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PRIMARY QUESTION:
What is supposed to be the nominal resistor values for the tweeter crossover network.
Have had these speakers for years now and they are great! Problem is after a few glasses of whisky I tend to drive them at their limits. The speakers themselves are fine but the crossover board not so much. I removed both channels' crossover boards and on both the 2 wirewound resistors are burnt to a crisp (but still functional). On both crossovers the subwoofer capacitor is bulging, along with one of the mid-range caps. Figuring out the capacitance value is simple, its written on it. Problem is the resistors. I know they are 10W but the model number after doesnt bring up anything on google. Furthermore, because of the excess power they couldn't handle, the surface of the crossover board is scorched so the original writing is missing. When I measure them removed from the circuit I get a consistent 4.1 OHM reading on on resistor that is installed parallel in the circuit (I believe they are 4ohm nomimal. But on the other resistor (the one in series) reads ~4.7ohm and the the one from the other crossover reads ~8ohm. Therefore one of the resistors are damaged and giving an incorrect reading (im leaning towards its the 8ohm resistor reading that is damaged). I also plan to upgrade to 20w wirewound resistors to help prevent further excess damage to the crossover boards. I do understand that the failure of the one resistor in a sense is acting as a "fuse" and upgrading to 20w is effectively increasing the "fuse" rating which would make the tweeter susceptible to damage.
Luckily removing the crossover boards out of the speakers isnt too bad. The only modification I have to do is reconnect the midrange wiring as I had to cut it in half. Luckily my arm fits up to the tweeter so i can re-route that wiring once repairs are completed, otherwise its nice open space down at the subs to reconnect everything.
Any help is appreciated.
Equipment:
Speakers - (2) - A5rx-c
Amp - Parasound halo integrated
****
I know, i know, "Turn your **** down!"
But I dont want too....
What is supposed to be the nominal resistor values for the tweeter crossover network.
Have had these speakers for years now and they are great! Problem is after a few glasses of whisky I tend to drive them at their limits. The speakers themselves are fine but the crossover board not so much. I removed both channels' crossover boards and on both the 2 wirewound resistors are burnt to a crisp (but still functional). On both crossovers the subwoofer capacitor is bulging, along with one of the mid-range caps. Figuring out the capacitance value is simple, its written on it. Problem is the resistors. I know they are 10W but the model number after doesnt bring up anything on google. Furthermore, because of the excess power they couldn't handle, the surface of the crossover board is scorched so the original writing is missing. When I measure them removed from the circuit I get a consistent 4.1 OHM reading on on resistor that is installed parallel in the circuit (I believe they are 4ohm nomimal. But on the other resistor (the one in series) reads ~4.7ohm and the the one from the other crossover reads ~8ohm. Therefore one of the resistors are damaged and giving an incorrect reading (im leaning towards its the 8ohm resistor reading that is damaged). I also plan to upgrade to 20w wirewound resistors to help prevent further excess damage to the crossover boards. I do understand that the failure of the one resistor in a sense is acting as a "fuse" and upgrading to 20w is effectively increasing the "fuse" rating which would make the tweeter susceptible to damage.
Luckily removing the crossover boards out of the speakers isnt too bad. The only modification I have to do is reconnect the midrange wiring as I had to cut it in half. Luckily my arm fits up to the tweeter so i can re-route that wiring once repairs are completed, otherwise its nice open space down at the subs to reconnect everything.
Any help is appreciated.
Equipment:
Speakers - (2) - A5rx-c
Amp - Parasound halo integrated
****
I know, i know, "Turn your **** down!"
But I dont want too....
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