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  1. Replies
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    Marchand

    I use a Marchand electronic crossover for my biamped 4345s and couldn't be happier. I have used two other before including the Ashley and the Marchand is much better with my system.
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    17,955

    Boards

    I might add these boards are solid and more then support the weight of the components. It an easy build. I wish I had them when I built my first set of cc crossovers. The instructions and...
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    Charge Coupled

    Thanks Ian, I built my crossovers a couple years ago and have been very happy. During the virus I decided to upgrade my caps on the mid and high with Carity and Jantzen. When I originally built the...
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    I wasn't sure I'm just a hack that can read a...

    I wasn't sure I'm just a hack that can read a schematic and copy what others have done. I was thinking maybe better to ground away from signal path.
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    Charged Couple Crossover

    I'm in the process of upgrading my crossovers high and mid range capacitors to Clarity CSA and Jantzen superior z. When I built these a few years ago I ran the negative from the 9v battery outside...
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    B Stock

    Not sure about B stock but I'm not what I used to be 45 years ago if you get my drift. Lots of good vibrations in that time.

    Rick
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    Crossover

    Great Job, I would like to know more about the crossover.
  8. Thread: 2420 foam

    by Ricpan
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    2,858

    foam

    I used cotton batting worked great. I will add to take the diaphragm off carefully and clean the head under the diaphragm both of mine was caked up very badly.
  9. Radian 2420

    I use a pair of Radian in my 2421 for my 4345s and think they are great. I might add that anyone that have compression drivers to pull the back off and check if the foam has deteriorated. Mine was a...
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    Ian the electronic about 40 hours. I'm a little...

    Ian the electronic about 40 hours. I'm a little slow and I wanted to do it right. The boxes I had a friend build. The hardest part was getting the stain right. Had the foilcals done. They sound...
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    New 3145 Charged-Coupled Crossover for 4345.

    Used Giskard schematic from this site and followed exactly. Primary caps are Erse PlusX and the bypass caps are Audio Cap Theta. The inductors are Jantzen Air Core and the resisters are Mills
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    Crossover

    I built the crossover from the print I got off this Web site.
  13. Replies
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    156,703

    which to collect?

    Don't see many 4344, 4344MK2 or 4345s for sale. Very few 4345s were built to start with and there are more clones around then originals. The 4315 is a nice smaller 4 way JBL Always wanted a set. The...
  14. Building a CC 3145 Crossover for my 4345s need advise

    Where do you route the negative from the 9 volt battery. What I am asking is it better to go outside of the network with the ground.
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    Speaker Connection

    I do something a little different. I solder directly to the the crossover. I have done it on my JBL 4345s and my Bozak Concert Grands. I think the metal connection on the older speakers are not very...
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    bi-amp switch

    I just finished one of my 4345s and the other is still stock. It is so much better without the switch. Thanks Ian for your help. I also bypassed the L-pad with resisters on the mid filter which...
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    bypass biamp switch

    Yes you adjust the high low crossover points and the slope on the Electovoice DX38. It is a 24 bit machine and I like it a lot. Greg at Home Audio Sound turned me on to it and he recommended it to me...
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    L pad

    What do you think of this idea? I have an Electrovoice DX38 processor. I can adjust the Db to the woofer and the Db to the high (Mid, tweeter and super tweeter). Have a fix resistor for the woofer...
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    Bypassing Bi-Amp switch on 4345s

    I have a Electrovoice DX38 so I can just bypass the switch and go straight to the woofer with the low freq. Do I have to do anything with the mids and highs?
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    Lpad

    Ian thats the way my supertweeters are set up with my Bozak Concert Grands. I guess just run a cd of pink noise and get the outputs close with a sound meter and take an Ohm reading across the lpad...
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    L pad removed

    Thinking about doing this myself on my 4345s. Did you locate the resisters near the old L pads? I also may rewire the speakers with some Dueland 16ga tinned oiled cotton wire while Im in there.
  22. Thread: Jbl 4345

    by Ricpan
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    flooding

    Water in garage but thank God did not get in house. I was stuck at work for 4 days and the wife was home alone. She would not have been able to get the speaker up to safety. A number of houses on my...
  23. Thread: 4350

    by Ricpan
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    3,018

    Manley Snapper

    I would think it should work great. Many people use Mcintosh MC275VI for the upper in stereo which is about 90 watts RMS older MC275s a little less.. You need a processor of some type. I use an...
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    Cc crossover

    Thanks very much. I think I see now on the battery. What about the positive input and the negative output? Or am I looking at it wrong. If I trace the positive input through the drawing it goes to...
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    Charged Couple Crossover question

    Looking at the schematic for the cc crossover. The 9 volt + requires a 3 Meg ohm resistor on each leg before the caps. Is this correct? Also the - battery connects to the - circuit leg . Is this...
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