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BPA300 Round 2
BPA300 Round 2
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Old 2nd December 2012, 06:34 PM   #1221
Lo_Tse is offline Lo_Tse  Canada
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Join Date: Dec 2006
Quote:
Originally Posted by marlowson View Post
Ladies and Gentlemen

Let me put all the informations in one and a right place (group buys).

Basing on alexw88's (shine7.com) experience, I've created my own project of PA150 (3xLM3886). It has been modified a bit, the size has been reduced, and some other tweaks have been made. I'd like to share the project with you (below). PDF file with switchable layers, try it! I'm gonna order the PCB soon, if anyone wants to grab a couple of PA150 PCB, let me know. Of course, tweaks still can be done before the order.

PCB layout:
http://airproject.drl.pl/PA150v18.pdf

Power supply up to +35/-35 VDC. LM3886 datasheet.
Details: PA150 - 3x LM3886 PCB assembly guide
PA150 - 3x LM3886 PCB assembly guide

I has been well tested by alex88. Testing and measurement:
DIY BPA300 6x LM3886 300W audio Amplifier

It is still the same project, except the capacitors which were moved from the bottom to the top, C10 (10u) replaced with wima (better solution), and some downsizing.

Anyone who is interested, just give me your e-mail address and I will send you some details.

Of course don't hesitate to ask questions
Hi, Marlowson

I am interested in the possible PCB deals on the BPA150 (originally by alex88). Does this board use smd or thru hole components? Also, what would be the estimated price per PCB? I am thinking of using a transformer to separate the + and - signals instead of the DR134 (I think) in order to bridge the two boards. Thanks!

Regards,

Lo_tse
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Old 2nd December 2012, 06:44 PM   #1222
marlowson is offline marlowson  Poland
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Join Date: Dec 2011
Location: Warsaw
In the field of components - no changes. Both smd and thru hole as in former alex88's project.
Price 8 euro apiece if you're buying 4 pieces.
9 euro if buying 2 pieces.
+ delivery man
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Old 3rd December 2012, 02:01 AM   #1223
Lo_Tse is offline Lo_Tse  Canada
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Join Date: Dec 2006
Quote:
Originally Posted by marlowson View Post
In the field of components - no changes. Both smd and thru hole as in former alex88's project.
Price 8 euro apiece if you're buying 4 pieces.
9 euro if buying 2 pieces.
+ delivery man
Marlowson,

Thanks for the info! Hmm, I recall that there were quite a few smd components on the board. I am not that proficient with soldering smd - my right eye sight is not great. Anyway, a little off-topic, is there a BOM for the BPA150 archived somewhere. I would like to check to see how many smd's that I have to tackle with.

Thanks!

Reagards,
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Old 3rd December 2012, 11:35 AM   #1224
tryonziess is offline tryonziess  United States
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Join Date: Apr 2007
Go to the shine7.com website where alexw88 has almost all of the original information available for the bpa300 build. He originally set out to clone the Jeff Rowland amp and did a fabulous job.

Tad
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Old 4th December 2012, 12:57 AM   #1225
Lo_Tse is offline Lo_Tse  Canada
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Join Date: Dec 2006
Quote:
Originally Posted by tryonziess View Post
Go to the shine7.com website where alexw88 has almost all of the original information available for the bpa300 build. He originally set out to clone the Jeff Rowland amp and did a fabulous job.

Tad
Thanks!

Regards,
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Old 11th February 2013, 11:16 PM   #1226
Fcrawley is offline Fcrawley  United States
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Join Date: Mar 2006
Location: Georgia USA
Anyone in America got pa-150 circuit boards for sale?
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Old 12th February 2013, 07:58 AM   #1227
marlowson is offline marlowson  Poland
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Join Date: Dec 2011
Location: Warsaw
I've got some PA150 pcbs left from the last group buy. Anyone who's interested pm me.
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Old 12th February 2013, 03:10 PM   #1228
mrsavage is offline mrsavage  United States
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Join Date: Nov 2011
Location: Columbus, Ohio
BPA300 Round 2
Default Purchase 6 of these PA150 circuit boards

If you have 6 PA150 boards then I want them. Please let me know
what I owe you and how much. Take care.
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Old 12th February 2013, 03:12 PM   #1229
mrsavage is offline mrsavage  United States
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Location: Columbus, Ohio
BPA300 Round 2
Default 6 BPA300 boards as well

I mean 6 BPA300 boards but if you have the 150 boards as well I will
take 6 of these as well. Take care.
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Old 12th February 2013, 06:09 PM   #1230
bcmbob is offline bcmbob  United States
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Join Date: Dec 2009
Location: Bay City, Michigan
BPA300 Round 2
If I'm not being nosy - what are you making, could be interesting. Do I hear HT system?
__________________
Bob M.
"Arrange Whatever Pieces Come Your Way."
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