The Cambridge Audio MSX Sub 300 is the larger active subwoofer in the MSX range, pairing a 300W amplifier with an 8-inch active driver and a matching 8-inch passive radiator. Measuring 266 x 315 x 278mm and weighing 7.5kg, it stays reasonably compact while extending bass down to 31Hz (-6dB) for deeper, more authoritative low frequencies.
Why This Model Matters
The step up to an 8-inch driver and a 300W amplifier gives the Sub 300 more headroom and lower extension than the Sub 200, making it a better fit for larger rooms or listeners who want more physical impact from movies and music. Digital Signal Processing keeps the output tight and clean, while a variable 50-200Hz crossover, 0-180 degree phase control and auto-on functionality make it straightforward to integrate and live with.
Highlights
300W amplifier with DSP for deep, controlled bass
1 x 8-inch active driver plus 1 x 8-inch passive radiator
Frequency response down to 31Hz (-6dB)
Variable 50-200Hz crossover and 0-180 degree phase control
Low-level RCA input with RCA pass-through output
Auto-on functionality in a compact 266 x 315 x 278mm cabinet
Who It's For
The MSX Sub 300 is for listeners with larger rooms or a taste for deeper, more powerful bass who still want a manageable enclosure. It partners seamlessly with the MSX 10 and MSX 20 satellites and slots into stereo or home-cinema systems built around any main speakers that need a confident, extended low end.
