Prodigy Audio NB3 Shallow Mount Subwoofers
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Shop Prodigy Audio NB3 Series shallow mount subwoofers at Audio Sellerz for truck boxes, under-seat systems, behind-seat enclosures and other car audio builds where mounting depth is limited. The NB3 lineup gives you serious daily-driver bass capability without requiring the depth of a traditional full-size subwoofer.
The current NB3 Series includes a 10-inch 600-watt RMS dual 4-ohm subwoofer and a 12-inch 800-watt RMS dual 4-ohm subwoofer. Both models are designed around shallow installation depth while still using substantial motor structures, high-temperature voice coils and purpose-built suspension systems.
Want to compare the NB3 with the rest of Prodigy's subwoofer lineup? Browse all Prodigy Audio subwoofers or return to the complete Prodigy Audio collection.
Prodigy Audio NB3 Series
The NB3 Series fills an important gap between compact installation space and useful power handling. These shallow subwoofers are especially useful when a normal-depth woofer simply will not fit where you need the enclosure.
- NB3-10D4: 10-inch shallow mount subwoofer, 600 watts RMS, dual 4 ohm
- NB3-12D4: 12-inch shallow mount subwoofer, 800 watts RMS, dual 4 ohm
Both models use a dual 4-ohm voice-coil configuration, giving installers useful wiring options for single and dual-subwoofer systems.
Shallow Mount Subwoofers for Trucks
Truck audio is one of the biggest reasons shallow subwoofers exist.
Many pickup trucks simply do not have enough room behind or underneath the seats for a conventional full-depth woofer and enclosure. The NB3 Series is designed specifically for installations where every inch matters.
Common NB3 applications include:
- Single-cab truck subwoofer systems
- Extended-cab truck boxes
- Crew-cab under-seat enclosures
- Behind-seat truck enclosures
- Compact SUV installations
- Small trunk systems
- Custom center-console subwoofer enclosures
- Other limited-depth car audio builds
Prodigy NB3-10D4 10-Inch Shallow Mount Subwoofer
The Prodigy Audio NB3-10D4 is a 10-inch shallow mount subwoofer rated at 600 watts RMS with dual 4-ohm voice coils.
One of its biggest advantages is installation depth. The NB3-10D4 has a listed mounting depth of only 3 inches, making it an excellent candidate for enclosures that would never accommodate many traditional 10-inch subwoofers.
The 10-inch NB3 also uses a 2.5-inch high-temperature four-layer copper voice coil and a substantial ferrite motor assembly despite its shallow profile.
NB3-10D4 Key Specifications
- 10-inch subwoofer
- 600 watts RMS
- Dual 4-ohm voice coils
- 3-inch mounting depth
- 9 3/16-inch cutout diameter
- 10 3/8-inch overall diameter
- 11 mm one-way linear Xmax at 70% BL
- 2.5-inch four-layer copper voice coil
- Black aluminum voice-coil former
- Treated paper cone
- Rubber surround
- Center-pole ventilation
- Steel frame
- Chrome push terminals
- Stitched flat tinsel leads
Prodigy lists a sealed enclosure range of approximately 0.75 to 1.0 cubic foot for the NB3-10D4.
Compare additional 10-inch car audio subwoofers if you are deciding between shallow and traditional woofer designs.
Prodigy NB3-12D4 12-Inch Shallow Mount Subwoofer
The Prodigy Audio NB3-12D4 steps up to a 12-inch cone and 800 watts RMS while maintaining the shallow-mount design that defines the NB3 Series.
Its listed mounting depth is only 3 3/8 inches, which is exceptionally useful when you want the cone area of a 12-inch subwoofer but cannot fit the depth of a conventional woofer.
The NB3-12D4 uses a larger 3-inch high-temperature four-layer copper voice coil and an 80-ounce ferrite motor while maintaining the compact installation depth.
NB3-12D4 Key Specifications
- 12-inch subwoofer
- 800 watts RMS
- Dual 4-ohm voice coils
- 3 3/8-inch mounting depth
- 10 7/8-inch cutout diameter
- 12 1/4-inch overall diameter
- 11 mm one-way linear Xmax at 70% BL
- 3-inch four-layer copper voice coil
- Black aluminum voice-coil former
- Treated paper cone
- Rubber surround
- Center-pole ventilation
- Steel frame
- Chrome push terminals
- Stitched flat tinsel leads
Prodigy lists a sealed enclosure range of approximately 1.0 to 1.2 cubic feet for the NB3-12D4.
Compare more 12-inch car audio subwoofers if you are comparing shallow and full-depth options.
NB3 10-Inch vs NB3 12-Inch
Both NB3 subwoofers are built around the same basic idea: make strong bass possible when installation depth is limited.
Choose the NB3 10-Inch If:
- You have extremely limited enclosure space
- You want the shallowest NB3 option
- You need a truck or behind-seat subwoofer
- A 600-watt RMS woofer matches your amplifier and system goals
- You want a smaller enclosure
Choose the NB3 12-Inch If:
- You have enough surface area for a 12-inch enclosure
- You want more cone area
- You want the 800-watt RMS NB3 option
- You still need an extremely shallow mounting depth
- You want stronger bass potential without giving up the space required by a traditional deep woofer
Shallow Mount vs Traditional Subwoofer
A shallow mount subwoofer is designed to fit installations where conventional subwoofer depth becomes a problem.
That does not mean every vehicle should automatically use a shallow woofer.
A traditional full-depth subwoofer may offer more options when enclosure space is not a concern. A shallow subwoofer becomes especially valuable when physical installation depth is the limiting factor.
Choose an NB3 when the vehicle needs:
- Reduced mounting depth
- A compact enclosure
- Under-seat installation
- Behind-seat installation
- More usable passenger or cargo space
Under-Seat Subwoofer Systems
An under-seat subwoofer installation can be an excellent way to add bass without filling the trunk or cargo area with a large enclosure.
Pickup trucks are especially well suited to this style of system because space beneath the rear seat can often be used for a custom or vehicle-specific enclosure.
Before building an under-seat system, measure:
- Available height beneath the seat
- Subwoofer mounting depth
- Enclosure material thickness
- Magnet and motor clearance
- Cone and surround clearance
- Seat movement
- Available airspace
Do not assume that a shallow woofer automatically fits every under-seat box. The complete enclosure dimensions still matter.
Behind-Seat Truck Subwoofers
Single-cab and some extended-cab trucks may have very little room between the seat and rear wall.
This is exactly the type of installation where the NB3 Series can make sense. A woofer with only around 3 inches of mounting depth provides far more enclosure-design flexibility than many full-depth subwoofers.
Remember that the box still needs proper internal volume and adequate clearance for the cone and motor.
Small Enclosures and Real Bass
Limited space does not mean you have to give up on a real aftermarket subwoofer system.
The NB3 Series is designed to work in compact sealed or ported applications while providing considerably more capability than a basic factory woofer.
The key is designing the enclosure around the exact woofer instead of simply making the smallest box that will physically fit.
Sealed NB3 Subwoofer Enclosures
A sealed enclosure can work especially well when space is limited because the design is generally simpler and does not require the additional space consumed by a port.
Prodigy lists sealed enclosure recommendations for both NB3 models:
- NB3-10D4: approximately 0.75 to 1.0 cubic foot
- NB3-12D4: approximately 1.0 to 1.2 cubic feet
Remember that enclosure volume needs to account for the space displaced by the woofer and any internal bracing.
Ported NB3 Subwoofer Enclosures
The NB3 Series can also be used in properly designed ported enclosures.
A ported box requires more planning because net airspace, port area, port length and tuning frequency all affect the finished response.
Do not use a random ported box simply because the woofer fits the cutout.
Read our subwoofer box and enclosure guide if you need help understanding sealed vs ported designs.
Dual 4-Ohm Voice Coils
Both current NB3 models use dual 4-ohm voice coils.
A single dual 4-ohm woofer can commonly be wired to:
- 2 ohms with the coils wired in parallel
- 8 ohms with the coils wired in series
Two matching dual 4-ohm subwoofers can commonly be wired to useful final loads such as 1 ohm or 4 ohms depending on the configuration.
Use our subwoofer wiring diagrams and ohm-load guide before choosing your amplifier.
Match the NB3 With the Right Amplifier
Start with the RMS rating of the exact subwoofer:
- NB3-10D4: 600 watts RMS
- NB3-12D4: 800 watts RMS
Then determine the final impedance of the completed subwoofer system and choose an amplifier that provides appropriate RMS output at that load.
If you want to keep the system within the same brand, browse Prodigy Audio amplifiers.
Single NB3 Subwoofer Systems
A single NB3 can make an excellent compact daily-driver system.
A single-sub build keeps enclosure size and amplifier requirements more manageable while still adding substantially more bass than most factory audio systems.
The dual 4-ohm configuration also allows a single NB3 to be wired to a 2-ohm final load, which works well with many common monoblock amplifier configurations.
Dual NB3 Subwoofer Systems
Two matching NB3 subwoofers increase total cone area and output potential while still taking advantage of the series' shallow mounting depth.
Dual shallow 10s or 12s can be especially useful beneath the rear seat of a pickup where there is plenty of width but very little vertical depth.
Before ordering two subs, verify:
- Total available enclosure volume
- Final impedance
- Amplifier RMS output
- Power-wire requirements
- Electrical-system capability
- Physical clearance beneath or behind the seats
NB2 vs NB3 vs NB5
Prodigy offers different subwoofer families for different system goals.
- NB2 Series: affordable moderate-power daily-driver bass.
- NB3 Series: shallow mount bass for trucks and limited-depth installations.
- NB5 Series: higher-power systems with more aggressive motor and suspension designs.
The NB3 is the clear choice when mounting depth is one of the biggest limitations in your build.
Compare the complete Prodigy Audio NB2, NB3 and NB5 subwoofer lineup before choosing your series.
Complete Your NB3 Bass System
A shallow subwoofer still needs the same supporting equipment as any other properly designed bass system.
Your complete installation may require:
- A properly matched monoblock amplifier
- A sealed or ported enclosure designed around the woofer
- Power and ground wire
- Speaker wire
- Fuse protection
- Signal wiring or factory-radio integration
- A strong amplifier ground
- Correct gain and crossover settings
Shop car audio amplifier wiring kits and car audio power, ground and speaker wire when completing your NB3 installation.
Prodigy Audio NB3 FAQ
Is the Prodigy NB3 a shallow mount subwoofer?
Yes. The NB3 Series is specifically designed for limited-depth installations and currently includes shallow mount 10-inch and 12-inch models.
How deep is the Prodigy NB3 10-inch subwoofer?
The NB3-10D4 has a listed mounting depth of approximately 3 inches.
How deep is the Prodigy NB3 12-inch subwoofer?
The NB3-12D4 has a listed mounting depth of approximately 3 3/8 inches.
How much power does the Prodigy NB3 10 handle?
The NB3-10D4 is rated at 600 watts RMS.
How much power does the Prodigy NB3 12 handle?
The NB3-12D4 is rated at 800 watts RMS.
What ohm are Prodigy NB3 subwoofers?
The current NB3-10D4 and NB3-12D4 both use dual 4-ohm voice coils.
Is the NB3 good for a truck?
Yes. The shallow mounting depth makes the NB3 especially useful for truck systems where subwoofers need to fit beneath or behind seats.
Can I put an NB3 underneath a truck seat?
Potentially, yes. Measure the available space, enclosure thickness, woofer mounting depth, seat clearance and required enclosure volume before ordering. Vehicle and enclosure designs vary.
Can I run two Prodigy NB3 subwoofers?
Yes. Two matching NB3 subwoofers can be used when the enclosure provides sufficient airspace, the final impedance is compatible with the amplifier and the electrical system can support the amplifier.
Can the NB3 be used in a sealed box?
Yes. Prodigy provides sealed enclosure recommendations for both current NB3 models.
Can the NB3 be used in a ported box?
Yes. The NB3 Series can also be used in properly designed ported enclosures. Port area, tuning and net internal volume should be designed around the exact woofer.
What is the difference between NB2 and NB3?
NB2 is Prodigy's moderate-power starting series, while NB3 is specifically focused on shallow mounting depth and compact installations while offering higher RMS power handling.
What is the difference between NB3 and NB5?
NB3 prioritizes shallow installation depth. NB5 is designed for higher-power and higher-output systems where additional mounting depth and electrical demand are acceptable.
Why Buy Prodigy Audio NB3 Subwoofers from Audio Sellerz?
Audio Sellerz works with real car audio systems, including truck boxes, compact bass systems, custom enclosures, amplifier installations and high-output builds.
We understand that sometimes the biggest challenge is not power—it is simply finding a subwoofer that physically fits the vehicle.
The Prodigy NB3 Series gives builders a useful solution when they need serious aftermarket bass from a shallow enclosure without giving up an entire truck cab or cargo area.
Browse the NB3 models above or compare the complete Prodigy Audio subwoofer lineup to find the series that makes the most sense for your build.
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