Monitor m1i   Shelf speaker as in K+T 5/2015

Technical data
  • impedance: 6 Ohm
  • sensivity (2,83V/1m): 83 dB
  • size (HxWxD): 350 x 170 x 240 mm
  • frequency range (-8dB): 60 - 30000 Hz
  • crossover frequency(s): 2700 Hz
  • speaker type: bass reflex

The Monitor M1i is a high-end 2 way bassreflex bookshelf speaker with air motion transformer and Scan-Speak woofer. The kit is delivered with the outstanding Audaphon AMT 1i tweeter and an excellent woofer Scan-Speak 18WU8741T00. M1i 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 and a 3rd order low-pass filter for the woofer. A parallel RCL drain circuit is smoothing the frequency response of the woofer at about 1000 Hz

The frequency response of this speaker is linear with reinforcement of bass and treble. The decay spectrum is nearly perfect. At low volume, i.e. 85 dB at 1 m, the nonlinear distortions are lower than 0.4% above 300 Hz and rises not over 1% at 95 dB at 1 m .

Our kit consists of

  • Audaphon AMT-1i
  • ScanSpeak Midrange 15WU8741T 8Ohm
  • Bass reflex tube HP50, 50x145 mm, black
  • Damping fleece MT Bondum 800 (30 x 50 x 2 cm)
  • 0,25x Damping Sonofil 100 x 35 cm for 20 litres
  • Female banana jacks, 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.
  • Audaphon MKP CAP Superior 3.9 uF / 400 Vdc
  • Audaphon MKP CAP Superior 10 uF / 400 Vdc
  • 2x Audaphon MKT CAP 6.8 uF / 160 Vdc
  • Mundorf air core coil L140, 0.47 mH/0.19 Ohm
  • Mundorf air core coil L140, 1.8 mH/0.43 Ohm
  • 0.7 mm air core coil, 0.27 mH/0.45 Ohm
  • 0.7 mm air core coil, 5.6 mH/2.42 Ohm
  • Metal-oxide resistor, 10W 1.5 Ohm (brown-green-gold)
  • Metal-oxide resistor, 10W 2.2 Ohm (red-red-gold)
  • Metal-oxide resistor, 10W 3.9 Ohm (orange-white-gold)
  • Metal-oxide resistor, 10W 33 Ohm (orange-orange-black)

Kit without cabinet, price per speaker   EUR 798,00 excl. VAT: € 670.59 / $ 771.18

Kit with medium-end crossove#r

The kit comes with ClarityCap capacitors of high quality. The inductances are baked varnish air core coils 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.

Kit with medium-end-crossover without cabinet, price per speaker   EUR 839,00 excl. VAT: € 705.04 / $ 810.80

Kit with high-end crossover

The high-end kit comes with ClarityCap capacitors of high quality. The inductances are baked varnish air core coils or Mundorf copper foil coils 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.

Kit with high-end-crossover without cabinet, price per speaker   EUR 989,00 excl. VAT: € 831.09 / $ 955.76

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 12,55 excl. VAT: € 10.55 / $ 12.13

universal PCBs

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 two boards per kit (4 boards per speaker pair)

Measurements Monitor M1i

Grafik

Pictures Monitor M1i

Grafik


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