P 3M

Even the most discerning of sound freaks will undoubtedly has their own ideas about the ideal... more

Even the most discerning of sound freaks will undoubtedly has their own ideas about the ideal combination of loudspeakers. That´s why Audiotec Fischer also offers all of the loudspeakers in the P-series for purchase as an individual item, this is the ideal solution for any builder who wants to build a fully active system. In combination with the widely varied configuration options of all the HELIX amplifiers, the possibilities are virtually endless...

3” / 75 mm cone midrange speaker with novel glassfiber-paper compound cone for maximum... more
  • 3” / 75 mm cone midrange speaker with novel glassfiber-paper compound cone for maximum stiffness combined with lowest moving mass 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... more
Power RMS / max.  P 75 / 150 Watts
(highpass > 400 Hz at 24 dB/Oct.)
Impedance  Z 4 Ω
DC resistance  Re 3.3 Ω
Resonance frequency  Fs 130 Hz
Mechanical Q factor  Qms 4.72
Electrical Q factor  Qes 0.50
Total Q factor Qts 0.45
Compliance Cms µm/N
Equivalent air volume Vas 0.54 L
Force factor  B*I 4.4 Tm
Efficiency 1 W / 1 m SPL 86 dB
Cone area  Sd 30 cm²
Moving mass  Mms 3.7 g
Cone material   Glassfiber-paper compound cone
Mechanical resistance  Rms 0.63 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.

2 x Midrange speaker HELIX P 3M 2 x Grille more

2 x Midrange speaker HELIX P 3M
2 x Grille