Alpeh 5 pcb

MEGA-amp · 28th May 2004, 04:20 AM

I am helping my friend build an Aleph 5. I made some modifications to Brian Bell's Aleph PCB. I understand very little about making PCBs, but I figure that bigger traces must be better. However I read that to avoid crosstalk, the traces if they are close together should be curved. But since there is only one signal, would crosstalk be an issue? Here is the modded board (copper side).

MEGA-amp · 28th May 2004, 04:21 AM

Brian Bell's Aleph clone

Brian Donaldson · 28th May 2004, 05:55 AM

Fatter traces make your echant last longer.

MEGA-amp · 29th May 2004, 01:30 AM

Quote:

Fatter traces make your echant last longer.

Thats it? Will what I'm doing with my PCB improve performance?

regards

JH

Brian Donaldson · 29th May 2004, 02:54 AM

One thing I see as a potential problem is the ground making a loop around the board. Brian's layout isolates the input ground from the power. connecting both to star ground independantly will reduce chance of noise injection from resistance between speaker ground to star ground.
Beefing up traces that carry high currents is a good thing. I laid 12 ga solid stripped wire over mine. I believe in making small signal traces that carry almost no current as small as possible, But I doubt that you can hear the difference. I also believe in making things as compact as possible. Shorter traces have less lenght to pick up "stuff". (this also appeals to my sence of thrift)
Other than ground issue, looks good. His layout works great, and you've done very little to really change it.

azira · 29th May 2004, 05:21 AM

Quote:

Originally posted by Brian Donaldson
One thing I see as a potential problem is the ground making a loop around the board.

When you can't have a dedicated ground plane, a ground loop around the outside is a good rule of thumb for digital logic circuits. Then again, this is an analog circuit...
--
Danny

nickgreek · 29th May 2004, 04:57 PM

Hello guys
Here is my Aleph5 pcb

highbias · 29th May 2004, 07:40 PM

One thing that is bad are the sharp square corners. Rounded corners are also more structurally sound as well as less likely to pick up adhacent solder should that happen. But yes, I like the more copper aspect of it. Nicks board is an excellent design!!

Nick,
Could you please post your file on that so I could also use it??? Thanks!

Mark

nickgreek · 30th May 2004, 06:43 AM

Hi mark

I send you E-MAIL

niko

Jaac · 30th May 2004, 08:35 PM

hey there

i've also made me a aleph 5 print in ultiboard. i have made so that the power fets and power resistors are wired p2p.

gr Jaac

29th May 2004, 07:40 PM	#8
highbias diyAudio Member Join Date: May 2004 Location: Salt Lake City, Ut	One thing that is bad are the sharp square corners. Rounded corners are also more structurally sound as well as less likely to pick up adhacent solder should that happen. But yes, I like the more copper aspect of it. Nicks board is an excellent design!! Nick, Could you please post your file on that so I could also use it??? Thanks! Mark __________________ Now I too Have a Cool Screen Name!

Thread Tools	Search this Thread
Show Printable Version Email this Page	Search this Thread: Advanced Search

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Alpeh 30 age	Heiney9	Pass Labs	6	11th February 2009 08:44 PM
WTB: Alpeh X Rectifier PCB's (kit)	Sander	Swap Meet	0	20th September 2006 05:36 PM
Alpeh 5 PCBs	Lagroute	Pass Labs	7	6th September 2004 12:08 PM
First DIY-Alpeh Ono Prototype	TheMyxin	Pass Labs	18	19th October 2003 05:49 PM
A new Alpeh,	harvardian	Pass Labs	11	12th December 2002 11:35 AM

New To Site?	Need Help?
Register to Participate Search Privacy Statement Contact Us	Frequently Asked Questions Did you forget your password? Mark Forums Read


	Please consider donating to help us continue to serve you. Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving

28th May 2004, 05:55 AM	#3
Brian Donaldson diyAudio Member Join Date: Jan 2003 Location: Texas, Love it or leave it	Fatter traces make your echant last longer.

29th May 2004, 02:54 AM	#5
Brian Donaldson diyAudio Member Join Date: Jan 2003 Location: Texas, Love it or leave it	One thing I see as a potential problem is the ground making a loop around the board. Brian's layout isolates the input ground from the power. connecting both to star ground independantly will reduce chance of noise injection from resistance between speaker ground to star ground. Beefing up traces that carry high currents is a good thing. I laid 12 ga solid stripped wire over mine. I believe in making small signal traces that carry almost no current as small as possible, But I doubt that you can hear the difference. I also believe in making things as compact as possible. Shorter traces have less lenght to pick up "stuff". (this also appeals to my sence of thrift) Other than ground issue, looks good. His layout works great, and you've done very little to really change it.

30th May 2004, 06:43 AM	#9
nickgreek diyAudio Member Join Date: Jun 2002 Location: Germany	Hi mark I send you E-MAIL niko

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)