Description
Pioneer TS‑A1681F
The Pioneer TS‑A1681F is a 6.5‑inch (≈16.5 cm) 4‑way coaxial speaker pair from the A‑Series, designed to deliver full‑range sound from deep bass to crisp highs — in a compact vehicle speaker size. With a peak power handling of 350 W and a nominal (RMS) rating of 80 W, it uses a carbon‑and‑mica‑reinforced IMPP™ woofer cone for enhanced rigidity and clarity, accompanied by a 42 mm midrange cone and dual 11 mm tweeters for broad frequency coverage. The speaker offers a frequency response from approximately 35 Hz to 29 kHz, and a sensitivity around 91 dB, making it suitable for high‑quality upgrades without needing extreme amplification.
Specifications
Product Performance
| Specification | Value |
|---|---|
| Continuous Power Handling (RMS) | 80 W |
| Maximum Peak Power Handling | 350 W |
| Nominal Impedance | 4 Ω |
| Sensitivity (1W/1m) | 91 dB |
| Frequency Response | 35 Hz – 29 kHz |
| System Type | Coaxial 4-way, Twin PET Dome Tweeter |
| CarSoundFit | Yes |
Features
| Specification | Value |
|---|---|
| Cut Out Dimensions | 5-5/8″ |
| Midrange Dimensions | 1.63″ |
| Mounting Depth | 2-3/8″ / 59 mm |
| Speaker Grill | Included |
| Tweeter Dimensions | 0.43″, 0.43″ Super |
| Woofer Dimensions | 6.5″ |
Materials
| Specification | Value |
|---|---|
| Basket Material | Metal |
| Custom Fit Basket | Yes |
| Cone Material | Carbon and Mica reinforced Injected Molded Polypropylene (IMPP) |
| Cone Material – Midrange | Polyetherimide (PEI) |
| Damper | Poly cotton Aramid |
| Diaphragm Material | Polyethylene terephthalate (PET) |
| Magnet Material | Ferrite – Woofer, Neodymium – Tweeter |
| Magnet Weight | 11.3 oz – Woofer, 0.7 oz – Tweeter |
| Surround Material | Elastic Polymer |
| Surround Type | Rolled |
| Voice Coil Bobbin | Glass Imide |
| Voice Coil Material | Glass Imide |
| Voice Coil Wire | Copper |
| Wire Terminals | Lug Type |
About The Product
TS-A1670F 6-1/2” 4-Way Coaxial Speaker
The TS-A1670F 6-1/2” 4-way coaxial speakers deliver 350 W max power (80 W nominal) and feature a carbon and mica-reinforced IMPP™ cone, 1-5/8″ (41 mm) PEI midrange, and dual 11 mm PET hard dome tweeters (including a super tweeter). These A Series speakers provide smooth, detailed, and high-impact sound with efficient power handling.
A Series
The A Series speakers are engineered for efficiency and seamless integration between subwoofers and full-range speakers. Pioneer’s OPEN & SMOOTH sound concept ensures a uniform off-axis frequency response and smooth transition between midrange and tweeter drivers. The result is balanced, detailed audio performance throughout the vehicle.
Loud & Clear
These speakers offer high efficiency and precision. They reproduce all details of your music without exaggeration and maintain clarity even at low power. High power handling allows connection to external amplifiers, enhancing dynamic range and impact.
Carbon and Mica Reinforced IMPP™ Cone
The lightweight yet rigid IMPP™ cone prevents distortion under high power. CAE (Computer-Aided Engineering) creates a curvilinear cone with varying thickness to optimize responsiveness and precision. Carbon and mica integration ensures balanced resonance across the entire frequency range.
Polyetherimide (PEI) Midrange with PET Hard Dome Tweeters
PEI and PET materials maintain thermal stability and mechanical consistency across wide frequency ranges. A front diffuser balances audio during transitions from on-axis to off-axis listening, ensuring uniform sound throughout the vehicle.
Pioneer Exclusive Multi-Fit Adapters
Included multi-fit installation adapters allow flexible fitting across multiple vehicles. Tabs can be removed or modified to match original speaker mounting points, improving installation quality and acoustic performance.
Keep it Simple and Clean
In-line or integrated crossovers reduce wiring complexity and eliminate the need for bulky external boxes, making installation cleaner and simpler.
CarSoundFit App
The CarSoundFit app simulates your car’s audio experience. It lets you compare stock speakers with Pioneer options, demonstrating improvements in clarity, detail, and overall in-car sound performance.
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