AmTon   Floorstanding as in K+T 4/2023

Technical data
  • impedance: 4 Ohm
  • sensivity (2,83V/1m): 92 dB
  • size (HxWxD): 2010 x 302 x 730 mm
  • frequency range (-8dB): 26 - 28000 Hz
  • crossover frequency(s): 200, 2500 Hz
  • speaker type: bass reflex

AmTon is a three way floorstanding speaker.

AmTon is a bass-reflex cabinet loudspeaker with drivers of Audaphon and Accuton.

The kit is delivered with the following drivers:
- a Audaphon AMT-1i air motion transformer (ribbon-tweeter)
- two Accuton C168-6-890 mids drivers
- six Accuton S220-6-224-FG woofers

The loudspeaker has been developed by Dennis Frank and Daniel Gattig.

The crossover consists of:
- a first order high-pass filter (6 dB per octave slope) for the tweeter.
- a band pass consisting of a first order high pass filter (6 dB per octave slope) and a first order low-pass filter (6 dB per octave slope) for the mids-woofer.
- a 2nd order low-pass filter (12 dB per octave slope) for the woofer.

The frequency response of this speaker is very linear and has a very large frequency bandwith.

The decay spectrum as shown in the waterfall diagram is exemplary, free of any disturbing resonance.

At low volume, i.e. 85 dB at 1 m, the nonlinear distortions are below 0,3% above 300 Hz and doesn't exceed 0,6% at 95 dB at 1 m between 300 and 15000 Hz.

An excerpt from the Klang+Ton review (Translation of the author into English)

Conclusion of the magazine Klang+Ton:

Our kit consists of

  • 6x Accuton S220-6-224-FG woofer, one unit
  • 2x Accuton C168-6-890 mids/woofer, 4D concept driver, one unit
  • Audaphon AMT-1i
  • 12x Bass reflex tube HP100, 100x197 mm, black
  • 34x Damping fleece MT Bondum 800 (30 x 50 x 2 cm)
  • 9x Binding Post PK28 I Ni, nickel plated (one pair, red and black)
  • 12m Speaker cable 2x1.5 mm2 black/red
  • 0,5x Visaton Countersunk screws 3.5x25, 8 pcs
  • 6x Allen wood screws, black, 4x25 mm, 8 pieces
  • 28x Adam Hall 4907 rubber foot
  • Plan for DIY kit

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

  • Jantzen Cross Cap MKP capacitor 220 μF / 400V
  • Audaphon MKP CAP Superior 1.5 μF / 400 Vdc
  • Audaphon MKP CAP Superior 3.9 μF / 400 Vdc
  • Audaphon MKP CAP Superior 4.7 μF / 400 Vdc
  • Mundorf, electrolytic capacitor, etched, 680 μF/63 Vdc
  • JB, electrolytic capacitor, bipolar, 150 μF/50 Vdc
  • JB, electrolytic capacitor, bipolar, 470 μF/50 Vdc
  • 1.0 mm air core coil, 0.39 mH/0.29 Ohm
  • 0.7 mm air core coil, 0.10 mH/0.27 Ohm
  • Mundorf bs140 core coil 8.2 mH/0.33Ohm
  • Mundorf H core coil H71, 10 mH/0.87 0hm
  • Mundorf H core coil H100, 10 mH/0.64 0hm
  • ceramic resistor 2.7 Ohm/20 Watt
  • 2x ceramic resistor 15 Ohm/20 Watt
  • Metal-oxide resistor, 10W 1.0 Ohm (brown-black-gold)
  • Metal-oxide resistor, 10W 6.8 Ohm (blue-grey-gold)

Kit without cabinet, price per speaker   EUR 9982,00 excl. VAT: € 8388.24 / $ 9059.29

Price for a pair of custom speakers of any color   - 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 Audaphon AMT-1i are of type polypropylen (MKP) Clarity-Cap MR and CMR 630 V.

  • ClarityCap MR capacitor 1.5 μF / 630 Vdc
  • ClarityCap CMR capacitor 3.9 μF / 630 Vdc
  • Mundorf MCAP EVO 4.7 μF / 450 V
  • Mundorf MCAP EVO 220 μF / 250 V
  • Mundorf, electrolytic capacitor, etched, 150 μF/63 Vdc
  • Mundorf, electrolytic capacitor, etched, 470 μF/63 Vdc
  • Mundorf, electrolytic capacitor, etched, 680 μF/63 Vdc
  • Mundorf copper foil coil CFC18-0.39 mH mH/0.28Ohm
  • Mundorf baked varnish air core coil BL71, 0.10 mH/0.23 Ohm
  • Mundorf bs140 core coil 8.2 mH/0.33Ohm
  • Mundorf H core baked varnish coil BH71, 10 mH/0.87 0hm
  • Mundorf H core baked varnish coil BH100, 10 mH/0.63 0hm
  • MResist Supreme 2.7 Ohm / 20 Watt
  • MResist Supreme 6.8 Ohm / 20 Watt
  • 2x MResist Supreme 15 Ohm / 20 Watt
  • Mresist Classic 1,0 Ohm / 10 Watt

Kit with high-end-crossover without cabinet, price per speaker   EUR 10335,00 excl. VAT: € 8684.87 / $ 9379.66

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 15 μF / 160 Vdc
  • 2x ceramic resistor 12 Ohm/20 Watt

Price per impedance correction for one speaker, to be mounted on a small wooden board.     EUR 9,30 excl. VAT: € 7.82 / $ 8.44

universal PCB

If you prefer to mount the crossover components on a 220 x 155 mm (LP06) and a 150 x 115 mm (LP05) universal PCB instead on wood:
Universal PCB LP05, order no.. I-2754, price per unit:   EUR 5,70 excl. VAT: € 4.79 / $ 5.17
Universal PCB LP06, order no.. I-2755, price per unit:   EUR 12,90 excl. VAT: € 10.84 / $ 11.71
We recommend one board (each) per kit (two boards (each) for a speaker pair)

Measurements

measurmentsMeasurements on this speaker

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