But the day wasn't over yet. The sheriff knew the Kid, he had him locked before and sometimes, just to kill the time, had conversation with him. Slowly, he started to feel sympathy for a Kid. The Kid was once a respected citizen, yet out of boredom started to fool around. Initially he considered that as nothing serious, just few jokes here and there. But he was going deeper and deeper. Somebody found out about it and the Kid was cast away.
Some folks missed him, some felt guilty and the Kid was given another chance. He came back and promised he'll be good. Sheriff was happy, because he liked to have the Kid around. The Kid had a knowledge and experience, which Sheriff and some other town folks found valuable.
Suddenly, one day, the Sheriff noticed that the Kid started the old routine. He knew that some citizens won't let him be easy on Kid again and will ask him for some serious actions. So the Sheriff sat in his office and started to think. He also knew that the day is not over yet and he has to come out with a decision before sundown.
He was wondering what other Pass Saloon regulars were thinking about the Kid and what actions they would find satisfying.😉
Some folks missed him, some felt guilty and the Kid was given another chance. He came back and promised he'll be good. Sheriff was happy, because he liked to have the Kid around. The Kid had a knowledge and experience, which Sheriff and some other town folks found valuable.
Suddenly, one day, the Sheriff noticed that the Kid started the old routine. He knew that some citizens won't let him be easy on Kid again and will ask him for some serious actions. So the Sheriff sat in his office and started to think. He also knew that the day is not over yet and he has to come out with a decision before sundown.
He was wondering what other Pass Saloon regulars were thinking about the Kid and what actions they would find satisfying.😉
A spring at the base of the Sheetrock Cliffs mixed with the dust that had eroded from the Cliffs to form a thick white mud. A cottonwood tree managed to find enough moisture to live there, and it was under this tree that the stranger found the Kid.
He had cut some of the hair from his long-suffering horse's tail and draped it over his head. He was squatting in the shade of the tree with a crooked twig in his hand, alternately claiming to be a woman and a magician. He clearly wasn't a woman, and as for being a magician...the Current Source of his magic seemed to be no more than an ancient pack of cards, worn, but still servicable. At intervals, he would scratch uneven circles in the dust with the twig and claim that he could make the wind blow. The only wind the stranger could detect seemed to have come from the Kid having eaten a large plate of beans.
A deputy was there, and some of the people from DIYtown. Clearly, the Kid wasn't himself today. In any event, there would be no ambush.
The stranger rode on...
Grey
He had cut some of the hair from his long-suffering horse's tail and draped it over his head. He was squatting in the shade of the tree with a crooked twig in his hand, alternately claiming to be a woman and a magician. He clearly wasn't a woman, and as for being a magician...the Current Source of his magic seemed to be no more than an ancient pack of cards, worn, but still servicable. At intervals, he would scratch uneven circles in the dust with the twig and claim that he could make the wind blow. The only wind the stranger could detect seemed to have come from the Kid having eaten a large plate of beans.
A deputy was there, and some of the people from DIYtown. Clearly, the Kid wasn't himself today. In any event, there would be no ambush.
The stranger rode on...
Grey
Peter,
that's why I told Fred he would be actually impregnating himself. 😉
Technically that's not an hermaphrodite as they need two individuals to reproduce but the name actually excapes. I will ask my wife, the biologist, tonite.
that's why I told Fred he would be actually impregnating himself. 😉
Technically that's not an hermaphrodite as they need two individuals to reproduce but the name actually excapes. I will ask my wife, the biologist, tonite.
As long as there are tasteful beefs inside, I would care less about who the Stranger is or who the Kid is. But, I would care more about who the Sheriff is, wondering if he knows the taste of beef.
🙂
JH
🙂
JH
Did anyone else want to throw in a vote for gain for the preamp?
(I managed to sneak in an hour or two last night before hitting the sack. You can't make me do sheetrock 24 hours a day.)
Grey
(I managed to sneak in an hour or two last night before hitting the sack. You can't make me do sheetrock 24 hours a day.)
Grey
Grey,
thanks for slapping some sense back into this thread.
I noticed a marked 'change' in the sound of the BOSOZ when operated at 10 dB gain vs. 20 dB. I am not going to say what I liked the most and what gain I eneded up keeping. Did you notice anything of the kind while playing with the X-preamp circuit?
thanks for slapping some sense back into this thread.
I noticed a marked 'change' in the sound of the BOSOZ when operated at 10 dB gain vs. 20 dB. I am not going to say what I liked the most and what gain I eneded up keeping. Did you notice anything of the kind while playing with the X-preamp circuit?
The preamp(s) are still in the workbench phase. As I've said before, I've got the 6922/6DJ8 version about where I want it. Ditto for the 6SN7. I'm now into the solid state phase of things. Last night I was playing with JFETs. I put in a bit of time on a MOSFET version (IRF610s), but got frustrated because of the Gate capacitance. I don't have anything smaller on hand like the Zetex pieces. I will be revisiting the MOSFET circuit, but I'm down to one punch board at the moment, the others all being in use for other things.
I may decide to go ahead and begin a thread with the two tube and one JFET versions and let the MOSFET version tag along later.
For what it's worth, the JFET version was giving me, uh, 17 dB gain, I think it was. Open loop. I'm not planning on using much in the way of feedback...maybe 5-10 dB, so something like that would work well for CD folks and those with high gain phono stages. (Which leaves me out...at least for the moment. But only for the moment. [Heh, heh, heh...])
The thing about JFETs is that they don't do much current, so a JFET output is a bit on the puny side. Not to worry. There are ways around that.
Grey
I may decide to go ahead and begin a thread with the two tube and one JFET versions and let the MOSFET version tag along later.
For what it's worth, the JFET version was giving me, uh, 17 dB gain, I think it was. Open loop. I'm not planning on using much in the way of feedback...maybe 5-10 dB, so something like that would work well for CD folks and those with high gain phono stages. (Which leaves me out...at least for the moment. But only for the moment. [Heh, heh, heh...])
The thing about JFETs is that they don't do much current, so a JFET output is a bit on the puny side. Not to worry. There are ways around that.
Grey
Grey,
Should you ever need some Toshiba 2SK170 for your experiments then I suggest you tell me. I'd be happy to donate almost whatever quantity you need.
Should you ever need some Toshiba 2SK170 for your experiments then I suggest you tell me. I'd be happy to donate almost whatever quantity you need.
second AX channel up and running......
It really sounds great, too.
I've noticed a slight hum out of the new (right) channel. Something weird, the old (left) channel now has no measurable ac ripple at the speaker outputs, but the new (right) channel has assumed the role of 0.002 volts ac ripple that the left used to have. When I reverse the inputs from the x-over the hum stays on the right channel, indicating the AX is at fault. I'm mulling this over and thought I'd share it with the group. The groups ability to brainstorm is substantial. So, are there any ideas out there?
The new (right) channel has the board that once lost Q9 and the adjoining source resistor and power FET. Do you suppose that the differential pair could have suffered some damage in the mishap?
I'm using only one star ground in the stereo chassis. should there be two; one star point for each pcb?
Another thing, the choke scheme that I mentioned the other day needs to be revised: the bridges' dc out both face the twin chokes in the same polarity direction. I thought and therefore communicated that I had the chokes wired in reverse, but after carefully pulling apart the power leads, I noticed my original observations were incorrect. I appologize for the misinformation.
A few more tidbits: I used 10k resistors at the inputs on the new (right) board and noticed more detail in the music. I'll be converting the old (left) board from 22.1k to 10k soon. But, could the 10k be causing noise? Also, I'm using a 1k 1/4 watt resistor across the caps of the new (right) channel to bleed them. Could this be causing noise? Should I use an LED instead? I'm using a blue LED for the old (left) channel to bleed its caps.
It really sounds great, too.
I've noticed a slight hum out of the new (right) channel. Something weird, the old (left) channel now has no measurable ac ripple at the speaker outputs, but the new (right) channel has assumed the role of 0.002 volts ac ripple that the left used to have. When I reverse the inputs from the x-over the hum stays on the right channel, indicating the AX is at fault. I'm mulling this over and thought I'd share it with the group. The groups ability to brainstorm is substantial. So, are there any ideas out there?
The new (right) channel has the board that once lost Q9 and the adjoining source resistor and power FET. Do you suppose that the differential pair could have suffered some damage in the mishap?
I'm using only one star ground in the stereo chassis. should there be two; one star point for each pcb?
Another thing, the choke scheme that I mentioned the other day needs to be revised: the bridges' dc out both face the twin chokes in the same polarity direction. I thought and therefore communicated that I had the chokes wired in reverse, but after carefully pulling apart the power leads, I noticed my original observations were incorrect. I appologize for the misinformation.
A few more tidbits: I used 10k resistors at the inputs on the new (right) board and noticed more detail in the music. I'll be converting the old (left) board from 22.1k to 10k soon. But, could the 10k be causing noise? Also, I'm using a 1k 1/4 watt resistor across the caps of the new (right) channel to bleed them. Could this be causing noise? Should I use an LED instead? I'm using a blue LED for the old (left) channel to bleed its caps.
John,
hums stories are always sad. Could you please post an updated schematic and some pictures? The pics would be useful to see how you wired things up. You could do a drawing instead. It is not clear to me whether you have a dual mono or a single supply. First I would exactly duplicate the channel that works and see what happens from there.
hums stories are always sad. Could you please post an updated schematic and some pictures? The pics would be useful to see how you wired things up. You could do a drawing instead. It is not clear to me whether you have a dual mono or a single supply. First I would exactly duplicate the channel that works and see what happens from there.
UrSv,
Jam was gracious enough to donate three 2SK387s to the cause, so I've got duals. 170's would be quite useful for one phase of the project, but I'm afraid postage from you to me would exceed the value of the devices themselves. I'd be embarrassed to have someone to spend money in such a fashion.
At the moment I'm using 2N5457 JFETs (singles), so as to get the general circuit worked out before I put 'rare' devices on the line. I've got one more variation that I want to try before I put in the 387s. Then I'll try another variation on the variation. And maybe another variation after that...
Anyone thinking this will be a big, complicated circuit will be disappointed. This will be a very Zen-ish project. You don't mind that, do you?
Grey
Jam was gracious enough to donate three 2SK387s to the cause, so I've got duals. 170's would be quite useful for one phase of the project, but I'm afraid postage from you to me would exceed the value of the devices themselves. I'd be embarrassed to have someone to spend money in such a fashion.
At the moment I'm using 2N5457 JFETs (singles), so as to get the general circuit worked out before I put 'rare' devices on the line. I've got one more variation that I want to try before I put in the 387s. Then I'll try another variation on the variation. And maybe another variation after that...
Anyone thinking this will be a big, complicated circuit will be disappointed. This will be a very Zen-ish project. You don't mind that, do you?
Grey
Postage would probably be USD 3 or similar. If I send you enough of them the value will be higher...
Your call Maestro.
Your call Maestro.
UrSv,
We could do it the other way. Why you don't send them to me first and then I send them to Grey. The postage from me will be lower.😉
We could do it the other way. Why you don't send them to me first and then I send them to Grey. The postage from me will be lower.😉
Peter, do you need some as well? It seems unlikely that sending some from Switzerland to you and then you sending them to Grey would be cheaper than me sending directly, right?
Since I have already committed to sending some to Grey "should he accept this mission" I might as well send some to you in order to be able to compare the postages and we will have the answer.
Others, please note that this is a limited offer to a limited number of people entirely at my discretion with the intention of maybe learning something. Not fair at all actually.
Since I have already committed to sending some to Grey "should he accept this mission" I might as well send some to you in order to be able to compare the postages and we will have the answer.
Others, please note that this is a limited offer to a limited number of people entirely at my discretion with the intention of maybe learning something. Not fair at all actually.