pcb layout for "project 68"

skogs · 7th November 2006, 08:20 PM

hi,
does anyone have the pcb layout for this 300w amp?:
http://sound.westhost.com/project68.htm

would be very helpful

skogs · 7th November 2006, 09:03 PM

where can i buy this transistor?: mjl 4281A
or is there any transistors that is similar to this one?

thanks

pinkmouse · 7th November 2006, 09:48 PM

If you can't design your own, you would be better off buying Rod's PCB. With high power amps, layout is critical. It can take three or four versions of a PCB to get it right, and so will cost more in the long term. Anyway, Rod needs all the financial support he can get to keep his site running, and for providing that resource, he deserves our respect.

DieterDol · 8th November 2006, 12:55 PM

I agree, support Rod, he produces fantastic PCB's, and offers assistance as well if you buy from him, I did.

jaycee · 8th November 2006, 01:37 PM

You can use MJL21193/21194 if you want, or MJL3281/1302.

The PCB layout is Rod's proprietary work, if you want it you'll have to buy a PCB!

PierreG · 8th November 2006, 01:43 PM

Quote:

Originally posted by skogs
where can i buy this transistor?: mjl 4281A
or is there any transistors that is similar to this one?

thanks

www.onsemi.com

7th November 2006, 08:20 PM	#1
skogs diyAudio Member Join Date: Oct 2006	pcb layout for "project 68" hi, does anyone have the pcb layout for this 300w amp?: http://sound.westhost.com/project68.htm would be very helpful

7th November 2006, 09:03 PM	#2
skogs diyAudio Member Join Date: Oct 2006	mjl 4281A where can i buy this transistor?: mjl 4281A or is there any transistors that is similar to this one? thanks

7th November 2006, 09:48 PM	#3
pinkmouse diyAudio Moderator Join Date: Apr 2002 Location: Chatham, England	If you can't design your own, you would be better off buying Rod's PCB. With high power amps, layout is critical. It can take three or four versions of a PCB to get it right, and so will cost more in the long term. Anyway, Rod needs all the financial support he can get to keep his site running, and for providing that resource, he deserves our respect. __________________ Al I conceive of nothing, in religion, science or philosophy, that is more than the proper thing to wear, for a while. Charles Fort

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8th November 2006, 12:55 PM	#4
DieterDol diyAudio Member Join Date: Jul 2006	I agree, support Rod, he produces fantastic PCB's, and offers assistance as well if you buy from him, I did.

8th November 2006, 01:37 PM	#5
jaycee diyAudio Member Join Date: Apr 2004 Location: Norwich, UK	You can use MJL21193/21194 if you want, or MJL3281/1302. The PCB layout is Rod's proprietary work, if you want it you'll have to buy a PCB!

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