NS-10 Tribute   Shelf speaker as in K+T 6/2021

Technical data
  • impedance: 8 Ohm
  • sensivity (2,83V/1m): 87 dB
  • size (HxWxD): 382 x 215 x 180 mm
  • frequency range (-8dB): 60 - 20000 Hz
  • crossover frequency(s): 2900 Hz
  • speaker type: closed box

NS-10 Tribute is a two way compact speaker.

NS-10 Tribute is a closed-cabinet loudspeaker with drivers of Bold North Audio .

The kit is delivered with the following drivers:
- a Bold North Audio BDT-2901 tweeter
- a Bold North Audio MS-10W woofer

The loudspeaker has been developed by Thorsten Fischer and Thomas Schmidt.

The crossover consists of:
- a 3rd order high-pass filter (18 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 nearly perfect.

At low volume, i.e. 85 dB at 1 m, the nonlinear distortions are below 0,5% above 300 Hz and doesn't exceed 1,4% at 95 dB at 1 m between 300 and 15000 Hz.

Our kit consists of

  • Bold North Audio BDT-2901
  • Bold North Audio MS-10W
  • 2x Damping fleece MT Bondum 800 (30 x 50 x 2 cm)
  • Damping Sonofil 100 x 35 cm for 20 litres
  • Bi-wiring Terminal T122 Au with brass, gold plated
  • 2m Speaker cable 2x1.5 mm2, transparent
  • 0,5x Pan screws 3.5x17 black, torx, 8 pieces
  • Pan screws 4x20 black, torx, 8 pieces
  • Plan for DIY kit

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

  • Audaphon MKP CAP Superior 3.9 μF / 400 Vdc
  • Audaphon MKP CAP Superior 8.2 μF / 400 Vdc
  • Audaphon MKP CAP Superior 10 μF / 400 Vdc
  • 1.0 mm air core coil, 1.8 mH/0.7 Ohm
  • 0.7 mm air core coil, 0.22 mH/0.34 Ohm
  • Metal-oxide resistor, 10W 2.2 Ohm (red-red-gold)

Kit without cabinet, price per speaker   EUR 407,00 excl. VAT: € 342.02 / $ 393.32

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 Bold North Audio BDT-2901 are of type polypropylen (MKP) Clarity-Cap CSA 630 V.

  • ClarityCap PWA capacitor 10 μF / 400 Vdc
  • ClarityCap CSA capacitor 3.9 μF / 630 Vdc
  • ClarityCap CSA capacitor 8.2 μF / 630 Vdc
  • Mundorf copper foil coil CFC16-1.8 mH/0.50Ohm
  • Mundorf baked varnish air core coil BL71, 0.22 mH/0.34 Ohm
  • Metal-oxide resistor, 10W 2.2 Ohm (red-red-gold)

Kit with high-end-crossover without cabinet, price per speaker   EUR 488,00 excl. VAT: € 410.08 / $ 471.60

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 10 μF / 160 Vdc
  • 0.7 mm air core coil, 0.56 mH/0.55 Ohm
  • ceramic resistor 12 Ohm/20 Watt

Price per impedance correction for one speaker, to be mounted on a small wooden board.     EUR 9,80 excl. VAT: € 8.24 / $ 9.47

universal PCB

If you prefer to mount the crossover components on a universal PCB instead on wood
PCB 150x115 mm, tin plated, price per unit:   EUR 4,70 excl. VAT: € 3.95 / $ 4.54
We recommend one board per kit (2 boards per speaker pair)


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