lorcoll Posted April 2, 2007 Share Posted April 2, 2007 I need to know the attenuation of the TA3 autoformer in the AL network. I hope you can help me. Thanks. Lorenzo. Quote Link to comment Share on other sites More sharing options...
WMcD Posted April 2, 2007 Share Posted April 2, 2007 I believe it would be -3 dB. Gil Quote Link to comment Share on other sites More sharing options...
JohnA Posted April 3, 2007 Share Posted April 3, 2007 You could use a low voltage AC source like a wall-wart and measure the voltage difference on each side. That would let you calculate the attenuation. Still, it should be 3 dB, or so. Quote Link to comment Share on other sites More sharing options...
Guest " " Posted April 3, 2007 Share Posted April 3, 2007 I vote for -6db at 4X impeadance multiplication. It has a tap number of 3, which suggest to me that it is a stripped down version of the T2A....just does not have the tap 4 and tap 2. Quote Link to comment Share on other sites More sharing options...
BEC Posted April 3, 2007 Share Posted April 3, 2007 Really, I hate to make any flat statements about the AL crossover, because the AL is not just one thing. I have seen at least 3 different versions that were all different. I am not talking about the AL-2 and AL-3. There are at least three versions labeled just AL. Anyway, the set of AL crossovers I have does not match the schematic I have, and the autotransformer is labeled 3465 instead of T3A. I have measured the atteuation on this 3465 and it is 6 db. I have no idea if that is the same as a T3A or not. By the way, the 3465 is huge. Probably weighs twice what the T2A weighs. Bob Crites Quote Link to comment Share on other sites More sharing options...
lorcoll Posted April 3, 2007 Author Share Posted April 3, 2007 Great Bob, that is what I need (and hoped). So, the 3465 (probably the T3A) is 6db like the T5A in the AK2 (according to Steve P at Klipsch). It's very interesting for me that am building an AK2 (great only for me) starting from a bad AL type. The AK2 has the maximum squawker attenuation among all the Klipsch networks. Finally I know the only way to convert the AL type - I already have the 4mH inductors, the 140uf and the 5uf (5+8=13uf) caps to add in the circuit . The tweeter circuit is sonically perfect (the same in the AK, AK2 and AK3). Many thanks. This Forum is really fantastic. Quote Link to comment Share on other sites More sharing options...
BEC Posted April 3, 2007 Share Posted April 3, 2007 Hot off the presses (actually my email inbox). Michael Colter came through for us. Bob Crites T3A.pdf Quote Link to comment Share on other sites More sharing options...
colterphoto1 Posted April 3, 2007 Share Posted April 3, 2007 all in a day's work, no problem Bob. if you guys need anything technical like this, you have a friend on the inside. [] email at michael.colter@klipsch.com and to think some of you kidded me about making all those posts! Michael Quote Link to comment Share on other sites More sharing options...
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