SARA-2016

[alexya]

and PSU wiring for amplifier power supply (attention I made the plug for my needs)

 

[alexya]

As you can see we have two diodes D1, D2 and a resistor R4 in which they must be connected to the amplifier housing, how is it better all 3 connected to the housing or only two diodes D1, D2, or only the resistor R4?

 

[greierasul]

As you can see we have two diodes D1, D2 and a resistor R4 in which they must be connected to the amplifier housing, how is it better all 3 connected to the housing or only two diodes D1, D2, or only the resistor R4?

Or maybe a stright wire without ground-lift.

 

[alexya]

A little more work on the high-performance SARA 2016 amplifier, connections and more ,,,

 

[alexya]

Last checks on the amplifier before being completed, voltage 56.5 ± DC on both branches, bias adjusted to 15mV, offset 3.9mV, of course I will mount the L=1.5mH coil with 10R resistance in parallel

 

[alexya]

The finished amplifier put to the test, I am amazed by the fact that there is no background noise (with the volume at maximum, the first time I thought there were some problems with the speakers, I went to listen to nothing but honestly no background noise, maybe from the large capacitors in the filter) the amplifier works, what can I say, respect for whoever created the "

greierasul​

" scheme, thanks

 

[greierasul]

You are welcome. 🙂

 

[odiosu]

I intend to make a new variant in which I use in the current sources for the input transistors double transistors - FMBM5401(q1,q13,q7,q8) and FMBM5551(q2,q20,q26,q27). I am curious if he tried someone and with what results.
thank you

 

[chat72]

My sara2016, output transistors are sanken c6145 and a2223.

 

[fuego]

Which components are marked US and what value are the capacitors inserted with them?
Or maybe someone has the electrical diagram
Thanks

 

[greierasul]

Which components are marked US and what value are the capacitors inserted with them?
Or maybe someone has the electrical diagram
Thanks

Most likely it is about "SN" - suppressing noise capacitor. You can put smd capacitors, 1nF to 10nF at high voltage >100vdc. Or....you can omit them.

 

[Vunce]

Snubber?

 

[greierasul]

Snubber?

Almost.

 

[HRDSTL]

Hi guys,
I am about to finish a simple project 75W/4 ohm (class B), mirror pcb, dual mono.

Since the new year I want to put on Sara 2016 amplifier. I want to ask, what kind of boards did you have made? 1oz or 2oz...
Thank You!

PS: Does anyone have the original ONSEMI bc560c for sale? These are no longer in production. 🤣

 

[greierasul]

If you can, use 2oz for PCB tracks. 1oz is good too.
You can use the pair BC546/BC556 but you must be careful at the pinout.

 

[alexya]

now I have in the project 3 SARA 2016 amplifiers, tri-amps, horn , crossover active

 

[Vunce]

Pictures! ^^^
😉

 

[HRDSTL]

Friends I am starting to build this amplifier, but I would like to know what is the sound difference between high slew rate vs moderate, ...
I'd also be interested to know what is the Slew Rate for the moderate version.

 

[greierasul]

50V/us

 

[HRDSTL]

PCBs for SARA 2016 amplifier are already at home, ...I have all transistors for it in my home-box. I just need to order resistors and capacitors. Now I have the FH9HVX project running, so SARA2016 has to wait for some time. 😂