Re:"a Xover that would run 1 T/M as a Tweeter and the other as a Mid?" - you could try a small inductor (~ 0.2mH?) in series with the lower mid, and see how that sounds. If OK follow up with a small cap (~4.7uf?) in series with the top one. There may be balance issues however, I suspect the original used 2x M-Ts to match the efficiency of the woofer... or perhaps it was for power handling??
Just remembered these are '16' ohm drivers, so for an arbitrary 4KHz xover, 0.62mH & 2.7uF would be closer to the mark
Just remembered these are '16' ohm drivers, so for an arbitrary 4KHz xover, 0.62mH & 2.7uF would be closer to the mark
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HI, I am a newbe to vintage audio. I picked up a set of Optimus 1Bs at a thrift store. Woofers are great but the tweeters have been replaced with junk. I saw you replaved the mid=tweeters with a PS95 a couple years ago. How is that working today and do you have any suggestions if I do the same today? Alternatively, I will just search for 4 orig drivers. ThanksRe:"a Xover that would run 1 T/M as a Tweeter and the other as a Mid?" - you could try a small inductor (~ 0.2mH?) in series with the lower mid, and see how that sounds. If OK follow up with a small cap (~4.7uf?) in series with the top one. There may be balance issues however, I suspect the original used 2x M-Ts to match the efficiency of the woofer... or perhaps it was for power handling??
Just remembered these are '16' ohm drivers, so for an arbitrary 4KHz xover, 0.62mH & 2.7uF would be closer to the mark
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thanks
Thanks, did you eventually do a crossover or just cap the PS95's? What cap did you use?Hi JB, it's working fine, It's now my daughters HiFi system, paired with an old Panasonic turntable,
If you want the original drivers, I still have them, but the PS95 is far superior
PeteMcK, Going back to your initial post, how did you measure the TS parameters of the 2510A woofer? Manually, REW. DATS or ?
I'm using REW and so far am getting much higher Qts and Fs for the set I have. I wanted to use them in a 1.7 cu ft box, posibly ported but not sure yet as I need to do more analysis with WinISD. Using your values it would be a nice fit, but with my values not so good.
Thanks!
I'm using REW and so far am getting much higher Qts and Fs for the set I have. I wanted to use them in a 1.7 cu ft box, posibly ported but not sure yet as I need to do more analysis with WinISD. Using your values it would be a nice fit, but with my values not so good.
Thanks!
Hi 4R5, I use the LIMP module of ARTA, with a simple jig to make my measurements. With old speakers that have been unused for some time, the spider stiffens up and raises Fs & Qt. Unfortunately there's no magic potion that will decrease the stiffness of phenolic spiders, although it's work giving them a LF workout for several hours, which may make some difference. Cheers
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