Hi,
I know very little about crossover design so please bear with me.
I bought used Kappa 400 after owning Kappa 200 and liking them quite a bit but kappa 400 had issues – one was that their crossover was most definetely "tweeked" (no idea what was "tweeked") by the previous owner as tweeter was far too hot (and owning kappa 200 I know how tweeter should sound in relation to midrange driver).
Upon opening these up (sorry, no stock photo) I saw that crossovers looked fine (everything looked "stock") apart from burnt resistors (now changed to new 1 and 12 Ohm cement resitors). 1 ohm resistor was at least recognisable (both measured 1.2-1.4 Ohm, color coding was recognizable to some extent) but other resistor (now 12 Ohm) in both crossovers was badly damaged and was hard to measure correctly (it was burnt, color codes made no sense, resistors measured 13 Ohm for the better looking one and around 27 Ohm for badly burnt one; I will try to find them because I know I put them somewhere).
I really like pronounced high frequencies (I also use monitor audio GS10 and Elac jet 310 speakers and AKG K812 headphones to give you an idea) but this kappa treble is far far too bright even compared to them. My last straw was new Kef LS50 (which should be somewhat bright) which sound like sennnheiser HD650 (veiled) when compared to Kappa 400 treble monsters.
1) So basically I now have a trouble of making treble far less hot but dont know how to do it correctly since I only know hot to add in-series resistor and here resistors are in parralel as far as I can see. Please bear with my lack of knowledge but the only ther thing I can think if is to replace that 1 Ohm resistor (higher value) to reign in tweeter and replace 12 Ohm resistor (lower value) to keep midrange driver at same-ish level (bass is way too shy at the moment but that may be because of tweeter murdering everything else)
(what would be a good start?)...
2) Also I think that polarity of midrange and tweeter was reversed (as far as my skills of reading circuit boards go, that is definetely the case here, dont know of it was designed to be so...) as I get phase error every single time in audyssey XT32 when trying to calibrate kappa's (do not get this error with my other speakers)?
Would really appreciate your help as I want to my these kappa's great again. Thanks!
Edit: wasn't able to add images to a thread so here are google drive links:
Top view – Infinity kappa 400 top.jpg - Google Drive
Back view (C – capacitor; R – resistor) – Infinity kappa 400 back.jpg - Google Drive
I know very little about crossover design so please bear with me.
I bought used Kappa 400 after owning Kappa 200 and liking them quite a bit but kappa 400 had issues – one was that their crossover was most definetely "tweeked" (no idea what was "tweeked") by the previous owner as tweeter was far too hot (and owning kappa 200 I know how tweeter should sound in relation to midrange driver).
Upon opening these up (sorry, no stock photo) I saw that crossovers looked fine (everything looked "stock") apart from burnt resistors (now changed to new 1 and 12 Ohm cement resitors). 1 ohm resistor was at least recognisable (both measured 1.2-1.4 Ohm, color coding was recognizable to some extent) but other resistor (now 12 Ohm) in both crossovers was badly damaged and was hard to measure correctly (it was burnt, color codes made no sense, resistors measured 13 Ohm for the better looking one and around 27 Ohm for badly burnt one; I will try to find them because I know I put them somewhere).
I really like pronounced high frequencies (I also use monitor audio GS10 and Elac jet 310 speakers and AKG K812 headphones to give you an idea) but this kappa treble is far far too bright even compared to them. My last straw was new Kef LS50 (which should be somewhat bright) which sound like sennnheiser HD650 (veiled) when compared to Kappa 400 treble monsters.
1) So basically I now have a trouble of making treble far less hot but dont know how to do it correctly since I only know hot to add in-series resistor and here resistors are in parralel as far as I can see. Please bear with my lack of knowledge but the only ther thing I can think if is to replace that 1 Ohm resistor (higher value) to reign in tweeter and replace 12 Ohm resistor (lower value) to keep midrange driver at same-ish level (bass is way too shy at the moment but that may be because of tweeter murdering everything else)
(what would be a good start?)...
2) Also I think that polarity of midrange and tweeter was reversed (as far as my skills of reading circuit boards go, that is definetely the case here, dont know of it was designed to be so...) as I get phase error every single time in audyssey XT32 when trying to calibrate kappa's (do not get this error with my other speakers)?
Would really appreciate your help as I want to my these kappa's great again. Thanks!
Edit: wasn't able to add images to a thread so here are google drive links:
Top view – Infinity kappa 400 top.jpg - Google Drive
Back view (C – capacitor; R – resistor) – Infinity kappa 400 back.jpg - Google Drive
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