specialidiot
Break Glass, Smoke Lucky
I've had the parts together for this build for a couple of months and with a few audio related projects recently completed, its time to get to work on it.
The F5 is a Nelson Pass designed fully Class A using FET amplification and is purely direct coupled - the only caps in the box are in the power supply. It's a pretty straight forward build.
A full description by Mr Pass can be found at http://www.firstwatt.com/articles.htm
The article is summed up thusly:
The driver and power supply boards were purchased as part of a group buy on diyaudio.com and came from Denmark for $40 shipped. Torriod was sourced from Antek for about $50, electronic components are mostly from Mouser with a couple of stranglings found only on ebay.
I did my own mini group buy of the heat sinks sourced from Conrad in Austrailia. By financing the buy and selling most of them for a tidy profit on ebay, I was able to fund my pair.
The enclosure was a struggle for me, I looked all over for the right one and finally found it at diyenclosures.com. I got lucky and scored the last one prior to this particular model being discontinued. I received enough of a discount to purchase a nice gold anodized front panel too!
Over the last couple of days I've assembled the enclosure, drilled and tapped the heat sink, and cut out the sides so I can mount the FETs directly to the HS.
It is a simple enough build but I'm going to take my time with it. I should be able to finish it up in 6 - 10 hours of steady work.
Here's the enclosure assembled but I still need to drill mounting holes for the power supply PCB mount, the RCA jacks, binding posts, rectifiers, and torriod mounts.
I'm thinking of having the top panel powder coated in a black crinkle finish to match the heat sinks.
I'll add to this post as the build moves on.
The F5 is a Nelson Pass designed fully Class A using FET amplification and is purely direct coupled - the only caps in the box are in the power supply. It's a pretty straight forward build.
A full description by Mr Pass can be found at http://www.firstwatt.com/articles.htm
The article is summed up thusly:
Conclusion
So there we have it.
Nice little amplifier without too many parts.
It sounds great.
So there we have it.
Nice little amplifier without too many parts.
It sounds great.
The driver and power supply boards were purchased as part of a group buy on diyaudio.com and came from Denmark for $40 shipped. Torriod was sourced from Antek for about $50, electronic components are mostly from Mouser with a couple of stranglings found only on ebay.
I did my own mini group buy of the heat sinks sourced from Conrad in Austrailia. By financing the buy and selling most of them for a tidy profit on ebay, I was able to fund my pair.
The enclosure was a struggle for me, I looked all over for the right one and finally found it at diyenclosures.com. I got lucky and scored the last one prior to this particular model being discontinued. I received enough of a discount to purchase a nice gold anodized front panel too!
Over the last couple of days I've assembled the enclosure, drilled and tapped the heat sink, and cut out the sides so I can mount the FETs directly to the HS.
It is a simple enough build but I'm going to take my time with it. I should be able to finish it up in 6 - 10 hours of steady work.
Here's the enclosure assembled but I still need to drill mounting holes for the power supply PCB mount, the RCA jacks, binding posts, rectifiers, and torriod mounts.
I'm thinking of having the top panel powder coated in a black crinkle finish to match the heat sinks.
I'll add to this post as the build moves on.
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