Boomzilla Posted April 19, 2011 Share Posted April 19, 2011 I hooked up my Heresy speakers to my amp - no sound from the right squawker or tweeter - *^%^&_*... I then took the back off the speaker & checked the squawker & tweeter with a VOM - GOOD CONTINUITY! I have type E crossovers. I've never heard of a blown crossover - normally the drivers die first. What's going on? Quote Link to comment Share on other sites More sharing options...
Budman Posted April 19, 2011 Share Posted April 19, 2011 recheck all connections on the crossover. loosen and retighten all screws. Quote Link to comment Share on other sites More sharing options...
djk Posted April 20, 2011 Share Posted April 20, 2011 If the drivers are good, then the 2µF cap going from the input terminal to tap #5 on the autoformer is bad. Quote Link to comment Share on other sites More sharing options...
Boomzilla Posted April 20, 2011 Author Share Posted April 20, 2011 Thanks to all - I'll verify the wiring, tighten the screws, and test the cap. If the cap is bad, would it be prudent to just replace both crossovers with a pair of Mr. Crites' models? I'd assume that if the parts are old enough for some to begin failing, then it is likely that others are either shifted in electrical performance or are prone to failure as well. On the other hand, the autoformer is unlikely to fail at all, so maybe just a full capacitor replacement would cure the issues? Thanks. Quote Link to comment Share on other sites More sharing options...
djk Posted April 20, 2011 Share Posted April 20, 2011 I would just buy the cap kit from Bob (or the vendor of your choice), that should be fine. Quote Link to comment Share on other sites More sharing options...
HudsonValleyNoah Posted April 20, 2011 Share Posted April 20, 2011 Thanks to all - I'll verify the wiring, tighten the screws, and test the cap.... How will you test the cap? Quote Link to comment Share on other sites More sharing options...
HudsonValleyNoah Posted April 20, 2011 Share Posted April 20, 2011 I hooked up my Heresy speakers to my amp - no sound from the right squawker or tweeter - *^%^&_*... I then took the back off the speaker & checked the squawker & tweeter with a VOM - GOOD CONTINUITY!... BTW, It is very possible to have good continuity an still have a bad driver. Furthermore even with a DCR (as opposed to continuity) in the right range, you can still have a bad motor (that may have locked the VC yet did not whack the DCR so low as to be out off spec.) Noah Quote Link to comment Share on other sites More sharing options...
Boomzilla Posted April 21, 2011 Author Share Posted April 21, 2011 How will you test the cap? To test a cap, lift one of the leads and then use a meter (available online or at Radio Shack) to read the capacitance. If I get the same reading on the "bad" speaker and the "good" speaker, then the suspect capacitor is probably OK. Otherwise, it's time to replace. Quote Link to comment Share on other sites More sharing options...
Boomzilla Posted April 21, 2011 Author Share Posted April 21, 2011 ...It is very possible to have good continuity an still have a bad driver.,, True, but when I tested, each driver also made noise! If I've got not only the expected resistance but also noise from the driver, am I right in concluding that the drivers are OK? Quote Link to comment Share on other sites More sharing options...
djk Posted April 21, 2011 Share Posted April 21, 2011 Jumper the 2µF cap going from the input to terminal #5 on the autoformer (T2A). If the cap is bad the mid and tweeter should play. If you keep the volume down you cannot hurt anything. If the mid plays, but the tweeter does not, then the other 2µF cap is also bad. Do not try and jump the tweeter cap. Quote Link to comment Share on other sites More sharing options...
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