Ophelia   Floorstanding as in K+T 3/2014

Technical data
  • impedance: 4 Ohm
  • sensivity (2,83V/1m): 89 dB
  • size (HxWxD): 993 x 268 x 462 mm
  • frequency range (-8dB): 29 - 41000 Hz
  • crossover frequency(s): 1000, 2000 Hz
  • speaker type: bass reflex

Ophelia floorstanding contains a Scan Speak dome tweeter with beryllium dome and two Scan Speak 18W/8531G00. It is developed by Holger Barske und Thomas Schmidt.

Ophelia is a bassreflex loudspeaker.

The crossover consists of a 2rd order high-pass filter (12 dB per octave slope) to control the silk dome tweeter and 2nd order low-pass filter for the control of the mid-woofer. Parallel to tweeter and mid-woofer still absorption circuits are arranged which correct the frequency characteristics without worsening the impulse accuracy.

The frequency response is quite flat, the harmonic distortion is absolutely low. This only can be found in top-class speakers. The decay spectrum shows a small resonance at 450 Hz; apart from that it is without any fault.

Our kit consists of

  • ScanSpeak Illuminator D2908/714000 with beryllium cone
  • 2x ScanSpeak woofer 18W8531 G (Revelator)
  • Bass reflex tube BR70, 70x185 mm, black
  • 4x Damping fleece MT Bondum 800 (30 x 50 x 2 cm)
  • 2,5x Damping Sonofil 100 x 35 cm for 20 litres
  • 4x Puck SP12, gold plated
  • Binding Post PK31, gold plated (one pair, red and black)
  • 4m Speaker cable 2x2.5 mm2, transparent
  • Allen wood screws, black, 5x30 mm, 12 pieces
  • Allen wood screws, black, 4X25MM, 8 pieces
  • Plan for DIY kit

the crossover components (right),
to be mounted on a small wooden board.
  • Audaphon MKP CAP Superior 3.3 μF / 400 Vdc
  • Audaphon MKP CAP Superior 10 μF / 400 Vdc
  • Audaphon MKP CAP Superior 18 μF / 400 Vdc
  • 1.0 mm air core coil, 0.56 mH/0.36 Ohm
  • 1.4 mm air core coil, 1.0 mH/0.30 Ohm
  • 1.4 mm air core coil, 2.7 mH/0.51 Ohm
  • Metal-oxide resistor, 10W 2.7 Ohm (red-purple-gold)

Instead of Damping 30 we deliver in our kit Bondum 800.

Kit without cabinet,
price per speaker   on request

Kit with high-end crossover

Our high-end version employs one Rike oil paper capacitor in series to the tweeter. In series to the woofer Mundorf copper foil coils are used.

Kit without cabinet,
price per speaker   on request

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).

Price per impedance correction for one speaker, to be mounted on a small wooden board.     EUR 16,30 excl. VAT: € 13.70 / $ 14.66

universal PCB

If you prefer to mount the crossover components on a 240 x 165 mm universal PCB instead on wood:
Universal PCB RA240, order no.. str-RA240, price per unit:   EUR 8,60 excl. VAT: € 7.23 / $ 7.73
We recommend two boards per kit (four boards for a speaker pair)

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