Hi Mike,
I really have to get the ability to print PCB patterns so I can produce my own circuit boards. I owe it to you and myself to attempt some of my ideas with this amp.
-Chris
I really have to get the ability to print PCB patterns so I can produce my own circuit boards. I owe it to you and myself to attempt some of my ideas with this amp.
-Chris
BTW, have you already tried the lineartech devices ?
Chris, i could send you some instructions via email...
Mike
Chris, i could send you some instructions via email...
Mike
Hi Mike,
Got your instructions, thanks.
No, I haven't had a chance. Every since XP went down I have not been able to get the sound card working properly. 🙄 I have to change computer functions around and put the sound card into a newer bench computer. I hate windows.
-Chris
Got your instructions, thanks.
No, I haven't had a chance. Every since XP went down I have not been able to get the sound card working properly. 🙄 I have to change computer functions around and put the sound card into a newer bench computer. I hate windows.
-Chris
Windows is trash but is so easy !! 
Did you try to uninstall your soundcard driver from Device Manager and reboot ?
I have Linux at work, and I can guarantee that it give more problems than windows
Did you try to uninstall your soundcard driver from Device Manager and reboot ?
I have Linux at work, and I can guarantee that it give more problems than windows
Hi Nando,
IBM on the other hand is at least honest. I had a bug in OS/2 R4.0 and they provided a fix. I am still running a beta of IBM Warp server 4 and it's been solid. Unlike all the buggy beta's (they call them full releases) Microsoft charges for. XP is Microsoft's best attempt so far and they are just getting to where OS/2 R4 was 10 years ago. OS/2's kernel was more compact too. It runs wicked fast on new hardware.
Note to all. If your problem isn't a driver (someone else's problem) Microsoft is not really able to fix it. That's support. All the diagnostic steps were an attempt to prove it was a driver vendor issue. They did admit that wasn't the case and dropped the issue. It's not worth the fight, so for important systems I highly recommend some port of Linux. At least you know there is not always support unless you purchase a commercial version. I would suspect that you will get patches in that case.
Sorry for the rant, but Microsoft ought to be charged for theft and loss of revenue on a large scale.
-Chris
Yup. A Microsoft update trashed my system, Microsoft was unable to provide a fix. So, I formatted the partition and reinstalled XP from the ground up - fresh. No joy. What used to work no longer does. That moronic company cost me at least three days and my ability to to what I need to do.
IBM on the other hand is at least honest. I had a bug in OS/2 R4.0 and they provided a fix. I am still running a beta of IBM Warp server 4 and it's been solid. Unlike all the buggy beta's (they call them full releases) Microsoft charges for. XP is Microsoft's best attempt so far and they are just getting to where OS/2 R4 was 10 years ago. OS/2's kernel was more compact too. It runs wicked fast on new hardware.
Note to all. If your problem isn't a driver (someone else's problem) Microsoft is not really able to fix it. That's support. All the diagnostic steps were an attempt to prove it was a driver vendor issue. They did admit that wasn't the case and dropped the issue. It's not worth the fight, so for important systems I highly recommend some port of Linux. At least you know there is not always support unless you purchase a commercial version. I would suspect that you will get patches in that case.
Sorry for the rant, but Microsoft ought to be charged for theft and loss of revenue on a large scale.
-Chris
Microsoft is really a pain. XP is quite stable, but as you said, if there's any bug not related to the drivers, you'll never get a fix path.
Format the windows is so disgusting... All the times needed to backup every thing, we always miss something, then install everything again, drivers, programs ahhhh...
I feel your pain !
Format the windows is so disgusting... All the times needed to backup every thing, we always miss something, then install everything again, drivers, programs ahhhh...
I feel your pain !
About linux, Mandriva is what I use at work. The download version, but seems that they have a great support for the inbox comercial versions 😉
Hi Nando,
Not wanting to stay off topic too long. I'll just say my confidence is much higher with Linux. uSoft is too nosy and too easy to hack. You do know they are starting to attack Linux now.
Most people run Linux because it's no uSoft. uSoft may want to attack it because IBM is behind Linux. 🙄
-Chris
Not wanting to stay off topic too long. I'll just say my confidence is much higher with Linux. uSoft is too nosy and too easy to hack. You do know they are starting to attack Linux now.
Most people run Linux because it's no uSoft. uSoft may want to attack it because IBM is behind Linux. 🙄
-Chris
anatech said:
IBM's Clustering awesome!
Sun also good for Linux
Novell Too!
enough rant
I have some old MJL1302A, MJL3281A's 4 of each.
Was thinking of resurrecting an old amp with mods but then🙄
also have the 2sc2240's
Easy to get 2sa's 2sc's locally
with a 2*28vac xformer ~400va should be good for 50~60w?
best suggestion Version 5.3?
allan
Hi all
I do have a question.
Why 2n5401's on +/-36v
or are these suggested for higher voltage version.
or current capability / linearity?
allan
I do have a question.
Why 2n5401's on +/-36v
or are these suggested for higher voltage version.
or current capability / linearity?
allan
Hi Allan, 2n5401/2n5551 are good sounding low noise transistors. And, because of the voltageswing in the VAS, these transistors have to withstand ~72v with a +/- 36v supply. BC546 or similar will blow when volume is turned up.
You have to be careful when using 2sa/sc to92 transistors, they have completely different pinout than BC/2N/MPSA transistors.
A 2*28vac xformer will give ~40v DC, that's absolute maximum recommended, but still okay.
Mike
You have to be careful when using 2sa/sc to92 transistors, they have completely different pinout than BC/2N/MPSA transistors.
A 2*28vac xformer will give ~40v DC, that's absolute maximum recommended, but still okay.
Mike
Thanks Mike
Was thinking about using 2sa/c's
have some 970, 2240, 1015 and 1815's lying around and was thinking to use them since i'll etch the pcb's myself.
different pinpout i know,(pain in the butt)
Havn't used the 2n's before, little knowldge of them.
but i willing to learn or try😀
I'll go standard first, layout and components so i'll have a reference for future.
allan
ps did you think about CFP output?
Was thinking about using 2sa/c's
have some 970, 2240, 1015 and 1815's lying around and was thinking to use them since i'll etch the pcb's myself.
different pinpout i know,(pain in the butt)
Havn't used the 2n's before, little knowldge of them.
but i willing to learn or try😀
I'll go standard first, layout and components so i'll have a reference for future.
allan
ps did you think about CFP output?
awpagan said:
Yes, but for non ClassA they seem to suffer badly from cross over distortion.
Mike
Dear all,
I saw the Amp yesterday in the new DIY Loudspeaker magazine and this is exacly what I'm looking for since more than a year.
I tried to get some cheap Amps from ebay to give a little more power to my Cinema Frontspeaker which are connected at the moment to a Yamaha RX-65x, but got nothing really interesting.
I read a lot in the magazine, on the web and here in the forum, but not shure how to start. I startet with a electronical carreer, but thats a long time ago.
Also I saw on not page something about the power supply the Amp needs?
Is there somewhere a let's say Information for Dummies out there?
I saw the Amp yesterday in the new DIY Loudspeaker magazine and this is exacly what I'm looking for since more than a year.
I tried to get some cheap Amps from ebay to give a little more power to my Cinema Frontspeaker which are connected at the moment to a Yamaha RX-65x, but got nothing really interesting.
I read a lot in the magazine, on the web and here in the forum, but not shure how to start. I startet with a electronical carreer, but thats a long time ago.
Also I saw on not page something about the power supply the Amp needs?
Is there somewhere a let's say Information for Dummies out there?
Hi Markus,
power supply needs for SymAsym are from 2 x 24V to 2 x 27V transformer secondaries, I suggest a power rating of 160 to 200 VA per channel. I used 2 x 27V/200 VA per channel on the Klang + Ton project.
power supply needs for SymAsym are from 2 x 24V to 2 x 27V transformer secondaries, I suggest a power rating of 160 to 200 VA per channel. I used 2 x 27V/200 VA per channel on the Klang + Ton project.
Hi Holger,
thanks for the information. Have you build the system for K+T?
They staten a link to your website, but I can't find nothing on their?
Has anybody from Germany maybe an articel list for Reichelt, Conrad or some other shop?
Thanks a lot
thanks for the information. Have you build the system for K+T?
They staten a link to your website, but I can't find nothing on their?
Has anybody from Germany maybe an articel list for Reichelt, Conrad or some other shop?
Thanks a lot
Hi Markus,
yes, it was me who did that article - of course with lots of kind support from Michael.
I am still working on the "online extension" on my website, I hope it'll be online tomorrow.
And yes, I will include a parts list with Reichelt order codes.
yes, it was me who did that article - of course with lots of kind support from Michael.
I am still working on the "online extension" on my website, I hope it'll be online tomorrow.
And yes, I will include a parts list with Reichelt order codes.