Studio Reference Amplifier

Jump to Latest
andrewlebon

andrewlebon

R.I.P.
Joined 2008
FR100

Hello
greetings FR100 completed many thanks to apex audio kuntaraman for
his well designed pcb layout and terry for the pdf files a very nice sounding
amplifiers for diyers to build

warm regards
Andrew;)
 

Attachments

  • 14193788_604794036348702_1198218321_n.jpg
    14193788_604794036348702_1198218321_n.jpg
    33.5 KB · Views: 1,420
C

cuongdotvn

Member
Joined 2015
Last edited:
apexaudio

apexaudio

Member
Joined 2010
still4given said:
I like this one better. It is dead quiet and no turn-on thump. No hot transistors. Sound as good. It reminds me more of the FX100 than anything else. If you uild it make sure you have plenty 1N4148's. It used 10 per channel. ;)
Click to expand...

You can use this DC protect (crowbar). With this circuit instead diac it will be activated with DC over +/-10V. Diac need +/-32V and that is to high for amps with rails under +/-40V.
 

Attachments

  • APEX Crowbar.jpg
    APEX Crowbar.jpg
    87.9 KB · Views: 3,968
xrk971

xrk971

Founder of XSA-Labs
Joined 2012
etsy.com/shop/XRKAudio
Paid Member
apexaudio said:
You can use this DC protect (crowbar). With this circuit instead diac it will be activated with DC over +/-10V. Diac need +/-32V and that is to high for amps with rails under +/-40V.
Click to expand...

That's very clever circuit - am I correct in understanding that this is a self-powered circuit that can be added across speaker terminals to clamp it in case it detects DC >10v?
 
R

rsavas

Member
Joined 2012
Ok, maybe someone can check them before you send them off.
Click to expand...

Terry,

I do not see any show stoppers with the layout. I did not go over each connection against the schematic. That is what a full layout s/w package is supposed to do for you :). Same goes for DRC spacing rules.
have some text on the left intersecting a trace. "pcb by ..."
Put silk for polarity outside of comp body(silk) so you can identify/check after comp is inserted!
I do see that some traces have what would be considered pad exit violation, but that is nit picking.
Hope it works out for you.
 
vargasmongo3435

vargasmongo3435

Member
Joined 2011
Hello guys here is the Sprint file of the Apex FR100 it came out too big but maybe some one would like to edit this one is fine please check for bugs if you guys can, I attached the schematic from the simulation so all components are identified from the schematic generated by the simulation software :) multisim 14 also multisim 14 file too :p and yes all zip files

PCB size is 118 mm x 119 mm

Best Regards
Juan
 

Attachments

  • Apex FR100 CoquiAudio.JPG
    Apex FR100 CoquiAudio.JPG
    351.8 KB · Views: 1,301
  • Apex FR100.pdf
    365 KB · Views: 360
  • Apex FR100.zip
    135.3 KB · Views: 305
  • simulation.zip
    448.1 KB · Views: 229
Last edited:
apexaudio

apexaudio

Member
Joined 2010
vargasmongo3435 said:
Hello guys here is the Sprint file of the Apex FR100 it came out too big but maybe some one would like to edit this one is fine please check for bugs if you guys can, I attached the schematic from the simulation so all components are identified from the schematic generated by the simulation software :) multisim 14 also multisim 14 file too :p and yes all zip files

PCB size is 118 mm x 119 mm

Best Regards
Juan
Click to expand...

There is nice tested pcb for FR100 (post #2120) you can try pcb for FR50.
Regards
 
C

cuongdotvn

Member
Joined 2015
Transistor for SR200 amp???

cuongdotvn said:
What type should I use for power circuits SR200 amp? :confused:
Thanks!!!
http://www.upsieutoc.com/images/2016/09/06/Screenshot173892a3.png
http://www.upsieutoc.com/images/2016/09/06/Screenshot174c545a.png
http://www.upsieutoc.com/images/2016/09/06/Screenshot175b6102.png
http://www.upsieutoc.com/images/2016/09/06/Screenshot1769505f.png
http://www.upsieutoc.com/images/2016/09/06/Screenshot177e984c.png
Click to expand...
Dear all guy,
Please give me advice!!! :eek:
Thanks!!!
 
You must log in or register to reply here.
Top Bottom