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!
Features
- 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
Technical data
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 |
| 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. |
Note: The enclosure should always be filled with appropriate damping material.
Scope of delivery
2 x Midrange speaker HELIX S 3M
2 x Grille
1 x Data sheet
1 x Mounting pattern
