No. Like so many, I think i wore out my welcome with him, being a neurotic pest. Understandable, though. Just ask ZM😀
I am about to start on Altec combo. 416 down low. 288 in Iwata, and somthing up top. Havent decided about that yet.
I am about to start on Altec combo. 416 down low. 288 in Iwata, and somthing up top. Havent decided about that yet.
I would say that a 15" JBL crossed to a SEOS-18 around 700-800 Hz is the sweet spot, if you don't want a midbass horn. Driven by an M2, F6, or SIT would be heavenly.
THere are folks in both camps, from what I understand. JBL tends to like higher power amps to sound best, where as Altec, with lightweight cones and lower power handling like FW style amps. I don't dispute your thoughts. Too new to do that. Just relaying what I have heard. Pop over to Horn/TL combo to discuss. I would thoroughly enjoy the company. I have JBL LE15 and have been watching for 2235, which is considerd king, by many.
That's kinda right buzz. There seems to be this thing where they (I use 2226) get better with a little more power (I"M more the R&R'er type). But they really are great low distortion drivers if your pushin a little 😀
I was staring at the schematics today trying to decide how I will proceed with this after receiving Mike's pcbs.
One thing that I was thinking was where to get the 2sj74 and then it kind of occurred to me that perhaps we could use a 2SK170 in a DCB1 kinda way?
That would perhaps offer better symmetry in the buffer section and would also be in the spirit of F6 part of which is not using complementary parts 🙂
Not to mention one less semi-dodo to worry about 🙂
One thing that I was thinking was where to get the 2sj74 and then it kind of occurred to me that perhaps we could use a 2SK170 in a DCB1 kinda way?
That would perhaps offer better symmetry in the buffer section and would also be in the spirit of F6 part of which is not using complementary parts 🙂
Not to mention one less semi-dodo to worry about 🙂
My understanding is that the Linear Systems J74 replacement is no longer vaporware, and might be available for sale in the next few months.
But a non-complementary solution is very intriguing... 🙂 🙂 🙂
But a non-complementary solution is very intriguing... 🙂 🙂 🙂
certainly yes
not certainly
certainly yes
certainly yes
but - do not forget that same sex Jfet buffer is having sort of double output impedance , comparing to complementary version
why not double Jfets in it ?
😉
Since we have spoken of the phase of distortion spectra, is it a ridiculous notion to think that a 1st stage that produces a positive 2K would cancel out a 2nd stage that produced a negative 2K if these levels were similar?
No, it is not ridiculous, I suppose that happens always when you trim the k2 to minimum...😀
For instance in the push pull stage...
For instance in the push pull stage...
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Unfortiunately afte showing proudly picture of positive phase k2, measured with Visual Analyser I have to report that by changing the FFT value the shown phase flips to the negative side.....😕
And I was so happy.....😡
And I was so happy.....😡
Life isn't so simple.....even with happy ears....... I cannot stop building, the problem is more in the hands..
....😀😀
....😀😀
Guys how do we check the phase with FFT?
I have a rigol scope. If I remember correctly we ηαωε expansion or compression, but how does that translate into FFT or sine wave visually?
or do we need a distortion analyzer for that job?
I have a rigol scope. If I remember correctly we ηαωε expansion or compression, but how does that translate into FFT or sine wave visually?
or do we need a distortion analyzer for that job?
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