MuViStar M   Shelf speaker as in K+T 6/2021

Technical data
  • impedance: 8 Ohm
  • sensivity (2,83V/1m): 83 dB
  • size (HxWxD): 296 x 196 x 256 mm
  • frequency range (-8dB): 50 - 35000 Hz
  • crossover frequency(s): 2500 Hz
  • speaker type: bass reflex

MuViStar M is a two way compact speaker.

MuViStar M is a bass-reflex cabinet loudspeaker with drivers of Mundorf and Visaton.

The kit is delivered with the following drivers:
- a Mundorf AMTU60W1.1 air motion transformer (ribbon-tweeter)
- a Visaton AL130, 8 Ohm woofer

The loudspeaker has been developed by Thomas Schmidt and Holger Barske.

The crossover consists of:
- a 3rd order high-pass filter (18 dB per octave slope) for the tweeter.
- a 3rd order low-pass filter (18 dB per octave slope) for the woofer.

The frequency response of this speaker is nearly linear.

The decay spectrum is nearly perfect.

At low volume, i.e. 85 dB at 1 m, the nonlinear distortions are below 0,5% above 300 Hz and doesn't exceed 0,8% at 95 dB at 1 m between 300 and 15000 Hz.

Our kit consists of

  • Mundorf AMTU60W1.1
  • Visaton woofer AL 130, 8 Ohm
  • Bass reflex tube BR19.24, black
  • 0,5x PE sealing tape, 5x2 mm, 7.5 m
  • 0,25x Damping Sonofil 100 x 35 cm for 20 litres
  • 2x Bitumex board 32.5 x 24.5 cm, 2,5 mm
  • 0,5x Foam N25-30, 100 x 50 cm, black
  • Binding Post PK31, gold plated (one pair, red and black)
  • 1m Speaker cable 2x1.5 mm2, transparent
  • 0,5x Pan screws 3.5x17 black, torx, 8 pieces
  • 0,5x Pan screws 4x20 black, torx, 8 pieces
  • Plan for DIY kit

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

  • Audaphon MKP CAP Superior 4.7 μF / 400 Vdc
  • Audaphon MKP CAP Superior 8.2 μF / 400 Vdc
  • Audaphon MKT CAP 10 μF / 160 Vdc
  • 1.0 mm air core coil, 0.22 mH/0.21 Ohm
  • 1.0 mm air core coil, 1.5 mH/0.63 Ohm
  • 0.7 mm air core coil, 0.33 mH/0.48 Ohm
  • Metal-oxide resistor, 10W 10 Ohm (brown-black-black)

Kit without cabinet, price per speaker   EUR 405,00 excl. VAT: € 340.34 / $ 391.39

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 Mundorf AMTU60W1.1 are of type polypropylen (MKP) Clarity-Cap ESA 250 V and 630 V.

  • ClarityCap ESA capacitor 4.7 μF / 630 Vdc
  • ClarityCap ESA capacitor 8.2 μF / 250 Vdc
  • Audaphon MKP CAP Superior 10 μF / 400 Vdc
  • Mundorf baked varnish air core coil BL71, 0.33 mH/0.48 Ohm
  • Mundorf baked varnish air core coil BL100, 0.22 mH/0.21 Ohm
  • Mundorf baked varnish air core coil BL100, 1.5 mH/0.62 Ohm
  • Metal-oxide resistor, 10W 10 Ohm (brown-black-black)

Kit with high-end-crossover without cabinet, price per speaker   EUR 446,00 excl. VAT: € 374.79 / $ 431.01

Impedance correction

If you want to use a valve amplifier with this speaker an impedance correction should be employed. In this case the component quality is less important; therefore, we offer only one kit (upon request higher quality components are available).

  • Audaphon MKT CAP 22 μF / 160 Vdc
  • ceramic resistor 8.2 Ohm/20 Watt

Price per impedance correction for one speaker, to be mounted on a small wooden board.     EUR 8,30 excl. VAT: € 6.97 / $ 8.02

universal PCB

If you prefer to mount the crossover components on a universal PCB instead on wood
PCB 150x115 mm, tin plated, price per unit:   EUR 4,70 excl. VAT: € 3.95 / $ 4.54
We recommend one board per kit (2 boards per speaker pair)


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