monacor SPX-31M


Original price was: 299,0 kr.Current price is: 275,0 kr. 275,0 kr

Hi-fi full range speaker

3 in stock (can be backordered)



Hi-fi full range speaker, 20 W, 8 Ω
  • Excellent sound quality
  • High-quality paper cone
  • Aluminium phase plug for optimising radiation pattern
  • Rear-ventilated centering spider
  • Shielded magnet system
  • Application in small speakers or satellite systems
  • Ideally suited for application in FAST speakers (full range and subwoofer technology)

Additional information

Weight 0,49 kg


Technical Specifications

Impedance (Z) 8 Ω
Frequency range f3-20,000 Hz
Resonant frequency (fs) 110 Hz
Power rating (RMS) 20 W
Peak music power output (MAX) 40 W
Sensitivity 86 dB/W/m
Suspension compl. (Cms) 0.92 mm/N
Moving mass (Mms) 1.9 g
Mech. Q factor (Qms) 3.707
Electr. Q factor (Qes) 0.69
Total Q factor (Qts) 0.58
Equivalent volume (Vas) 1.3 l
DC resistance (Re) 6.4 Ω
Force factor (BxL) 3.64 Tm
Voice coil induct. (Le) 0.18 mH
Voice coil diameter Ø 20 mm
Voice coil former Kapton
Linear excursion (XMAX) ± 1.1 mm
Eff. cone area (Sd) 32 cm2
Magnet weight 119 g
Magnet diameter Ø 68 mm
Mounting cutout Ø 71 mm
Mounting depth 53 mm
Dimensions Ø 93 mm x 55 mm
Outside diameter Ø 93 mm
Width Ø 93 mm
Depth 55 mm
Colour black/silver
Admiss. ambient temp. 0-40 °C
Weight 0.49 kg
Packing unit 1
Type of speaker 3″
Packing dimensions (W x H x L) 0.09 x 0.075 x 0.09 m
Gross weight 0.52 kg
Net weight 0.49 kg

Test results

Test results

Klang+Ton 02/2016
RAPTOR-6 and SPX-31M in the K+T test with MONACOR’s sound bar:
“This design provides a higher dynamic efficiency than most ready-made products available on the market.”
HOBBY HiFi 06/2015
“Ideally suited as a desktop speaker system.
Very neat workmanship.”


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