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In Reply to: RE: Simplify Sansui Speaker Crossovers And Enjoy posted by Crazy Dave on October 19, 2016 at 07:00:54
"even stock, they are a much better sounding speaker than Klipsch Heresy, which I also own."
Wow now this is encouraging! I really excited to get mine operational!
Those crossover modifications sound interesting too - did you compare it to the original crossovers with original components, or to rebuilt original crossovers? I need beg/borrow/buy some sort of calibrated mic before I go down that path though. I've done before/after recap frequency response plots of other 1970s speakers when I had access to a calibrated mic and the difference is not subtle.
Follow Ups:
Changed x-overs out of curiosity, maxhifi. Was amazed by increase in clarity-n-clout in modded vs stock. Unlike SP-2500s, SP-1500s already had decent bass response. Adding 10 uf polyprop to larger Coral mid driver solidified nether region, whilst unleashing robust alnico mids (unleashing robust mids is why SP-2500s' squalkers were wired in series, too). Was raised with that guitarist's "Get thy tone from thy amp" mentality, & applied it to hi-fi hobby. Keep us posted on how your modded SP-3005s sound compared to your La Scalas. 73s para Sactown
I really like the sound of your approach, I wish I could work that sort of magic working empirically! will definitely post back with impressions of the completed rebuild! I will probably not modify crossovers from stock without a microphone and measurement software to check my work, but I don't really trust me ears enough :) my fear is I would alter the tone to suit one type of music and ruin it for others. I am from an engineering background, not a musical one, soI feel like my judgement is better when I can quantify it somehow. I envy the sort of people who can adjust the speed of a turntable by ear, I'm the type who can notice when it's wrong but needs equipment to get it right.
I have read a lot of reviews of the old Sansui speakers online, and the positive ones all seem to speak about a very large sound, which is something I really enjoy. Negative ones talk about them making a lot of sound, but not a good sound. Reading between the lines, I am quite hopeful that these will do it for me, based on my own musical and sound system related preferences, and the simulations I have done to date.
I hurt my back fairly badly on the weekend doing some home repairs, and am only now back up to the task of using the table saw and wood working tools... Will post a pic when I am done.
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