Post your Solid State pics here

[fotios]

Some relaxing pictures

I know that you are enjoying seeing pieces of craftsmanship, like myself.
Here some pics of the partner, a homemade 2X170W/8Ω Class AB BJT amplifier built 12 years ago.

 

[LKA]

great!

 

[vargasmongo3435]

I love the design well ventilated too

 

[fotios]

Thanks for your love
A detail that is not easily visible, is that the two top-bottom covers are made from 3mm thick alu sheet and are screwed tightly on the 2 heatsinks, thus working as assistants in heat moving. Actually, the whole casing (included the 4mm front panel) is running almost the same hot in any instance

 

[mikebeth]

Pioneer SX-750 into the 21st Century one PCB at a time

Finished my personal project - bringing my Pioneer SX-750 into the 21st century - one PCB at a time!

Finished today - Version 3.1 of the amplifier replacement board. THD-1 at full power: 0.0009% with Transitional Miller Compensation (TMC)

Previous PCB replacement - the Regulated Power Supply/Protection circuit board. More efficient (much less waste heat), adjustable with better regulation, and looking much more high-tech being almost all SMD devices.

 

[mhouston]

I know that you are enjoying seeing pieces of craftsmanship, like myself.
Here some pics of the partner, a homemade 2X170W/8Ω Class AB BJT amplifier built 12 years ago.

Pro looking.

 

[DIMDAS]

I know that you are enjoying seeing pieces of craftsmanship, like myself.
Here some pics of the partner, a homemade 2X170W/8Ω Class AB BJT amplifier built 12 years ago.

good morning, fotios.
very good job, really professional. congratulations!

 

[Gurpreet Turna]

I know that you are enjoying seeing pieces of craftsmanship, like myself.
Here some pics of the partner, a homemade 2X170W/8Ω Class AB BJT amplifier built 12 years ago.

PCB Layout please 😊

 

[fotios]

Here the PCB layout. The same layout is used for both channels, for that reason the two headers CON1 and CON4 which are paralleled, and only one is used.

 

[zman01]

fotios,

Superb execution!

mikebeth,

Nice project!

 

[Mrcloc]

I built two small speakers for my desk, and naturally they need an amplifier. So I've put together two small amplifiers mostly from parts I had lying around. Should do about 40W into each, which is perfect.

 

[vitalica]

I am very happy that I finally managed to finish this project with TSSA V4 amplifier. I made a dual mono variant, with 2x52VAC / 1000VA transformer, with RIFA PEH169 capacitors. Very detailed, huge dynamics, fast bass and fist, I just love it.

 

[fotios]

Great job vitalica, very nice enclosures.

 

[venar]

1/3 of the heatsinks are for decorative reasons!

 

[zman01]

Well done vitalica!

 

[vitalica]

case

Are you sure ? Did you ask how much total bias it has?

1/3 of the heatsinks are for decorative reasons!

 

[fotios]

I agree, all heatsinks look very well joined. I suppose you have applied thermal conductive paste on all join surfaces

 

[venar]

Are you sure ? Did you ask how much total bias it has?

As i can see the output devices are bolt to the 2/3 of the heatsinks as active cooling!
So no matter how much total bias it has( the more bias the worst thermal resistant to the third party of the sink even thermal paste applied) temperature measurements will tell you the truth
Well build box for the show not for the go!
You need to redesign your board if you want to get the most from your <high bias> amp with your chosen box

 

[AudioSan]

First of. That is not active cooling. It is the definition of passive cooling.
And you are wrong about the third heatsink only being for show. It will ofcourse be less effective. But is will still have effect. So will the top, botom, rear and front panel too.

 

[venar]

Of course it's a passive cooling!
It's <active thermal path > for the output devices that are bolt on them!!!
No effective at all!heat spreading is just bad