JBL Studio 630 vs KEF Kube 15 MIE Subwoofer – Key Differences & Best Choice (2026)

ALERT

Brand	JBL	KEF
Model No	Studio 630	Kube 15 MIE Subwoofer
Wired / Wireless	Home Theatre Speaker Specification	Home Theatre Speaker Specification
Driver Type	Dynamic	Dynamic

Driver Diameter	165 mm PolyPlas Low-Frequency Woofer 25 mm High Frequency Compression Driver With High Definition Imaging Waveguide	380 mm
Impedance	6 Ohms	NA
Sensitivity	85dB @ 1M, 2.83V	116dB
Frequency Response	Crossover Frequencies : 1.9KHz Frequency Response : 45Hz - 40KHz	Frequency Response ( Â±3dB ) : 20Hz â€“ 140Hz Variable Low Pass Filter : 40Hz â€“ 140Hz, LFE
Maximum Power Input	NA	AC 100 - 240V, 50/60 Hz
Maximum Power Output	150 W ( RMS )	300 W ( RMS ) Amplifier Type : Class D
Signal to Noise Ratio	NA	116dB

Noise Cancelling
Aux Connectivity	No	No
Weight	9.02 Kg	27.5 Kg
Dimensions	230 mm X 280 mm X 372 mm	Subwoofer : 519 mm X 500 mm X 515 mm
Available Colors	Black, Brown	Black
Accessories	JBL Studio 630 Bookshelf Loudspeaker 8 X Feet Pads 1 X Warranty Card 1 X Ownerâ€™s Manual	KEF Kube 15 MIE Subwoofer Power Cord Euroblock Speaker Level Connector User Manual & Warranty Information
Other Features	Bass-Reflex via Rear-Firing Tuned Port. New, Appealing Form Factor : Our speaker system is pleasing to the eyes, making it a perfect match for your home dÃ©cor. High-Quality Sounding Compression Drivers : Compression drivers that add best-in-class clarity and detail to your sound experience. High-Definition Imaging Waveguide With High-Frequency Compression Driver : High-quality home audio helps deliver a live-concert sound directly to your home. Top-Graded PolyPlas Cones : For those who prefer their home stereo and home theater to sound precisely like it would sound at a live concert or movie theater.	Powerful 15 Inch woofer with 300 Watt Class D Amplifier. Kube offers versatile connection options, including KEF Smart Connect and speaker level inputs, making connecting into any system a breeze. 3 room position EQ options - The intuitive preset options ensure excellent performance from Kube no matter where in the room it is placed. The Kube features a front-firing long throw driver with a large cone area and high excursion, delivering higher output at lower frequencies. Its efficient and cool-running 300W Class D RMS amplifier further enhances performance. KEFâ€˜s proprietary DSP (Digital Signal Processing) algorithms ensure that every component of the subwoofer works in perfect harmony. Features such as iBX Intelligent Bass Extension provides even deeper and precise bass at any listening level.
	Compare JBL Studio 630 with: LG S90TR Samsung HW-LST70T JBL HDI-1200P JBL Home Theater Basic Bundle ( Espresso ) JBL Home Theater Basic Bundle ( Latte )	Compare KEF Kube 15 MIE Subwoofer with: KEF R2 Meta Bowers & Wilkins 606 S3 Samsung HW-Q800F/XU Samsung HW-Q900F Samsung HW-QS750F/XU

Both models are designed for movies, music, and gaming, delivering a cinematic experience at home. JBL Studio 630 and KEF Kube 15 MIE Subwoofer are feature-rich speaker setups offering a combination of powerful sound, surround experience, and connectivity options. Support for technologies like Dolby Atmos and DTS enhances the depth and realism of sound. Differences in power output, channel configuration, and audio technologies can impact overall sound performance. Modern connectivity options make these systems flexible for different setups and devices.

Verdict: Both systems are competitive, and the right option depends on your room size, usage, and feature requirements.

Top Differences

Sound Output: 150W vs 300W
Channels: 150 vs 300
Frequency Response: Crossover Frequencies : 1.9KHz Frequency Response : 45Hz - 40KHz vs Frequency Response ( Â±3dB ) : 20Hz â€“ 140Hz Variable Low Pass Filter : 40Hz â€“ 140Hz, LFE
Subwoofer Size: 165 mm vs 380 mm

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Top Differences