Hi Steen, I am in the prosess of restoring my newly aquired NS10. 
Unfortunately it was in non-working condition. The RIAA network is also modified (by Oslo Hificenter back in the days) and a quick simulation shows that is it more accurate with smoother frequency response. I can give you the values if you want.
The main fault was that one of the secondaries had broken of its pcb tap, but I have fixed it now. What I would like to know is the unregulated and regulated voltage in a working unit so I can compare and decide if it's working as intended. Have you/can you measure them for me please?
Unfortunately it was in non-working condition. The RIAA network is also modified (by Oslo Hificenter back in the days) and a quick simulation shows that is it more accurate with smoother frequency response. I can give you the values if you want.The main fault was that one of the secondaries had broken of its pcb tap, but I have fixed it now. What I would like to know is the unregulated and regulated voltage in a working unit so I can compare and decide if it's working as intended. Have you/can you measure them for me please?
Congratulations Another happy member of the NS10 club I will take off the lid shortly and do the measurements for you.
I could have sworn that I wrote down the values somewhere, but my paperwork is a mess and gets too piled up , so its probably thrown out... Are you considering an A400 too?
Steen.
Another happy member of the NS10 club I will take off the lid shortly and do the measurements for you. I could have sworn that I wrote down the values somewhere, but my paperwork is a mess and gets too piled up , so its probably thrown out... Are you considering an A400 too?
Steen.
Okay, here you go: Voltage across the main capacitance bank (before the reg!) is 33,72 Volts. Voltage across the 4 "small" caps feeding each board is 21,83 Volts (Thats the regulated voltage). If you get voltages that looks like those, you are okay. I am sure it will be a bit different from my values. If you need anything, just let me know.
Have fun with that magnificent preamp
Steen
Edit, here is a pic, measuring the regulated voltage.
Have fun with that magnificent preamp
Steen
Edit, here is a pic, measuring the regulated voltage.
Attachments
steenoe said:Okay, here you go: Voltage across the main capacitance bank (before the reg!) is 33,72 Volts. Voltage across the 4 "small" caps feeding each board is 21,83 Volts (Thats the regulated voltage). If you get voltages that looks like those, you are okay. I am sure it will be a bit different from my values. If you need anything, just let me know.
Have fun with that magnificent preamp
Steen
Edit, here is a pic, measuring the regulated voltage.
I can't see any toob inside.........
Mad_K said:Great, thanks! My unregulated voltage was higher, because I ran it without the modules installed. The regulated voltage was similar, so I guess I'm OK
Now I am in the prosess of removing all of the old solderings (and the massive flux residue) and resoldering all jointsPuh!
Thats the fun part of it, at least I had a great time with the NS10 refurbishing. Selecting all the parts carefully and soldering them in the circuit! Man thats great!
Zen Mod said:
I can't see any toob inside.........
Maybe its time for that SUSY tube thing of yours? Is the SCH in your "musings" page the latest?
Steen
BTW. I am working on a really twisted preamp right now
steenoe said:
....................
Maybe its time for that SUSY tube thing of yours? Is the SCH in your "musings" page the latest?
Steen
BTW. I am working on a really twisted preamp right now
susy toob thing on musings page is just concept;
I have something on paper,and entire picture in my head ( who's else ?
) , but it's too early .........twisted preamp?
just wait for pcbs ; they're on way.........
That is the most thrilling thing I could ever hearZen Mod said:
susy toob thing on musings page is just concept;
I have something on paper,and entire picture in my head ( who's else ?
twisted preamp?
just wait for pcbs ; they're on way.........
Thanks a lot I will try the twisted thing anyway's, at some point! Here is a peek for the keen eyed eagle
Steen
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steenoe said:
That is the most thrilling thing I could ever hear
I will try the twisted thing anyway's, at some point! Here is a peek for the keen eyed eagle
Steen
het,mate......I sent you just Babelfish pcbs this time,sorry if I wake false hopes this time
Steen dedicated preamp pcbs are on their way for birth.........Oly Magician is on the move
edit- regarding books you asked for... I have minor problems with my wifi this days,so just be patient
edit edit:
if (just if!! ) you start with making my prototype of preamp - I dunno which schmtc variant I sent you ; there are few dramatic changes in last few iterations.........
Pheew, that gives me have a little more spare time!! No need to worry at all! I am more than happy to have the blue ones. Take your time. I wont start anything before you say "Green lights"Zen Mod said:
het,mate......I sent you just Babelfish pcbs this time,sorry if I wake false hopes this time
Steen dedicated preamp pcbs are on their way for birth.........Oly Magicican is on the move
edit- regarding books you asked for... I have minor problems with my wifi this days,so just be patient
Russ White said:
Hi Steen, I thought I recognized those green boards.
I hope it turns out well for you.
Cheers!
Russ
Russ my man (eagle-eye?), I am sure it will turn out just great
My only little concern is; (as you might have guessed?) Will the chips sound as good as the discrete's?? I am to find out I have some great expectations for the TI SUSY parts though Steen
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