HPotter
HPotter
I'm very interested in Mark Levinson 27.5 schematic.
Please send to my E-MAIL softicon@dreamwiz.com
(14Mega byte free space)
Thank you.
HPotter
I'm very interested in Mark Levinson 27.5 schematic.
Please send to my E-MAIL softicon@dreamwiz.com
(14Mega byte free space)
Thank you.
Re: Krell scematics.
How is your work progressing ? Any chanse that you could post the schematics of KMA-100 and PAM-3.
///CF
webercarbmann said:Hi again
The scematics i have are not werry good. I will have to make a better version using protel. By the way, i also have a scematics for a PAM 3 preamp. I will try to post them in a near future. Please be patient. Would some of you be interested in some KMA 100 PCB`s ??
Peter
How is your work progressing ? Any chanse that you could post the schematics of KMA-100 and PAM-3.
///CF
are you sure...
I'm keen to see the KMA-100 schematics. I have some concerns about the KSA-100 schematic posted on page 2 by hifi in that my prior information about the KSA-50 seems to be at odds with this schematic. Specifically, Dan d'Ag said in an interview that the KSA-50 was designed to work with very little negative feedback (14dB or so?). The input Z of Krell amps is usually >50k. The KSA-100 schematic shows a high feedback (like op-amp) circuit with about 23k input Z. There are some other things in the circuit that seem a little unlikely to me too
. I would like to see the KMA version to confirm the design.
I'm keen to see the KMA-100 schematics. I have some concerns about the KSA-100 schematic posted on page 2 by hifi in that my prior information about the KSA-50 seems to be at odds with this schematic. Specifically, Dan d'Ag said in an interview that the KSA-50 was designed to work with very little negative feedback (14dB or so?). The input Z of Krell amps is usually >50k. The KSA-100 schematic shows a high feedback (like op-amp) circuit with about 23k input Z. There are some other things in the circuit that seem a little unlikely to me too
. I would like to see the KMA version to confirm the design.
Hi All
I'm very interested in Mark Levinson 27.5 schematic and Mark Levinson 23.5 schematic¡_¡_¡_¡_¡_¡_¡_¡_¡_¡_¡_¡_
Please send to my E-MAIL ycljx_yjb@21cn.net
(21Mega byte free space)
Thank you.
I'm very interested in Mark Levinson 27.5 schematic and Mark Levinson 23.5 schematic¡_¡_¡_¡_¡_¡_¡_¡_¡_¡_¡_¡_
Please send to my E-MAIL ycljx_yjb@21cn.net
(21Mega byte free space)
Thank you.
Listen to a Krell KSA 100
I have been to a party and listen to a Krell KSA 100 Ok! I admitt just amazing, what is the magic solution I can't wait to the wizard is here, so... I opened the sh.t and what was I found just an ordinary circuit as posted here before.
But I started to think, if this is the final solution and this is the SOTA power amp but... how about the Pass power amps what are they? the second SOTA or... I will try to search for more obscure schematics simulate them into the Pspice or equivalent software and build them just to know.
I have been to a party and listen to a Krell KSA 100 Ok! I admitt just amazing, what is the magic solution I can't wait to the wizard is here, so... I opened the sh.t and what was I found just an ordinary circuit as posted here before.
But I started to think, if this is the final solution and this is the SOTA power amp but... how about the Pass power amps what are they? the second SOTA or... I will try to search for more obscure schematics simulate them into the Pspice or equivalent software and build them just to know.
Perhaps the KSA100 magic ...
... is equal parts of:
1: competent, class-A, but otherwise standard circuit design, (emphasis on class-A) and
2: finely crafted metalwork and internal build quality.
Somehow I think even the most coldly analytical listeners experience an audio placebo effect, when they know the music they are listening to comes from beautifully built equipment.
... is equal parts of:
1: competent, class-A, but otherwise standard circuit design, (emphasis on class-A) and
2: finely crafted metalwork and internal build quality.
Somehow I think even the most coldly analytical listeners experience an audio placebo effect, when they know the music they are listening to comes from beautifully built equipment.
Re: Perhaps the KSA100 magic ...
Sometimes it is, but not always. It all depends on the state of (your) mind and the people you listen with. I remember the last session I was attending. In the beginning it was all confusion (what the heck he's trying to impress us with?). But after an hour of tweaking I finally got to the point I felt comfortable with, and the equipment spoke for itself.
I have nothing else to say.
mirlo said:
Sometimes it is, but not always. It all depends on the state of (your) mind and the people you listen with. I remember the last session I was attending. In the beginning it was all confusion (what the heck he's trying to impress us with?). But after an hour of tweaking I finally got to the point I felt comfortable with, and the equipment spoke for itself.
I have nothing else to say.
KSA
Maybe just too much, but I was not deaf, I always think of my buddy's HiFi and an amplifier he used, it was a Hafler a rather big heavy power amp used to drive a small electrostatic system it never sounded good lack of bass and no drive at all.
When he bought this KSA power amp I thought that it would not makes things to happen but... it did lot of drive lot of bass he had to get rid of his subwoofer system.
I can't explain what happens to this small electrostatic loudspeakers from Audiostatic but the Hafler amp could not drive them, so this oldie must be a very good amplifier even today maybe it is the very large classic power supply that makes it I don't know.
Maybe just too much, but I was not deaf, I always think of my buddy's HiFi and an amplifier he used, it was a Hafler a rather big heavy power amp used to drive a small electrostatic system it never sounded good lack of bass and no drive at all.
When he bought this KSA power amp I thought that it would not makes things to happen but... it did lot of drive lot of bass he had to get rid of his subwoofer system.
I can't explain what happens to this small electrostatic loudspeakers from Audiostatic but the Hafler amp could not drive them, so this oldie must be a very good amplifier even today maybe it is the very large classic power supply that makes it I don't know.
Re: In my opinion the KSA 100 is the best DIY
I disagree. The only wise thing in KSA100 circuit is the use of right transistors in right quantity in respect to the power rating and the high bias current. The rest looks like any opamp-like SS circuit of commercial area repeating the same blames.
The global NFB loop with an electrolytic capacitor in the divider circuit first comes to mind. Next, that stupid complementary differential input stage.
Just take a standard PA amp with good heatsinks and the same power transistors, rewind the mains transformer to lower secondary voltage, disable the now unnecessary protection circuit and increase the idle current. A Krell is born!
There are much more refined and simpler ss circuits, some of them are much older than 25 years.
leffe said:
I disagree. The only wise thing in KSA100 circuit is the use of right transistors in right quantity in respect to the power rating and the high bias current. The rest looks like any opamp-like SS circuit of commercial area repeating the same blames.
The global NFB loop with an electrolytic capacitor in the divider circuit first comes to mind. Next, that stupid complementary differential input stage.
Just take a standard PA amp with good heatsinks and the same power transistors, rewind the mains transformer to lower secondary voltage, disable the now unnecessary protection circuit and increase the idle current. A Krell is born!
There are much more refined and simpler ss circuits, some of them are much older than 25 years.
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