BK108 is a backloaded horn. It is a design of Fostex, Japan.
To flatten the frequency response of the speaker Günter Damde (Saarbrücken, Germany, +49-681-499329) added a crossover.
The fullrange speaker Fostex FE108 E Sigma is used in the floorstander.
The crossover contains two wave traps in series to the speaker.
the crossover components (right),
to be mounted on a small wooden board.
Kit without cabinet, price per speaker EUR 190,00 excl. VAT: € 159.66 / $ 174.03
The high-end kit comes with Mundorf MCAP supreme, high end resistor and Mundorf copper foil coils 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.
Kit with high-end-crossover without cabinet, price per speaker EUR 241,00 excl. VAT: € 202.52 / $ 220.75
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).
If you prefer to mount the crossover components on a 159 x 127 mm universal PCB instead on wood:
Universal PCB RA160, order no.. I-2766, price per unit: EUR 5,10 excl. VAT: € 4.29 / $ 4.67
We recommend one board per kit (two boards for a speaker pair)
Hobby HiFi Overview