Hey people,
a not soo much relevant question as "warm up": Two identical 8ohm chassis, same signal. Would you take two separate TDA7293 amps and drive each chassis at 8ohm, independently, or take a dual master/slave amp and wire the chassis parallel to 4ohm?
Or asked this way, may i have any disadvantages if i do the two chips one pcb/ 4ohm thing (i used such a config as (12", 50l, sealed) subwoofer-amp for about 18 month and was pretty satisfied with it's performance) ?
Each box has 4 amps, 300W toroid with 2x 25V and some buckets of µfarads.
best regards
Jochen
a not soo much relevant question as "warm up": Two identical 8ohm chassis, same signal. Would you take two separate TDA7293 amps and drive each chassis at 8ohm, independently, or take a dual master/slave amp and wire the chassis parallel to 4ohm?
Or asked this way, may i have any disadvantages if i do the two chips one pcb/ 4ohm thing (i used such a config as (12", 50l, sealed) subwoofer-amp for about 18 month and was pretty satisfied with it's performance) ?
Each box has 4 amps, 300W toroid with 2x 25V and some buckets of µfarads.
best regards
Jochen
If using two chips results you in using each of them in BTL, you might prefer the distortion performance. Not sure if the TDA7293 class AB chips benefit from that or allow that.
If that's no question, then the end thing I'd use as deciding factor, will be any possible implications on the ease of designing passive filters if they'll be used. If none of this applies, putting them in series may rack it up too high at 16 ohms, or it may perform quite fine. The 4 ohm performance, however, is pretty predictable.
If that's no question, then the end thing I'd use as deciding factor, will be any possible implications on the ease of designing passive filters if they'll be used. If none of this applies, putting them in series may rack it up too high at 16 ohms, or it may perform quite fine. The 4 ohm performance, however, is pretty predictable.