Studio Reference Amplifier

[Sunny22g]

Sr200

That's ok - my idea was to see what you mean by "popped capacitor" looking at its photo. Please give more information when you describe the problem.
There are only two reasons for the capacitor to pop - overvoltage and wrong polarity. Which one took place in your case?

Lack of bass is very subjective. Pretty easy to diagnose making a few measurements with the signal generator in place. Otherwise, we can only guess. In case the PSU provides the steady rails, powerful enough, the only part limiting the bass is the input filter C1, R3. What type of capacitor do you use for C1?

New pcb

 

[turk 182]

what sort of testing do you do before populating a board with components, checking for both continuity and isolation is a must for me, but that's because in producing some of my own boards i've managed to have boards with both problems.

 

[Gurpreet Turna]

PSU FX100

What change need in PSU FX100 for 30v AC.
Regards
Gurpreet

 

[Gurpreet Turna]

APEX SR20
YouTube

 

[Sunny22g]

APEX SR20
YouTube

Good job sir

 

[Sunny22g]

Greetings guys .My main problem is my sr200 is not go louder.i have 12 "woofer 8 ohm . 135mm magnet..Can any 1 tell me how to solved this .I am using ttc5200.or tta1943 is that problem.or small transistor problem

 

[thimios]

Greetings guys .My main problem is my sr200 is not go louder.i have 12 "woofer 8 ohm . 135mm magnet..Can any 1 tell me how to solved this .I am using ttc5200.or tta1943 is that problem.or small transistor problem

How we can help without measurements and clear pictures?
What you are using as input signal?
Is the level enough for full output?
Look at the resistors value carefully!

 

[Sunny22g]

How we can help without measurements and clear pictures?
What you are using as input signal?
Is the level enough for full output?
Look at the resistors value carefully!

Sir I updated pictures many time.bias is22.i am using computer source for input. .Is just playing .I amusing 45 0 45 Ac transformer.dc off is 2 millivolts

 

[vzaichenko]

Greetings guys .My main problem is my sr200 is not go louder.i have 12 "woofer 8 ohm . 135mm magnet..Can any 1 tell me how to solved this .I am using ttc5200.or tta1943 is that problem.or small transistor problem

Sunny, for the beginning, you need to measure the AC voltage of the signal at the input of the amplifier, preferably with some True RMS voltmeter of DMM.
What AC value will you see?
Then we'll be able to help you.

 

[avtech]

Are you using the PP12 each time when testing?

You said you had a capacitor blow on the PP12? What voltage are you feeding it?

I see thermal paste on your PP12 transistors - have you isolated the heatsinks?

Are the transistors from a reputable source?

Have you tried to use a different preamp?

 

[Sunny22g]

Are you using the PP12 each time when testing?

You said you had a capacitor blow on the PP12? What voltage are you feeding it?

I see thermal paste on your PP12 transistors - have you isolated the heatsinks?

Are the transistors from a reputable source?

Have you tried to use a different preamp?

Greeting sir .1st I am giving 18 018 volt Ac 1 amp. Transformer.i use mica pad with transistor.all components buy good or genuine

 

[saminnografix]

Greeting sir .1st I am giving 18 018 volt Ac 1 amp. Transformer.i use mica pad with transistor.all components buy good or genuine

sorry mr. sunny22g
i cannot see any pictures and measurements of your work being uploaded. a simple good resolution picture will let others look at your work in terms of resistor VALUES, POLARITY of diodes, capacitors etc....

regards

 

[Sunny22g]

sorry mr. sunny22g
i cannot see any pictures and measurements of your work being uploaded. a simple good resolution picture will let others look at your work in terms of resistor VALUES, POLARITY of diodes, capacitors etc....

regards

I will send link or poet no


Studio Reference Amplifier

 

[avtech]

Are you using the PP12 each time when testing?

Have you tried to use a different preamp?

Have you measured your voltages and written them on the schematic? It's the only way anyone can help.

 

[Sunny22g]

Are you using the PP12 each time when testing?

Have you tried to use a different preamp?

Have you measured your voltages and written them on the schematic? It's the only way anyone can help.

Sir I connect pp12 with stk4141 they playing good but sr 200 lose of quality.when I play pp12 with stk I feel the bass and loudly ness.but with sr normal to down

 

[Sunny22g]

Sunny, for the beginning, you need to measure the AC voltage of the signal at the input of the amplifier, preferably with some True RMS voltmeter of DMM.
What AC value will you see?
Then we'll be able to help you.

Sir TRMS DMM is to expensive for me .I have only dmm .I know that I need but can't adorable for me . Because I am not belong rich family.is that any way to solve this 😢😢😢

 

[Sunny22g]

Guys can only DMM is not ok

 

[Sunny22g]

My WhatsApp no is 918427690033.

 

[avtech]

You have a DMM, that is enough to measure voltages around the circuit.

If you won't measure voltages and post the results, how can anyone help you?

 

[still4given]

Sunny, do you have a way to feed a 1k signal into the input? If so, measure the AC voltage at the input and then the AC voltage at the output and post it here.