KT88 Posted January 23, 2022 Share Posted January 23, 2022 7 hours ago, Desert Noises said: Alright, I’ve been screwing around some more. Not completely satisfied with my modifications (although they helped) I decided to build my own AL-3 crossovers to get back to the original intent of these speakers. Unfortunately, I threw the original AL crossovers in the trash without first listening to them. I was going to just buy a pair of AL-3, but they are over $700 now! I successfully built a pair of AL-3s (omitting tweeter protection) and I’m pleased with how they turned out. After all that wiring and soldering, I have blisters on my fingers! Now I know why they cost what they do. I returned my La Scalas to bone stock; K-33E, K-55M, and K-77M. For the past week I’ve been critically listening to this configuration with the AL-3 crossovers. After all, this is what I’m going to stick with. Something in the AL-3 got rid of that annoying nasal/boxy/stuffy sound in the bass. Is it the 4mH inductor or the two paralleled 68uF capacitors that are responsible? Aside from that, I just prefer the sound of the good ol K-77 over the CT-120. They just have that top end sparkle. I’m feeling satisfied and my itches are being scratched in the right places. So, here I am having gone full circle with upgrades and changes. Back to original, and that’s what is best for me with the La Scala. All of the upgrade parts now live in my Clonewalls (1526C cast frame, A55G, and CT-120). Oddly enough, my Clonewalls sound about the same as they did before, except for the tweeters. I want to put some K-77s back in there. The top end sparkle is now subdued. Anyone have a good pair of K-77s for sale? I am in your boat regarding the K77. I have made the experience that I like the older Alnico type even more. But all its dependent of taste amplifier, xover etc. I had some replacement tweeter in use but I came back to the original ones. With the more so „hifi“ CT125 I was not really so happy. When listening mono to one speaker, La Scala 1977, it was obvious for me that only the K77 made a seamless melt regarding frequency blend, dispersion and sound pressure. Now again an acoustic guitar or a singing voice was coming from one source and with the authority I missed before. The sometimes criticized „fried bacon hiss“ is almost gone after some efforts to reach originality. I have really mint condition 1981 K77M which I do not longer use. So taste is different bit in your system…and you know the K77M very well it could get a second life. I bought them from ebay last summer and the source was a Heresy which looked awesome good. The seller has slaughtered a wonderful speaker in best condition because he knew that he gets more profit for the sum of the parts. The solder tap K55V dual phase plug he sold more expensive than some old Heresy will almost reach. If I were not in Cologne, Germany but in the US a deal would be a no brainer. Here my impression§s about my K77. 1 Quote Link to comment Share on other sites More sharing options...
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