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All systems operational. Multiple currency checkout available soon !



Monacor SPH-135C Bass / Midrange

135mm / 5¼" Carbon Fibre Midwoofer.

The SPH-135C is a versatile drive unit from the Monacor 135 series featuring a woven carbon fibre cone, vented pole piece and diecast chassis. When mounted in correctly aligned cabinets this long throw unit is capable of reproducing bass that is surprisingly deep and accurate  - ported cabinets of around 14 litres can give an in room response extending down into the upper 30s (Hz) which is excellent for a driver of this size.

A fine replacement unit for a wealth of mainstream designs requiring a high quality 5¼ bass driver such as Rogers, Castle, Mission etc. Full details and dimensions can be found on the downloadable datasheet.

Key Features:

  • Woven Carbon Fibre Cone
  • Rugged Diecast Basket
  • Vented Pole Piece
  • Long Throw Design
  • Excellent Bass Response

Basic parameters:

Resonant frequency (fs) 40 Hz Nominal impedance (Zn) 8 Ω
Mechanical  Q factor (Qms) 4.48 DC resistance (Re) 6 Ω
Electrical Q factor (Qes) 0.43 RMS power handling 50W
Total Q factor (Qts) 0.39 Sensitivity (2.83V/1m) 88 dB
Equivalent volume (Vas) 17L Chassis diameter (pincushion profile) 133 mm


Here's the full datasheet:

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SPH135C, SPH 135 C

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