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50 Free SYMEF PCBs
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Old 15th January 2013, 11:37 PM   #51
OnAudio is offline OnAudio
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Join Date: Oct 2011
Keep a look out for free OPB PCBs
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Old 16th January 2013, 09:55 AM   #52
AudioSan is offline AudioSan  Norway
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Quote:
Originally Posted by AudioSan View Post
i'll take 2.
payment sent
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Old 16th January 2013, 06:34 PM   #53
OnAudio is offline OnAudio
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Rich, Arm, Paul, Walt, Iva your puppies are on their way enjoy
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Old 16th January 2013, 06:40 PM   #54
OnAudio is offline OnAudio
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Hi guys for now PCBs are all out other than my private collection please don't pay-pal . OPB will be next
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Old 17th January 2013, 03:40 AM   #55
fredlock is offline fredlock  United States
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Nothing left for me? Well, maybe theres another batch but maybe not. Thats fine, not a big deal.
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Old 17th January 2013, 05:06 PM   #56
bambadoo is offline bambadoo  Norway
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Location: West Coast of Norway
One question..
Are we talking type1 or type2?

Notice that C1 (100u) has become C8 (220u) in type2. According to schematics at http://harrisonaudiolabs.com/Amplifiers/amplifiers.htm
C8 is not in the BOM btw.

Sincerely

Last edited by bambadoo; 17th January 2013 at 05:17 PM.
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Old 17th January 2013, 05:32 PM   #57
OnAudio is offline OnAudio
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Join Date: Oct 2011
Quote:
Originally Posted by bambadoo View Post
One question..
Are we talking type1 or type2?

Notice that C1 (100u) has become C8 (220u) in type2. According to schematics at HAL: Amplifiers
C8 is not in the BOM btw.

Sincerely
Type 2
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Old 17th January 2013, 05:37 PM   #58
bambadoo is offline bambadoo  Norway
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Join Date: Feb 2003
Location: West Coast of Norway
Thanks..
Sorry - something is wrong when importing your .xls BOM into google drive and that internal spreadsheet.... Som hickups here regarding parts..
Collecting both for Symef type2 and 1diffqc
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Old 17th January 2013, 05:41 PM   #59
metal is offline metal
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I am wondering how the output transistors will be mounted on the heatsink for this PCB.
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Old 17th January 2013, 05:43 PM   #60
OnAudio is offline OnAudio
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Quote:
Originally Posted by metal View Post
I am wondering how the output transistors will be mounted on the heatsink for this PCB.
TYPE 2

1. Place unpopulated PCB on heat-sink.
2. Use ink to mark the lead positions on the heat-sink.
3. Place transistors on heat sink with the pins bent straight up
4. Align the transistors leads with the ink marks
5. Use ink to mark the mounting holes of each transistor
6. Drill mounting holes
7. Mount transistors
8. Populate PCB
9. Place PCB over transistors
10. solder the transistors
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