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Old 30th March 2003, 06:38 AM   #11
elizard is offline elizard  Canada
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yeah, i love the instructions .. they're awesome
for the 8021 preamp, there's a place where you solder a little piece of wire .. acts like a jumper
and there's 2 positions .. 1 for 110, 1 for 220

i also bought a 20/40watt switchable soldering iron .. which is more recommended to use, 20 or 40??

and, i got myself the 2% rosin silver solder .. as well as a thin pointy tip
i've pretty much all other tools, but a desoldring tool ..

i'm getting a start on it tomorrow .. as suggested earler by paulb, i'm doin resistors first .. that's also how its laid out in the manual

oh .. and its 500 solder points ..
is it just me, or is that actuall lots???

btw i'll post results as soon as i get it goin
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Old 30th March 2003, 08:39 AM   #12
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The only mod I can recommend is to use OPA627 if you want to build it and never open it again. Good luck with your project !

Jean-Paul
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Old 30th March 2003, 09:02 AM   #13
trwh is offline trwh  United Kingdom
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elizard, the 20 watt setting on your iron should be more than enough.

See ya,
Tim.
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Old 30th March 2003, 06:45 PM   #14
elizard is offline elizard  Canada
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well .. thanks for all the replies so far

i just did a couple hours of soldering .. did the resistors first to get used to it again
now i got the hang of it .. i didn't heatsink anything, as advised (the velleman kit doesn't say anything bout it either ..)
hopefully didn't toast anything .. i did it quickly though, for most part

checked .. double and triple checked everything ..

i was able to finish the smaller pcb .. and do all the jump wires on the bigger one ..
maybe tonight after work i'll do all the resistors/diodes .. MAYBE (there's like 100 of em in total .. blah!)
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Old 30th March 2003, 06:53 PM   #15
paulb is offline paulb  Canada
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Quote:
Originally posted by elizard
i also bought a 20/40watt switchable soldering iron .. which is more recommended to use, 20 or 40??
Quote:
Originally posted by trwh
elizard, the 20 watt setting on your iron should be more than enough.
See ya,
Tim.
I'd use the 40 watt setting. But to each their own.
Enjoy!
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Old 30th March 2003, 07:39 PM   #16
elizard is offline elizard  Canada
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Quote:
Originally posted by JasonL
it took me 4 days to put mine together the instructions are verry well layed out i liked them alot. The only thing i got stuck on was the transormer wireing. when i wired mine up i got 220 insted of 110 witch didnt alow the unit to turn on. but from then in it works AWSOME i used it every day.
which kit did you put together? the one you're trying to sell? or did you actually do 8021?
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Old 30th March 2003, 09:55 PM   #17
jleaman is offline jleaman  Belgium
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I built this one. It tooke me long because there are alot of metal film resisters and the instructions basicaly say one part at a time. and i did it in the evenings.

http://www.qkits.com/serv/qkits/vell...ages/K4100.asp

im still trying to sell it though.
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Old 30th March 2003, 10:33 PM   #18
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Quote:
Originally posted by jean-paul
The only mod I can recommend is to use OPA627 if you want to build it and never open it again. Good luck with your project !

Jean-Paul
excellent op-amp...distortion virtually nil for typical loads and low gains (~3): see attached:
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File Type: gif opa627a.gif (48.5 KB, 643 views)
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Old 30th March 2003, 10:41 PM   #19
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...but ne5532/4 just as good, if not better for significantly less money:
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Old 31st March 2003, 05:51 AM   #20
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Talking It isn't about specs only...

... but NE5534 sounds significantly worse than OPA627.
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