Dx Blame ST - Builder's thread - post pictures, reviews and comments here please.

[cucicu]

hey men, a technical question about heatsink

i must use an aluminium profilate (L) to screw the final transistor to my heatsink.
the only profilate I found is 2mm thick, 3cmx3cm...do you think 2mm is too thin? or it can be also good?

regards

 

[meanman1964]

The way you've made your PCB you can't use a L shape profile.The PCB has to be a bit larger see pic

 

[cucicu]

yes I can ! 🙂

Would like something like this cause don't have enough space in the chassis to put the L shape as in your picture

what about the thickness of the L shape??

 

[cucicu]

I found an L shape 3mm thick. Can't find a thicker one and dont know if it is good or not

 

[meanman1964]

For my Blame ST I also used a 3mm L shape.
cucicu, clever way of mounting

 

[cucicu]

How was the temperature with 3mm?

 

[meanman1964]

The Blame ST doesn't get hot.I even tested mine only with the L shape as sink for a long time.
A drawback: my L shape was 4mm but I think 3mm is also good.It will transfer the heat fast enough to the main sink

 

[cucicu]

ok...tomorrow the first power on...

 

[cucicu]

Better 1 or 2 diode bridges???

 

[cucicu]

hi, where is possible to buy a pair of dx blame pcb's?
regards

 

[cucicu]

I'm gonna finish my blame but this time I used TIP35/36.
I know many of you will not agree...

edit: what I need now is an idea of wiring the amp in a neat way-.
with dual supply there are always cable going around in the case

 

[cucicu]

hi at all
is there anybody who could share please the gerber files for the dx blame ST amp?
or similar files to etch the pcb (no pdf)?

many thanks

regards

 

[meanman1964]

If you use Sprint layout you can convert the pdf into a sprint layout file .

 

[Project16]

On this site you will find a lot of file 'Sprint Layout' for the production of Mr APEX.
KOMITART

For the DX Blame ST it is here:
????????????? ????????? DX Blame ST.

 

[cucicu]

Many thanks!!

 

[cucicu]

Apex site is an enourmos source of schemativs, layouts...awesome!!!!

Could anybody please suggest a fully tested schematics for dc speaker protection to insert in the dx blame amp? I looked at the one published by carlos but in the 3d seems it is not fully tested and working...many thanks

Regards

 

[smartx21]

Apex site is an enourmos source of schemativs, layouts...awesome!!!!

Could anybody please suggest a fully tested schematics for dc speaker protection to insert in the dx blame amp? I looked at the one published by carlos but in the 3d seems it is not fully tested and working...many thanks

Regards

http://www.diyaudio.com/forums/solid-state/221741-dx-blame-st-dx-super-63.html#post3397511

 

[cucicu]

http://www.diyaudio.com/forums/solid-state/221741-dx-blame-st-dx-super-63.html#post3397511

thank you
it seems the same of apex site.
but is it tested and working?

 

[smartx21]

thank you
it seems the same of apex site.
but is it tested and working?

I use this circuit (originally from Silicon Chip Magazine) in my DX Blame ST. One board per channel. It delays speaker turn on, and fast disconnects speakers when main power is off. And the main protection is against DC on the output. Well, I have had one occurence of DC after an exccessive input signal blew up one of the channels (one driver and one output transistor), and nothing happenend to the speakers.

 

[cucicu]

ok many thanks...
what do you mean with" excessive input signal"?
is the blame not so reliable????