Viki, I've tidied up and moved your discussion on crossovers to your other thread. Please don't post here on the subject again.
Thank You.
Tanks a lot for kind words , I'm glade to help you Apexaudio and viki_v2 . I have modified , an old PCB to fit Sanken output transistors .and PSU
Regards Alex .
Hello Alex,
Can i get pcb lay out for etching board.
Thank You.
What have those Sankens of different from T0-247 regarding PCB? I thought you just needed to set them more apart becase they are broader. Am I wrong?.... PCB view from solder side for Sanken output transistors
Alex.
.... PCB view from solder side for Sanken output transistors
Alex.
Thank You, Alex
With DMM only measurements of DC offset and bias is posible, do you have a scope?
In thread http://www.diyaudio.com/forums/analog-line-level/167363-mic-line-eq-preamps-26.html post #259 you can find preamp pcb design by 'QQ12e5k1'
SR200 Completed.....
Hello Sir Apex,
I have just completed my first channel of your SR200 design. I must admit, this is one good amplifier.....the sound is one of the best that I have heard in a long time. Bass is good, mids and high very clear. I connected input straight from CD player, no preamp, and I must say, this is one excellent amp. Here is some pictures of my first channel. Planning to build second channel today.
Thank you Alexx mm for a wonderful PCB design. It is easy to build and work first time. Thank you very much. Just one small request, as you can see from my pictures I only have two power transistors populated. I cannot fit a third one in this PCB. Space is a bit to small for 3 outputs. Can you modify this PCB by increasing the spacing between the power transistors, as I would like to populate 3 power transistors.
One Question Sir Apex. What is the maximum voltage for 2 power transistors in output?
Once again, thank you very much Apex and Alex mm for a wonderful design.
Regards
MACD
Hello Sir Apex,
I have just completed my first channel of your SR200 design. I must admit, this is one good amplifier.....the sound is one of the best that I have heard in a long time. Bass is good, mids and high very clear. I connected input straight from CD player, no preamp, and I must say, this is one excellent amp. Here is some pictures of my first channel. Planning to build second channel today.
Thank you Alexx mm for a wonderful PCB design. It is easy to build and work first time. Thank you very much.
Just one small request, as you can see from my pictures I only have two power transistors populated. I cannot fit a third one in this PCB. Space is a bit to small for 3 outputs. Can you modify this PCB by increasing the spacing between the power transistors, as I would like to populate 3 power transistors. One Question Sir Apex. What is the maximum voltage for 2 power transistors in output?
Once again, thank you very much Apex and Alex mm for a wonderful design.
Regards
MACD
Attachments
Hello Sir Apex,
I have just completed my first channel of your SR200 design. I must admit, this is one good amplifier.....the sound is one of the best that I have heard in a long time. Bass is good, mids and high very clear. I connected input straight from CD player, no preamp, and I must say, this is one excellent amp. Here is some pictures of my first channel. Planning to build second channel today.
Thank you Alexx mm for a wonderful PCB design. It is easy to build and work first time. Thank you very much.
One Question Sir Apex. What is the maximum voltage for 2 power transistors in output?
Once again, thank you very much Apex and Alex mm for a wonderful design.
Regards
MACD
Hello,
Nice to see another SR200 Completed, We share same feelings about the sound.
Regarding pcb I too faced the same problem, So I increased the print size by 3.5 mm on all the four sides. this will allow three transistors to be mounted easily.
Happy diy.
RE Print Size
Hello Viki_V2
How did you do this? If you increase the print size, thus the other components still fit? what about the IC pins, are they still ok?
Regards,
MACD
Hello Viki_V2
How did you do this? If you increase the print size, thus the other components still fit? what about the IC pins, are they still ok?
Regards,
MACD