The SUNNY PRO JP-102 High-Efficiency Piezoelectric Horn Tweeter (Square Flange / 150W–300W Peak) is an audio transducer engineered for high-frequency acoustic reinforcement in stage monitors, PA speaker cabinets, professional DJ systems, bird/swallow attraction houses, and industrial warning systems. Utilizing a solid-state piezoelectric ceramic element coupled to an integrated exponential horn flare, it reproduces high-frequency audio (3 kHz to 20 kHz) with transient response and high sound pressure levels (SPL) without requiring a conventional electromagnetic voice coil or heavy magnet. Because of its capacitive, high-impedance solid-state design, the JP-102 draws low current and can be connected directly across multi-way passive speaker systems without complex high-order crossover networks.

Specifications

• Brand / Model: SUNNY PRO JP-102 (Piezoelectric Horn Tweeter Series)
• Transducer Technology: Piezoelectric Ceramic Bimorph / Solid-State Element
• Horn Type / Flare: Integrated Wide-Dispersion Exponential Horn Flare
• Frequency Response: 3,000 Hz to 20,000 Hz (3 kHz – 20 kHz)
• Nominal / Rated Power Handling: 75 W to 150 W RMS (System Power Dependent)
• Maximum / Peak Power Handling: Up to 300 W Peak (Integrated into multi-way passive system)
• Sound Pressure Level (Sensitivity / 1W/1m): Approx. 92 dB to 95 dB SPL (±3 dB)
• Equivalent Electrical Impedance: Typ. Appears as a capacitive load (~0.1 μF to 0.15 μF); presents high impedance at low frequencies (>1,000 Ω at DC/Bass) and approx. 4 Ω to 16 Ω at ultrasonic frequencies
• Continuous Working Voltage (VRMS): 15 V to 25 V RMS Max.
• Direct Current Resistance (DCR): ∞ (Open circuit / DC Blocking characteristic)
• Dispersion Angle: 90° Horizontal × 40° Vertical (Wide high-frequency coverage)
• Housing Material: High-Impact, Flame-Retardant ABS Plastic (Molded Matte Black Finish)
• Terminal Type: Dual Solder Lug Terminals / Quick-Connect Faston Spade Terminals (Polarity Marked)
• Overall Dimensions (Flange Face): Approx. 85 mm × 85 mm to 98 mm × 98 mm (Square)
• Mounting Depth: Approx. 55 mm to 65 mm
• Cutout / Baffle Hole Diameter: Approx. 75 mm to 80 mm
• Mounting Holes: 4 Corner Screw Holes (Standard 4mm diameter)
• Net Weight: Approx. 45 g to 65 g (Lightweight solid-state construction)

Features

• Solid-State Piezo Ceramic Element: Operates without a traditional voice coil, copper windings, or heavy ferrite magnets, eliminating voice coil burnout and thermal failure.
• Self-Limiting Low-Frequency Rejection: Inherently behaves as a capacitor, naturally attenuating low-frequency bass signals and preventing destructive excursion without mandatory series capacitors.
• Wide High-Frequency Dispersion: The molded exponential flare delivers balanced horizontal dispersion (up to 90°), providing crisp highs across wide listening areas.
• High Power Tolerance & Efficiency: Converts electrical audio voltage directly into mechanical sound waves with minimal power draw from the main power amplifier.
• Durable Weather-Resistant ABS Shell: Enclosed in a rugged ABS housing that resists humidity and temperature fluctuations, making it suitable for bird-house calling systems, public address, and mobile DJ rigs.

Common Applications

• PA & Stage Sound Reinforcement: Adding high-frequency clarity to 2-way and 3-way PA speaker cabinets, stage monitors, and karaoke boxes.
• DJ & Mobile Audio Rigs: High-frequency top-end reinforcement for subwoofer/satellite combos and portable party sound systems.
• Bird & Swallow Calling Systems (Swiftlet Farming): Broadcasting continuous high-frequency bird attraction chirps and acoustic cues in humid farm environments.
• Industrial & Alarm Warning Systems: Generating sirens, security alert tones, and high-frequency repellers.
• DIY Audio & Speaker Restoration: Upgrading blown electromagnetic tweeters in vintage home audio or budget PA enclosures.

Usage Tips

• Crossover & Series Resistor Protection:
  • Although piezo tweeters block low frequencies naturally, their capacitive impedance drops at ultrasonic frequencies (>20 kHz), which can cause amplifier instability or oscillation in high-power setups.
  • Always wire a 20Ω to 50Ω (5W to 10W) wirewound or ceramic power resistor in series with the positive (+) terminal of the tweeter when connecting to high-power amplifiers. This stabilizes the amplifier load and protects the ceramic element from excessive voltage spikes.
• Optional High-Pass Filter for Tone Shaping: For smooth integration and to remove mid-range harshness (3 kHz–5 kHz), place a 2.2 μF to 4.7 μF non-polarized bi-polar electrolytic or film capacitor in series with the positive lead.
• Wiring in Parallel Arrays: Multiple JP-102 tweeters can be wired in parallel (e.g., in swiftlet attraction arrays or multi-tweeter PA boxes) without overloading the amplifier's low-impedance rating, as each additional unit simply increases total capacitance.
• Mounting & Sealing: When installing into a speaker baffle, place a thin foam gasket or bead of silicone around the rear rim of the front flange to maintain an airtight acoustic seal inside the enclosure.
• Soldering Lug Precaution: Solder connections rapidly (under 3 seconds at 300°C–320°C) to avoid transferring excessive heat into the internal ceramic wafer connection points.