Pioneer TS-A1371F 5.25″ A-Series 3-Way Coaxial Speakers
50 W RMS 5-1/4-inch coaxials with PET tweeter and Multi-Fit adapters
$109.99
Overview
The Pioneer TS-A1371F brings A-Series 3-way sound to 5.25-inch openings at 50 W RMS and 300 W peak on a 4-ohm load. A carbon-and-mica IMPP woofer, 1-5/8-inch cellulose midrange, and 11 mm PET hard-dome tweeter reach from 44 Hz to 52 kHz at 89 dB. Grilles and Multi-Fit adapters are included for compact door panels.
Product details
5.25-inch A-Series 3-way upgrade
When doors only clear a 5-1/4-inch basket, the TS-A1371F keeps the same A-Series voicing as larger siblings. Continuous power is 50 W RMS with 300 W peak capacity at 4 ohms. Sensitivity of 89 dB helps a stock head unit fill the cabin without an amp.

IMPP woofer with PET and cellulose stack
The carbon-and-mica reinforced IMPP cone handles midbass duties while a 1.63-inch cellulose-fiber midrange and 11 mm (0.43-inch) PET hard-dome tweeter extend detail up to 52 kHz. Frequency response starts at 44 Hz for tighter door cavities.

Shallow depth for compact doors
Mounting depth is 2-1/8 inches with a 4-3/4-inch cutout. Pioneer ships Multi-Fit adapters and grilles in the pair. Check door card clearance and match power to the 50 W RMS rating before you swap the factory speakers.
Key features
- 5.25-inch A-Series 3-way coaxials sold as a matched pair
- 50 watts RMS and 300 watts peak power handling at 4 ohms
- Carbon and mica reinforced IMPP woofer cone
- 1.63-inch cellulose midrange with 11 mm PET hard-dome tweeter
- Frequency response of 44 Hz to 52 kHz with 89 dB sensitivity
- Mounting depth 2-1/8 in; cutout diameter 4-3/4 in
- Multi-Fit adapters and grilles included
Specifications
| Weight | 3.06 lbs |
|---|---|
| Dimensions | 15.75 × 8.25 × 4.5 in |
| Size | 5.25 inch |
| Speaker Type | Coaxial |
| Brand | Pioneer |
| Model | TS-A1371F |
| SKU | TSA1371F |
| UPC | 884938509268 |
| Product type | Speakers |
| System type | 3-way coaxial |
| RMS Power | 50 W |
| Peak Power | 300 W |
| Impedance | 4 ohms |
| Sensitivity (1W/1M) | 89 dB |
| Frequency Response | 44 Hz to 52 kHz |
| Mounting Depth | 2-1/8" |
| Cutout Diameter | 4-3/4" |
| Tweeter | 11 mm PET hard dome |
| Midrange | 1.63" cellulose fiber |
| Woofer Cone | Carbon and mica reinforced IMPP |
| Grille Included | Yes |
Important notes
- Sold as a pair for 5.25-inch door or dash openings.
- Confirm the 2-1/8-inch depth and 4-3/4-inch cutout against your panels.
- Speaker adapters or harnesses for specific vehicles are sold separately.
What's in the box
- Pioneer TS-A1371F speaker pair
- Speaker grilles
- Multi-Fit mounting adapters
- Mounting screws





