600W aktivt subwoofer modul

Hi. Jeg er ny bruger på forum. Jeg vil skrive på engelsk( Jeg begyndte at lære dansk og jeg kender ikke den tekniske betegnelse)  

I have for sale new subwoofer plate module for hi-end subwoofer speakers or PA speakers. Highest model to use in large home cinema system. Installed only for a moment to check how it works. Finally I resigned from my sub project and right now I have it unused.

Little bit about it:

Power amplifier build from 2 Mosfet channels, that control 2 pairs of original Japanese high-power transistors 2SC5200,2SA1943-SANKEN construction/working in a bridge configuration. Large (16x9cm) aluminum radiator with 80mm fan(with temp controller),electronically controlled from amplifier. Built up from inside, on a thick aluminum bracket, which gives thermal stability of the amplifier. Audio toroidal transformer with a diameter of 125 mm, a small stream of distraction, continuous 400VA, (possibility of overload of approximately 25% without the danger of destruction.) It also has built-in protection of delay on loudspeaker switch on.

On elevation of amplifier are:
SUB INPUTS ( to choose between 100mV and 500mV) + AUDIO IN and OUTPUT for 2 stereo channels. Active low-pass filter with high performance steepness has an additional subsonic filter/making it impossible to work on infrasound. Auto power on/of or manual switch.

Power max- 600W
Power rms- 400W 4 ohm
Power rms- 280W 8 ohm
Frequency- from 20 to 180Hz (regulated) 
Controls-    Volume, filter, phase
Size-           25x27 cm / weight 3,5kg

Model similar to Hypex DS4.0 for 2600dkk from http://www.lautsprechershop.de/index_hifi_en.htm?http://www.lautsprechershop.de/hifi/verst_hy_en.htm?xxx?xxx

Price- around 2000 dkk for negotiation

Contact on my email   ruffpl@gmail.com or on forum. 

Still for sale. New price 1800 dkk.