Monacor GLS-301/GR   Shelf speaker as in K+T 1/2025

Technical data
  • impedance: 10 Ohm
  • sensivity (2,83V/1m): 81 dB
  • size (HxWxD): 500 x 320 x 330 mm
  • frequency range (-8dB): 50 - 15000 Hz
  • crossover frequency(s): Hz
  • speaker type: closed box

Monacor GLS-301/GR is a compact loudspeaker with a full range driver.

Monacor GLS-301/GR is a bass-reflex cabinet loudspeaker with drivers of Monacor .

The kit is delivered with a Monacor GLS-301/GR full range driver

The loudspeaker has been developed by Monacor and Thomas Schmidt.

The crossover consists of:
- a blocking circuit in series with the full range driver.

The frequency response of this speaker is nearly linear.

The decay spectrum (waterfall spectrum) shows a decelerated swing-out behaviour in the mid-range.

At low volume, i.e. 85 dB at 1 m, the nonlinear distortions are below 1,2% above 300 Hz and doesn't exceed 2,5% at 95 dB at 1 m between 300 and 15000 Hz.

Conclusion of the magazine Klang+Ton:

Our kit consists of

  • GLS-301/GR
  • Plan for DIY kit

the crossover components (right),
to be mounted on a small wooden board.

  • Audaphon MKT CAP 22 μF / 160 Vdc
  • Audaphon MKT CAP 68 μF / 160 Vdc
  • 1.0 mm air core coil, 0.33 mH/0.26 Ohm
  • 1.0 mm air core coil, 0.82 mH/0.44 Ohm
  • Metal-oxide resistor, 10W 22 Ohm (red-red-black)

Kit without cabinet, price per speaker   EUR 443,00 excl. VAT: € 372.27 / $ 409.50

Kit with high-end crossover

The high-end kit is delivered with baked varnish air core coils on important parts of the crossover for minimizing microphonic effects. - The current flow through the coil creates a magnetic field which sets the reel of wire in motion. This motion induces a voltage in the coil which adds itself to the signal. The stiffer the reel of wire is, the less the signal will be altered. The capacitors for the Monacor GLS-301/GR are of type polypropylen (MKP) Mundorf Mcap 250 V.

  • Mundorf MKP capacitor 22 μF / 250 V
  • Mundorf MKP capacitor 68 μF / 250 V
  • Mundorf baked varnish air core coil BL100, 0.33 mH/0.26 Ohm
  • Mundorf baked varnish air core coil BL100, 0.82 mH/0.45 Ohm
  • Metal-oxide resistor, 10W 22 Ohm (red-red-black)

Kit with high-end-crossover without cabinet, price per speaker   EUR 468,00 excl. VAT: € 393.28 / $ 432.61

universal PCB

If you prefer to mount the crossover components on a 140 x 102 mm universal PCB instead on wood:
Universal PCB RA140, order no.. str-RA140, price per unit:   EUR 4,20 excl. VAT: € 3.53 / $ 3.88
We recommend one board per kit (two boards for a speaker pair)


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