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Old 10th August 2009, 04:12 PM   #1201
marckus is offline marckus  Romania
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Yes,thanks...first time i tried etching whit the photo imprint method...it worked quite nice. Thanks again to BrianGT for the design.
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File Type: jpg gain.jpg (85.7 KB, 2609 views)
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Old 20th August 2009, 05:51 AM   #1202
osscar is offline osscar  Latvia
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Hi,

Congratulations to all team of administration with successful forum upgrade!

Here are pictures of my latest DIY Project gainclone the G:


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Back panel

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Inside (diy heatsink from two old ones )

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Ready for testing

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During tests side by side with Leach SS


quick specs:

Two transformers 2x24VAC 100W (on caps - 34VDC);
Two bridges from 16 MUR820 ;
Four RIFA low ESR 15 000uf 40V;
p2p wiring;
LM3875TF non inverting circuit with zobel network (0,1uf + 10R);
Case from eBay;
diy 4mm aluminium chassis;
2 apem white 230V LED (flat type);
Key switch (mechanical child lock  );
Two silver G letters with Swarovski crystal

Amp sounds really nice and powerful in whole range (very detailed High and Mid range, also low end is good)-no doubt, but I still prefer my SS leach (of course is in different weight class )
I will try to measure amp parameters later.
So, next will be some tube project i hope...
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Old 20th August 2009, 07:59 AM   #1203
Ted205 is offline Ted205  United Kingdom
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osscar where did you get the led setup for the front panel ?

are they running off the mains ?
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Old 20th August 2009, 08:08 AM   #1204
osscar is offline osscar  Latvia
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http://www.apemswitches.be/1-26847-S...ails.php?id=80

Yes - AC 230V, parallel with primary windings.
here is closer look on front panel:

Click the image to open in full size.
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Last edited by osscar; 20th August 2009 at 08:17 AM. Reason: picture inserted
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Old 27th August 2009, 04:47 AM   #1205
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Here is my first ever DIY audio creation. PD LM3875 gainclone
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Old 27th August 2009, 12:39 PM   #1206
karma is offline karma  Canada
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nice
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Old 28th August 2009, 04:37 AM   #1207
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Quote:
Originally Posted by ZirconiumZephyr View Post
Here is my first ever DIY audio creation. PD LM3875 gainclone
Well done, I like it!..
Are you using it for Headphone amp?
Because if you do.That is a lot power for it lol
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Old 28th August 2009, 05:53 AM   #1208
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headphone jack is just for show atm Managed to fail at planning that one quite right. It's just filling in the hole now while I figure out how to implement it. Just plan on running headphones occasionally.
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Old 28th August 2009, 03:34 PM   #1209
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Quote:
Originally Posted by ZirconiumZephyr View Post
headphone jack is just for show atm Managed to fail at planning that one quite right. It's just filling in the hole now while I figure out how to implement it. Just plan on running headphones occasionally.
Well you can use a toggle switch for on/off
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Old 28th August 2009, 03:55 PM   #1210
Puffin is offline Puffin  United Kingdom
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If you want to make a Headphone-Out use this. Simples

http://sound.westhost.com/project100.htm
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