Hi, I'm just doing a mini project with a friend, to convert Fortura 10 speakers which feature Heil AMT tweeters, to DSP active speakers.
Photos of the passive crossovers attached.
The original passive crossover is at 1800 Hz.
The wiring is direct from power amp to woofer. DAC/Pre controls the volume.
Obviously DAC volume is at minimum to start and I gradually increase volume to run sweeps, till I get to about 75 dBFS.
Lower risk of damaging the drivers with this gradual progression from lowest volume to 75 dBFS.
After measuring the woofer I then swapped over the same speaker cables over to the tweeter.
With microphone 1 inch from the woofer I ran a sweep on the woofer from 20 Hz to 2kHz and it's pretty flat.
I ran a sweep on the tweeter from 1600 Hz to 20kHz and I get small popping sounds... not the sweep sound I was after :-(
I assume there is something different required with wiring the AMT tweeter to the power amp, compared to standard cone woofer.
Does anyone know what I might be doing wrong?
Or should it work with similar wiring to the woofer - except different sweep ranges (which I have done).
Any help appreciated !
Photos of the passive crossovers attached.
The original passive crossover is at 1800 Hz.
The wiring is direct from power amp to woofer. DAC/Pre controls the volume.
Obviously DAC volume is at minimum to start and I gradually increase volume to run sweeps, till I get to about 75 dBFS.
Lower risk of damaging the drivers with this gradual progression from lowest volume to 75 dBFS.
After measuring the woofer I then swapped over the same speaker cables over to the tweeter.
With microphone 1 inch from the woofer I ran a sweep on the woofer from 20 Hz to 2kHz and it's pretty flat.
I ran a sweep on the tweeter from 1600 Hz to 20kHz and I get small popping sounds... not the sweep sound I was after :-(
I assume there is something different required with wiring the AMT tweeter to the power amp, compared to standard cone woofer.
Does anyone know what I might be doing wrong?
Or should it work with similar wiring to the woofer - except different sweep ranges (which I have done).
Any help appreciated !