3dzapper Posted July 18, 2005 Share Posted July 18, 2005 What do you think? Are these tybe B crossovers from my 1975 Cornwalls original or somebody's idea of a bad joke? In my first review of these Corns, I said that the mids were "brittle" sounding. I wonder why. These CDE (Cornell Dublier) caps are cute though! Rick PS: The caps in the background are the replacements. Quote Link to comment Share on other sites More sharing options...
BEC Posted July 18, 2005 Share Posted July 18, 2005 ---------------- On 7/18/2005 5:20:08 PM 3dzapper wrote: What do you think? Are these tybe B crossovers from my 1975 Cornwalls original or somebody's idea of a bad joke? In my first review of these Corns, I said that the mids were "brittle" sounding. I wonder why. These CDE (Cornell Dublier) caps are cute though! http://forums.klipsch.com/idealbb/files/typeB.jpg" border="0"> Rick PS: The caps in the background are the replacements. ---------------- Looks like some of these I found in some original Type AA crossovers. Yes, they are someone at Klipsch idea of a bad joke I think. Truly some of the worst caps I have ever encountered. Bob Quote Link to comment Share on other sites More sharing options...
Duke Spinner Posted July 18, 2005 Share Posted July 18, 2005 they were quite common in the 70's, early '80's ..... Quote Link to comment Share on other sites More sharing options...
3dzapper Posted July 18, 2005 Author Share Posted July 18, 2005 We learn something new every day. Rick Quote Link to comment Share on other sites More sharing options...
3dzapper Posted July 18, 2005 Author Share Posted July 18, 2005 Better? http://forums.klipsch.com/idealbb/files/b221.jpg Review later. Rick Quote Link to comment Share on other sites More sharing options...
Deang Posted July 18, 2005 Share Posted July 18, 2005 Nice P-trap. Save those caps, you never know when you might need a 48 ohm resistor. Quote Link to comment Share on other sites More sharing options...
BEC Posted July 18, 2005 Share Posted July 18, 2005 Yes, better but the caps are still a bit too yellow for me. I give it a 9.3. Bob Quote Link to comment Share on other sites More sharing options...
3dzapper Posted July 18, 2005 Author Share Posted July 18, 2005 I'm not Nadia Comanichi (sp?) a 9.3 is good to me! Rick Quote Link to comment Share on other sites More sharing options...
3dzapper Posted July 19, 2005 Author Share Posted July 19, 2005 ---------------- On 7/18/2005 8:27:47 PM DeanG wrote: Nice P-trap. Save those caps, you never know when you might need a 48 ohm resistor. ---------------- Oh you noticed? Did you also see all the DeanG hot melt? Rick Quote Link to comment Share on other sites More sharing options...
colterphoto1 Posted July 19, 2005 Share Posted July 19, 2005 Nicely done Rick! You're on your way. I just got in contact with Bob about getting all mine done- 13 in all - yeouch. Some will be new (LS AL's no more), some I'll probably let Bob rebuild and I'd like to do a couple just for the fun of it. Michael Quote Link to comment Share on other sites More sharing options...
Al Klappenberger Posted July 19, 2005 Share Posted July 19, 2005 Bob, That little yellow cap is simply SHOT! I got one just like it that also came out of a Klipsch network. It's not nearly so bad! The ESR on it is only .365 Ohms. It's a lot closer to 2.0 uF too. Al K. Quote Link to comment Share on other sites More sharing options...
BEC Posted July 19, 2005 Share Posted July 19, 2005 Al, That is my picture that I like to show people who think reading capacitance is good enough. Notice that thing is still in spec on capacitance but with 48 ohms ESR you sure won't get much signal through it. Bob Quote Link to comment Share on other sites More sharing options...
BEC Posted July 19, 2005 Share Posted July 19, 2005 Just so it doesn't look like I am picking on little yellow caps, here is another example from a Type AA crossover. Bob Crites Quote Link to comment Share on other sites More sharing options...
thebes Posted July 19, 2005 Share Posted July 19, 2005 Well my '77 cornies came with those shiny cans that look like they should be holding pipe tobacco, not those yellow thingies. Wonder if that is one of them that Bob's got on display. So what should the values read? Got to check up to make sure Bob dind't slip in an old pair he used chrome polish on. Quote Link to comment Share on other sites More sharing options...
3dzapper Posted July 19, 2005 Author Share Posted July 19, 2005 Ole bob wouldn't do that. Would he????? Thanks Michael. Just the caps I used for your 13 Xovers would run you over a grand. Bob's repolished stuff is a great deal. I highly recommend the P-traps with spring terminal K-55s. The parts can be had for about 3-4 each dollars from Parts Express. Rick Quote Link to comment Share on other sites More sharing options...
BEC Posted July 19, 2005 Share Posted July 19, 2005 Guess I should show what a shined up-- I mean good new cap tests like. This one is a 2 uF and you might notice that it reads darned near that. Low numbers are good on the ESR, but are of less importance if you are going to use a P-trap. Bob Quote Link to comment Share on other sites More sharing options...
thebes Posted July 19, 2005 Share Posted July 19, 2005 Well I opened up those cans and tobacco did fall out! Bob will probably try to convince me that it's really esoteric magnetic shavings designed to realign the thingabobber with the whatchamacallit. I read previously about these here P-traps, but Rick's a born again liar so I was wondering why a Possum Trap would do anything for sound besides remind me of the yelling I did when I stepped on one once? So I've got a mutlitmeter (sounds foreign to me-how many inches are there in a meter anyway) lots of settings, should I use Ohlmie (that's white for Homie) setting or something else? Quote Link to comment Share on other sites More sharing options...
customsteve01 Posted July 19, 2005 Share Posted July 19, 2005 I thought a P trap was part of a sink drain. see how much you learn reading the forum. still dont know what it does but I now know there can be one in a crossover. Just not sure how a bent piece of pipe helps make a speaker sound better. Steve Quote Link to comment Share on other sites More sharing options...
BEC Posted July 19, 2005 Share Posted July 19, 2005 ---------------- On 7/19/2005 8:17:15 PM thebes wrote: Well I opened up those cans and tobacco did fall out! Bob will probably try to convince me that it's really esoteric magnetic shavings designed to realign the thingabobber with the whatchamacallit. I read previously about these here P-traps, but Rick's a born again liar so I was wondering why a Possum Trap would do anything for sound besides remind me of the yelling I did when I stepped on one once? So I've got a mutlitmeter (sounds foreign to me-how many inches are there in a meter anyway) lots of settings, should I use Ohlmie (that's white for Homie) setting or something else? ---------------- Readings such as those above are not obtained by using the typical multimeter. But then the meter shown above is almost useless for doing anything your normal multimeter will do. You have to have a deep burning desire to know what is going on inside capacitors and inductors to want to spend what one of these meters costs. Bob Quote Link to comment Share on other sites More sharing options...
3dzapper Posted July 19, 2005 Author Share Posted July 19, 2005 Steve, On push terminal K-55s a P-trap blocks the return peaking at 9Khz as seen in this plot done by Al K: Klipsch networks rely on the natural roll-off of the K-55 above 6KHz in crossing over to the tweeter. The comback after the drop off is audible and is IMO a distraction. It seems to me to cause a "honk" in piano, vibraphone and horns in the harmonics of C over middle C or there abouts. It used to really drive me nuts. Rick Quote Link to comment Share on other sites More sharing options...
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