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When it comes to adding powerful bass to your home theater or music system, Klipsch offers two compelling but different approaches with the Flexus SUB 100 ($239) and the Reference R-120SW ($215). Let's dive into how these subwoofers compare and which might be right for your setup.
Subwoofers have evolved significantly in recent years, with manufacturers focusing on both raw performance and smart integration features. Modern subs need to handle everything from movie explosions to subtle musical bass lines while fitting into increasingly sophisticated home entertainment systems.
The key factors to consider are:
The Flexus SUB 100 represents Klipsch's newer approach, developed in partnership with Onkyo. It emphasizes wireless connectivity and smart features, using a 10-inch driver powered by an 80-watt amplifier. The sealed cabinet design (meaning no port) typically offers tighter, more controlled bass at the expense of maximum output.
In contrast, the R-120SW follows a more traditional path with its larger 12-inch driver and 200-watt amplifier. Its ported design helps it achieve higher output levels and deeper bass extension, though it requires more careful placement due to the rear port.
The numbers tell an interesting story here. The R-120SW's 116dB maximum output versus the Flexus's 103.7dB might not seem huge on paper, but this 12dB difference is actually quite significant - it means the R-120SW can play about four times as loud. This becomes particularly noticeable during dynamic movie scenes where that extra headroom prevents distortion.
Both subwoofers dig deep, with the R-120SW reaching 29Hz and the Flexus hitting 26Hz. However, the way they handle these low frequencies differs considerably:
This is where the products diverge significantly. The Flexus SUB 100 shines with its modern features:
The R-120SW takes a traditional approach:
In actual use, these differences manifest in interesting ways. The R-120SW's additional power and larger driver make it particularly impressive with action movies and gaming. When a spaceship explodes or a dinosaur footstep hits, you feel it in your chest. The ported design helps it move more air, creating that visceral impact home theater enthusiasts crave.
The Flexus SUB 100, while not as powerful, offers excellent precision. Its sealed design and advanced processing help it blend more seamlessly with main speakers, particularly beneficial for music listening. The wireless capability and app control make it much easier to experiment with placement without running new cables.
Despite its higher power and larger driver, the R-120SW actually costs less at $215 compared to the Flexus's $239. This price difference reflects the additional cost of wireless technology and modern integration features rather than raw performance capabilities.
The value equation depends heavily on your specific needs:
The wireless capability of the Flexus makes it significantly easier to place in challenging rooms. You can experiment with different positions without worrying about cable management. The dual-sub capability also allows for more sophisticated setups to combat room modes (acoustic issues that cause uneven bass response).
The R-120SW requires more planning due to its wired connection and rear port, which needs some space to breathe. However, its higher output means it might perform better from non-ideal positions when necessary.
The Flexus platform suggests ongoing development with potential firmware updates and feature additions through the app. The R-120SW, being a more traditional design, is what it is - but that simplicity can also be an advantage in terms of long-term reliability.
Choose the Flexus SUB 100 if:
Choose the R-120SW if:
Both subwoofers represent quality options in their respective approaches. The R-120SW delivers more raw performance for the money, while the Flexus trades some output capability for modern conveniences and flexible placement options. Your specific room constraints, existing equipment, and performance priorities should guide the final choice.
Klipsch Flexus SUB 100 ($239) | Klipsch Reference R-120SW ($215) |
---|---|
Driver Size - Larger drivers generally produce deeper bass | |
10" paper cone woofer | 12" spun-copper IMG woofer |
Amplifier Power - Higher power enables greater volume and headroom | |
80W RMS / 160W Peak | 200W RMS / 400W Peak |
Maximum Output - Determines overall volume capability | |
103.7 dB | 116 dB |
Frequency Response - Shows bass extension capability | |
26-250 Hz (±3dB) | 29-120 Hz (±3dB) |
Enclosure Design - Affects bass character and placement flexibility | |
Sealed (acoustic suspension) | Bass-reflex with rear port |
Connectivity Options - Important for system integration | |
Wireless + Mono RCA | Line level/LFE RCA only |
Smart Features - Affects ease of use and control | |
App control, dual sub capability, wireless pairing | Manual controls only |
Cabinet Dimensions - Consider room placement | |
13.2" x 13.3" x 13.9" | 16.5" x 14" x 19.2" |
Weight - Affects mobility and installation | |
20.7 lbs | 31 lbs |
Special Features - Added value considerations | |
Wireless connection, app control, automatic integration with Klipsch soundbars | Variable low-pass crossover, phase control, auto power |
The Klipsch Reference R-120SW ($215) delivers more powerful home theater performance with its larger 12" driver and 200W amplifier. While the Flexus SUB 100 ($239) is capable, the R-120SW provides deeper bass impact for movies.
The R-120SW is significantly more powerful with 200W RMS compared to the Flexus SUB 100's 80W RMS. This results in higher maximum output (116dB vs 103.7dB).
If cable routing is difficult or you want clean installation, choose the wireless Flexus SUB 100. If cables aren't an issue, the wired R-120SW offers better performance for the price.
Both perform well with music, but the Flexus SUB 100 sealed design offers tighter bass control. The R-120SW provides more impact but may require more careful placement due to its ported design.
Only the Flexus SUB 100 offers app control through the Klipsch Connect Plus app. The R-120SW uses traditional manual controls.
The Flexus SUB 100 is more compact and easier to place with its wireless capability. The R-120SW requires more space and consideration for its rear port.
The R-120SW works with any receiver using standard RCA connections. The Flexus SUB 100 works wirelessly with Klipsch Flexus soundbars or via RCA with other systems.
The R-120SW at $215 offers better performance per dollar. The Flexus SUB 100 costs more at $239 but includes wireless capability and smart features.
The Flexus SUB 100 specifically supports dual subwoofer pairing. The R-120SW can be used in pairs but requires receiver support for dual subwoofers.
The wireless Flexus SUB 100 offers easier setup with automatic pairing and app control. The R-120SW requires manual connection and adjustment.
The Flexus SUB 100 is more flexible in placement due to its sealed design and wireless capability. The R-120SW needs space behind it for the port and consideration for cable routing.
Both reach similar low frequencies, with the Flexus SUB 100 reaching 26Hz and the R-120SW reaching 29Hz, but the R-120SW delivers these frequencies with more impact due to its larger driver and higher power.
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