An Amplifier For The Computer

For the three and more legged things
richardcooper2k
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Post by richardcooper2k » Wed Nov 28, 2012 10:34 pm

The naim type power amp kits are more expensive and don't include heatsink, power supply and preamp (but still only a little over £20)

http://www.ebay.co.uk/itm/pair-2-channe ... 337e1c1452

It would be possible to go the whole hog and build a naim pre amp clone as well should the idea possess you.....

http://www.ebay.co.uk/itm/single-end-cl ... 4ab80ecc48

Or you could try an integrated valve pre, chip power amp kit for £25 !

http://www.ebay.co.uk/itm/Tube-6N3-Prea ... 4aab314324
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pre65
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Post by pre65 » Wed Nov 28, 2012 10:39 pm

Or you could keep an eye on your local Freecycle web site.

I've had a few hi-fi freebies from my area. :)
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simon
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Post by simon » Wed Nov 28, 2012 11:13 pm

I have some old solid state stuff I could dust off, but where's the fun in that? :D

There's so many cheap things to have a go at, it's amazing really. Now how good they are in reality is another matter, but for a bit of fun it's a lot cheaper than buying a transformer set...

I think I might start with one of Dave's £5.69 delivered specials and compare with Al's T amp. It should be an interesting reality check.

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Mike H
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Post by Mike H » Thu Nov 29, 2012 1:03 pm

TDA2050 kit? Would be quick and simple.
 
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simon
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Post by simon » Thu Nov 29, 2012 1:15 pm

What sort of current draw do they have Dave? Looking at the ebay specs I'd guess maybe 1.5A??? I think I might have an 18V trafo at home somewhere (though it might be 15V) but I'm sure it's only 6VA so maybe a bit marginal.

There looks to be plenty of laptop charger options on ebay - found one last night for about the same price as the amp kit.

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Dave the bass
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Post by Dave the bass » Thu Nov 29, 2012 1:32 pm

I can measure at the weekend (when Bat-Face (my Step-daughter) vacates my project room, she's lodging with us at the mo!) if you like but I'm sure its no bigger 2A on music although the laptop PSU's I've used can source about 3 to 4A or so.

TBH, I suspect you/me would never use them loud enough to pull max current anyway.

DTB
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simon
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Post by simon » Thu Nov 29, 2012 6:55 pm

I'm sure you're right Dave. I'm in two minds to either get a wallwart of unknown provenance, or use a trafo and put it all in one box and use the rectification and filtration on the board. I don't know what a good PS for SS looks like but I'm guessing it's not what this board has! But then I don't know what an SMPS does either for that matter. Finding out is part of the fun.

"Bat face" by the way requires a photo!

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Dave the bass
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Post by Dave the bass » Thu Nov 29, 2012 7:50 pm

I can't find any pictures of Bat's faces so you'll have to make do with a picture of Rachel instead....
Image

I'll have a rummage around and see if I can find you a suitable SMPS. I didn't build these for 'HiFi' BTW, I just wanted summat to make a racket in the Shed/Garage/Garden.

DTB
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simon
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Post by simon » Thu Nov 29, 2012 8:54 pm

She's a looker alright Dave. If you do find one that would be great but no stress.

I'm going to put an order in to Rapid for a few bits but can't find the female socket for the laptop type charger - can anyone point me in the right direction, or perhaps Rapid don't carry them?

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thomas
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Post by thomas » Thu Nov 29, 2012 9:04 pm

Amazing coincidence!! That looks just like my Gabrielle.... :D

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Post by simon » Thu Nov 29, 2012 9:16 pm


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pre65
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Post by pre65 » Thu Nov 29, 2012 9:31 pm

Simon, dont forget the promo code 10NOV for carriage free if you order Friday.
People are like stained-glass windows. They sparkle and shine when the sun is out, but when the darkness sets in, their true beauty is revealed only if there is a light from within
Dr Elisabeth Kubler-Ross

G-Popz THE easy listening connoisseur. (Philip)

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Dave the bass
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Post by Dave the bass » Thu Nov 29, 2012 9:35 pm

thomas wrote:Amazing coincidence!! That looks just like my Gabrielle.... :D
Harsh!!!! :lol:

DTB
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pre65
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Post by pre65 » Thu Nov 29, 2012 9:46 pm

Dave the bass wrote:
thomas wrote:Amazing coincidence!! That looks just like my Gabrielle.... :D
Harsh!!!! :lol:

DTB
Harsh would be an understatement if she knew. :lol:
People are like stained-glass windows. They sparkle and shine when the sun is out, but when the darkness sets in, their true beauty is revealed only if there is a light from within
Dr Elisabeth Kubler-Ross

G-Popz THE easy listening connoisseur. (Philip)

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thomas
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Post by thomas » Thu Nov 29, 2012 10:00 pm

Its a love-hate thang at the moment between me and my darling daughter!

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