DigiBox 87FE, Shelf speaker   as in Hobby Hifi 5/2014

Technical data
- impedance: 8 Ohm
- sensivity (2,83V/1m): 85 dB
- size (HxWxD): 242 x 150 x 190 mm
- frequency range (-8dB): 60 - 20000 Hz
- crossover frequency(s): Hz
- speaker type: bass reflex

DigiBox 87FE is designed by Bernd Timmermanns. It contains a fullrange speaker Visaton SL 87FE. It feels at home in a bass reflex cabinet.
 

Our kit consists of

   
  • Visaton SL87 FE, 8 Ohm
  • Bass reflex tube HP35, 35x125 mm, black
  • 0,25x Damping Sonofil 100 x 35 cm for 20 litres
  • High end female banana jacks, red and black
  • 1m Speaker cable 2x0.75 mm2, transparent
  • Pan screws 4x20 black, cross recess, 4 pieces
  • Plan for DIY kit

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

  • Mundorf, electrolytic capacitor, unetched, 1.5 uF / 70 Vdc
  • Mundorf, electrolytic capacitor, unetched, 5.6 uF / 70 Vdc
  • Mundorf, electrolytic capacitor, unetched, 6.8 uF / 70 Vdc
  • 0.5 mm air core coil, 4.7 mH/3.777 0hm
  • 1.0 mm air core coil, 0.12 mH/0.15 Ohm
  • 1.0 mm air core coil, 0.47 mH/0.32 Ohm
  • Metal-oxide resistor, 5W 3.3 Ohm [orange-orange-gold]
  • Metal-oxide resistor, 5W 10 Ohm [brown-black-black]
  • Metal-oxide resistor, 5W 15 Ohm [brown-green-black]

Kit without cabinet, price per speaker EUR 52,00 excl. VAT: € 43.70 / $ 50.69

Kit with high-end crossover

The kit with high-end crossover contains Audaphon foil capacitors with polypropylen foil. In series to the loudspeaker Mundorf baked varnish coils are used.

  • Audaphon MKP CAP Superior 1.5 uF / 400 Vdc
  • Audaphon MKP CAP Superior 5.6 uF / 400 Vdc
  • Audaphon MKP CAP Superior 6.8 uF / 400 Vdc
  • Mundorf air core coil L50, 4.7 mH/3.777 0hm
  • Mundorf baked varnish air core coil BL100, 0.12 mH/0.15 Ohm
  • Mundorf H core baked varnish coil BH71, 0,47 mH/0.20 0hm
  • Metal-oxide resistor, 5W 3.3 Ohm [orange-orange-gold]
  • Metal-oxide resistor, 5W 10 Ohm [brown-black-black]
  • Metal-oxide resistor, 5W 15 Ohm [brown-green-black]

Kit with high-end-crossover without cabinet, price per speaker EUR 65,50 excl. VAT: € 55.04 / $ 63.85

price-performance kit

The following kit contains only one wave trap curcuit in the crossover. In addition it contais an inexpensive spring loaded terminal.

  • Visaton SL87 FE, 8 Ohm
  • Bass reflex tube HP35, 35x125 mm, black
  • 0,25x Damping Sonofil 100 x 35 cm for 20 litres
  • Spring loaded terminal T56 D
  • Speaker cable 2x0.75 mm2, transparent
  • 0,5x Pan screws 4x20 black, cross recess, 8 pieces
  • Plan for DIY kit

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

  • electrolytic capacitor, unetched, 6.8 uF / 70 Vdc
  • 1.0 mm air core coil, 0.47 mH/0.32 Ohm
  • Metal-oxide resistor, 5W 10 Ohm [brown-black-black]

Kit with high-end-crossover without cabinet, price per speaker EUR 30,70 excl. VAT: € 25.80 / $ 29.93

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).

  • Mundorf, electrolytic capacitor, unetched, 15uF / 70 Vdc
  • 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 3,75 excl. VAT: € 3.15 / $ 3.66

universal PCB

If you prefer to mount the crossover components on a 159 x 127 mm universal PCB instead on wood:
Universal PCB RA160, order no.. I-2766, price per unit: EUR 5,10 excl. VAT: € 4.29 / $ 4.97
We recommend one board per kit (two boards for a speaker pair)
 


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