G Evans Posted March 6, 2001 Share Posted March 6, 2001 Those of you ( Les /Al .. ) who've tinkered with this Heritage xo will know there is what appears to be a thermistor in parallel with a 100 ohm resistor as tweeter protection instaed of the shunt zeners used in earlier designs. My query is whether the mods made to the AL-3 involve removing this prtotection by shoting out the thermsitor/resisor. The thermistor measures about 2ohms COLD. Was this taken into account in the mod ? i.e. by putting in a 2 ohm resistor in place of the thermsitor in order not to shift the tweeter xo frequency. ( as 2 ohms is a fair fraction of the tweeter 8 ohm impedance). George Quote Link to comment Share on other sites More sharing options...
bill rawls Posted March 7, 2001 Share Posted March 7, 2001 Klipsch used to warranty their drivers for life, then people started using more powerful amps, i.e. greater than 12 watts. Shortly thereafter, Paul added the tweeter protection. The older tweeters (cylendrical magnets) are irreplacable. I would protect my tweeters at all cost. Regards, Bill Rawls Quote Link to comment Share on other sites More sharing options...
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