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Old 1st September 2013, 11:45 PM   #11
Bones13 is offline Bones13  United States
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Thanks, it (the schematic) opened in a new window fine!
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Old 2nd September 2013, 12:14 PM   #12
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Hope I may add some suggestions here.

If the lead spacing of C1 allows for 27.5 mm (to me it seems to) you should consider
this film-foil type instead of the cheaper metallized poly, also available at Mouser:

Mouser 505-FKP41.0/400/10

For C6 & C7 you might consider these (same 5 mm lead spacing as Wima MKP):

Mouser 505-FKP2.022/100/5
Mouser 505-FKP20.033/63/2.5

Where a wider lead spacing is applicable FKP3 is an even better choice.

For C5 I need to say, that at least many using the PCBs of an earlier German group buy
had much better results with 10 pF - both audibly and measured. I have to admit this
might differ depending on the PCB design.
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Last edited by ticktock; 2nd September 2013 at 12:22 PM.
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Old 3rd September 2013, 08:22 PM   #13
6L6 is offline 6L6  United States
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Added chassis assembly section.
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Old 3rd September 2013, 08:26 PM   #14
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Jim.....as normal, your photography is outstanding, as are your assembly guides!
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Old 3rd September 2013, 08:28 PM   #15
6L6 is offline 6L6  United States
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Thanks, I appreciate it!
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Old 3rd September 2013, 09:05 PM   #16
1MOR is offline 1MOR  United States
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Thanks Jim, you make it look way toooooooooooo easy!
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Old 3rd September 2013, 10:09 PM   #17
henryve is offline henryve  South Africa
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I am still waiting for my boards and you guys are all having fun. My boards apparently left the US at Los Angeles on the 21st of August and I still don't have them. Damn, sometimes staying in dark corners of the world bites.

Must .. be .. patient.
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Old 4th September 2013, 02:11 AM   #18
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Quote:
Originally Posted by henryve View Post


I am still waiting for my boards and you guys are all having fun. My boards apparently left the US at Los Angeles on the 21st of August and I still don't have them. Damn, sometimes staying in dark corners of the world bites.

Must .. be .. patient.
they are wonderful youll lovethem.

side note: i got mine already nanana booboo!


couldnt help myself sorry.
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Old 4th September 2013, 11:13 AM   #19
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2 day delivery on the boards to Boston!
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Old 5th September 2013, 02:49 AM   #20
Bones13 is offline Bones13  United States
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Whetted my FirstWatt appetite with the ACA. Such good sound from the simple amp.

Pawing through my left over boxes yielded a quad of Silmic II 220 mF 100v caps. They look to fit well on the board. I also found 4 nice 1 uF film caps from a pair of speaker crossovers that were upgraded. They are about 1 inch long, 1/4 inch diameter. Will they be better or worse bypass caps with the longer leads that will be needed to hook it up? It would be silly to use them, and have them be markedly worse due to longer connections. Actually, I'll put those at C1, and stick with the Wima bypass caps.

Got my boards and 500u case. AnTek Transformer was shipped this week. JFets are here, output transistors from Buzzforb en route. Finish up my Mouser BOM, and I'll be cooking.
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