Explore the growing potential of bone conduction sleep speakers, combining innovative sound transmission technology, Bluetooth 5.4 connectivity, white noise playback, and sleep timer functions. Designed with compact ABS, cloth, and silicone materials, this sleep audio device offers 8–11 hours of playback and convenient wireless listening for relaxation and bedtime routines. Since 2008, Jaskey Limited has specialized in consumer audio product development, providing OEM/ODM customization, industrial design, and manufacturing solutions to help global brands develop differentiated lifestyle audio products.
The Portable LED Speaker combines 8W audio output, Bluetooth 5.3 connectivity, and colorful LED lighting in a stylish ABS plastic and fabric design. Supporting Bluetooth, TF card, USB, AUX, FM radio, and TWS connectivity, it offers versatile music playback for home entertainment, outdoor gatherings, travel, and everyday listening. Powered by a 1200mAh rechargeable battery with approximately 4–5 hours of playback, this multifunctional speaker is an ideal choice for retailers, wholesalers, and brands seeking competitive portable audio products. Jaskey Limited provides OEM/ODM customization services to support branding, product development, and wholesale cooperation.
Discover the latest wearable Bluetooth speaker designed for portable, hands-free listening. Featuring Bluetooth 5.4, a 4W speaker driver, clip-on design, TWS interconnection, hands-free calling, and USB-C charging, it offers a practical audio solution for outdoor activities, cycling, travel, and everyday use. With OEM/ODM and private label customization options, it is suitable for brands, distributors, retailers, and e-commerce sellers looking to expand their portable audio product ranges.
The Cube Bird Dancing Speaker is a creative Bluetooth speaker that combines a playful bird-inspired design with practical audio features. Equipped with Bluetooth 5.4, hands-free calling, TWS wireless connectivity and a 3W speaker, it delivers convenient wireless entertainment in a compact design. With up to 4 hours of working time, it is suitable for home, desktop use, parties and gift collections. Ideal for retailers, wholesalers and consumer electronics brands, this novelty speaker offers opportunities for product differentiation, seasonal promotions and OEM/ODM customization.
The 2-in-1 Bluetooth Speaker with TWS Earphones combines a portable wireless speaker and true wireless earbuds in one convenient design. Featuring Bluetooth 5.3, a 5W speaker, F13 copper ring earbud drivers, and a 10–15m transmission range, it offers flexible listening for home, office, travel, and everyday entertainment. The earbuds provide approximately 4–5 hours of playback, while the speaker delivers 2–3 hours of music. Made from ABS plastic and silicone, this versatile audio product is ideal for consumer electronics brands, retailers, and gift markets seeking innovative wireless audio solutions.
The Sport TWS Earphone features Bluetooth 5.4 connectivity, a compact charging case, and a lightweight ABS plastic design for convenient everyday wireless listening. With a transmission range of up to 10 meters, 2.5–4 hours of playback time, and a 200mAh charging case, it is suitable for commuting, leisure, and daily use. Jaskey Limited offers OEM/ODM cooperation opportunities for brands, wholesalers, importers, and retailers seeking reliable wireless audio products from an experienced China consumer electronics manufacturer.
Thanks for visiting our booth in Hong Kong Electronic 2026 Fair (Autumn Edition)
Bluetooth wood headphones, wooden Bluetooth headphones, wood and metal headphones, Bluetooth on-ear headphones, China headphone manufacturer, OEM Bluetooth headphones, ODM headphone manufacturer, private label headphones, Qualcomm aptX headphones, 40mm dynamic driver headphones, custom wireless headphones, headphone product development, China audio manufacturer
The China Waterproof Portable Bluetooth Speaker combines durable design with versatile audio performance for outdoor and everyday use. Featuring Bluetooth 5.3, hands-free calling, TWS connectivity, TF card and AUX support, it offers flexible listening options in a compact ABS and silicone design. With a 1800mAh battery and water-resistant construction, it is suitable for travel, camping, beach outings, and daily entertainment. Jaskey Limited provides OEM/ODM customization services for brands, distributors, and importers seeking reliable portable Bluetooth speaker solutions.
The WiFi Alexa Smart Speaker combines voice control, wireless audio, and smart home connectivity for convenient everyday living. Featuring support for Alexa skills, compatible Tuya smart home devices, multilingual interaction, and app-based control, it offers a practical solution for modern connected homes. With a compact design, 5W speaker output, and 2.4GHz WiFi connectivity, it is suitable for bedrooms, living rooms, and home office environments.
What is the damping coefficient
Damping coefficient refers to the rated load amplifier (mini hifi speaker) impedance and the ratio of actual impedance of power amplifier., the internal resistance of it represent the power output of the mini hifi speaker of the damping effect index of less.
Damping coefficient of general use DF (that is, the Damping Factor), DF = Rs/Ro, Rs is the mini hifi speaker's internal resistance, Ro is the amplifier's output impedance.The less the DF, the greater the distortion.
We know that the mini hifi speaker (including headphones) after excitation vibration, even if the excitation signal stopped, the vibration of the speaker will not stop immediately, but gradually attenuation vibration and eventually stop, on the back of the excitation signal interference.At the same time in the process, because of the voice coil cutting lines of magnetic force, make the mini hifi speaker itself into a power source, form and the internal resistance of the power amplifier circuit and generate an electric current, the current under the action of magnetic field, have the opposite force, make the process of vibration attenuation become smaller (that is, produce damping).Obviously, the smaller the internal resistance of the power amplifier, mini hifi speaker attenuation process is shorter, the smaller the distortion.
The definition of damping coefficient
Damping coefficient, (Damping Factor) refers to the rated load of the power amplifier, mini hifi speaker impedance and the ratio of power amplifier actual impedance.Small damping coefficient large said amplifier output resistance, damping coefficient is amplifier in the signal disappeared after the ability of controlling the movements of the speaker cone.Amplifier with high damping coefficient for the mini hifi speaker is more like a short circuit, the signal termination can reduce the vibration.Power amplifier output impedance will directly affect the mini hifi speaker system low Q value, which affects low frequency characteristics of the system.The Q value of the speaker system is unfavorable and exorbitant, generally within the range of 0.5 ~ l is good, the output impedance of power amplifier is the factor to low Q value rise, therefore generally want power amplifier output impedance is small, good damping coefficient greatly.Damping coefficient between tens to hundreds of commonly, the high quality professional power amplifier of damping coefficient can be as high as more than 150-200.
Damping coefficient analytical
One of the specifications of the power amplifier
Damping coefficient is one of the parameters of the power amplifier, it directly affect the handling of power amplifier for mini hifi speaker system.Damping coefficient data provided by the general power amplifier and released only a certain frequency of damping coefficient.
Not the higher the better
The complexity of the relationship between the mini hifi speaker and amplifier power supplement principle is a basic and sensitivity, and between current and horn is more unpredictable, can't can be judged from the specification table, only by experience and with ears to hear.In addition to current can't grasp, and as is the Damping coefficient, Damping Factor).
Damping coefficient does not represent the damping force.Horn (amp) maximum damping force when it is short circuit, for a limited value.The short circuit Q value of the corresponding horn.Again big damping coefficient is infinitely close to this value.For example;The damping coefficient of 10 to 90%, 100 99%, 1000 99.9%, so the damping coefficient is not necessary to too much.Negative feedback is the damping coefficient of the decisive factor, excessive damping coefficient for the depth of the negative feedback, will bring many negative effects.So, different damping coefficient of the amplifier sample, cannot be simply explained by damping coefficient, because in fact has no difference between 99% and 99.9%.
Different spectrum will change
Damping coefficient is one of the parameters of the power amplifier, it directly affect the handling of power amplifier on the horn.Damping coefficient data provided by the general power amplifier and released only a certain frequency of damping coefficient.
But in fact most of the damping coefficient of the power amplifier, will change in different frequency band, so the data can only be provided as a about instructions.Some mini hifi speakers need high damping coefficient to control the speaker unit, if deserve to go up the insufficient damping power amplifier,mini hifi speaker unit will be out of control, a redundant harmonic vibration and from loss.
Damping coefficient of the match
Damping coefficient KD is defined as: KD = rated power amplifier output impedance (equal to rated speaker impedance)/power amplifier output impedance.Because of the power amplifier output impedance in fact has become a mini hifi speaker electrical damping device, KD value decided the mini hifi speakers damping quantity of electricity.KD value, the greater the electrical damping quantity is heavier, amplifiers, of course, the KD value is not the bigger the better, the KD values will make the speaker electrical damping is overweight, so that make the pulse front set up time, reduce the index of transient response.So when selecting amplifier should not be one-sided pursuit of large KD values.As household high-fidelity amplifier damping coefficient have a experience for reference, the minimum requirements: transistor amplifiers KD values greater than or equal to 40, vacuum tube amplifiers KD values greater than or equal to 6.
Damping coefficient is not one of the important electric index of power amplifier, published in 2002, the ministry of information industry audio association of high-fidelity amplifier, there is no the index in the index detection requirements.
