The Pioneer TS-A1678S is a 6.5" 3-way coaxial speaker from the A-Series, delivering 320W max power and 70W RMS, designed for rich bass, crisp highs, and smooth sound transitions in automotive audio systems.

🔊 Key Features

• Speaker Type: 3-way coaxial full-range

• Size: 6.5" (16.5 cm)

• Maximum Power: 320W

• Nominal Power (RMS): 70W

• Frequency Response: 37Hz – 31kHz

• Sensitivity: 91 dB (1W/1m)

• Impedance: 4Ω

• Cone Material: Carbon and mica reinforced IMPP™ (Injection Molded Polypropylene)

• Surround: Elastic polymer for quicker response and higher sensitivity

• Design Concept: Open & Smooth™ sound for seamless frequency transition and wide dispersion

• Adapter Ring: Included for flexible installation

• Speaker Grill: Not included