Anakin26 Posted August 20, 2005 Share Posted August 20, 2005 I just made diagrams of the RF-7 crossovers. Looks like the HF-x-over inverts the horn´s phase for some reason. I don´t know if I can post them here?! Will anybody mind or the other way around... anyone interested in them? Nick Quote Link to comment Share on other sites More sharing options...
WMcD Posted August 20, 2005 Share Posted August 20, 2005 Yes, everyone will be interested. So please do. Klipsch does not give out schematics on units which are in production. They have given us schematics on older units. BTW, many thanks. It seems to me you are asking a deeper question. If I have made an analysis of a crossover, and wish to publish it here, will "the powers that be" step on it? Be offended? Ban you? Report you to the Thought Police? No, I don't think so. Smile. Gil Quote Link to comment Share on other sites More sharing options...
Deang Posted August 21, 2005 Share Posted August 21, 2005 If you post the schematic, I'm sure Klipsch will remove it. Quote Link to comment Share on other sites More sharing options...
WMcD Posted August 21, 2005 Share Posted August 21, 2005 I'm not aware of the webmaster here removing any technical information. Boneheaded insults, improper political subjects, yes. We all realize that what you post is your impression and no guarantee that the factory approves, agrees, doesn't agree, etc. E.g. if we post something and then ask, "Is this correct?", then they're going to be silent. Gil Quote Link to comment Share on other sites More sharing options...
Anakin26 Posted August 21, 2005 Author Share Posted August 21, 2005 Hm... maybe someone from Klipsch can comment on that? Amy? Dean, if you feel they shouldn´t be posted here, let me know. As Gil said though, there is no guarantee my drawings are correct. Nick Quote Link to comment Share on other sites More sharing options...
Anakin26 Posted August 22, 2005 Author Share Posted August 22, 2005 Some interesting news. I sent the schematics to the guy at mundorf today. He checked them and told me two interesting things: 1) The HF X-over is either a very weird construction or I got something wrong when drawing the schematic. For some reason I get the feeling, the latter is the case... 2) The 1 ohm resistor on the lf x-over made him wonder too. He told me that this kind of setup is normally used to dampen the voice coil and to make the speaker more impedance stable, but he would have expected the resistor to be around 6 - 10 ohms. Well... I off course have no idea whether this is a good thing or not. He said we should go with the factory setup and stick with 1 ohm. Nick Quote Link to comment Share on other sites More sharing options...
KlipsDude Posted August 23, 2005 Share Posted August 23, 2005 Post away, we're waiting for it. Quote Link to comment Share on other sites More sharing options...
Anakin26 Posted August 24, 2005 Author Share Posted August 24, 2005 Well, the guy at mundorf was right. I messed up on the hf schematic. I took the crossover out again last night and altered the diagram. Now everything should be correct. I know the symbols are weird and not technically correct, but they work for me! Nick Quote Link to comment Share on other sites More sharing options...
Anakin26 Posted August 24, 2005 Author Share Posted August 24, 2005 The LF x-over. The outputs off course connect to both woofers. Quote Link to comment Share on other sites More sharing options...
Anakin26 Posted August 24, 2005 Author Share Posted August 24, 2005 The HF x-over. Quote Link to comment Share on other sites More sharing options...
WMcD Posted August 28, 2005 Share Posted August 28, 2005 What you've posted does make sense. I'm reminded of the movie, Who Killed Roger Rabbit. The woman says, "I'm not bad, I'm just drawn that way." The woofer is a second order low pass. The tweeter is a third order high pass. This is the more difficult to "read". The series circuit along the bottom is a Zobel. BTW, it seems that Dr. Zobel worked for Bell Labs starting almost a century ago. I've not suceeded in getting a copy of the Bell Lab publication on the subject. However.the problem is that the crossover filter design is best if the load is without peaks in elecrical impedance, or in fact any variation. However, all drivers have a peak of elecrical impedance at mechanical resonance.. The Zobel ciircuit with L and C and R have a dip in impedance, calculated to be at the same frequency. So they balance out. Gil Quote Link to comment Share on other sites More sharing options...
Deang Posted August 28, 2005 Share Posted August 28, 2005 ! Quote Link to comment Share on other sites More sharing options...
Anakin26 Posted August 29, 2005 Author Share Posted August 29, 2005 Dean... there is no question about it.... your schematics have the professional look. Mine look like they were drawn by a six year old kid. Then again... I AM a six year old kid when it comes to electronics! ;-) Nick Quote Link to comment Share on other sites More sharing options...
Deang Posted August 29, 2005 Share Posted August 29, 2005 Maybe, but you're new at this. Two years ago I could barely understand a schematic much less trace a PCB. The fact that you are willing to learn and get your hands in there to find out what's going on is commendable! Quote Link to comment Share on other sites More sharing options...
dunglass Posted July 28, 2007 Share Posted July 28, 2007 Hello Anakin. Where are you knowing the values of the coils from? Regards D. Quote Link to comment Share on other sites More sharing options...
pite Posted March 3, 2011 Share Posted March 3, 2011 Something seems to be wrong! The +ve and -ve terminal are shorted? Looks like the -ve and +ve on INPUT side are swapped. Quote Link to comment Share on other sites More sharing options...
djk Posted March 5, 2011 Share Posted March 5, 2011 It's correct, the output polarity is inverted. Quote Link to comment Share on other sites More sharing options...
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