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Deleted member 550749
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Deleted member 550749
Another question, used here ceramic capacitors 470pf and 100pf but I have polystyrene capasitor, googled and found polystyrene r better than ceramic so can I use that or replace that and is it gonna change sound quality or the performance?? 🤔
That will work perfect. Ceramic caps will work. Some ceramics are better than others (C0G) - read ... https://www.electronics-notes.com/a.../ceramic-dielectric-types-c0g-x7r-z5u-y5v.php
Have fun !!
OS
Have fun !!
OS
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Deleted member 550749
Add 2R2 "basestopper" resistors between drivers and final output devices.
OS
Also , 15pF at feedback sort of cancels out the increased loop gain at 20Khz that 2 pole compensation gives. Omit it.
Your 470pF/100pF VAS compensation (with 1K resistor) is nearly the "Wolverine/Badger" with 2Mhz unity gain.
Wolverine/Badger has NO lead compensation (15pF) capacitor.
You will get .02%THD with this amp (one pair outputs).
Decouple both power rails with 10R/.1uF/22-47uF
Actually , you would have a (almost) "Badger" amp EF2 (Reference - below),
A very stable reliable amp ....
OS
Your 470pF/100pF VAS compensation (with 1K resistor) is nearly the "Wolverine/Badger" with 2Mhz unity gain.
Wolverine/Badger has NO lead compensation (15pF) capacitor.
You will get .02%THD with this amp (one pair outputs).
Decouple both power rails with 10R/.1uF/22-47uF
Actually , you would have a (almost) "Badger" amp EF2 (Reference - below),
A very stable reliable amp ....
OS
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Deleted member 550749
Looks simpler, also gonna try this schem , thanks sir , I love less amount of power but good quality sound, specially for high and mids for listening piano, violin etc music , I'm musical guy 🤣 thanks sir giving time here appreciate 👍♥️🤓 🙏
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Deleted member 550749
As your guide, removed 15pf feedback cap, added power rail decoupling cap, and added power transistor fast turn off cap ,
Nope , look at the schema. Second set of power supply decoupling caps before the 22R.
What you are trying to do is filter the power rails for the IPS/VAS. Reduce the ripple going back
to the VAS by 20-30db.
You will find this standard even in OEM consumer products. They would not add components without cause - PROFIT !
OS
What you are trying to do is filter the power rails for the IPS/VAS. Reduce the ripple going back
to the VAS by 20-30db.
You will find this standard even in OEM consumer products. They would not add components without cause - PROFIT !
OS
It might seem like a lot more components , but all do a very good job at making the power clean.
Better amps that cost many $$$ , will use these tricks to be "audiophile".
Can you hear this ?? With high power levels and good speakers - YES !
The amp you are building can actually (Wolverine) be equal to 3000$ "audiophile" amps.
Wolverine is the best , at 1-2 part per million distortion.
OS
Better amps that cost many $$$ , will use these tricks to be "audiophile".
Can you hear this ?? With high power levels and good speakers - YES !
The amp you are building can actually (Wolverine) be equal to 3000$ "audiophile" amps.
Wolverine is the best , at 1-2 part per million distortion.
OS
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Deleted member 550749
Yes , my power has 4700uf +100nf parallel cap , it's enough for me, I just wanted to make at least good amp with limited resources, which available nearby to me , thanks sir now amp sounding better than before, little bit more less distortion 👍 thanks sir now , closing this thread, my job is done 👍 thanks sir for giving valuable time to me ,again big respect to u for helping ❤️ from India 🙏
That now looks like a very stable , reliable amp. Will run for 20 years (caps go bad). !
OS
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Deleted member 550749
Yep without ur help impossible for me 👍 thanks, now anyone can make it , I love this site because it's an open place for all to talk, sharing knowledge, educational no hate no competition, perfect place 🙏❤️
Hello MrAK87, great work!!
Just a request if can you upload the final schematic with all the component values, please?
Just a request if can you upload the final schematic with all the component values, please?