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Old 23rd May 2013, 03:33 PM   #2131
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Originally Posted by buzzforb View Post
There is no doubt that their turn on is related to both heat and voltage. That being said, having them on the sink may offer more temp stability than having individual sinks. An ideal scenario might be to have them off the main sink, but tied together with a copper bar. That way, they will at least be some thermal similarity between them.
the last one may be the best way. or the first one. depending on voltage drop across source resistors. the copperbar with source resistors/bias matched to the cooling from the copperbar may be the best one
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Old 23rd May 2013, 10:36 PM   #2132
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Received my boards today, hear me knocking buzzforb ?
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Old 13th June 2013, 11:40 PM   #2133
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6L6 has mentioned he is writing a build guide for f5 turbo v2...so does this mean that the diy audio f5t boards are ok?
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Old 14th June 2013, 03:37 PM   #2134
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Originally Posted by Smittys View Post
6L6 has mentioned he is writing a build guide for f5 turbo v2...so does this mean that the diy audio f5t boards are ok?
Building an F5 Turbo v2 (in-Progress)

I havn't started my own build yet, but I think it's safe to say that the store don't have any major issues.

I suggest you read the build-thread and judge by yourself.
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Old 14th June 2013, 03:44 PM   #2135
6L6 is online now 6L6  United States
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My DIY time has been very scarse lately, but the F5T wil be completed.

Use the compensation caps and have at it. The biggest 'problem' with the store boards is a lack of solderpads for certain connections, but the boards themselves are good.
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Old 16th June 2013, 01:02 PM   #2136
Rixsta is offline Rixsta  United Kingdom
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currently Rewiring due to Ground loop, with 60hrtz sounding hum.
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Old 16th June 2013, 01:29 PM   #2137
AndrewT is offline AndrewT  Scotland
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Have you relocated outside Europe?
60Hz?
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Old 16th June 2013, 06:43 PM   #2138
Rixsta is offline Rixsta  United Kingdom
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haha no, basically seen 60hrtz thrown about around here and presumed, I see its a bit different in the Uk
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Old 18th June 2013, 01:42 PM   #2139
BigE is offline BigE  Canada
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Originally Posted by 6L6 View Post
The biggest 'problem' with the store boards is a lack of solderpads for certain connections, but the boards themselves are good.
Could you please elaborate on what is missing?
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Old 18th June 2013, 02:18 PM   #2140
6L6 is online now 6L6  United States
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The solderpads for a few connections have only one hole - they were obviously made for one of those connectors that solders to the board and has screw terminals. ( I don't know the official name ) This is not a bad thing, and if anybody could figure out a part number for the connector, things would be easier...

Anyway, there are at least 2 connections on the center board (speaker output and GND) that have need of multiple wires but don't have enough holes... So it will be required to buss them somehow or get really creative on making multiple connections on one hole.

That said, the PCB are really quite nice, and only minor changes will need to be made to address this issue in the next revision.
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