Classic Golden Ratio dFonken125

Classic Golden Ratio dFonken125
09-june-2012
Planet10-hifi CGR versions of the dFonken125 miniOnken
enclosure for the Fostex FF125wk 4 1/2” (120mm) drivers.
3 orientations shown. CGR = Classic Golden Ratio are
rectangular variations of approximately 0.681:1:1.618
aspect ratio
Free for non-commercial use. Complete planset of
dFonken125 enclosures available for a subscription fee.
* miniOnken nomenclature is explained here: http://www.diyaudio.com/forums/planet-10-hifi/160747-minionken-nomenclature-what-those-names.html
© 2007-2012 planet10-hifi
Free for non-commercial use, commercial licencing available

driver offset based on the golden ratio, it is OK to put the
driver where you would like on the baffle constrained by
keeping the holey brace laterally within the space
defined by the vent spacer. The holey driver brace needs
to remain on the centre of the magnet (or one edge on
the centre). Do not place the holey brace such that it
bisects the back or baffle.
142
[5 1 2]
142
[5 1 2]
172
[7]
46
[2]
84
[3 5 16]
125
[4 15 16]
Ø 40
[Ø 1 1 2]
130
[5]
183
[7]
307
[12 3 32]
367
[14 7 16]
337
[13 9 32]
15
[ 1 2]
Ø 60
[Ø 2 1 2]
Notes:
0/ A classic Golden Ratio based derivative of the dFonken125 designed for
modified Fostex FF125wk will work well with stock driver
1/ All panels 15mm
2/ brace shape is only suggestive -- prime purpose is to brace driver, it needs to
be about 35-40% holes. (ie if you have to mount a terminal cup in the middle,
you’ll want to make sure the brace allows clearance), It is intentionally just off
centre.
3/ Don’t forget to angle cut the back of the driver cut-out to give it breathing
room
4/ All internal panels lined with ~1/2” (12mm) wool felt (preferred), 1“ (25mm)
poly-fluff batting, or 3/4“ (19mm) fiberglass Note that it is hard to get into the
box a9er it is sealed up
82
[3 7 32]
261
[10 9 32]
68
[2 21 32]
231
[9 3 32]
82
[3 7 32]
Wide Classic GR dFonken125 0v8
Fostex FF125wk (15mm)
© 2010-2012 planet_10 enterprises limited
06-March-2012 designed & drawn by dld
free for non-commercial use only

Notes:
0/ A Classic Golden Ratio based derivative of the dFonken125 designed
for modified Fostex FF125wk will work well with stock driver
1/ All panels 15mm
2/ brace shape is only suggestive -- prime purpose is to brace driver, it
needs to be about 35-40% holes. (ie if you have to mount a terminal
cup in the middle, you’ll want to make sure the brace allows clearance),
It is intentionally just off centre.
3/ Don’t forget to angle cut the back of the driver cut-out to give it
breathing room
4/ All internal panels lined with ~1/2” (12mm) wool felt (preferred), 1”
(25mm) poly-fluff batting, or 3/4” (19mm)fiberglass Note that it is hard
to get into the box a7er it is sealed up
Slim Classic GR dFonken125 2v01b
Fostex FF125wk (15mm)
© 2010-2012 planet_10 enterprises limited
09-June-2012 designed & drawn by dld
for non-commercial use only
142
[5 19 32]
172
[6 25 32]
261
[10 9 32]
231
[9 3 32]
46
[1 13 16]
231
[9 3 32]
129
[5 1 16]
367
[14 7 16]
337
[13 91 32]
307
[12]
[12 3 32]
130
[5 1 8]
Ø 40
[Ø 1 9 16]
246
[9 11 16]
15
[ 19 32]
121
[4 3 4]
Ø 60
[Ø 2 3 8]
Ø 25
[Ø 31 32]
106
[4 3 16]
26°

Notes:
0/ A Classic Golden Ratio based derivative of the dFonken125 designed
for modified Fostex FF125wk will work well with stock driver
1/ All panels 15mm
2/ brace shape is only suggestive -- prime purpose is to brace driver, it
needs to be about 35-40% holes. (ie if you have to mount a terminal
cup in the middle, you’ll want to make sure the brace allows clearance),
It is intentionally just off centre.
3/ Don’t forget to angle cut the back of the driver cut-out to give it
breathing room
4/ All internal panels lined with ~1/2” (12mm) wool felt (preferred), 1”
(25mm) poly-fluff batting, or 3/4” (19mm)fiberglass Note that it is hard
to get into the box a7er it is sealed up
Short Classic GR dFonken125 2v01b
Fostex FF125wk (15mm)
© 2010-2012 planet_10 enterprises limited
06-March-2012 designed & drawn by dld
for licenced use only
142
[5 19 32]
172
[6 25 32]
367
[14 7 16]
337
[13 9 32]
73
[2 7 8]
261
[10 9 32]
201
[7 29 32]
231
[9 3 32]
15
[ 19 32]
121
[4 3 4]