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Another nice build! (Read 2050 times)
Steve Deckert
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Another nice build!
07/15/09 at 17:37:43
 


Quote:
Steve,

Amp sounds great! Thank you very much for your helpful suggestions and diagnostic repair.  I also have a question about the Christmas upgrade/addition to my amplifier kit.  How would I go about ordering that and what is included in that?

Thanks,
Jerry



Jerry,

The CCE mod requires you to modify the circuit board by cutting the trace between pins 3 and pins 6.  Then you can install a 0.1uf 400 volt poly cap between the two pins.  

Steve
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Alan H
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Re: Another nice build!
Reply #1 - 07/15/09 at 23:26:48
 
Hmmm - I installed the Christmas mod capacitors, but didn't cut any traces. Pins 3 and 6 do not look connected on the schematic, nor on the graphic of the board in the assembly instructions. (I presumed that the NC beside pin 6 meant not connected).

Steve, is it the traces between pins 3 and 8 which need to be cut?
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Steve Deckert
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If the 1st watt
sucks why continue?

Posts: 2425
Re: Another nice build!
Reply #2 - 07/16/09 at 13:21:24
 
Some of the early boards did not have 3 and 6 connected, the later ones did.
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Alan H
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Re: Another nice build!
Reply #3 - 07/16/09 at 17:01:51
 
Ta. I must have an early board - looking at my photographs, no traces on either side attached to pin 6.

Any other differences with the early boards?

NB I was wrong - it is a later board, and pins 3 and 6 are connected beneath the tube holders.
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« Last Edit: 07/17/09 at 12:36:06 by Alan H »  

FLAC via Ethernet-over-Mains
Squeezebox 3
Valab 6N Solid Silver Coax
GD-Audio DAC19 DSP
Decware SE84DIY (V-Caps + CCE mod)
Solid silver / teflon cables
Scotmoose Sachiko FE206En Horns
WWW   IP Logged
Steve Deckert
Administrator
*****


If the 1st watt
sucks why continue?

Posts: 2425
Re: Another nice build!
Reply #4 - 07/16/09 at 23:49:05
 
The early boards had a full shield that proved to be have a greater potential to cause noise problems than it did to prevent noise problems so it has been eliminated from the current production.

Steve
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Alan H
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Re: Another nice build!
Reply #5 - 07/17/09 at 00:41:46
 
EDITED

Steve - turns out I have a later board (rev 7 2009). Now I know where I stand. Thanks.
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« Last Edit: 07/17/09 at 10:37:32 by Alan H »  

FLAC via Ethernet-over-Mains
Squeezebox 3
Valab 6N Solid Silver Coax
GD-Audio DAC19 DSP
Decware SE84DIY (V-Caps + CCE mod)
Solid silver / teflon cables
Scotmoose Sachiko FE206En Horns
WWW   IP Logged
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