The YSQ180 is a 2-inch full-range speaker specifically designed for extremely compact spaces. With an ultra-thin depth of only 30.4mm and a small outer diameter of φ55mm, it can easily be embedded into various narrow cavities or panels. With a resonant starting point of 230Hz and a sensitivity of 80dB, it delivers clear, natural mid-to-high-frequency response even when driven by a low power of just 4W. It is an ideal choice for supplementing high-frequency details, constructing auxiliary soundfields, or replacing micro sound-generating units.
Rated Power: 4 watts (W)
Nominal Impedance: 4 ohms (Ω) ±0.6Ω (high-precision control)
Maximum Power: Not specified (recommended for use within 1.5 times the rated power)
Resonant Frequency: 230 hertz (Hz) ±10%
Sensitivity: 80 decibels (dB) ±2dB (1W/1m)
Effective Frequency Range: 230Hz ~ 5kHz
Mounting Cut-out Diameter: φ64.1 millimeters (mm)
Overall Dimensions: 75.1mm × φ55mm × 30.4mm
Precise Impedance Control: The narrow tolerance impedance of 4Ω ±0.6Ω ensures stability and predictability in system impedance when multiple units are connected in parallel or series, facilitating system design.
Acoustic Performance Positioning
Mid-to-High-Frequency Supplement Specialist: Its frequency response (230Hz-5kHz) precisely covers the core vocal range and most instrumental harmonics, excelling particularly in enhancing speech clarity and musical detail reproduction. The 230Hz F0 design allows it to provide a certain lower mid-frequency limit even within a limited volume.
High Efficiency with Low Power Drive: With a sensitivity of 80dB and a rated power of 4W, it can be easily driven by most car head units, low-power amplifier ICs, or micro digital amplifier modules, making it suitable for use as a tweeter supplement or as an independent full-range unit.
Typical Application Scenarios
Automotive Audio Systems:
High-Frequency/Mid-to-High-Frequency Supplement: Used as a supplement to front-stage tweeters or for high-frequency extension in rear surround or center channels.
Dedicated Soundfield Construction: Establishing independent personal listening zones in locations such as headrests or center consoles.
Specialized Equipment and Consumer Electronics: Suitable for applications requiring high-quality micro sound-generating units, such as small portable speakers, smart device notification sound units, intercom devices, and instrument alarm tones.
Installation Recommendations: Due to its extremely small size, precise alignment with the φ64.1mm cut-out is required during installation. It is recommended to use dedicated mounting brackets or gaskets and ensure adequate cavity volume behind the speaker (even if it is a small sealed space) for optimal acoustic performance. Avoid overdriving to prevent damage
