Helix S 3M - 75mm Midrange
✓ Magnet: Neodymium
✓ FQ-Range: 400 - 6000Hz
✓ SPL: 86dB
✓ Power: 75 Watt RMS
✓ Impedance: 4 Ohm
✓ Outer diameter: 75mm
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HELIX S 3M
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!
✓ 3” / 75 mm cone midrange speaker with novel basaltfiberpaper compound cone – a perfect combination of lowest weight, high stiffness and perfect inner damping
✓ Highly efficient, compact neodymium magnet system for linear drive and minimum distortion
✓ Low-resonant basket made from glassfiber reinforced plastic with optimized voice coil cooling for high power handling
✓ Grille included
|Power RMS / max.||P||75 / 150 Watts|
(highpass > 400 Hz at 24 dB/Oct.)
|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|
|Equivalent air volume||Vas||0.57 L|
|Force factor||B*I||4.6 Tm|
|Sensitivity 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.
Scope of delivery
✓ 2 x Midrange speaker Helix S 3M
✓ 2 x Grille
✓ 1 x Data sheet
✓ 1 x Mounting pattern
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