sLab8   Floorstanding as in K+T 1/2019

Technical data
  • impedance: 8 Ohm
  • sensivity (2,83V/1m): 88 dB
  • size (HxWxD): 999 x 300 x 255 mm
  • frequency range (-8dB): 45 - 17000 Hz
  • crossover frequency(s): Hz
  • speaker type: bass reflex

sLab8 is a two way floorstanding speaker.

sLab8 is a bass-reflex cabinet loudspeaker with drivers of Stereo-Lab and Beyma.

The kit is delivered with the following drivers:
- a Beyma CD-10FE mit Stereo-Lab SL-600-1 horn with driver
- a Beyma 8 G 40 woofer

The loudspeaker has been developed by Oliver Martin.

The crossover consists of:
- a 2nd order high-pass filter (12 dB per octave slope) for the tweeter.
- a 2nd order low-pass filter (12 dB per octave slope) for the woofer.

The frequency response of this speaker is mostly linear.

The decay spectrum is error-free except for a resonance around 7000 Hz.

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

Our kit consists of

  • Stereo Lab Horn SL-600-1, Strukturlack Weiss
  • Beyma CD 10/FE, 1 inch driver, 70W, 1.2-19 kHz
  • Beyma woofer 8 G 40, 250 Watt
  • Bass reflex tube HP70 XL, 70x220 mm, black
  • Cutting of needle fleece 2000 g/m2 1000x400, 20mm
  • Bi-wiring Terminal T122 Ni with brass, nickel plated
  • 3m Speaker cable 2x2.5 mm2, transparent
  • Pan screws 4x20 black, 8 pieces
  • Plan for DIY kit

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

  • Audaphon MKP CAP Superior 0.33 uF / 400 Vdc
  • Audaphon MKP CAP Superior 4.7 uF / 400 Vdc
  • Audaphon MKT CAP 15 uF / 160 Vdc
  • Audaphon MKT CAP 22 uF / 160 Vdc
  • Mundorf, electrolytic capacitor, unetched, 22uF / 70 Vdc
  • Mundorf, electrolytic capacitor, unetched, 100uF / 50 Vdc
  • 0.7 mm air core coil, 0.27 mH/0.44 Ohm
  • 0.7 mm air core coil, 0.33 mH/0.48 Ohm
  • Mundorf ferrite core coil F50 15mH/4,79 Ohm
  • Monacor transformer coil LSI-56T, 5.6mH/0.15 Ohm
  • 2x ceramic resistor 1.8 Ohm/20 Watt
  • Metal-oxide resistor, 10W 2.2 Ohm (red-red-gold)
  • Metal-oxide resistor, 10W 6.8 Ohm (blue-grey-gold)
  • Metal-oxide resistor, 10W 10 Ohm (brown-black-black)

Kit without cabinet, price per speaker   - not available

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 Beyma CD-10FE mit Stereo-Lab SL-600-1 are of type polypropylen (MKP) Clarity-Cap CSA 630 V.

Kit with high-end-crossover without cabinet, price per speaker   - not available

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 15,40 excl. VAT: € 12.94 / $ 14.49

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 11,70 excl. VAT: € 9.83 / $ 11.01
We recommend one board per kit (2 boards per speaker pair)


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