Deang Posted January 29, 2018 Share Posted January 29, 2018 Very nice. I think you should give the Type A a try. 2 Quote Link to comment Share on other sites More sharing options...
wvu80 Posted January 29, 2018 Share Posted January 29, 2018 19 minutes ago, Deang said: The Type A is 6dB/octave all the way around - it unloads a lot of power to the tweeter. It works great for low level listening, and/or smaller rooms. The sound is very crisp and dynamic. For my environment - it’s my favorite. The Type AA has a 18dB/octave tweeter filter, so less power is being delivered to the tweeter at any given volume level (when compared to the Type A). So, it’s a little more forgiving at live listening levels - and doesn’t stress the tweeter as much. Wow, I had never heard that before. I was under the impression the only difference between the Type A and AA was simply the addition of zenner diodes to the AA to protect the tweeters. Obviously not. Great explanation and thanks, I just adjusted my personal database with the correct information. Quote Link to comment Share on other sites More sharing options...
Deang Posted January 29, 2018 Share Posted January 29, 2018 @jimjimbo https://www.the12volt.com/caraudio/cross.asp#powera Scroll down to “Acoustical output and Power”. Quote Link to comment Share on other sites More sharing options...
Deang Posted January 29, 2018 Share Posted January 29, 2018 Dave, PK added the zeners because early solid state had nasty turn on/off transients - and were taking out tweeters by the boatload. Back then, Klipsch had a lifetime warranty - and Klipsch was taking a beating by having to replace them. These days, the zeners aren’t necessary - unless you’re running a Phase Linear or Dynaco 400! Quote Link to comment Share on other sites More sharing options...
DizRotus Posted January 29, 2018 Share Posted January 29, 2018 3 minutes ago, Deang said: These days, the zeners aren’t necessary - unless you’re running a Phase Linear or Dynaco 400! I must have blown 6 or 7 of the diaphragms in the T35s in my four Speakerlab SKhorns in the 70s using a Dynaco 400 (300 Watts/channel into the four ohm load). In those days a call to EV would have a new diaphragm and an invoice in the mail immediately. Quote Link to comment Share on other sites More sharing options...
jimjimbo Posted January 30, 2018 Share Posted January 30, 2018 1 hour ago, wvu80 said: Wow, I had never heard that before. I was under the impression the only difference between the Type A and AA was simply the addition of zenner diodes to the AA to protect the tweeters. Obviously not. Great explanation and thanks, I just adjusted my personal database with the correct information. Good stuff, that's exactly why I asked.... 1 Quote Link to comment Share on other sites More sharing options...
avguytx Posted January 30, 2018 Share Posted January 30, 2018 Crossover slopes and how they're wired. http://www.apicsllc.com/apics/Misc/filter2.html Quote Link to comment Share on other sites More sharing options...
mustang guy Posted January 30, 2018 Share Posted January 30, 2018 7 hours ago, wvu80 said: Agree. I've never heard the Type AL-3 but it has a reputation for being a good one. I have owned Type AA in La Scala and Khorns. It is a very smooth, very listenable crossover at all SPL levels. Good job of troubleshooting that woofer problem, and welcome to the Klipsch forums! Yeah you have. That's what I run. 2 Quote Link to comment Share on other sites More sharing options...
JohnA Posted January 30, 2018 Share Posted January 30, 2018 4 hours ago, wvu80 said: Wow, I had never heard that before. I was under the impression the only difference between the Type A and AA was simply the addition of zenner diodes to the AA to protect the tweeters. Obviously not. Great explanation and thanks, I just adjusted my personal database with the correct information. Due to the selection of parts to add a sag in the tweeter response just above 6k (EQ) the slope of the tweeter filter below 6k is actually 21 Db/octave. It is good protection for a K-77-M tweeter. Quote Link to comment Share on other sites More sharing options...
Marvel Posted January 30, 2018 Share Posted January 30, 2018 Type A would be excellent for your situation. After having tired AL crossovers in there, I think you would be amazed. Welcome to the forums. Bruce Quote Link to comment Share on other sites More sharing options...
Olomana Posted January 30, 2018 Author Share Posted January 30, 2018 Thank you for your help. excited to call Bob and make my order, gonna go with the type A crossover. Don't you hate it when work get in the way with ordering stereo gear or a new album. I saw an interesting thread about transforming the AL to a AA or something like that for less than $150? I may try this in the summer when I have time to find my soldering iron. 1 Quote Link to comment Share on other sites More sharing options...
jimjimbo Posted January 31, 2018 Share Posted January 31, 2018 Dean, does the type A take to the mod where you change to a 6.8uf cap and move tap 4 to tap 3 on T2A in order to tame the midrange a bit? Or, based on the type A config, is this even necessary/worthwhile? @Deang Quote Link to comment Share on other sites More sharing options...
Deang Posted January 31, 2018 Share Posted January 31, 2018 Yep, same deal. Quote Link to comment Share on other sites More sharing options...
Olomana Posted January 31, 2018 Author Share Posted January 31, 2018 x-overs in the mail!! cant wait. Quote Link to comment Share on other sites More sharing options...
jimjimbo Posted January 31, 2018 Share Posted January 31, 2018 1 hour ago, Deang said: Yep, same deal. Thank you sir. Quote Link to comment Share on other sites More sharing options...
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