BR928 Posted March 6, 2020 Share Posted March 6, 2020 Does anyone have a schematic for the crossover used on the MCM? The stack I have is a four way. The tag says it is Type M-4. The caps have values on them but the chokes only have part numbers. Quote Link to comment Share on other sites More sharing options...
Marvel Posted March 6, 2020 Share Posted March 6, 2020 Try this... MCM4 way.pdf Quote Link to comment Share on other sites More sharing options...
BR928 Posted March 6, 2020 Author Share Posted March 6, 2020 That looks close, but my network has more components that that. It also uses the 2" Gauss mid driver and not the 4 barrel manifold. Not sure how much that would change it. It's also using 20 mF caps. Quote Link to comment Share on other sites More sharing options...
Marvel Posted March 6, 2020 Share Posted March 6, 2020 I noticed it didn't look like the same crossover. I will look to see if I can find some other of the M-4 If you list the inductor number, someone at Klipsch may know the values: 2357 2359 2360 and so on... Quote Link to comment Share on other sites More sharing options...
BR928 Posted March 6, 2020 Author Share Posted March 6, 2020 Everything seems to be the same except the MSM section. It has two caps, two chokes and a tap. See markup. The inductors are as follows: 2133 two of these in the MWM section 2357 MSM section 2358 MSSM section 2359 MSM section 2360 MSSM section TA2 MSM section Quote Link to comment Share on other sites More sharing options...
glens Posted March 7, 2020 Share Posted March 7, 2020 Are you thinking the inductors will need replacement? Quote Link to comment Share on other sites More sharing options...
BR928 Posted March 8, 2020 Author Share Posted March 8, 2020 I am just trying to get an accurate schematic to determine the crossover points. Possibly update it if any components have broken down. Quote Link to comment Share on other sites More sharing options...
Marvel Posted March 9, 2020 Share Posted March 9, 2020 Usually, the inductors wil not deteriorate, although they can look pretty old and ratty. Those caps I would say most definitely have gone downhill. While the capacitance may be ok, their esr, or equivalent series resistance has increased, which is not a good thing. Quote Link to comment Share on other sites More sharing options...
BR928 Posted March 9, 2020 Author Share Posted March 9, 2020 What would be a good equivalent to replace them with? Brand? Type? Quote Link to comment Share on other sites More sharing options...
glens Posted March 9, 2020 Share Posted March 9, 2020 Why? Quote Link to comment Share on other sites More sharing options...
BR928 Posted March 9, 2020 Author Share Posted March 9, 2020 2 hours ago, glens said: Why? Really? Do you think these have not degraded in 40 years? One cap has already been replace. I would like to know what is the best replacements. Quote Link to comment Share on other sites More sharing options...
glens Posted March 9, 2020 Share Posted March 9, 2020 I thought you were inquiring about the inductors, for some reason. Sorry. Quote Link to comment Share on other sites More sharing options...
BR928 Posted March 9, 2020 Author Share Posted March 9, 2020 I would like to know the values of the inductors if anyone can tell me from the klipsch part numbers. Quote Link to comment Share on other sites More sharing options...
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