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Golden Ratio Fonken Build

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sts9fan

Golden Ratio Fonken Build
« on: 6 Jun 2011, 04:28 pm »
Yesterday I started cutting wood for a pair of Planet 10 HiFi "Classic Golden Ratio Fonken" for the Fe127e.  I chose the project for three reasons. First its square and I still need more practice before I tackle fancy boxes, second I have a pair of the drivers and third I trust Dave on the single driver topic.  I just started so no pictures yet.
http://homepage.mac.com/tlinespeakers/FAL/box-plans/ClassicFonkenGR-map.pdf
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Lyndon

Re: Golden Ratio Fonken Build
« Reply #1 on: 6 Jun 2011, 04:38 pm »
sts9fan,
Keep me informed!  I was very interested in building this model, and to a lesser degree, the Metronome from the Burning Amp festival, if I was going to try a flea amp single driver system.
http://web.mac.com/scress1958/iWeb/Steves_Tube_Trials/Metronome-Speaker.html

Lyndon
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neobop

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Re: Golden Ratio Fonken Build
« Reply #2 on: 11 Jun 2011, 07:45 am »
Quote from: sts9fan on  6 Jun 2011, 04:28 pm
Yesterday I started cutting wood for a pair of Planet 10 HiFi "Classic Golden Ratio Fonken" for the Fe127e.  I chose the project for three reasons. First its square and I still need more practice before I tackle fancy boxes, second I have a pair of the drivers and third I trust Dave on the single driver topic.  I just started so no pictures yet.
http://homepage.mac.com/tlinespeakers/FAL/box-plans/ClassicFonkenGR-map.pdf

Are you making the brace as shown in the design? This looks critical to get the performance out of the box. The side wall is less than 6" internal?

Slot loading is a good idea for something like this imo. As ugly as the box looks on paper, I bet it sounds killer. I assume this is a tested design and I would make the brace exactly as shown.
neo
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planet10

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Re: Golden Ratio Fonken Build
« Reply #3 on: 11 Jun 2011, 05:15 pm »
It is tested. Quite a few have been built. The brace, and proper fitting of it, are crucial to getting maximum downward dynamic range. A not commonly known trick to get a subtle improvement is adding an extra layer of material to the sides or a cleat block on the inside so that a larger champher or round over can be put on the vertical edges.

dave
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sts9fan

Re: Golden Ratio Fonken Build
« Reply #4 on: 14 Jun 2011, 03:22 pm »
Call me strange but I like big square speakers.
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chrisby

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Re: Golden Ratio Fonken Build
« Reply #5 on: 14 Jun 2011, 07:23 pm »
Quote from: sts9fan on 14 Jun 2011, 03:22 pm
Call me strange but I like big square speakers.


OK, you're strange - where's this goin?  :thumb:

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sts9fan

Re: Golden Ratio Fonken Build
« Reply #6 on: 15 Jun 2011, 10:30 pm »
And yes, I plan to follow the design. 
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sts9fan

Re: Golden Ratio Fonken Build
« Reply #7 on: 12 Sep 2011, 03:18 pm »
These will be finished today. Pics to follow.
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sts9fan

Re: Golden Ratio Fonken Build
« Reply #8 on: 17 Sep 2011, 04:18 pm »
Here are a few pictures of the build.  The finished pictures suck.  I did the baffle with a black stain with a uneven application and sanded it for a distressed look.  I then applied spray laquer.  The main body is truck bed liner. 



























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Mikeinsacramento

Re: Golden Ratio Fonken Build
« Reply #9 on: 20 Sep 2011, 03:47 am »
I like the way they look!  Wish I could hear them.
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chrisby

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Re: Golden Ratio Fonken Build
« Reply #10 on: 20 Sep 2011, 06:43 pm »
listening impressions to share yet?
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