Studio Reference Amplifier

[Sunny22g]

Last Sir I need preamplifier of this .I read gurpreet post he is also asking about this .

 

[vargasmongo3435]

I don't use preamp but hey, here are many good designs ask around guys will always help



Best Regards
Juan

 

[Gurpreet Turna]

Here two problems in my work
1, Sir u right my psu capacitor bad some time they produce hum or little sound. Now I change them with 15000uf/80v best brands.
2, As I say in last post I m rookies, I use wrong resistances because value on resistance r blur. Likely A Diy member
(Who come in my city for business reason) he contact me and check the board then we noticed we use wrong resistance. I replaced all these resistance, now amplifier working superb. I feel very sorry with my little mistake we disturb u so many times. But with ur experience amplifier working fine.
3, one more thing we just play the amp with 100w series load in main supply, any suggestions before removing that load. Sorry for my mistake and Big thanks you and Mr Miles depth from my Heart.
Regards
Sunny

Finally sunny u taste the piece of cake.Congratulations 😤

Here is my PSU unit now

Wow 😲 nice in next trip in ur area these capacitor is mine😃

Mr.vargasmongo3435 please tell me and sunny which Preamp or buffer use with SR200
Regards
Gurpreet Turna

 

[vargasmongo3435]

there is one that Mr. Alex MM made the PCB layout I don't remember the post number sorry is been so many new designs I lost track lol

 

[Gurpreet Turna]

crossoer

Sorry Guys, I know that this thread not for crossover but I reassemble this 3way crossover after 20 years.

 

[Sunny22g]

there is one that Mr. Alex MM made the PCB layout I don't remember the post number sorry is been so many new designs I lost track lol

Hello .Sir can I use MOSFETs on sr200

 

[vargasmongo3435]

I think it can be done but the circuity might change a lot to accomdated mosfets I would't changed

 

[Sunny22g]

I think it can be done but the circuity might change a lot to accomdated mosfets I would't changed

Sound quality is too good sir but need power. Then sir what I do.can u increase power

 

[prasi]

Hello .Sir can I use MOSFETs on sr200

simply because you have had a cat , dont make it a dog. Check out FR100 by Mr. Mile in this thread.

 

[Sunny22g]

Sr200

Here is my 2nd board of sr200

 

[Sunny22g]

It's looking very bad ..But I am not pro

 

[apexaudio]

Sound quality is too good sir but need power. Then sir what I do.can u increase power

Go to SR300 or SR800

 

[Sunny22g]

Go to SR300 or SR800

Greetings my Lords .But u say it's for commercials not diy (sr800) sry for my bad English

 

[vargasmongo3435]

hello guys I want to keep it all about the Apex SR200 subjet I need to ask a question Mr. thimios add this components to the his build I have a copy layout from Mr. Alex MM that I save for a long time I add thimios's cap 18pF to the layout also a 100pF cap too, I have every single components identified too, are this componetes placed correctly?



Note: this is Alex MM's design not mine I just like it so much that I copied lol



I know this a long time project that I haven't try yet but I want it to be sure all is correct before I order a few PCB to try out

 

[Sunny22g]

Sir Juan sr200 really need preamp ? because I am playing music with my phone .I cannot understand why sound level not going High .is my PSU like transform ac 45 0 45 8 amp. Is to less

 

[vargasmongo3435]

have you try using a PC audio out? I use PC audio out and works really well maybe the input is not getting much audio signal probably less than 500mV try PC or mp3 audio signal

 

[Sunny22g]

It's last hope to go loud sound .or any other options to go loud ?

 

[vargasmongo3435]

Sunny check how much power you have measure using a dummy load of 8 to 4 ohms and to se how much power you got the design should give around 150W or more check post How to measure Wattage of an Amp #2 if you still have probles check feedback resistor maybe you place a wrong value I mean it can happen to all of us when we are in rush

 

[Sunny22g]

Sir Juan can I use use apex PSU 7 with sr200 .if yes then can u tell about safty.mean if something wrong then automatic go protection mode

 

[44250]

...soon to be in front of many Apex amplifiers: YouTube