2stageEF high performance class AB power amp / 200W8R / 400W4R

[thimios]

... parts collected, prepared for soldering 5 power amplifier modules but sometimes it seems to be bewitched: no 18V Z diodes on stock

One moment away from the baby genesis!
Happy soldering.
What kind of solder wire are you using?

 

[astx]

One moment away from the baby genesis!
Happy soldering.
What kind of solder wire are you using?

Thx!

Mostly I'm using "alpha NO CLEAN Fluitin 1532, 0.75mm".
(funny: There is an expiry date printed with 2016.06.03 - but still doesn't "smell" and is good to solder - maybe some RoHS expiry date?)

I have RoHS solder wire too but to solder using the pb-free solder wire is painful ...

BR, Toni

 

[thimios]

I always recall those gleaming glossy soldering pads when Philips made soldering wires was in the market.

 

[astx]

SA2015: using vertical mosfets IXTH80N20L and IXTH48P20P

... the SA2015-VMOS-IXYS assembling adventure has started ...

• 4 modules are for a 4 channel amplifier
• 1 module is for the lab (replacement or testing mods)

BR, Toni

 

[astx]

SA2015: using vertical mosfets IXTH80N20L and IXTH48P20P

... tired. not much progress, a small step forward ...

 

[thimios]

... tired. not much progress, a small step forward ...

Always i go fast up to final test.
Then all my projects stops because of cost

 

[astx]

SA2015: using vertical mosfets IXTH80N20L and IXTH48P20P

... some progress ...

 

[astx]

SA2015: using vertical mosfets IXTH80N20L and IXTH48P20P

... nearly finished ... small heatsinks and output coil not mounted ...

 

[astx]

SA2015: using vertical mosfets IXTH80N20L and IXTH48P20P

... ready for mounting on the main heatsinks ...

 

[thimios]

... ready for mounting on the main heatsinks ...

Excellent!
Bables are alive

 

[thimios]

... ready for mounting on the main heatsinks ...

Excellent!
Babys are alive

 

[astx]

SA2015: using vertical mosfets IXTH80N20L and IXTH48P20P

Thx!

babies?

• SA2015 V-MOSFET (100W@8R, 200W@4R)
  
• bridged 400W@8R
  

BR, Toni

 

[thimios]

Thx!

babies?

• SA2015 V-MOSFET (100W@8R, 200W@4R)
  
• bridged 400W@8R
  

BR, Toni

Really big boys.

 

[astx]

Really big boys.

Yes - small but strong! (BTW: Thimios - you have mail!)

 

[Williams Audio]

Final design sa2013

Hi astx,
Need your help with the power amp sa2013
This project and discussion is quite long and a lot of corrections.
Can you help and show me where is the final design and schematic. Did you build this project to your satisfaction?
I have seen that you changed the main Vcc supply from +/-70 vdc to +/- 63 vdc and a lot others small changes.
I am very curios to know if is working properly.
Your help and answers are very much appreciated.
Best regards,
Williams

 

[astx]

Hi astx,
Need your help with the power amp sa2013
...
Williams

Dear Williams,

have a look at the index in first post of this thread.
SA2013 has been renamed to SA2014. => see index position "A) SA2014 (200W@8R, 400W@4R"

Rail voltages are +/- 72V when listening low power and +/-62V when providing continuous full power 400W@4R.
You need to use minimum 80V capacitors in your power supply when using 2x50V transformers. For a single channel a 600VA transformer is recommended.

The amplifier is running perfect nearly every day. No known problems.

BR, Toni

P.S.: Steve aka "SGK" has build it also successfully - see links in index.

 

[thimios]

SA2015 amplifier case

Just arrived!

 

[astx]

Wow - looks like you've got a case from Modu!

Have Fun, Toni

 

[thimios]

Wow - looks like you've got a case from Modu!

Have Fun, Toni

Yes this is a case from modu!

 

[thimios]

Unpacking procedur.

The first time that i be able to have such a thing!
I hope that my SA 2015 will be very happy in this house soon.