Almost spherical.
For perfect spatial acoustics.
The monitor loudspeakers can be placed separately from the bass loudspeakers to enable the audio system to create outstanding immersive sound. Leaving room for a smooth frequency response across seven octaves.
Design Criteria
Spatial resolution at its best
Monitor M15 starts at 300 Hz in full space
Correction by design
Phase and angle correction of midrange driver and high frequency horn tweeter by mechanical design
No secondary acoustic emissions
high strength enclosure—through loudspeaker enclosures in an edgeless milled aluminum shape. Side walls with dished vertical grooves to disperse secondary acoustic reflections.
Highest quality, high efficiency professional audio drivers
No audible frequency modulation – small excursion of driver
Fused Loudspeakers
Fused loudspeakers with power limit circuitry to prevent overload damage
Passive crossovers with third-order filters and impedance linearization
Lowest count of film capacitors and shielded inductors, at highest quality – Signal latency below Blauert & Laws criterion with smooth course
Team player. For optimized phase response.
Bass B17 in half space, separated at 300 Hz with Monitor M15 in full space – freedom of location distance between B17 / M15 / wall.

M15 MONITOR LOUDSPEAKER
2-way passive loudspeaker in an edgeless milled aluminum enclosure with a stainless steel stand
- Dimensions (W x H x D): 38 x 133 x 54 cm
- Frequency range: 300 Hz to 22 kHz +/- 2 dB for an average SPL of one third
- Efficiency: > 95 dB/W/m
- Max. SPL : 112 dB/m
- Impedance: 8 ohm
For an interference-free playback of around 300 Hz in the transition zone, the enclosure emission axes of both the monitor and the bass are at the same height despite being in separate enclosures.