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Old 22nd December 2009, 08:02 PM   #1
rdf is offline rdf  Canada
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Default Sonic Frontiers SFP-1 mods?

I'm thinking about doing the standard parts refresh on mine, electrolytic capacitors are incomparably better than those available when this unit was released. Has anyone here worked on one? I see the Partconnexion upgrades lean heavily towards Rikkens, not really my taste.
Anything else I should look at while it's apart? Any idea about the general circuit topology?
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Old 22nd December 2009, 08:41 PM   #2
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Here's an audiogon link which may (or may not) be of interest.

AudiogoN Forums: Sonic Frontiers SFP-1 Upgrades

I have an Anthem Pre-1 and have wondered about upgrading/refreshing it also....
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Old 22nd December 2009, 09:12 PM   #3
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Another link with spec differences between the base model and signature model;

SFP 1
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Old 22nd December 2009, 10:24 PM   #4
rdf is offline rdf  Canada
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Thanks boywonder. Saw that one, also ran across the attached internal shots (Asylum trader) of a modified unit for sale. Specifics about topology are nowhere to be found though.

Note the damping on the PS divider/shield. Thing rings like a bell.
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File Type: jpg SFP-1_06.jpg (89.6 KB, 191 views)
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Old 22nd December 2009, 10:42 PM   #5
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Quote:
Originally Posted by rdf View Post
electrolytic capacitors are incomparably better than those available when this unit was released.
Looking at the posted modded unit, I don't actually see any electrolytic caps I'd call Chris at PartsConnexion -- He'll probably give tell you what's going on.

-d
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Old 23rd December 2009, 04:52 PM   #6
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Quote:
Originally Posted by rdf View Post
also ran across the attached internal shots (Asylum trader) of a modified unit for sale. Specifics about topology are nowhere to be found though.
Looks like it's up to you to figure out what's going on in there. One worthwhile upgrade may be to change out the 12AT7's for 6922's, like the slightly newer SF phono 1.

Jeff
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Old 24th December 2009, 06:36 AM   #7
rdf is offline rdf  Canada
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Looks like the hoped-for strawberry shortcut is not to be. Hand tracing the circuit seems the route. My particular unit has a sub-zero serial number, I believe it's the first off the line. The back panel isn't even screened.
Thanks all.
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