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Help please: Power supply questions for first DIY amplifier

post #1 of 6
12/30/11 at 3:33am
Thread Starter 

Hi everyone!

Im about to build my first headphone amplifier ( gonna order a kit off ebay) I love the look of the tube amps eg..http://www.ebay.com.au/itm/Pre-amp-Tube-Amplifier-Kit-6N3-SRPP-Audio-DIY-New-/260723926434?pt=LH_DefaultDomain_0&hash=item3cb45b65a2#ht_2895wt_702

 

http://www.ebay.com.au/itm/NEW-DIY-Pre-amp-Tube-Amplifier-Kit-6N3-Transformer-/110800706968?pt=LH_DefaultDomain_0&hash=item19cc3c9d98#ht_6431wt_1050

 

and enjoy building stuff myself but I dont know much about electronics and i cant understand how im meant to power the dam thing! They all have rows of 4 connectors to put the power in but where do i get four power cords from? i have heaps of transformers and supplies like this 1 http://cdnsupport.gateway.com/s/SOUND/speakers/102033/power_adapter01.jpg laying around that are 12v and should work also I have a couple 4 and 5 volt but the amps say they need 6.3v is 5v close enough to run it?

All answers would be highly appreciated! I am so lost atm but really love building my own things.

Thanks, any other tips are welcome.

Cheers

 

And yes I have been searching everything trying to work it out but i just cant get these last few details down.

 

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post #2 of 6
12/30/11 at 4:19am

Seriously you should avoid both of those kits, they both use 6.3volts for the tube heaters but very high voltages for the tubes, and as a first project it could be a big mistake, I'd suggest you start with battery powered, you can advance as you learn more

 

cheers

FRED

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post #3 of 6
12/30/11 at 4:21am
Thread Starter 

would this http://www.jaycar.com.au/productView.asp?ID=MF1202&keywords=12v+transformer&form=KEYWORD be any good? if so what wires do i connect where?

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post #4 of 6
12/30/11 at 5:05am

 

No offence, but do not connect a mains transformer to anything if you have to ask.

 

If you must build a tube amp, perhaps a millet hybrid. It's all Extra Low Voltage so exteremely unlikely you'll kill yourself, still technically possible though. wink.gif

 

Even then I'd perhaps suggest something even smaller like a Cmoy as a first project to see if you enjoy it and give you some basic skills.

 

I see you posted a jaycar link, are you from Australia ?


Edited by splaz - 12/30/11 at 5:08am
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post #5 of 6
12/30/11 at 5:17am
Thread Starter 

Thanks for the info, ill stick away from those 1's then! Yeah I am from Syd, how about you?

also this one looks simpler - http://www.ebay.com.au/itm/6N11-Tube-Buffer-Amp-Audio-preamp-diy-kit-new-/220785300042?pt=Vintage_Electronics_R2&hash=item3367d4524a#ht_2324wt_725 has a 12v in jack, does that look alright to you guys or no no?

Yeah im deff gonna build a cmoy but just for fun and to learn but i love the idea of these headphone amps + wana learn

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post #6 of 6
12/30/11 at 3:02pm

That looks like a good start, use an AC wall wart from Jaycars and you'll not risk killing yourself :-)

 

cheers

FRED

 

 

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