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Ideal for reviving passive subwoofers
The M03 brought my old passive Canton Plus C Subwoofer back to the Orchestra. In passive mode it was ways too bassy to play nicely with my KEF KHT2001 in a small room (~12qm²). Together with the Fosi M03 (and a small modification: I removed the crossover and soldered the 2 coils of the woofer in serial so it has 8 Ohm) Bass is now extened to 30 Hz (measured with Umik Mic and REW) and fills nicely the absent bass and upper bass. Highly recommended for that purpose.
This review has been posted for FOSI AUDIO M03 Class D Amplifier Mono + Subwoofer TPA3255 120W 4 ohm The M03 brought my old passive Canton Plus C Subwoofer back to the Orchestra. In passive mode it was ways too bassy to play nicely with my KEF KHT2001 in a small room (~12qm²). Together with the Fosi M03 (and a small modification: I removed the crossover and soldered the 2 coils of the woofer in serial so it has 8 Ohm) Bass is now extened to 30 Hz (measured with Umik Mic and REW) and fills nicely the absent bass and upper bass. Highly recommended for that purpose.
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