Rob's Klipsch Posted January 28, 2004 Share Posted January 28, 2004 Hello, I have been looking at my AL crossovers and have noticed that my woofer is wired out of phase on each one. I am not talking about where the cable that goes to the woofer connects, but on the crossover itself. Is this normal? I know that on ALK's designs he flips the squawker output to make up for an invert in the crossover itself. Is the old AL similar? Am I crazy? Thanks, Rob Quote Link to comment Share on other sites More sharing options...
JohnA Posted January 28, 2004 Share Posted January 28, 2004 The woofer is not inverted, the squawker and tweeter are, They should be due to phase shifts caused by their respective filters. Quote Link to comment Share on other sites More sharing options...
Rob's Klipsch Posted February 1, 2004 Author Share Posted February 1, 2004 Thank you very much for the reply! Rob Quote Link to comment Share on other sites More sharing options...
Dale W Posted February 6, 2004 Share Posted February 6, 2004 ---------------- On 1/28/2004 7:25:15 AM John Albright wrote: The woofer is not inverted, the squawker and tweeter are, They should be due to phase shifts caused by their respective filters. ---------------- Hey john , I've got these crossovers in my 87's . Is there anything worth updating in your opinion ? Quote Link to comment Share on other sites More sharing options...
JohnA Posted February 6, 2004 Share Posted February 6, 2004 I'd Keep the T3A. I had a pair of '87 La Scalas; my brother has them now. As soon as I could get Al to make a set of crossovers, I replaced them. If you are not going to build a set of ALKs, I'd turn the Type ALs into Type AAs or this: Quote Link to comment Share on other sites More sharing options...
Al Klappenberger Posted February 7, 2004 Share Posted February 7, 2004 To whoever is interested, I give a thumbs up to the network design posted above by John. This is a "correct" 6 dB/octave network. If you are considering building a type "A", don't, build that instead! Al K. Quote Link to comment Share on other sites More sharing options...
linkalley Posted February 11, 2004 Share Posted February 11, 2004 john, what frequency does the tweet kick in?? which tweet??? link alley Quote Link to comment Share on other sites More sharing options...
JohnA Posted February 11, 2004 Share Posted February 11, 2004 The -3 dB point for the tweeter is 6000 Hz. It will work with any 8 ohm K-77-x or T-35x. The bulb and resistor form a 1 dB L-pad and tweeter protector. The Heritage tweeters are really 105 dB/w/m, but Klipsch dealt with that using lossy tweeter circuits in some of their crossovers. As a result, the tweeter is hot to me since I'm used to the Type AA network. The bulb will limit long term power to the tweeter to about 2 watts or so, as best as I can measure and simulate with DC. It will not seriously effect transients. The K-77 has a power rating of 2 watts continuous/20 watts program and the K-77-M has a 5/50 watt rating. Unless you have drunks or teenagers running your system, the bulb should be plenty. It won't be as harsh as the diodes Klipsch once used and about as good as the polyswitch they use now. Quote Link to comment Share on other sites More sharing options...
Deang Posted May 17, 2004 Share Posted May 17, 2004 My understanding is that the diodes don't anything unless a surge type transient "activates" them to protect the tweeter. They're also not in series with the tweeter -- do they really cause harshness? Has anyone tried leaving the zeners in place AFTER making a cap change? Quote Link to comment Share on other sites More sharing options...
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