The best subs for a truck start with the space you can actually use. Kicker’s Hideaway 51HS10 is our compact powered pick, Rockford Fosgate’s P300-10T suits a larger truck-style enclosure space, and Kicker’s 48CWRT104 CompRT is the shallow driver to consider for a custom box. All three use 10-inch drivers, but they solve different installation problems.
This shortlist compares manufacturer specifications, manuals and exact product identities. We have not installed, listened to or measured these products. “Best” means the most useful fit for the stated job within this selection; it does not promise a universal fit, a measured loudness ranking or a particular sound in your cab.
Three truck subwoofers compared
| Product | Best fit in this shortlist | Space and power | Main limitation |
|---|---|---|---|
| Kicker Hideaway 51HS10 | Compact powered installation | 14 × 9-7/8 × 3-1/8 inches, depth × width × height; 180 W RMS | Allow the manual’s amplifier ventilation space, not just the case dimensions |
| Rockford Fosgate P300-10T | Truck-style powered wedge | 21.7 inches wide × 13.3 high; 4.8-inch top / 7.9-inch maximum depth; 300 W RMS | Substantially larger than the Hideaway; needs heatsink clearance |
| Kicker CompRT 48CWRT104 | Custom shallow sealed enclosure | 3-7/16-inch mounting depth; dual 4-ohm coils; 400 W RMS recommended amplifier power | Driver only: plan a suitable box and separate amplifier |
1. Kicker Hideaway 51HS10: best compact powered choice
The Kicker Hideaway 51HS10 packages a 10-inch subwoofer and 180-watt RMS amplifier in a low aluminum enclosure. Its 3-1/8-inch height makes it the first candidate here when you are working with a shallow space. The footprint is still 14 inches deep by 9-7/8 inches wide, so make a full-size template before treating it as an under-seat solution.
Its useful features include both high- and low-level inputs and an included remote bass control. You can adjust bass level independently of the radio volume. Kicker lists a 50–120 Hz adjustable low-pass crossover, plus phase and bass-boost controls. The package also lists a wiring harness, which is helpful when planning the installation parts.
The limiting factor is the complete installed space. The 51HS10 manual calls for at least four inches of open ventilation for the amplifier and a structurally sound mounting location. That requirement can rule out a cavity that appears large enough for the metal case alone. Check seat movement, nearby mechanisms and access to the connections before buying.
Choose it when keeping the system compact matters more than building your own box. Confirm the full 51HS10 model number with the seller. Our link goes to Kicker’s exact model page because the Amazon listings we checked did not give us a sufficiently consistent model-and-photo match to recommend a specific listing.
2. Rockford Fosgate P300-10T: best powered truck-style enclosure
The Rockford Fosgate P300-10T combines a 10-inch driver, sealed enclosure and 300-watt RMS Class-D amplifier. It is the choice here when you have room for a wedge-shaped box and want the driver, enclosure and amplifier supplied as one system. Rockford designs the woofer’s impedance for its built-in amplifier, removing a separate amp-to-driver matching decision.
Measure for a box approximately 21.7 inches wide and 13.3 inches high, with a 4.8-inch top depth and 7.9-inch maximum depth. These figures match Rockford’s current product page and the P300-10T drawing in its manual. The taper is useful only if it matches the available space; the widest point, grille and cable access still have to clear the seat.
Speaker-level and RCA-level input options, an included remote level control and a variable 50–200 Hz low-pass crossover make this a practical integrated package. Quick-disconnect power and input connections are useful if you need occasional access to the occupied space. Have an installer plan the mounting so the enclosure remains secure in normal use.
The trade-off is bulk. It is far taller than the Hideaway, and Rockford’s manual strongly recommends at least one inch of air gap around the amplifier heatsink. Its larger RMS number is a power specification, not proof that it will sound better or deliver a particular increase in bass in your truck. Budget for the vehicle’s installation needs as well as the enclosure.
Check the complete model: P300-10T. The “T” matters when matching the enclosure dimensions; do not substitute another Punch enclosure from a similar-looking listing. The linked selection is the single P300-10T powered enclosure.
Rockford Fosgate P300-10T 10-Inch Powered Truck Subwoofer Enclosure
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3. Kicker CompRT 48CWRT104: best shallow driver for a custom box
The Kicker CompRT 48CWRT104 is the component choice for someone planning a separate amplifier and a made-to-fit enclosure. It is a 10-inch driver with dual 4-ohm voice coils, a 3-7/16-inch mounting depth and a 9-1/8-inch mounting cutout. Its appeal is the ability to design the box around your cab rather than finding space for a complete powered enclosure.
Kicker recommends a sealed enclosure and 400 watts RMS of amplifier power for this model. The published sealed-box range is 0.4–1.25 cubic feet. That is an enclosure design requirement, not the amount of empty space to measure outside a finished box. Give the installer the exact driver and the CompRT enclosure specifications before commissioning or buying a truck-specific enclosure.
The shallow mounting depth is the main advantage, but it is only one fit dimension. The frame’s outside diameter is 10-11/16 inches, larger than the mounting cutout. Check the dimension drawing for the complete profile, then allow for the enclosure walls, front clearance and any protective grille in the finished installation.
The extra choices are also its main drawback: you must select and budget for an amplifier, enclosure and installation. Dual 4-ohm voice coils do not mean every completed installation presents a 4-ohm load. Kicker’s manual documents 2-ohm or 8-ohm combined loads for this coil version; have your installer match the intended load to the amplifier’s supported impedance and RMS output.
Choose this driver when a custom enclosure is already part of the plan. Verify 48CWRT104, 10-inch, dual 4-ohm before ordering. The selected listing is for the individual driver; the powered enclosures above are more direct choices if you want the box and amplifier included.
How to choose a subwoofer for your truck
Measure the usable installation space
Start with your truck’s exact cab layout and the seat positions you use. Measure width, height and depth with the seat through its normal travel, then check mounting, wiring access and the manufacturer’s cooling clearance. Treat all three choices as candidates requiring a fit check. None is a vehicle-specific drop-in recommendation.
Keep three different measurements separate: the outside dimensions of a complete enclosure, the depth of a bare driver behind its mounting surface, and the enclosure’s required internal volume. A shallow driver can still need a box that will not fit. A low powered enclosure can still lack the ventilation space required by its manual.
Choose powered or separate components
The Hideaway and P300-10T supply their own amplifiers. The CompRT needs a separate one. Powered units simplify the list of components to match; a separate driver lets you plan the enclosure around a particular location. Compare the total installed cost, including the enclosure, amplifier, integration parts, wiring and labor that your chosen route requires.
Check the signal and electrical plan
Both powered choices accept high- and low-level signals, but those labels alone do not prove compatibility with every factory audio system. Have an installer verify the signal source and level against the exact model’s limits, along with the turn-on method. Do not buy an interface or converter until you know what the existing system and chosen subwoofer require.
Compare continuous/RMS specifications and distinguish an amplifier’s output from a driver’s recommended amplifier power. Rockford also recommends checking the battery and charging system’s capacity for the added load. A professional installation plan should cover suitable power protection, secure mounting and safe cable routing; use the exact equipment and vehicle documentation.
Frequently asked questions
What is the best subwoofer for a truck with very little room?
Start with the Kicker 51HS10 if its entire installation fits, including the required amplifier ventilation. If a complete powered enclosure will not fit, a custom box with the shallow CompRT may be worth investigating, but it still needs sufficient enclosure volume and a separate amplifier.
Will these subwoofers fit under my truck’s rear seat?
There is no universal answer. Compare your exact cab and seat layout with the enclosure dimensions or completed custom-box drawing. Include seat travel, connections, secure mounting and cooling space. “Truck-style” and “shallow” describe the product, not a verified fit for your truck.
Do I need to buy a separate amplifier?
The Kicker 51HS10 and Rockford P300-10T have built-in amplifiers. The Kicker 48CWRT104 is a component driver and needs an appropriate external amplifier and enclosure. Installation and integration parts still need to be planned for each option.
Is the dual 4-ohm CompRT a direct 4-ohm amplifier load?
Do not assume that. For this dual-voice-coil version, Kicker’s manual shows combined 2-ohm or 8-ohm loads. Choose the intended configuration and compatible amplifier with your installer before purchasing.
Should I choose a sealed or ported box for the CompRT?
For this space-focused shortlist, start with Kicker’s recommended sealed enclosure. The maker also supplies vented designs, but those require the specified port dimensions and additional allowance for port displacement. A box that merely fits the driver is not enough to establish a suitable enclosure.
