There is currently a Krell KBX active x-over listed for sale in the Netherlands that has been used with Wilson WHOW. I'd really like to buy it as it matches the design of my late FPB style KRC-HR preamp, BUT!
I can't find any info on the frequency setting, Krell only states in the user manual that it can be done but nothing else, also there is no service manual available.
I know that they were factory delivered with settings for Apogee Diva/Full Range, Wilson, JBL K2 and B&W 800, according to audio-heritage.jp they had the proper settings for JBL 4343 and 4344 too but there is absolutely nothing to be found about it.
Is there any way to change the crossover frequency and the slope without shipping the KBX to Krell? The latter is not really an option when you consider shipping costs etc.
I am asking this before I jump on a unit that would only be usable as an expensive door stop. As always with Krell the circuit is crazily overengineered with discrete output and like 300 transistors in total but i think that the frequency card is mounted on the smaller PCB above: