Orchestra TT 8 (Bass extension for Orchestra Monitor 4)   Subwoofer as in K+T 5/2018

Technical data
  • impedance: 8 Ohm
  • sensivity (2,83V/1m): 87 dB
  • size (HxWxD): 700 x 280 x 340 mm
  • frequency range (-8dB): 30 - 400 Hz
  • crossover frequency(s): Hz
  • speaker type: bass reflex

Orchestra TT 8 is a passive subwoofer for the Orchestra Monitor 4 compact speaker.

The kit is inclusive the high pass filter you need for the Orchestra Monitor 4 compact speaker.

Orchestra TT 8 is a bass-reflex cabinet loudspeaker with drivers of Eton .

The kit is delivered with a Eton 8-612/C8/32 RP woofer

The loudspeaker has been developed by Thomas Schmidt.

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

The frequency response of this speaker is nearly linear.

The decay spectrum is nearly perfect.

At low volume, i.e. 85 dB at 1 m, the nonlinear distortions are below 3% above 70 Hz and doesn't exceed 3% at 95 dB at 1 m between 300 and 15000 Hz.

Our kit consists of

  • Eton 8 inch paper cone woofer 8-612/C8/32RP
  • Bass reflex tube HP70, 68x160 mm, black
  • 0,5x PE sealing tape, 5x2 mm, 7.5 m
  • 1,5x Damping Sonofil 100 x 35 cm for 20 litres
  • Foam N25, 100x50x4 cm, black
  • Binding Post PK31, gold plated (one pair, red and black)
  • 2m Speaker cable 2x1.5 mm2, transparent
  • Pan screws 4x20 black, 8 pieces
  • Plan for DIY kit

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

  • Jantzen Cross Cap MKP capacitor 39 uF / 400V
  • Jantzen Cross Cap MKP capacitor 82 uF / 400V
  • Mundorf H core coil H50, 5.6 mH/1.11 0hm
  • Mundorf ferrite core coil H132, 5.6 mH/0.36 Ohm
  • ceramic resistor 2.2 Ohm/20 Watt
  • Metal-oxide resistor, 10W 4.7 Ohm (yellow-violet-gold)

Kit without cabinet, price per speaker   EUR 215,00 excl. VAT: € 180.67 / $ 204.16

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 midrange driver are of type polypropylen (MKP) Clarity-Cap ESA 250 V.

Kit with high-end-crossover without cabinet, price per speaker   EUR 259,00 excl. VAT: € 217.65 / $ 245.94

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 / $ 4.46
We recommend one board per kit (2 boards per speaker pair)


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