ScaMo 15AMT   Shelf speaker as in Hobby Hifi 3/2018

Technical data
  • impedance: 8 Ohm
  • sensivity (2,83V/1m): 84,5 dB
  • size (HxWxD): 360 x 180 x 270 mm
  • frequency range (-8dB): 48 - 31000 Hz
  • crossover frequency(s): 4000 Hz
  • speaker type: bass reflex

ScaMo 15AMT is a two way compact speaker.

ScaMo 15AMT is a bass-reflex cabinet loudspeaker with drivers of Scan Speak and Audaphon .

The kit is delivered with the following drivers:
- a Audaphon AMT 2i-Rund tweeter
- a Scan Speak 15W-8434G00 woofer

The loudspeaker has been developed by Bernd Timmermanns.

The crossover consists of:
- a 3rd order high-pass filter (18 dB per octave slope) for the tweeter.
- a 2rd order low-pass filter (12 dB per octave slope) for the woofer.

The frequency response of this speaker is perfectly linear.

The decay spectrum is perfect.

At medium volume, i.e. 90 dB at 1 m, the nonlinear distortions are below 0,3% above 400 Hz.

Our kit consists of

  • Audaphon AMT-2i with round faceplate
  • ScanSpeak Woofer/midrange 15W-8434G00
  • 2x Bass reflex tube HP50, 50x145 mm, black
  • 0,5x Damping fleece MT Bondum 800 (30 x 50 x 2 cm)
  • 0,5x PE sealing tape, 5x2 mm, 7.5 m
  • 0,5x Damping Sonofil 100 x 35 cm for 20 litres
  • Binding Post PK31, gold plated (one pair, red and black)
  • 1,5m Speaker cable 2x2.5 mm2, transparent
  • 0,5x 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 1.0 uF / 400 Vdc
  • Audaphon MKP CAP Superior 2.2 uF / 400 Vdc
  • Audaphon MKP CAP Superior 6.8 uF / 400 Vdc
  • Audaphon MKP CAP Superior 8.2 uF / 400 Vdc
  • Mundorf, electrolytic capacitor, etched, 150 uF/63 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, 4.7 mH/2.19 Ohm
  • 0.5 mm core coil 15.0 mH/4.4 Ohm
  • 2x Metal-oxide resistor, 10W 4.7 Ohm (yellow-violet-gold)
  • Metal-oxide resistor, 10W 8.2 Ohm (grey-red-gold)
  • Metal-oxide resistor, 10W 22 Ohm (red-red-black)
  • Metal-oxide resistor, 5W 10 Ohm (brown-black-black)

Kit without cabinet, price per speaker   EUR 448,00 excl. VAT: € 376.47 / $ 425.41

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 tweeter are of type polypropylen (MKP) Clarity-Cap CSA 630 V.

Kit with high-end-crossover without cabinet, price per speaker   EUR 489,00 excl. VAT: € 410.92 / $ 464.34

Upgrade Kit from ScaMo 15 to ScaMo 15AMT

Our kit consists of

  • Audaphon AMT-2i round faceplate
  • Plan for DIY kit

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

  • Audaphon MKP CAP Superior 1.0 uF / 400 Vdc
  • Audaphon MKP CAP Superior 2.2 uF / 400 Vdc
  • Audaphon MKP CAP Superior 6.8 uF / 400 Vdc
  • Audaphon MKP CAP Superior 8.2 uF / 400 Vdc
  • Mundorf, electrolytic capacitor, etched, 150 uF/63 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, 4.7 mH/2.19 Ohm
  • 2x Metal-oxide resistor, 10W 4.7 Ohm (yellow-violet-gold)
  • Metal-oxide resistor, 10W 8.2 Ohm (grey-red-gold)
  • Metal-oxide resistor, 10W 22 Ohm (red-red-black)
  • Metal-oxide resistor, 5W 10 Ohm (brown-black-black)

Kit without cabinet, price per unit   EUR 368,00 excl. VAT: € 309.24 / $ 349.45

Our high-end upgrade kit consists of

  • Audaphon AMT-2i round faceplate
  • Plan for DIY kit

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

  • ClarityCap CSA capacitor 2.2 uF / 630 Vdc
  • ClarityCap CSA capacitor 6.8 uF / 630 Vdc
  • Audaphon MKP CAP Superior 1.0 uF / 400 Vdc
  • Audaphon MKP CAP Superior 8.2 uF / 400 Vdc
  • Mundorf, electrolytic capacitor, etched, 150 uF/63 Vdc
  • Mundorf baked varnish air core coil BL71, 0.27 mH/0.45 Ohm
  • Mundorf baked varnish air core coil BL71, 4.7 mH/2.19 Ohm
  • Mundorf baked varnish air core coil BL140, 0.47 mH/0.19 Ohm
  • Mundorf baked varnish air core coil BL140, 1.8 mH/0.43 Ohm
  • 0.5 mm core coil 15.0 mH/4.4 Ohm
  • 2x Metal-oxide resistor, 10W 4.7 Ohm (yellow-violet-gold)
  • Metal-oxide resistor, 10W 8.2 Ohm (grey-red-gold)
  • Metal-oxide resistor, 10W 22 Ohm (red-red-black)
  • Metal-oxide resistor, 5W 10 Ohm (brown-black-black)

Kit without cabinet, price per unit   EUR 419,00 excl. VAT: € 352.10 / $ 397.87

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 9,25 excl. VAT: € 7.77 / $ 8.78

universal PCB

If you prefer to mount the crossover components on a 159 x 127 mm universal PCB instead on wood:
Universal PCB RA160, order no.. I-2766, price per unit:   EUR 5,10 excl. VAT: € 4.29 / $ 4.84
We recommend one board per kit (two boards for a speaker pair)


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