I'm running a biamp system: Wiim Pro streamer output split between a dsp (acting as low-pass crossover to Hafler DH220 and twin subs), and a Fosi V3 stereo (48v ps) driving Magnepan MMGWs. The Magnepans are running full range (5db down at 100Hz). I'd like to find out whether putting a high pass on the Magnepans significantly reducing signal below 100Hz would result in audible improvement (less stress on the amp, less out of band low signal on the MMGW's panels) or not. I have two options: use the dsp to insert a high pass on the Magnepans (but this would involve another A/D to D/A conversion sequence), or put a simple passive crossover on the inputs to the Fosi V3.
Anyone do anything like this with their Fosi amp(s)?
In order to calculate filter component values, I would need to know the input impedance of the V3, which I haven't been able to track down in google searches (and AI hems and haws, giving me conflicting answers); anyone know from measuring, or if there are Fosi employees who lurk here maybe you could share that spec?
Anyone do anything like this with their Fosi amp(s)?
In order to calculate filter component values, I would need to know the input impedance of the V3, which I haven't been able to track down in google searches (and AI hems and haws, giving me conflicting answers); anyone know from measuring, or if there are Fosi employees who lurk here maybe you could share that spec?
