B2 Audio 2ft 4-Ohm Rampage RC2 Subwoofer for RC Cars - Compact Power

In this review of the B2 Audio 2' 4-Ohm Rampage RC2 Subwoofer for RC Cars, the bottom line is simple: it brings surprising low-end punch to 1/10 scale RC vehicles without taking up much space. The reviewer found it best for hobbyists who want a realistic bass presence on scale rigs or small enclosed bodies, and the single biggest reason to buy is the authentic design that mirrors full-sized B2 components in a compact package. Installation is straightforward for models with the right cut-out, and sound quality stands out given its size and 30W RMS rating.

Key Features

• Authentic B2 Audio Design: The cast aluminum frame and pressed paper cone provide durable construction and a natural, musical tone that mirrors larger B2 subwoofers.
• Compact Size for RC Cars: With a 2.24 in overall diameter and 2.32 in mounting depth, this driver fits neatly into many 1/10 scale bodies and tight enclosures.
• 30W RMS Power Output: The 4-ohm impedance and 30W RMS rating deliver impactful bass that belies the small footprint, suitable for simulated low-frequency effects.
• Seamless Installation: A cut-out diameter of 1.95 in and a 0.8 in voice coil size make for precise mounting and straightforward panel work in compatible models.
• Realistic Audio Experience: Attention to detail in materials and design provides a convincing subwoofer character for scale audio builds and demo rigs.

Who It's For

The Rampage RC2 is aimed at RC hobbyists, scale builders, and model audio enthusiasts who want to add authentic-sounding bass to their 1/10 vehicles without major modifications. It is particularly useful for drivers who mount speakers in enclosed shells or custom speaker bays where space is limited but a believable low end is desired.

Users who need extreme SPL for outdoor events or those building full vehicle PA systems should look elsewhere, since this subwoofer is designed for realistic sound in small spaces rather than concert-level output. Also, confirm compatibility with your model's mounting depth and cut-out before purchasing.

Pros & Cons

Pros

• Authentic materials and cast aluminum frame deliver durability and a musical character.
• Compact dimensions make it easy to install in many 1/10 scale vehicles and tight enclosures.
• 30W RMS into 4 ohms produces more bass than expected for the size, improving realism.

Cons

• Several customers note the price feels high for a small driver, making value a consideration.
• Not suitable for users needing massive SPL or deep subsonic extension beyond its size profile.

Specifications

Brand	B2 Audio
Diameter (overall)	2.24 in
Mounting depth	2.32 in
Cut-out diameter	1.95 in
Voice coil size	0.8 in
Power	30W RMS
Impedance	4 ohm

Our Verdict

The B2 Audio Rampage RC2 is a well-built, compact subwoofer that delivers realistic bass for 1/10 scale RC vehicles and small enclosures. Hobbyists seeking improved low-end character and authentic materials will appreciate the design and sound; budget-conscious buyers or those needing extreme volume should weigh the cost against their needs.

Frequently Asked Questions

Will this fit in my 1/10 RC body?
Check that your available cut-out and mounting depth match the listed 1.95 in cut-out diameter and 2.32 in mounting depth for a precise fit.

How much power does it need?
The driver is rated at 30W RMS into 4 ohms; pairing with an amplifier matched to that power and impedance yields the best results.

Is the sound realistic for scale builds?
Yes, the pressed paper cone and foam surround produce a convincing bass character that emulates larger B2 subwoofers in miniature form.