1st ever project finished 2 mins ago - IT PLAYS!! - diyAudio
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Old 1st November 2005, 11:44 PM   #1
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Default 1st ever project finished 2 mins ago - IT PLAYS!!

This is so exciting! I hadn't soldered before this morning ever, and I just did the Sonic Impact mod, with flash resisters and Auricaps in the imput, and stepped attenuator volume control! I can't believe it, its playing out of my nakamichi into some technics fb-s1's perfectly, powered by a 18Ah SLA battery.

14 hrs non stop, including 2 hrs trying to desolder that damn capacitor that i replaced with a panasonic FC 470uF one. Strangely, once I did that, replacing all the wires with solid copper ones was easy, and the suction desolder thing worked perfectly!!

After weeks of reading this forum i actuallty feel like i deserve to be here. Still expecting the sonic impact to blow up any minute but its still playing.. i can't believe it. I was sure i'd botched it several times. All I can say is that little board can take a hell of a lot of punishment! Some of the soldering is strictly agricultural. Didnt do the air core inductors, cos i want to spend the money on a Charlize, but did everything else John May did in Hi FI World. If you read this John "thankyou. your article was perfect for me as a total beginner".

I've been psyching myself up for this for months and months. The main board is just sitting on two thick tube rings, and the auricaps are kind of dangling!!! but what the hell.

Sorry if this is all a bit uninformative to you all, but this site has been brilliant to get me into this. Have been reading a lot of threads here, and getting a bit of the vocabulary. Have even bought two SMPS's off Nuuk, and they're sitting there with me not having a clue how to set them up to plug in, but now i know i will do it pretty easily. Amazing.

Thanks to all of you for your enthusiasm and friendliness on this site, which has really helped one 12 year old going on 43 beginner

YIPPEE YIPPEE YIPPEE YIPPEE YIPPEE YIPPEE
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Old 2nd November 2005, 12:55 AM   #2
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Congratulations!

It looks like the beginning of a lifelong passion, from here

That's the wonder of physics/electronics: it works, independently of our understanding or what we think is our understanding of it (maybe I didn't explain it too well ).

Allow me a few advices or comments:
a) Calm down , get a beer and enjoy the music.
b) Avoid building/modding when tired or sleepy: a mistake is easy made.
c) The best project is the next one.

Good luck!

Mauricio
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Old 2nd November 2005, 07:37 AM   #3
ghemink is offline ghemink  Netherlands
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Quote:
Originally posted by maxlorenz
Congratulations!

It looks like the beginning of a lifelong passion, from here

That's the wonder of physics/electronics: it works, independently of our understanding or what we think is our understanding of it (maybe I didn't explain it too well ).

Allow me a few advices or comments:
a) Calm down , get a beer and enjoy the music.
b) Avoid building/modding when tired or sleepy: a mistake is easy made.
c) The best project is the next one.

Good luck!

Mauricio


And be extra careful with anything that smells like an SMPS as there are very deadly high voltages involved, even after turning them off, deadly high voltage may still be there for some time after switching them off. Getting enthusiastic is OK, but keep safety in mind as some mistakes you can make only once.

Best regards and have fun with Class D

Gertjan
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Old 2nd November 2005, 07:52 AM   #4
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congratulations

i jumped for the first time when my first project worked(tda1554q amp)

safety is vital and so is intricate planning and use of quality components.it will assure u of getting the satisfaction of doing a thing yourself and that to brilliantly.nothing can describe that feeling.
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Old 3rd November 2005, 04:37 PM   #5
johnm is offline johnm  United Kingdom
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Hey Gilbodavid!

Well done :-)

They'll be no looking back now! Glad my article was of some use!

Happy listening!

- John
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Old 3rd November 2005, 05:12 PM   #6
Nuuk is offline Nuuk  United Kingdom
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Yes, well done and heed the advice on the power supply side of things. Always err on the side of safety!

I think there is always an element of amazement when something works, particularly first time. And I know that I pick up every little noise for the first few hours that I listen to a new project. I was listening to a new pre-amp today and thought that I heard little clicks that shouldn't be on the music. It was the door moving with the draft because it wasn't properly shut but my mind was half expecting trouble with the pre-amp!
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The truth need not be veiled, for it veils itself from the eyes of the ignorant.
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Old 3rd November 2005, 05:19 PM   #7
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Thanks for the advice all. Will follow it, especially re SMPS's!!! Thanks again, John. The amp ws run in for about 20 hrs before modding it, and has had another 6 or so, and sounds surprisingly good already, despite needing a lot more. Have been looking inside it, especially at the auricaps, and feel a real sense of satisfaction, in the knowledge too that i "know" it.

Might plug it into my Quads tonight, just to see how its doing against my "made by a friend" set monoblocks.. Hee hee

Suddenly feel ok about repairing a desoldered connection in my Fi Phy phono stage and perhaps even building a headphone amp... I may have got the bug...
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Old 3rd November 2005, 09:32 PM   #8
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Default ok, one more

Never work with bare feet on concrete
or you might end up looking like this guy >

;-)

Bachiano
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