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Old 2nd April 2013, 03:44 PM   #1
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Default Looking for a complete DIY amp

Hi everyone,

I'm looking at a complete great AMP to build and to link with a Logitech squeezebox duet via RCA.

i was thinking about a tube amplifier to give it a try (but people told me that my budget is too low for that), let's do it in a "non-tube way"
between 100 & 300€ big bang for the buck.
that can be shipped to France
mainly for beginner (i've done so far the Objective2 headphone amp with success, and plan to do the SUBBU DAC V3)
where only the case would have to be purchased afterward (or included).

If this post has maybe already been raised, sorry for the duplicate.

Thank you for your help and advises
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Old 2nd April 2013, 07:10 PM   #2
djoffe is online now djoffe  United States
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Not tubes, but complete, and within your stated price range, and a complete amp kit. Everything but the solder!

Akitika GT-101 Audio Power Amplifier Kit
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Old 2nd April 2013, 11:15 PM   #3
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thanks djoffe,
this is a good start project ;-)
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Old 3rd April 2013, 07:18 PM   #4
rsavas is offline rsavas  Canada
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Location: Ontario
Default Looking for a complete DIY amp

As a comparison, this is what I built, it is 25W/ch, drives 4 ohms just fine.
I call it a Portable Media Player/Radio
Si4735 radio
BU9458 USB/SD memory stick player
PCM2902B USB Codec(ext PC Sound card)
TPA3100D2 class "D" amp, does not run off USB power!!
MAX9729 pre-amp/headphone amp
The mechanics are not fine tuned, but you can always do better.

The amp kit referenced 'GT-101' is a good deal however.Looks to be Class "AB", and I see modules, certainly not discrete, can't be sure what they are.

Rick
Attached Images
File Type: jpg Portable Stereo patial assy.jpg (1.03 MB, 253 views)
File Type: jpg Portable Stereo in box 001.jpg (980.5 KB, 240 views)

Last edited by rsavas; 3rd April 2013 at 07:27 PM.
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Old 3rd April 2013, 07:33 PM   #5
rsavas is offline rsavas  Canada
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Join Date: Aug 2012
Location: Ontario
Okay, I see that 'GT-101' is LM3886 based!!
Take a look at Bob Cordell's Super Gain Clone!! for a probably improved implementation.
CordellAudio.com - The Super Gain Clone™

Last edited by rsavas; 3rd April 2013 at 07:49 PM.
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Old 4th April 2013, 05:32 PM   #6
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Hi guys, thanks for these inputs
right now, i'm not enough skilled for understanding exactly what component is doing what in this electrical world, and after looking at the Cordel Super Gain Clone i'm almost completely lost ;-)
what i'm looking for is more something like a LEGO with soldering, i like building electrical stuff but i do not really understand the role of each component, so i think the GT-101 could be a good starting point and maybe also reading the book of Cordel in order to understand better what i'll do :-)
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Old 4th April 2013, 05:53 PM   #7
rsavas is offline rsavas  Canada
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Location: Ontario
Nothing wrong with GT-101 as a starting point & going from there. Mechanical bits can be costly & this is a good deal.
Give me a PM if you want to add some extra functionality to the box. I can do the soldering if you are not up for it = lego.
Rick
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Old 5th April 2013, 10:02 PM   #8
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i'm reminding that i have a T-amp sonic impact TA2020, it was used in my previous house in the bathroom, do you know if this little amp could sound great with the Squeezebox and full range speakers like the fostex?
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Old 6th April 2013, 07:47 PM   #9
kimon is offline kimon  Greece
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Location: Petroupolis,Attica
Very nice work rsavas.Is it a kit or a project for a complete product?Looks very interesting!
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Old 6th April 2013, 11:30 PM   #10
sibbeli is offline sibbeli  Sweden
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What about one of professor Leachs amps?

They are what i am going tó build as my first amp. I am going for the superamp, and maybe even modify it with another 4 pair of output devices. I would like to reach 450w at 8R

Cordells book is a must. It is the best written and understandable of the 3 other i have read in. thats Slone and Self and some other author i dont remember.
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