A cone midrange driver in an elegant design, trimmed for maximum sound quality – and thus the perfect addition to any fully active 3-way speaker system.

The highly rigid membrane consists of a novel basalt fiber-paper compound. An ideal combination to ensure clear and precise sound even at high volumes  In addition to maximum uncoloured mid-range reproduction, the S 3M also offers extremely low distortion thanks to the linear neodymium magnet system.

The dream team is the combination with the S 1T tweeter and a S 6B or S 4B woofer. Driven by a power amplifier from Audiotec Fischer, the S loudspeakers perform at their best and provide the perfect basis for absolute top sound systems!

Specifications

Power RMS / max. - P - 75 / 150 Watts (highpass > 400 Hz at 24 dB/Oct.)

Impedance - Z- 4 Ω

DC resistance - Re - 3.2 Ω

Frequency response - 400 Hz - 6,000 Hz

Resonance frequency - Fs - 130 Hz

Mechanical Q factor - Qms - 4.47

Electrical Q factor - Qes - 0.48

Total Q factor - Qts - 0.43

Compliance - Cms - 396 µm/N

Equivalent air volume - Vas - 0.57 L

Force factor - B*I - 4.6 Tm

Efficiency 1 W / 1 m - SPL - 86 dB

Cone area - Sd - 32 cm²

Moving mass - Mms - 3.8 g

Cone material - Basalt-fiber-paper compound

Mechanical resistance - Rms - 0.69 kg/s

Voice coil diameter - ø - 25 mm

Voice coil winding height - 8 mm

Max. linear excursion - Xmax - +/- 2 mm

Outer diameter - ø - 90 mm / 3.54"

Installation diameter - ø - 73 mm / 2.87"

Installation depth - 37 mm / 1.46"

Recommended enclosure volumes  

Sealed box with minimum 200 ml net volume  

Net volumes - Recommended DSP / amplifier settings

0.2 liter (System resonance: 230 Hz) -
Crossover frequency: 500 Hz
Min. filter slope: 12 dB/Oct.

0.4 liter (System resonance: 190 Hz) -
Crossover frequency: 450 Hz
Min. filter slope: 18 dB/Oct.

0.6 liter (System resonance: 170 Hz) -
Crossover frequency: 400 Hz
Min. filter slope: 24 dB/Oct.

Note: The enclosure should always be filled with appropriate damping material.