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Old 9th August 2009, 04:23 PM   #921
huy5005 is offline huy5005  Canada
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Hi:

I look at the Wiki for BPA300 round 2. I am wondering when the "Not shipped" list is gonna be processed? I know that things are moving... I just need some update please!.
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Old 9th August 2009, 05:25 PM   #922
Electrons are yellow and more is better!
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I'll hope that I will get parts from Rhys late next week.
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Old 9th August 2009, 05:28 PM   #923
adamus is offline adamus  United Kingdom
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a please or thankyou wouldnt go a miss, PA is going WAY out of his way to do this.
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Old 9th August 2009, 05:48 PM   #924
shmulik is offline shmulik  Israel
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juluska,

I find the stereo configuration less appealing since it is less flexible than the dual mono option. though I'm going to place both channels in the same box (and have a master ground for all) the supplys for both brigde adapters and BPAs are separate per channel.
I also believe that once more people will have their stuff you'll find more people interested and more skilled brains stating an opinion and suggesting improvements.

shmulik
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Old 9th August 2009, 06:12 PM   #925
juluska is offline juluska  Ukraine
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Quote:
Originally posted by shmulik
juluska,

I find the stereo configuration less appealing since it is less flexible than the dual mono option. though I'm going to place both channels in the same box (and have a master ground for all) the supplys for both brigde adapters and BPAs are separate per channel.
I also believe that once more people will have their stuff you'll find more people interested and more skilled brains stating an opinion and suggesting improvements.

shmulik
yes, but i'm desperate, i can't wait, this project is so long... Next week i will test this bridge adapter with smds and with the 4 PA150 boards.
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Old 9th August 2009, 06:21 PM   #926
juluska is offline juluska  Ukraine
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Default bridge adapter

This is the schematic i'm going to test, i'm open to any suggestions.
Thanks
Attached Images
File Type: jpg final.jpg (58.6 KB, 316 views)
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Old 9th August 2009, 06:32 PM   #927
AndrewT is offline AndrewT  Scotland
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the 220p across the 1k0 is not required.
Where is the input filtering? 4.7uF and 50k (235ms) is only half of it.
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Old 9th August 2009, 06:38 PM   #928
juluska is offline juluska  Ukraine
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Quote:
Originally posted by AndrewT
the 220p across the 1k0 is not required.
Where is the input filtering? 4.7uF and 50k (235ms) is only half of it.

is not enough 4,7uf cap?
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Old 9th August 2009, 06:56 PM   #929
juluska is offline juluska  Ukraine
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true, i need 15uf
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Old 9th August 2009, 07:11 PM   #930
AndrewT is offline AndrewT  Scotland
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4u7F is plenty for very low bass with Rin=50k. F-1dB~1.4Hz
This will allow the power amp to be filtered @ F-1dB >=2.8Hz

You are missing the low pass filtering.
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