To seperate the lower frequencies for the bass drivers from the rest of the signal, an active crossover is needed. This
crossover is designed as three adjustable buffered first order crossovers. These crossovers are adjustable between 50 and
150 Hz. Also a volume control and phase switch (180 degrees) are added for maximum flexibility in finding my room's best
optimum bass drive.
The schematics are presented here.
Technical data:
Supplies : 300V/50 mA
Tubes : ECC83 Telefunken, E181CC IBM, 2*E180CC Philips SQ, ECC82 GE, EZ80 Philips
Measurements : 352 x 243 x 160 mm.
Weight : About 8 kg.
To seperate the lower frequencies for the bass drivers from the rest of the signal, an active crossover is needed. This
crossover is designed as three adjustable buffered first order crossovers. These crossovers are adjustable between 50 and
150 Hz. Also a volume control and phase switch (180 degrees) are added for maximum flexibility in finding my room's best
optimum bass drive.
