250ohm Headphone DIY speaker unit Tesla technology 45mm 50mm Speakers Unit

Description

Top grade 250 ohm Headphone DIY speaker unit Tesla technology 45mm 50mm Speaker Unit for DIY headset excellent sound
We also don't know this speaker origin brand and model, but I can sure the headphone offcial price over
00.
We have limite quantity of these speakers, very rare.
Tesla II unit,
Solder joints are small, welding has certain difficulty, we will test all speakers before sent to customers
,
NOTE:
we do not accept any reason to return or exchange
after welded
.
The unit diameter is 45mm, free 2pcs 45mm to 50mm adapter rings, so the speakers can also be install in 50mm headphone shell.
Important
note:
These speakers with very strong magnetic and must be very careful when soldering
, Please do not put the two speakers too close after take out from the plastic holder. Because the magnetic too strong, please make sure the speaker don't close to any metal that with iron, when you solding the speakers, make sure you have something else hold the speaker firmly. We are not responsible If you damage the speaker
diaphragm by careless.  The speakers will be packed in safe hard box to avoid damage in transmit.
Unit: Tesla technology II silver
color speakers
Outer diameter: 45mm
Free a pair 45mm to 50mm adapter rings
Frequency response range: 10-40000Hz
Sensitivity:
103
dB
±2dB
@1KHz
AC Impedance: 250Ω
±3%
DC Impedance: about 240Ω
Tesla technology
Based on the newly designed drive unit and the magnetic field-optimized ring magnet, it can provide more than 1.2 Tesla drive power, reaching a new level of technology, which is twice the conversion capacity of the traditional headphone unit. Thanks to this enhanced magnetic field, the voice coil will be more compact while still providing very high efficiency. The three-layer composite diaphragm provides a highly accurate frequency response and guarantee, and with high-intensity magnets, you hear transparent, distortion-free sound.
What is meant by "Tesla technology"?
By Tesla technology, we mean a series of measures carried out on our sound transducers in relation to their design and the materials used. Due to these measures, sound transducers with this technology differ fundamentally from conventional ones. The most striking feature is a very strong annular magnet made of neodymium.
Headphones that have sound transducers that use Tesla technology sound cleaner, more transparent and more wideband and are significantly more efficient, which is particularly beneficial on devices with low sound pressure levels. In addition, under the same conditions they are louder than most conventional headphones.
What are the advantages of Tesla technology?
Headphones with sound transducers with Tesla technology sound louder, have less distortion, exhibit a wider frequency response and sound more precise. In addition, they can reproduce higher sound levels without any distortion. Music therefore sounds cleaner and more transparent, the stage of instruments becomes more tangible and the output of the device is used even better. Higher sound pressure levels can also be achieved.