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Description

Pioneer TS‑A4103

The Pioneer TS‑A4103 is a 4″ × 10″ (10 × 25 cm) 2‑way coaxial speaker pair from Pioneer’s A‑Series, designed for installations where a non‑standard oval size is required (commonly rear‑deck or older vehicles with 4×10 panels). It features an IMPP™ (Injection Moulded Polypropylene) woofer cone and a 42 mm (≈1.625″) cellulose‑fiber cone midrange/tweeter. The speakers are rated for 35 W RMS continuous and 120 W peak power with a 4 ohm nominal impedance and a sensitivity of approx. 91 dB (1 W/1 m). The frequency response spans approximately 38 Hz to 23 kHz, making it capable of both decent bass extension and clear highs.


Specifications

PRODUCT PERFORMANCE
Specification Value
Continuous Power Handling (RMS) 35 W
Frequency Response 38 Hz to 23 kHz
Maximum Peak Power Handling 120 W
Nominal Impedance 4 Ohm
Sensitivity (1W/1m) 91 dB
System Type Coaxial 2-way

FEATURES
Specification Value
Cut Out Dimensions 9-1/2″ x 3-7/8″
Mounting Depth 2-1/2″ / 64 mm
Tweeter Dimensions 1.65″
Woofer Dimensions 5.25″

MATERIALS
Specification Value
Basket Material Metal
Cone Material IMPP – with MICA
Damper Aramid Fiber
Diaphragm Material Cellulose fiber – Tweeter
Magnet Material Ferrite – Woofer, Ferrite – Tweeter
Magnet Weight 8.8 oz – Woofer, 0.8 oz – Tweeter
Surround Material Cloth
Surround Type Rolled
Voice Coil Material Aluminum
Voice Coil Wire Copper
Wire Terminals Lug Type

 


About The Product 

The 4″ x 10″ speaker is often mounted in a vehicle’s rear deck, supporting front speakers and pumping up the volume in your vehicle. Here, we feature Injection Molded Polypropylene (IMPP) technology, high-energy strontium magnets, and urethane surrounds for tight, powerful sound.

A Series

The highly efficient design of the Pioneer A Series speakers intentionally matches the subwoofer and full-range loudspeakers to provide seamless and smooth sound characteristics, with dynamic, high-impact bass that lets you hear and feel the music. Pioneer’s OPEN & SMOOTH sound concept ensures a seamless transition between the midrange and tweeter drivers, delivering a uniform off-axis frequency response optimized for automotive applications, where one or more speakers are often aimed away from the listeners’ ears. The A Series lineup enhances audio details and improves acoustic performance.


Loud & Clear

These speakers are as efficient, if not more efficient, than the stock speakers found in typical cars on the market. They allow you to enjoy a coherent sound without missing any details and without exaggerated response, providing improved precision and more details across the entire audio bandwidth. Their high efficiency also enables you to enjoy exceptional sound from low power sources, and their ability to handle high power allows you to connect them to an external amplifier, letting them shine even more!


Open & Smooth

Pioneer’s OPEN & SMOOTH sound concept ensures a seamless and smooth transition between the midrange and tweeter drivers, delivering a uniform off-axis frequency response. This design is optimized for automotive applications where one or more speakers are often aimed away from the listeners’ ears.


IMPP™ Cone

An extremely rigid yet lightweight cone is essential to avoid cone failure and distortion under high power. Pioneer’s IMPP™ composite cones meet this need perfectly. Computer-Aided Engineering (CAE) was applied to create a curvilinear cone with varying thicknesses during the injection process, maintaining a balance between lightness (responsiveness) and rigidity (precise audio and tight bass).


Cellulose Fiber Midrange and Tweeters

The stable electrical and mechanical properties over a wide frequency range, along with the strength-to-weight ratio of these materials, make them perfect for the high-frequency vibrations of the cone.


Keep It Simple and Clean

Avoid messy installations and keep your speaker wiring as clean as possible. These speakers use an in-line crossover design and/or an integrated crossover already installed on the speaker basket. This eliminates the need for a bulky external box typically found with passive crossovers, saving you from having to find extra space for it. Additionally, it removes the need for extra wires going in and out of your door to accommodate a woofer in the door with a matching tweeter on your dash.

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Questions and Answers

Q1: What is the continuous (RMS) power rating of the TS‑A4103?
A1: It is rated at 35 W RMS.
Q2: What is the maximum (peak) power handling?
A2: It supports up to 120 W peak power.
Q3: What size are these speakers and what type are they?
A3: These are 4″ × 10″ oval 2‑way coaxial speakers — non‑standard size suited for some older vehicles’ rear deck or custom panels.
Q4: What is the frequency response and sensitivity?
A4: The frequency response is approximately 38 Hz to 23 kHz, and sensitivity is about 91 dB (1 W/1 m).
Q5: Will these speakers work with a factory head unit?

A5: Yes — with a sensitivity of ~91 dB and 4 ohm impedance they can work with many factory head units. However, because the RMS power handling is modest (35 W), if you crank the volume or want strong bass, adding an amplifier or pairing with better front speakers would improve performance.


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