Accutop is a two way compact speaker with fantastic sound characteristics. To call it a reference loudspeaker makes a mockery of its performance. Accutop is the best loudspeaker we know so far.
Accutop is a loudspeaker with drivers of Audaphon, Accuton and Wavecor. Passive radiators provide deep bass.
The kit is delivered with the following drivers:
- a Audaphon APR 1.0 ribbon-tweeter
- a Accuton C168-6-890 woofer with huge voice coil
- two large passive membranes on the back of the loudspeaker
The loudspeaker 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.
- 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 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 0,5% at 95 dB at 1 m between 300 and 15000 Hz.
the crossover components (right),
to be mounted on a small wooden board.
Kit without cabinet, price per speaker EUR 1675,00 excl. VAT: € 1407.56 / $ 1675.00
Price for a pair of custom speakers of any color EUR 5887,00 excl. VAT: € 4947.06 / $ 5887.00
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 APR 1.0 are of type polypropylen (MKP) Mundorf MCAP EVO Silber Gold Öl and Clarity Cap CSA.
Kit with high-end-crossover without cabinet, price per speaker EUR 1793,00 excl. VAT: € 1506.72 / $ 1793.00
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 12,90 excl. VAT: € 10.84 / $ 12.90
If you prefer to mount the crossover components on a universal PCB instead on wood
PCB 220x155 mm, order no. I-8805002, price per unit: EUR 11,80 excl. VAT: € 9.92 / $ 11.80
We recommend one board per kit (2 boards per speaker pair)
Measurements on this speaker