Accustand   Floorstanding as in K+T 6/2021

Technical data
  • impedance: 4 Ohm
  • sensivity (2,83V/1m): 87 dB
  • size (HxWxD): 1200 x 220 x 300 mm
  • frequency range (-8dB): 38 - 35000 Hz
  • crossover frequency(s): 2000 Hz
  • speaker type: passive radiator

Accustand is a two way floorstanding speaker with Accuton woofers (114 mm voice coil) . The loudspeaker shows a lack of distortion that we have not experienced before!

Accustand is a loudspeaker with drivers of Audaphon and Accuton. Passive radiators provide deep bass.

The kit is delivered with the following drivers:
- a Audaphon Neo APR 1.0 ribbon-tweeter
- two Accuton C168-6-890 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 first order low-pass filter (6 dB per octave slope) for the woofer.

The frequency response of this speaker is perfectly linear.

The decay spectrum is perfect.

At low volume, i.e. 85 dB at 1 m, the nonlinear distortions are below 0,2% above 750 Hz and doesn't exceed 0.2% at 95 dB at 1 m between 300 and 17500 Hz.

This is absolutely top class, the likes of which we have never seen before!

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

"Well, if you can quantify something like sound quality, the Accustand of course is not TWICE as good as the compact Accutop - remember: both speakers are working with the identical drivers. But the bigger speaker consistently continues the path of the compact one and adds a bit more at a few points: For certain, the lower limit frequency and above all the bass dynamics are noticeably better here - so good and powerful that you have to take into account the size of your own listening room a bit when planning to build one: A box like this literally kills you with bass dynamics in a room that is too small. From 40 square meters to start with, possibly even a little more - there are plenty of dynamic reserves. And then the Accustand takes a deep breath and fascinates with a highly dynamic and powerful style of play on the one hand, and on the other hand with its grandiose ability to implement precisely even very subtle material."

Conclusion of the magazine Klang+Ton:

"With the Accustand, the Lautsprechershop is also setting new sound standards in this size class - not cheap, but worth every penny."

Our kit consists of

  • 2x Accuton C168-6-890 mids/woofer, 4D concept driver, one unit
  • 4x Wavecor PR182BD02 Passive Radiator, die cast
  • Audaphon Aluminium Ribbon Tweeter APR 1.0
  • 4x Damping fleece MT Bondum 800 (30 x 50 x 2 cm)
  • 1,5x Damping Sonofil 100 x 35 cm for 20 litres
  • Binding Post PK28 I, gold plated (one pair, red and black)
  • 4m Speaker cable 2x1.5 mm2 black/red
  • 5,5x Allen wood screws, black, 4x25 mm, 8 pieces
  • Plan for DIY kit

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

  • Audaphon MKP CAP Superior 4.7 μF / 400 Vdc
  • Audaphon MKT CAP 2.2 μF / 160 Vdc
  • Audaphon MKT CAP 4.7 μF / 160 Vdc
  • Audaphon MKT CAP 33 μF / 160 Vdc
  • 1.0 mm air core coil, 3.3 mH/1.2 Ohm
  • 1.3 mm air core coil, 0.82 mH/0.275 Ohm
  • 0.7 mm air core coil, 0.27 mH/0.44 Ohm
  • 0.7 mm air core coil, 0.033 mH
  • 0.7 mm air core coil, 0.82 mH/0.89 Ohm
  • 3x Metal-oxide resistor, 10W 2.2 Ohm (red-red-gold)
  • Metal-oxide resistor, 10W 3.3 Ohm (orange-orange-gold)

Kit without cabinet, price per speaker   EUR 2861,00 excl. VAT: € 2404.20 / $ 2692.71

Price for a pair of custom speakers of any color   EUR 9150,00 excl. VAT: € 7689.08 / $ 8611.76

Kit with high-end crossover

The high-end kit is delivered with baked varnish air core coils or Mundorf copper foil coil 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 capacitor for the Audaphon Neo APR 1.0 is of type Mundorf Mcap Supreme EVO Silver Gold Oil 4,7 μF with 800V.

  • Mundorf Mcap Supreme EVO Silver Gold Oil 4,7 μF / 800V
  • Mundorf MKP capacitor 33 μF / 250 V
  • Mundorf MKP capacitor 2.2 μF / 400 V
  • Mundorf MKP capacitor 4.7 μF / 400 V
  • Mundorf copper foil coil CFC14-0.82 mH/0.22Ohm
  • Mundorf baked varnish air core coil BL71, 0.033 mH
  • Mundorf baked varnish air core coil BL71, 0.27 mH/0.45 Ohm
  • Mundorf baked varnish air core coil BL71, 0.82 mH/0.89 Ohm
  • Mundorf baked varnish air core coil BL100, 3.3 mH/1.05 Ohm
  • MResist Supreme 3.3 Ohm / 20 Watt
  • 3x Mresist Classic 2,2 Ohm / 10 Watt

Kit with high-end-crossover without cabinet, price per speaker   EUR 3090,00 excl. VAT: € 2596.64 / $ 2908.24

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 47 μF / 160 Vdc
  • 0.7 mm air core coil, 0.10 mH/0.27 Ohm
  • ceramic resistor 4.7 Ohm/20 Watt

Price per impedance correction for one speaker, to be mounted on a small wooden board.     EUR 17,80 excl. VAT: € 14.96 / $ 16.75

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 / $ 4.42
We recommend two boards per kit (4 boards per speaker pair)

Measurements

measurmentsMeasurements on this speaker

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