often hard to choose a suitable set of wireless surround sound speaker models given the great amount of models. Aside from looks, you will often be faced with having to examine several of the technical specifications. Several of these are probably rather easy to comprehend for instance "output power" or "frequency response". However, a specification that is not as easily understood is the term regarding how much distortion the loudspeaker has.
THD is expressed either in percent or in decibel and indicates how much the signal that the speaker outputs deviates from the music signal that is input into the speaker. If a loudspeaker specifies a distortion of 10% to provide an example then one tenth of the energy radiated by the speaker is distortion. A distortion of 10% can also be stated as -20 dB. 1% distortion is equal to -40dB.
Harmonic distortion inside a wireless loudspeaker is really the result of several components, such as the power amplifier that is built into the loudspeaker to drive the speaker element. Amplifier distortion generally depends on the amp output power and is now and again given for several output power levels.
Distortion ratings for different output power levels are generally given for a few power levels or as a chart listing distortion versus output power. Both of these techniques allow to better evaluate the quality of the amplifier.Besides, please note that distortion commonly is measured for a certain test tone frequency. Commonly a 1 kHz sine wave tone is utilized during the measurement. Distortion, though, is usually dependent on the signal frequency. Many amplifiers will show increasing distortion with rising frequency. In particular digital class-D amplifiers are going to show rather high distortion at frequencies higher than 5 kHz.
Another element causing distortion is the speaker element that generally works with a diaphragm which carries a coil that is suspended in a magnetic field. The magnetic field is excited by the music signal. The change in magnetic flux, however, is not perfectly in sync with the music signal as a result of core losses and other factors. Also, the kind of suspension of the diaphragm is going to create nonlinear movement. As such there is going to be speaker element distortion which furthermore depends on the amount of output power with which the speaker is driven.
As such both the amp in addition to the loudspeaker element itself contribute to distortion. Moreover, there are other factors that also contribute to distortion. The total level of distortion is the total of all of these factors. The loudspeaker enclose will shake to some extent and as a result add to the distortion.
The overall distortion of the loudspeaker is usually determined by a measurement that comprises a low-distortion audio generator plus a microphone which is connected to an audio analyzer. The audio analyzer is going to calculate the level of higher harmonics and compare these with the main signal to calculate the distortion. Then again, pure sine signals barely give an accurate picture of the distortion of the wireless speaker with real-world signals. A better distortion analysis is the so-called intermodulation distortion analysis in which a test tone that consists of a number of sine waves is used. Next the number of harmonics at different frequencies is calculated.
Wireless loudspeakers will also have some level of distortion during the audio transmission. The level of distortion will depend on the sort of wireless transmission method and also the quality of components. Typically 900 MHz FM transmitters have among the highest amount of distortion. Better products will utilize digital transmission and transmit at 2.4 GHz or 5.8 GHz to minimize audio distortion.