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Old 4th February 2013, 02:36 AM   #471
buzzforb is offline buzzforb  United States
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I may offer those options in the next go round.
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Old 4th February 2013, 03:38 AM   #472
KMossman is offline KMossman  China
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Quote:
Originally Posted by buzzforb View Post
I may offer those options in the next go round.

I was offering to do so.............if you have no objection.
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Old 11th February 2013, 10:11 PM   #473
bugzbunny is offline bugzbunny  United States
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Any approx dates on when the kits will start shipping out? No hurry since the transformers from Primrose won't be coming for a while, but just curious...
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Old 11th February 2013, 10:13 PM   #474
buzzforb is offline buzzforb  United States
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I expect the Fukushima in at the end of feb to beginning of march, so about a week after that.
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Old 14th February 2013, 03:03 AM   #475
bugzbunny is offline bugzbunny  United States
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Hi Buzzforb,

For the build, do we follow http://www.fetaudio.com/wp-content/u...ruction-v3.pdf
Or are there alternate instructions?
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Old 14th February 2013, 03:29 AM   #476
6L6 is offline 6L6  United States
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F5T Premium kit GB
The DIYaudio build guide for the F5T will be in a "In-Progress" thread shortly. This build will be using the DIYaudio PCB, with a PSU very close to what is shown in Nelson's article.

However -
In the grand scheme of things the Turbo is just a normal F5 with a few extra pieces. It really is. The front end is basically identical, the output stage is just parallel, with parallel resistors, and the additional diodes. It's honestly not that different.

The Cascode front-end merely sits on top of the standard input stage.

The PSU drawn for the Turbo uses the single bridge only to use the same MUR3020W diodes as in the amp circuit. A PSU made in the style of the original F5 (with the dual bridges) would only need additional capacitance and a few more resistors.

Look at the schematic of the original F5 -- You will see that circuit (minus the limiter) in all the versions of the Turbo.

If you can get your head around building an F5, building a Turbo will seem merely, bigger.
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Old 15th February 2013, 01:21 PM   #477
sts9fan is offline sts9fan  United States
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One day those boards will be available!! It's a race between them and Fukuwhatevers.
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Old 15th February 2013, 01:41 PM   #478
buzzforb is offline buzzforb  United States
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Second or third week of march is VERY safe ship date on the kits. As for build guide, 6L6 will do a phenominal job. My one suggestion is to power the amp up in sections, checking pus first, then pluggin in Fe and surrounding apparatus, and then attaching output fets. This saves the risk of burnt outputs. Of course all this can be safely dealt with a lamp inbetween wall outlet and PSU.
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Old 17th February 2013, 06:09 PM   #479
dimkasta is offline dimkasta  Greece
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Buzz a small irrelevant question.

What make were the white 1R resistors on the first GB? Were they Mills?
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Old 17th February 2013, 07:25 PM   #480
buzzforb is offline buzzforb  United States
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Fukushima MPC74. I have some extra if you need them.
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