Monacor SPH 450 TC Paper Coated Twincoil

-12 %

RRP 725,31 €

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-12 %
Subwoofer, 2x500 W MAX, 2x4 Ohm
  • Dual voice coil bass speaker of highest power capability
  • Incredible bass pressure from amazingly small cabinets
  • Extensive ventilation of the voice coil
  • High-quality inverse cone
  • Gold-plated terminals
  • Diecast
  • Extra long excursion
  • Double centering spider
  • For professional and semiprofessional DJ and PA applications and for car hi-fi and home cinema applications of highest requirements

Klang+Ton 1/2003

"The matching speaker for the active super subwoofer, which can only be described as superlative!"

Hobby HiFi 3/2000

"In view of this sound converter designed with an extra long excursion, all other bass speakers introduced in HOBBY HIFI so far simply fade."

Short data

Usage as Woofer
Power Handling 2x350 Watt
Impedance 2x4 Ohm
Frequency from 20 Hz
Max. Frequency 1.5 kHz
Sound pressure 93 dB


Overall dimensions 460 mm
Baffle cutout 425 mm
Depth (Total) 220 mm
Frame Material Aluminium diecast
Membrane Type Cone
Membrane Material Paper coated
Voice coil Ø 99.3 mm
Voice coil height 38 mm
Voice coil material Aluminium
Magnet Ø 220 mm
Magnet-weight 5700 g
Magnet-inductance 32.4 T


Resonance fs fs: 20 Hz
Mechanical Q Qms: 2.97
Electrical Q Qes: 0.27
Total Q Qts: 0.25
Equivalent Air-Volumen Vas: 480 Liter
DC-Resistance Re: 2x3.7 / 1x7.4 Ohm
Coil Inductance Le: 2x1.1 / 1x4.6 mH
Mech. Compliance Cms: 0.22 mm/N
Moving Mass Mms: 305 g
mech. Resistance Rms: 12.7 kg/s-¹
Max. Excursion +/- Xmax: 26 mm
BL Product Bl: 32.4 N/A
Membrane Area Sd: 1250 cm²
Sound pressure dB: 93 SPL
Efficiency Nref: 1.37 %

Frequency & Impedance

Technical Dimesnions

PDF-Product information

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