Orco   Shelf speaker as in K+T 5/2024

Technical data
  • impedance: 8 Ohm
  • sensivity (2,83V/1m): 95 dB
  • size (HxWxD): 570 x 400 x 338 mm
  • frequency range (-8dB): 60 - 21000 Hz
  • crossover frequency(s): 1650 Hz
  • speaker type: bass reflex
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Orco is a two way compact speaker.

Orco is a bass-reflex cabinet loudspeaker with drivers of Faital Pro .

The kit is delivered with the following drivers:
- a Faital Pro HF 108R + Celestion H1-7050 NoBell horn with driver
- a Faital Pro 12 PR 320 A woofer

The loudspeaker has been developed by Dennis Frank and Daniel Gattig.

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 perfectly linear.

The decay spectrum is nearly perfect.

At low volume, i.e. 85 dB at 1 m, the nonlinear distortions are below 0,6% above 200 Hz and doesn't exceed 1,2% at 95 dB at 1 m between 300 and 15000 Hz.

An excerpt from the Klang+Ton review (Translation of the author into English)

Conclusion of the magazine Klang+Ton:

Our kit consists of

  • Faital Pro HF 108R A - 1 inch Hochtontreiber 8 Ohm - 60 W
  • Faital Pro 12 PR 320 A - 12 inch Lautsprecher 8 Ohm - 300 W
  • Celestion H1-7050 NoBell Horn, Aluminium, 70x50 (T5134)
  • 2x st-BN202278
  • 2x Bass reflex tube BR70, 70x185 mm, black
  • PE sealing tape, 5x2 mm, 7.5 m
  • 0,5x Damping Sonofil 100 x 35 cm for 20 litres
  • Foam N25, 97,5x49x4 cm, black
  • 2x Neutrik Speakon NL4MPR, connector round, 4 pin
  • 3,5x Pan screws 4x20 black, torx, 8 pieces
  • 1,5x Allen wood screws, black, 5x30 mm, 8 pieces
  • Plan for DIY kit

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

  • ClarityCap PWA capacitor 0.15 μF / 400 Vdc
  • ClarityCap PWA capacitor 0.82 μF / 400 Vdc
  • Audaphon MKP CAP Superior 1.5 μF / 400 Vdc
  • Audaphon MKP CAP Superior 3.3 μF / 400 Vdc
  • Audaphon MKP CAP Superior 6.8 μF / 400 Vdc
  • Audaphon MKT CAP 22 μF / 160 Vdc
  • Mundorf, electrolytic capacitor, etched, 220 μF/63 Vdc
  • Mundorf air core coil L140, 0.56 mH/0.20 Ohm
  • 1.0 mm air core coil, 1.5 mH/0.63 Ohm
  • 0.7 mm air core coil, 0.47 mH/0.50 Ohm
  • 0.7 mm air core coil, 2.2 mH/1.3 Ohm
  • Mundorf vs140 core coil 1.8 mH/0.14Ohm
  • ceramic resistor 8.2 Ohm/20 Watt
  • ceramic resistor 12 Ohm/20 Watt
  • ceramic resistor 18 Ohm/20 Watt
  • ceramic resistor 33 Ohm/20 Watt

Kit without cabinet, price per speaker   EUR 648,00 excl. VAT: € 544.54 / $ 598.99

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 Faital Pro HF 108R + Celestion H1-7050 NoBell are of type polypropylen (MKP) Mundorf MCAP EVO Silber Gold Öl 450 V.

  • Mundorf MCAP EVO 0.15 μF / 450 V
  • Mundorf MCAP EVO 0.82 μF / 450 V
  • Mundorf MCAP EVO Oil 3.3 μF / 450 V
  • Mundorf MCAP EVO Oil 6.8 μF / 450 V
  • Mundorf MCAP EVO Silver Gold Öl 1.5 μF / 450 V
  • Mundorf MKP capacitor 22 μF / 400 V
  • Mundorf, electrolytic capacitor, etched, 220 μF/63 Vdc
  • Mundorf baked varnish air core coil BL71, 0.47 mH/0.57 Ohm
  • Mundorf baked varnish air core coil BL71, 2.2 mH/1.3 Ohm
  • Mundorf baked varnish air core coil BL100, 1.5 mH/0.62 Ohm
  • Mundorf baked varnish air core coil BL140, 0.56 mH/0.20 Ohm
  • Mundorf vs140 core coil 1.8 mH/0.14Ohm
  • ceramic resistor 12 Ohm/20 Watt
  • ceramic resistor 18 Ohm/20 Watt
  • MResist Supreme 8.2 Ohm / 20 Watt
  • MResist Supreme 33 Ohm / 20 Watt

Kit with high-end-crossover without cabinet, price per speaker   EUR 787,00 excl. VAT: € 661.34 / $ 727.48

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 15 μF / 160 Vdc
  • 0.7 mm air core coil, 0.10 mH/0.27 Ohm
  • ceramic resistor 10 Ohm/20 Watt

Price per impedance correction for one speaker, to be mounted on a small wooden board.     EUR 11,50 excl. VAT: € 9.66 / $ 10.63

universal PCB

If you prefer to mount the crossover components on a universal PCB instead on wood
PCB 220x155 mm, order no. I-8805002, price per unit:   EUR 11,80 excl. VAT: € 9.92 / $ 10.91
We recommend one board per kit (2 boards per speaker pair)

Measurements

measurmentsMeasurements on this speaker

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