Sub 300 vs KEF Kube 8 MIE
The Kube 8 MIE's low-frequency extension is 34 Hz against the Sub 300's 31 Hz and its high-frequency extension 140 Hz against 200 Hz. Both share power @ 8ω (300W) and woofer (8").
AI-generated product photo — not official manufacturer imagery.
LoudspeakersSubwoofers
Estimated price (community-sourced)
$549
Around — community and catalog average, updates slowly
About the Sub 300
The Cambridge Audio MSX Sub 300 is a 300-watt powered subwoofer engineered to deliver deep, impactful bass while maintaining a compact footprint suitable for various room sizes. It features aerospace-grade aluminum construction with an 8-inch front-firing active driver combined with an 8-inch passive radiator to enhance mid-bass response. The subwoofer incorporates a sophisticated Digital Signal Processor (DSP) that enables exceptional bass performance from a small enclosure. With adjustable gain, phase, and crossover controls, the MSX Sub 300 integrates seamlessly into audio systems for customizable performance. The unit features auto on/off functionality activated by signal detection, gold-plated RCA inputs and outputs, and a rear-panel rotary volume control. Available in black or white high-gloss lacquer finish, it combines aesthetic appeal with functional audio performance.
Specifications
Transducer Specifications
Driver and acoustic performance characteristics
- Frequency Response
- 31 Hz - 200 Hz
- Power Handling
- 300W
Power Specifications
Amplification power output and characteristics
- Power @ 8Ω
- 300W @ 8Ω
- Amplifier Class
- D
Speaker Design
Driver configuration and enclosure design
- Driver Size
- 8"
- Driver Count
- 2
- Enclosure Type
- passive_radiator
- Crossover Frequency
- 200 Hz
Physical Dimensions
Size, weight, and appearance
- Dimensions
- 266 × 311 × 278 mm (W × H × D)
- Weight
- 7.5 kg (17 lbs)
Key Specifications
Power: 300W
Frequency: 31-200 Hz
Specifications are community-contributed and may not be accurate or complete. Verify all details with the manufacturer before making purchasing decisions. Terms & Conditions