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In Reply to: RE: Fostex alnico tweeters posted by Jim D. on December 10, 2016 at 05:34:49
I use the T500 in my system which is Edgar architecture but using INLOW horns in the same ranges. Started out with Edgar stuff
I tried many things but ended up being most satisfied with Edgar's recommendation for the FANES (which are pretty annoying). Which is to use nothing more than a capacitor in series.
I use about 0.88 uF of Russian teflons and that is it. No need for padding, you just don't want a resistor in the circuit if you can help it.
Play around with capacitor values and you will find a combo that works. I am using 4 0.22 uF - I would bet that you are better off using one brand/model of capacitor. If you want to sneak up on the right value get a bunch of .1 uF caps.
I had used a 1uF Jupiter copper foil and this was just a bit too much.
Maybe I have grown used to it or my implementation has ameliorated the infamous "ping" sound the FOSTEX tweeters are noted for. Using them purely for atmospherics so they do not impose themselves on the 2441s. I am using the TRUEXTENT diaphragms and these do meld nicely with the T500s - at least I think they do.
One advantage of going ahead and getting the "really good one" is you will not wonder "what if?". Unless you want to drive yourself nuts with wondering what would happen with that TAD supertweeter or a GOTO. Luckily this never crosses my mind.
Follow Ups:
Yes, well said about buying the T500amk2 first. After my negative experience with the Fanes, I tried a couple "cheap" tweeters and decided I'd wait until I could buy something that is up to the challenge of my horns.
I see you use some First Watt gear. I'm listening to an M2 clone now with my horns.
Jim
I find your mention of First Watt amps interesting. For a long time I used Cary Audio 2a3 SET monoblocks to power the wide range horns and bullet tweeters of my rig. I replaced those with a pair of First Watt F3 stereo amps. I found that to be a real upgrade, and I have no regrets about the change.
I tried the single ended thing and enjoyed them until I realized they made everything sound too similar. Yes, it was a nice golden sound but you eventually grow tired of that fingerprint.
The FWs eliminate tube condition anxiety.
I have hot-rodded the SIT1s by putting in a small input cap to act as a high pass filter around 400 hz and the output caps are removed and the capacitance needed for the speaker level 500 hz high pass inserted.
I used a copper Vcap on the input and the DYNAMICAP at the speaker. Was using Russian paper oils but the DYNAMICAPs are better once they get some age on them.
The amp is spacious and true in tone.
My FW amps are my last amplifiers.
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