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Looking at the blurb, it needs a low impedance source, which probably means i couldn't use it after a tube pre.
I would have to connect the DAC output to it, which is ok, except it would then be for CD only and not be a replacement for the pot in the amp.
Perhaps not as useful as i first thought.:scratch:
Hi
Here are the parts that I used for my Lightspeed clone. Please feel free to substitute.
4 x Silonex LDR NSL-32SR3 – We puchased these by mistake...Leo;)...but work fine if you solder a 22R Resistor across the pot
http://uk.farnell.com/silonex/nsl-32...18?Ntt=3692218
The correct LDRs can be found at the following link
http://uk.farnell.com/silonex/nsl-32...in_merch=true&
2 x Bourns 1K Trimmers
http://uk.farnell.com/bourns/3296w-1...78?Ntt=9353178
1 x 100K Pot
http://uk.farnell.com/tyco-electroni...87?Ntt=1173987
2 x RCA Red Sockets
http://uk.farnell.com/neutrik/nys367...29?Ntt=5008529
2 x RCA White Sockets
http://uk.farnell.com/neutrik/nys367...66?Ntt=5008566
You will also require 4x 1/4w 100R resistors and a piece of 60mm x 95mm stripboard. The blue LED is optional ;)
Power Supply
1 x 7805 5v regulator
http://uk.farnell.com/stmicroelectro...0-3/dp/1087086
1 x 10uf Capacitor (All they have in stock)
http://uk.farnell.com/panasonic/eeuf...50v/dp/9692363
2 x 0.1uf Capacitors
http://uk.farnell.com/wima/mks2-0-1u...63v/dp/1006030
Case
http://www.maplin.co.uk/Search.aspx?...mond&source=15
I hope this helps
Nice one!Quote:
Originally Posted by Tripmaster
The NSL-32SR3 was my fault for just quick searching to try and find the order codes, I don't often make too many errors , honest :ner:
Richard, thanks for taking the time and trouble to list all the parts. I am sure I am not the only one who is very grateful. I hope I can build one before Christmas.Quote:
Originally Posted by Tripmaster
Steve
Its the least I could do considering the help I have received in the past :)
It might be worth sourcing an alternative 100k pot as I find its shaft a bit thick (so to speak;))
One thing to consider is that the LSA likes a high impedance (50k+) amplifier on its output; because of this I (and a lot of others) use a Nelson Pass B1 buffer with the volume control replaced by an LSA.
On DIYAudio there is a new version of this buffer coming out soon - I will let you know how that goes with the LSA.
I cannot say I have had any problems on the input side - vinyl / digital - no mismatches.
Someone posted earlier about using a battery - I use SLA'a for both the LSA (2 x 6 volt) and the B1 (3 x 6 volts) - they last at least a week.
All in all this is the best pre-amp I have had in my system.:gig:
pufin: tripmaster mentions a 22r resistor across the pot... is that what will fix mine? (im yet to find the time to get to maplins hence no feedback from me yet)
while i have your atention... the earth fix on the gainclones did nothing.. when i recase them i will post on here for ferther advice i think!
Hi HamishQuote:
Originally Posted by hamish
By soldering 22r resistor across the pot will make the volume control at little less sudden. You can always try a slightly higher value if you find the 22r not to your liking. Give it a go it will only take 5 mins
http://i374.photobucket.com/albums/o...o/P1010909.jpg
at the moment im getting a lot of volume even at zero on the pot? will that fix that?
make it simple guys... rob made it so i dont really know what im doing