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Multi-Way Conventional loudspeakers with crossovers

Looking for Dynaudio Focus 140 crossover schematic
Looking for Dynaudio Focus 140 crossover schematic
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Old 10th April 2012, 07:58 AM   #1
Joostp is offline Joostp  Netherlands
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Default Looking for Dynaudio Focus 140 crossover schematic

I have been trying to get my hands on the crossover schematic for the Dynaudio Focus 140 but have not been able to find it.

Can anyone help me with this?
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Old 10th April 2012, 11:34 AM   #2
Inductor is offline Inductor  Portugal
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Do you have the drivers (Or loudspeaker for the matter)?
http://www.stereophile.com/standloud...rs/506dynaudio
Maybe this is of any help.
http://www.gattiweb.com/images/dynau...w75xl_data.pdf
http://www.gattiweb.com/images/dynaudio/d28-2_data.pdf
http://www.gattiweb.com/images/dynaudio/foccus4.pdf

Last edited by Inductor; 10th April 2012 at 11:42 AM. Reason: foccus pdf's
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Old 10th April 2012, 01:08 PM   #3
Joostp is offline Joostp  Netherlands
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Thanks for the info!
Yes i have them here for a while to try some modding.
A friend asked if i could replace internal cabling, add some bracing and possibly swap some crossover components for higher quality ones.
Has anyone ever modified a Focus 140 and is willing to share his experience?
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Old 10th April 2012, 09:37 PM   #4
Joostp is offline Joostp  Netherlands
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Looking over the info on gattiweb i noticed this is about the 'foccus speaker' a diy kit.
It looks almost identical but does anyone know if the crossover is the same?
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Old 11th April 2012, 03:03 AM   #5
Inductor is offline Inductor  Portugal
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Quote:
Originally Posted by Joostp View Post
Thanks for the info!
Yes i have them here for a while to try some modding.
Quote:
Originally Posted by Joostp View Post
Looking over the info on gattiweb i noticed this is about the 'foccus speaker' a diy kit.
It looks almost identical but does anyone know if the crossover is the same?
If you have the originals, can't you compare them?!
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Old 11th April 2012, 07:02 AM   #6
Joostp is offline Joostp  Netherlands
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Quote:
Originally Posted by Inductor View Post
If you have the originals, can't you compare them?!
Ha, yes i can compare them but not all crossover components have values/labels on them. I can try to measure all components and compare.
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Old 27th November 2012, 06:11 PM   #7
joe8106 is offline joe8106  Mexico
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Hi Joostp

Finally did you improve the focus 140?
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Old 27th November 2012, 07:05 PM   #8
xjr100 is offline xjr100  Europe
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Quote:
Originally Posted by Joostp View Post
I have been trying to get my hands on the crossover schematic for the Dynaudio Focus 140 but have not been able to find it.

Can anyone help me with this?
There is old thread in one forum about upgrading Focus 140.
There we follwowing changes:
tweeter -> Morel MDT30
original crossover -> match new tweter + better caps
Internal wiring.

Here is schematics from original crossover:

Click the image to open in full size.

I suggest the following for your Focus:
C1 -> Auricap XO 4.7/200
C2 -> Auricap XO 10/200

The rest capacitors you can try Mundorf MCap400
Bass network: try both - Mundorf and original - it could be that electrolytic can give some "disdetalisation", which you could like more, as polypropelene caps could be to "clean" there.

Internal wiring: replace it to Audience Auric Hook-up - in upgrade I've mentioned owner reported that replacing wires brings positive changes.
__________________
Auricap XO, Mundorf, Jantzen capacitors, coils, MSolder, terminals, DH-Labs interconnect & speaker cables, internal wiring for DIY & upgrades are here: www.audiohobby.eu
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Old 27th November 2012, 09:19 PM   #9
joe8106 is offline joe8106  Mexico
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Quote:
C1 -> Auricap XO 4.7/200
C2 -> Auricap XO 10/200 by xjr100
Maybe C3 could be an Aurycap too, isn't it ?

and what about for L3? a Goertz, 14 AWG
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Old 28th November 2012, 12:22 AM   #10
joe8106 is offline joe8106  Mexico
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I attach an image.
Attached Images
File Type: jpg focus140.JPG (742.3 KB, 252 views)
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