Hi filigran
- Welcome to the Forum !
Some Observations :
(a) About Capacitors ;
- It appears that you are blaming the lack of highs & mids on the use of Mundorf capacitors . Was that your intent ? ( or did I read your post wrong ? )
No, I just said that the values used are so that the reduction is like I wrote, the info came from Mundorf direct, which were very helpful (esp. Mr. Ralf Schreiber) and send me a table which values for the "L-PAD"-Resistors gives which reduction. I said nothing about quality of mundorf caps! I don´t know since now if they were super or a waste of money...
- Mundorf sells a few different models of capacitors . Which type/line do you have in your crossover ? ( A posted picture would be useful that shows these capacitors )
There are some Supreme Caps and some MKP Audiophile Caps, picture will follow.
- It also seems that you are saying that because Mundorf caps are now present in your crossover , that you need to change the available choices for UHF padding . Is this interpretation correct ?
Yes, I will change the Resistors, when the shipment from Mundorf arrives, but perhaps I try first the original network.
(b) About the woofer polarity as found in various 250(xx) models ;
- It appears that you doubt your modified crossovers have the original woofer polarity as intended by the designer(s) .
- Yes, getting the woofer polarity "wrong/backwards" can result in creating a sonic hole in the crossover region.
- It sounds like you have some network schematics for the 250(xx) .
I have network schematics for N250TI, N250Ti BQ and 250Ti Jubilee and the modiefied (unbiased) Mundorf Jubilee version. Unfortunatelly there is no systematic [(+)/(-) vs. red/black] how the polarity is to the single chassis
- Do you have all the various 250(xx) schematics ?
I think so, someone else more?
- Have you compared the woofer polarities within these different schematics ?
Woofer is signed with (+) "outward movement" in BQ and Jubl. schematics
Exact, And when I connected the red Connector of the Chassis (not the box) to a pos. 1.5V battery the cone moves inward!
- I suggest that you open up the speaker and make notes on the various colors of the wiring ( as found in your model ). Then post that info on "wire-colors" , here in this thread .
The problem is the connection labelled with "Strip and Tin" at Woofer and MF which can be connected in two ways in oppsite to the male/female connectors of the HF and UHF. Btw in N250Ti BQ the UHF Chassis 035TiA-1 is marked (-), in the Jubilee version the gold plated UHF (035TiA-2 ??) is marked (+) in the schematics.