Hello some one help me active crossover
Calculator.
My 3way active speaker frequency point 320 &3200 Hz and currently using DBX 3way active network filter ,so I would like to update fix resistor value instead of trim potentiometer . So can I remove potentiometer and replace right resistor value ?
Thanks for key in
Calculator.
My 3way active speaker frequency point 320 &3200 Hz and currently using DBX 3way active network filter ,so I would like to update fix resistor value instead of trim potentiometer . So can I remove potentiometer and replace right resistor value ?
Thanks for key in
Attachments
Measure the resistance on both ends of the trim branch of the potentiometer and write those down. Be sure not to twist the trim. Desolder the potentiometer with desoldering pump or litze. Measure the potentiometer again and compare with earlier measurements. If your readings differ, use the last measured values. If the readings are the same, proceed and find right resistors, 0,25W and 5% accuracy are good enough, if you are picky, use 1% metal film. Solder resistors in place.
Next, measure line output (mV) of the crossover at a test frequency way below (LP) or up (HP) from X-over. Compare that with the output at the X-over frequency. The latter has to be either half or 0,7 times the former value. If that is right, you are set. Your meter has to be true RMS for audio frequencies.
In your case you are dealing with multiple potentiometers combined on one axis. Repeat above steps for every pot.
One question remains: why would you do this? You could just remove the knob.
Next, measure line output (mV) of the crossover at a test frequency way below (LP) or up (HP) from X-over. Compare that with the output at the X-over frequency. The latter has to be either half or 0,7 times the former value. If that is right, you are set. Your meter has to be true RMS for audio frequencies.
In your case you are dealing with multiple potentiometers combined on one axis. Repeat above steps for every pot.
One question remains: why would you do this? You could just remove the knob.