Soundstream RS.42 – Reference Series 4" 2-Way Slim Coaxial Car Speakers, 300W Max, OEM Fit with Dome Tweeter & Polypropylene Cone
Soundstream RS.42 – Reference Series 4" 2-Way Slim Coaxial Car Speakers, 300W Max, OEM Fit with Dome Tweeter & Polypropylene Cone is backordered and will ship as soon as it is back in stock.
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The Soundstream RS.42 Reference Series 4" 2-way coaxial car speakers are the perfect slim-fit upgrade for compact cars and tight dash or rear-fill speaker slots. Built with a polypropylene cone, 1” dome tweeter, and 4-ohm impedance, they deliver crisp highs and smooth mids without needing a bulky setup. Rated at 300W max power and only 1.75" deep, these speakers are designed for easy OEM replacements and come complete with protective grilles for a clean, finished look.
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The Soundstream RS.42 4" Coaxial Speakers are built for car owners who want improved sound clarity in compact spaces. As part of the trusted Reference Series, they’re engineered to fit seamlessly into tight OEM slots—like dash enclosures, rear pillars, or small door cavities—without spacers or modifications.
These 2-way coaxials bring clean mids and crisp highs, making them a great match for factory stereo upgrades, daily drivers, and compact system builds where space and simplicity matter.
Size & Configuration |
4 Inch (100mm) |
RMS / Max Power (Watts) |
40W / 80W |
System Impedance |
4-Ohm |
- [2-WAY COAXIAL DESIGN – MID-HIGH CLARITY IN ONE UNIT] Each speaker combines a polypropylene cone woofer with a 1” dome tweeter for balanced, full-range performance. Whether you're listening to talk radio, podcasts, or music, the RS.42 delivers consistent clarity without distortion or muddiness.
- [300W MAX POWER – BUILT FOR FACTORY SYSTEMS & ENTRY-LEVEL AMPS] With 150W RMS (combined) and 300W peak handling, these speakers work well with stock head units or small aftermarket amps, giving you better dynamics and sound quality with minimal upgrades.
- [SLIM PROFILE – FITS TIGHT FACTORY LOCATIONS] Measuring just 1.75” in mounting depth, these 4" speakers drop into dash slots, corner locations, or shallow rear-fill positions easily. Ideal for compact cars or trucks where standard speakers don’t fit.
- [4 OHM IMPEDANCE – EASY SYSTEM COMPATIBILITY] With a universal 4-ohm voice coil, these speakers are compatible with nearly all factory and aftermarket systems—just plug, mount, and play.
- [GRILLES INCLUDED – PROTECT YOUR SPEAKERS WITH STYLE] Includes protective grilles that guard the speaker cone from dust and damage while maintaining a clean, OEM-like finish for visible installs.
Ideal For:
- Factory speaker replacements in small cars and trucks
- Dash, rear-fill, or door speakers in tight locations
- Budget-friendly audio upgrades for OEM systems
- Users wanting better mids/highs without external amps
- Entry-level builds needing simple, clean-sounding coaxials
If you want to improve your vehicle's sound without overhauling your entire system, the Soundstream RS.42 Reference Series 4” Speakers are an excellent starting point. Compact, efficient, and tuned for clarity, they deliver the upgrade your stock setup has been missing, without breaking the bank or requiring deep install work.