| r!sc! |
My second DIY project (Non O/S 1543 DAC is first). It's IGC with reg (LM338T) supply from Pedja's site. Thanks to all on this Forum, especially to Pedja, Nuuk and Peter.
There will be some improvements in design (buffer).
The thing is death quiet, becouse I still don't have
loudspeakers :D
Some pics... |
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| brianuk |
Did you make the boxes ?
If so how ?
Very nice!
:smash:
Hope it sounds as good as it looks! |
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| fcel |
Very, very nice.
You must have very strong motivation or have lots of energy to have built the amp without having (owning?) speakers! Let's hear your explanation. |
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| Peleus |
Hi! r!sc!,
This amp is quite impressive. Nice job!
I once made an amp without speakers and DAC, because I made these theree machines once!:)
This was quite hard work to do, especially to a newbie, like me, in audio diy. After three monthes hard work and inquiering diyers all over Taiwan, I finally got great sounds from our systems. |
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| jeff mai |
Beautiful job!
Safety tip - next project use female umbilical connectors on the external power supply. Less chance of someone receiving a shock if they were to energise the PSU without connecting it to the amp. |
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| Ropie |
Why is the work from Eastern Europe always so great? :D I've never seen a picture of a messy amp from Serbia, Croatia, etc. They always look this good!
Please buy some cheap speakers to test it with very soon - it's always good to have a pair of these around for testing new amps anyway. |
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| r!sc! |
First, thanks to all.
Second, my english is bad, so don't laugh :)
to brianuk:
Metal plate is cuted in local store. There we call it Black metal plate.
Actualy it's not black. I choose 3mm thickness. The plates is not pure
metal, it's some composite.
The wood on sides, with my instructions, made by local carpenter.
Else is made by my hand (perforation, shuffle, etc)
Long time i was worked on cutting plan and layout of component in amp.
to fcel:
I'm already heard one GC. It's not tighten like this, but sound great.
to Peleus:
I wish to have the same experience like U :)
to jeff mai:
This XLR is only thing I found local.
btw, there is no reason to scare, i'm only person who have approach to amp :)
to Ropie:
I don't know ;). I will buy some speakers next week. I can't wait to listen this amp.
Again, thanks to all.
Regards, Boban |
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| BrianGT |
Looks nice, and the dac and amplifier go together nicely. Can you show pictures of the inside of the dac?
--
Brian |
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| brianuk |
:hbeat: :smash: :hbeat: :smash: :hbeat: :smash:
That looks so professional.
Im so jealous! :)
How much did that all cost to make ?
The cases together look fantastic, how much approximately did just the cases cost ?
I demand that you send them to me :hypno1: :hypno2: :hypno1: :hypno2:
Well it was worth a try :irked:
Your english is good enough!
Well done.
I love to see great results produced by people for their own enjoyment rather than companies making lots of profit!
(A little profit is ok though)
Enjoy,
Brian. |
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| Nuuk |
I have to agree, that is one very good Gainclone ;)
I have just one question. It looks as though the power is fed to the amps through a couple of three pin XLR plugs (yes sockets would be better).
If you are using the regulated PSU, you would need four wires per channel, so why are they only three pin plugs? :confused: |
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| r!sc! |
Thanks Nuuk.
I have transf with two secondaries. One pin of XLR have no function.
Everything is like on the Pedja's site. |
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| r!sc! |
| quote: | Originally posted by Nuuk
If you are using the regulated PSU, you would need four wires per channel, so why are they only three pin plugs? :confused: |
The two bridge rectifiers is in the second box.
Boban |
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| jeff mai |
| quote: | Originally posted by r!sc!
btw, there is no reason to scare, i'm only person who have approach to amp :) |
Hi Boban,
Today you are the only person to approach the amp, but maybe not tomorrow or the next day.
Don't worry, I don't think it's a problem with the low volatges of a Gainclone. Just remember it for the next project - particularly if it's a higher voltage.
Jeff |
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| digi01 |
| impressive!very nice. |
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| Nuuk |
| quote: | | The two bridge rectifiers is in the second box. |
I understand now Boban. You are using one supply for both channels.
In my design, I have separate regulated supplies for each channel but it does mean that I have a lot of wires to connect between the PSU case and the amp! :smash: |
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| yuval |
Nuuk,
did you try to put TX with amp ? does it really makes any difference ? I know it's better in therory...
Yuval |
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| Nuuk |
| quote: | | did you try to put TX with amp ? does it really makes any difference ? I know it's better in therory... |
This is one of those situations where there are arguments for and against.
I am using largish 300VA transformers (two of them) and another torroidal for the buffer supply so it would need to be a large box to get everything in together.
I have ordered two six pole connectors today which allow me to put the three transformers and bridges in one box and connect them to the amp box with just two umbilicals.
I have built GC's with the transformers in the amp case and one with a separate PSU case but they have been slightly different configurations so I was not able to make direct comparisons of the sound quality. |
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| yuval |
| quote: | | I am using largish 300VA transformers (two of them) |
out of curiosity, what secondaries are you using ?
I'm still not sure what to choose 18V or 25V taking in account I'm going to
try a simple PSU first and right after a regulated version. I tends to prefer
the lower voltage as I can't stand bright or edgy sound (I'm a valve man ;)
main amp is WAD kit6550 ).
Yuval |
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| Nuuk |
| quote: | | out of curiosity, what secondaries are you using ? |
My 300Va's have 25VAC secondaries but if I was buying new ones, I would go for 18VAC. If building a regulated supply, I would say the ideal is around 22VAC if you can find them. |
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| Stabist |
Boban - first greetings from Slovenia! :D
Really like your design - I myself I'm right now doing something similar for my MC preamp - the combination of black metal parts and wood on sides ... And after seeing your's work I see it will look very nice :D
I wish you will buy your speakers soon so you can enjoy ASAP in the sound of that beautiful diy setup! |
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| brianuk |
Boban,
:smash: :smash: :smash: :smash: :smash:
I think you should make us all very angry by building your own speakers - with the SAME wooden sides and then black (sprayed mdf) up the middle and tops. The sides would be mdf too, but then hidden by the real wood.
Then go active xover with dual gainclones! :devilr:
No crossover's in speakers must suit gainclones i think - the power and control would be fantastic.
Now that would look great, i'd probably want to buy it all from you!
Well done again! |
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