Kordeo and Fredk,

The M80s on their own in a room do a fine job of pipe organ fundamentals to below 30 Hz. They run out of steam around 27 Hz. I'm a pipe organ (also Wurlitzer theater organ) enthusiast.

Adding a powerful subwoofer like the Axiom EP500 will bring additional impact and extension to below 20 Hz.

Regards,
Alan

Alan Lofft,
Axiom Resident Expert (Retired)