MiniSat Basic, Shelf speaker   as in Hobby Hifi 3/2014

Technical data
- impedance: 4 Ohm
- sensivity (2,83V/1m): 85 dB
- size (HxWxD): 282 x 174 x 200 mm
- frequency range (-8dB): 65 - 21000 Hz
- crossover frequency(s): 2500 Hz
- speaker type: closed box

MiniSat Basic is a small shelf speaker developed by Bernd Timmermanns. MiniSat Basic is available as 4 Ohm version or as 8 Ohm version. It contains a Visaton bass loudspeaker W130S (in 4 or 8 Ohm) and a Visaton dome tweeter SC10.

The construction is quite simple: only 8 small rectangular cut boards are needed.

The crossover consists of second-order filters.

The frequency response is flat on 15 degree angle (horizontal deviation). The decay spectrum is without error. The non-linear distortions are less than 1% above 200 Hz at 90 dB SPL (1 m).
 

  

Our kit consists of

  • Visaton tweeter SC 10 N
  • Visaton woofer W130 S, 4 Ohm
  • PE sealing tape, 5x2 mm
  • 0,25x Damping Sonofil 100 x 35 cm for 20 litres
  • Binding Post PK31, gold plated (one pair, red and black)
  • 1m Speaker cable 2x1.5 mm2, transparent
  • Pan screws 3.5x17 black, cross recess, 12 pieces
  • Plan for DIY kit

the crossover components (right),
to be mounted on a piece of wood

  • Audaphon MKP CAP Superior 4.7 μF / 400 Vdc
  • electrolytic capacitor, etched, 22 μF/100 Vdc
  • electrolytic capacitor, unetched, 6.8 μF / 70 Vdc
  • 0.5 mm air core coil, 0.33 mH/0.75 0hm
  • 0.5 mm air core coil, 3.3 mH/3.13 0hm
  • 1.0 mm air core coil, 1.0 mH/0.49 Ohm
  • Metal-oxide resistor, 5W 10 Ohm (brown-black-black)
  • Metal-oxide resistor, 10W 2.2 Ohm (red-red-gold)
  • Metal-oxide resistor, 10W 5.6 Ohm (green-blue-gold)

Kit without cabinet, price per speaker (4 Ohm) EUR 113,00 excl. VAT: € 94.96 / $ 97.81

Kit with high-end crossover

The kit with high-end crossover contains four Mundorf copper foil coils and in series to the loudspeakers Mundorf capacitors of high quality, like a silver/gold/oil capacitor in series to the tweeter.

  • ClarityCap PWA capacitor 6.8 μF / 160 Vdc
  • Mundorf MCAP EVO Oil 4.7 μF / 450 V
  • electrolytic capacitor, unetched, 22uF / 70 Vdc
  • 0.5 mm air core coil, 3.3 mH/3.13 0hm
  • Mundorf baked varnish air core coil BL71, 0.33 mH/0.48 Ohm
  • Mundorf baked varnish air core coil BL100, 1.0 mH/0.49 Ohm
  • Metal-oxide resistor, 5W 10 Ohm (brown-black-black)
  • Metal-oxide resistor, 10W 2.2 Ohm (red-red-gold)
  • Metal-oxide resistor, 10W 5.6 Ohm (green-blue-gold)

Kit with high-end-crossover without cabinet, price per speaker (4 Ohm) EUR 145,00 excl. VAT: € 121.85 / $ 125.50
 

 

Kit with high-pass filter for usage with a subwoofer

If you want to use a subwoofer, MiniSat basic should be built with a high-pass filter:

Our kit consists of

  • dome tweeter Visaton SC 10 N
  • woofer Visaton W130 S, 4 Ohm
  • PE sealing tape, 5x2 mm
  • 0,25x Damping Sonofil 100 x 35 cm for 20 litres
  • Binding Post PK31, gold plated (one pair, red and black)
  • 1m Speaker cable 2x1.5 mm2, transparent
  • Pan screws 3.5x17 black, cross recess, 12 pieces
  • Plan for DIY kit

the crossover components (right),
to be mounted on a piece of wood

  • Audaphon MKP CAP Superior 4.7 μF / 400 Vdc
  • electrolytic capacitor, etched, 22 μF/100 Vdc
  • electrolytic capacitor, etched, 220 μF/63 Vdc
  • electrolytic capacitor, unetched, 6.8 μF / 70 Vdc
  • 0.5 mm air core coil, 0.33 mH/0.75 0hm
  • 2x 0.5 mm air core coil, 3.3 mH/3.13 0hm
  • 1.0 mm air core coil, 1.2 mH/0.54 Ohm
  • Metal-oxide resistor, 5W 6.8 Ohm (blue-grey-gold)
  • Metal-oxide resistor, 10W 3.3 Ohm (orange-orange-gold)
  • Metal-oxide resistor, 10W 5.6 Ohm (green-blue-gold)

Kit without cabinet, price per speaker (4 Ohm) EUR 130,00 excl. VAT: € 109.24 / $ 112.52
 

 

Kit with high-end crossover no 2

The kit with high-end crossover contains four Mundorf copper foil coils and in series to the loudspeakers Mundorf capacitors of high quality, like a silver/gold/oil capacitor in series to the tweeter.

  • electrolytic capacitor, unetched, 22uF / 70 Vdc
  • electrolytic capacitor, unetched, 220 μF / 50 Vdc
    (2x 68 μF + 82 μF in parallel)
  • ClarityCap PWA capacitor 6.8 μF / 160 Vdc
  • Mundorf MCAP EVO Oil 4.7 μF / 450 V
  • 2x 0.5 mm air core coil, 3.3 mH/3.13 0hm
  • Mundorf baked varnish air core coil BL71, 0.33 mH/0.48 Ohm
  • Mundorf baked varnish air core coil BL100, 1.2 mH/0.54 Ohm
  • Metal-oxide resistor, 5W 6.8 Ohm (blue-grey-gold)
  • Metal-oxide resistor, 10W 3.3 Ohm (orange-orange-gold)
  • Metal-oxide resistor, 10W 5.6 Ohm (green-blue-gold)

Kit with high-end-crossover without cabinet, price per speaker (4 Ohm) EUR 190,00 excl. VAT: € 159.66 / $ 164.45
 

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).

  • electrolytic capacitor, etched, 33 μF/100 Vdc
  • 0.7 mm air core coil, 0.22 mH/0.39 Ohm
  • 2x Metal-oxide resistor, 10W 12 Ohm (brown-red-black)


Price per impedance correction for one speaker, to be mounted on a small wooden board.   EUR 11,40 excl. VAT: € 9.58 / $ 9.87

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 / $ 3.64
We recommend one or two boards per kit (two or four boards for a speaker pair)
 

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