Thanks for the replies I think that I finally understand now. I just came back from the workshop and of course it was ECC83 the tube was named. And the other tube was actually named E82CC which is the same as 12AU7.
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Show posts MenuQuote from: mensur on May 21, 2010, 05:12:23 PM
You must be wrong, cause there is no tube with that name, there are ECC83(same as 12AX7, but just Europian name for it), ECL83 which is triode/pentode (almost the same as 12AX7 in triode section, and weaker EL84 on the pentode section). Maybe one of the letters fell off?
Quote from: E on February 15, 2010, 10:18:41 AMQuote from: tonyharker on January 30, 2010, 02:12:36 PM
Why not try a noisy cricket? There should be enough info here < http://www.beavisaudio.com/projects/NoisyCricket/#Intro > to tell you what to do.
Would that be a better option than the Ruby? Would it be possible to do with an inbuilt speaker? And how are those ultra simple smokey tone amps they have at the bottom?
Is there a guide to all the terms i should know somewhere? I reckon i could read the circuit diagrams - it's not too long since i did it in school.
Oh, and if it's not too much to ask could somebody have a look on Maplins to see if they have everything required? Only i can get a discount there... what sort of tools do i need? Obviously a soldering iron which i've been meaning to buy for ages but other than that i'm not entirely sure.
Thanks for all your help, i appreciate it
Quote from: docz on February 15, 2010, 03:05:20 AM
Well there are a couple of stores that sell these things online. But they are rather expensive. A toroid 30VA 2x12V costs about $50USD, I can find a 6VA for $12USD but I don't believe that is going to cope with the TDA2030. The datasheet for the TDA2030 says it needs a 40VA supply, and 60-80VA for two bridged chips, those toroids cost over $100. Why are transformers so expensive anyway? Isn't it just a chunk of iron wrapped in copper? Haven't we used those for several decades? One would think that the prices of these devices that are practically inside of everything would drop due to the demand.... oh well...I thought solid state would be cheaper than valve amps because the components are cheaper, but it seems it is the same with any amplifier, the transformers and speakers make up 80% of the cost