Class D Amp Photo Gallery

[hllbll]

They look great

What paint did you use? Did it require lots of coats.

David

Thanks!

I used regular car paints, black acrylic and red metal base coat. Maybe 2 to 3 coats of clear.

 

[DQ828]

Thanks!

I used regular car paints, black acrylic and red metal base coat. Maybe 2 to 3 coats of clear.

How did you get the Red/Black pattern on the body parts?

 

[hllbll]

How did you get the Red/Black pattern on the body parts?

Black acrylic for base color, after it cured/dried I sprayed one really wet coat of red metallic and broke the coating with cling film. Quite simple trick.

 

[Deleted member 148505]

Stereo JLAudiophile-250D.

Next build, I'll use an ebay enclosure like in the second pic

 

[mravlca]

Just another TPA3106D1 amp. I am using LT1083 for power supply.
BR,
Ales

 

[maxw]

Interesting design! Is that safe having such a thin layer between the transformer coils and the outside world? It looks like you don't have mains earth connected?

 

[mravlca]

Interesting design! Is that safe having such a thin layer between the transformer coils and the outside world? It looks like you don't have mains earth connected?

The amp is sitting in a very safe place so no worries about that thin layer. Acctually it can withstand quite big force. I still need to connect mains ground, though I am not having any problems without it.

BR,
Ales

 

[nigelwright7557]

A stereo class d 500+500 amplifier.

An externally hosted image should be here but it was not working when we last tested it.

 

[doctormord]

I still need to connect mains ground, though I am not having any problems without it.

BR,
Ales

Must do, otherwise this lulls somebody into a false sense of security.

 

[ClefChef]

My Abacus TPA3116 amplifier

 

[korzhuk]

My Class D amp. 2*L15D+Connexelectronic SMPS800RE. Supply voltage +/-58 v.

 

[korzhuk]

Pictures:

 

[tuo]

Nice use of the syringe and a bottom of a can as a shaft and a knob for the volume control.

 

[doctormord]

Russian coupling-capacitors? How does it sounds?

 

[Calvin]

Hi,

just became aware of this thread, especially #892.

You may read Forum Rules, Notes 2 again
Excerpt:

While most projects on this site deal with electricity and construction which inherently involve some risk, particularly dangerous topics and procedures should include a warning in the thread that adequately explains these risks. Certain inherently dangerous topics are not allowed.
If you attempt to make something and it blows up, or turns expensive parts into charcoal, or just doesn't work the way you were hoping, that's between you and the person posting the project or idea.

And now, take a second look at this class-D-from-hell and think about safety regulations again

jauu
Calvin

ps. the sound could well become a short dry ´Poof´.

 

[tfboy]

Calvin, is there something in korzhuk's design that particularly worries you? Yes, it's a very vented case, and I'm not sure whether there's a safety earth connected. But the photos look ok to me and a lot better / safer than some other designs I've seen.

 

[doctormord]

I noted some of the problems.

 

[Calvin]

Hi,

all of the above and maybe more ..
- RCA connectors insulated?
- metallic Poti shaft to knob?
- double insulation?

We all appreciate young enterprising man, building something on their own.
And most deserve the praise in full rightness.
Unfortunately not every build complies with the most basic safety rules.
But there will always be at least one dumbo around aahing and oohing about audiophool parts and weirdo-devices-from-another-planet, but failing to recognize the gross disrespect of necessary (safety) basics.
Built-in ´planned obsolescence´ of the user is nothing I´d like to rave about.

jauu
Calvin

 

[korzhuk]

Hi, everybody!
Thank you very much for your attention and posts (Especially [besonders] Dr.Mord).
I will fix indicated problems.
At this point I added the insulation SMPS to case top&botom and the wire chassis to electrical earth connected.

To Calvin:
1) RCA connectors are insulated to case. Is it right?
2) Poti shaft don't have electric contact to knob. Is it right?
3) "class-D-from-hell" don't have Double insulation. It have (resulting your recommendation) Class I protection.


Mit freundlichen Grüßen,
korzhuk

 

[Mazila]

My congratulations on the completion of Projects Michael!