10. What are the characteristics of the speaker unit and sound performance?
(1) 3.5-inch carbon fiber midwoofer
A. Material characteristics and large size
The SP3 BT employs a 3.5-inch carbon fiber midwoofer, larger than typical products in its class. These larger woofers have an inherent advantage over smaller woofers in dynamics, projecting a larger soundstage, and other sonic attributes. Whether watching movies or listening to music, this woofer is truly capable of expressing the grandness of the audio even at louder volumes.
Carbon fiber is extremely strong and highly rigid yet lightweight – the ideal properties for a speaker driver. The light weight of carbon fiber allows the woofer to have rapid transient response, while carbon fiber’s high strength and rigidity reduce non-linear distortion by minimizing unwanted secondary vibrations when the driver is moving when producing sound. Altogether, the carbon fiber material of the woofer helps to reproduce sound faithfully and lets you be more immersed in your high fidelity listening.
Each fiber of carbon fiber in the SP3 BT is only 0.007mm thick - the thickness of a single hair. These fibers are braided together, which helps to enhance sound quality by ensuring a wrinkle-free diaphragm as well as making the diaphragm stronger and more resistant to cracks after extended driver movement and usage.
B. Asymmetrical internal and external magnetic circuits, high magnetic density
Our development team created an asymmetrical internal and external magnetic circuit system. An auxiliary magnet was added to the center of the SP3 BT’s internals to form an inner and outer magnetic circuit, which improves the strength of the magnetic field created – allowing for a magnetic flux of up to 1.2 Tesla. This is the powerful driving force behind the driver that gives the SP3 BT its dynamic sound. In addition, the asymmetrical internal and external magnetic circuit systems also help to reduce non-linear distortion across all frequencies, so good sound is always on hand no matter what music one is listening to.
C. Double-sided dipping process
During production, the SP3 BT was processed with double-sided impregnated special damping adhesive to ensure the transparency of the sound during the sound transmitting process. The results are rigid yet soft sound performance, transparent vocals with rich details, and very sensitive bass response.
(2) 1-inch silk tweeter
A. Large size
Unlike many other active desktop speakers employing a ¾-inch tweeter, the SP3 BT instead utilizes a 1-inch tweeter that can produce frequencies as high as 35kHz. The tweeter’s KSV copper-clad aluminum voice coil that even at high volumes, ultra-high frequencies remain uncompressed – the result being better treble reproduction even in off-axis listening as well as highly resolving treble with natural timbre. With the SP3 BT, you will be able to hear even the most subtle of vibrations generated by instruments.
B. Structure design of the Speaker
The softness of the internal part of the silk tweeter also acts as a soundwave absorbent, effectively absorbing unwanted sound waves behind the driver and further enhancing the sound output by the tweeter.
Low resonance frequency and high current carrying capacity have always been the goals of those designing high fidelity audio products. The FiiO SP3 BT features a large empty cavity rear of the tweeter magnet, allowing the tweeter to play frequencies as low as an astonishing 800Hz. Even when the tweeter is playing frequencies above 20kHz, the rear cavity and overall design of the tweeter allow for unwanted soundwaves to escape and reduce resonances generated by tweeter movement. The result is silky smooth yet well-extended treble.
*Dome treble magnetic circuit cooling technology: a vibration reduction technology for magnetic fluid cooling, which can achieve better resolution and extension for high frequencies.
