Jed

Re: Bo Hansén DI layout
« Reply #160 on: June 09, 2010, 03:45:42 PM »
I just finished one last night with the OEP transformer.

I haven't spent a lot of time with it yet - just a quick test with electric  bass and electric guitar against a GT passive DI.  

This DI has a much higher output and also seemed to have more high frequency content. Overall it sounds **great**.

I can't wait to use it more.

Thanks very much to Bo for providing this design to the world, and to Soeren and any others who helped out for making it such an easy project!

Jed
Do you have a dead Korg Polysix in your closet? Did the battery explode?
Fix it with a new KLM-367A PCB Clone.
http://sites.g


sverige_cruz

Re: Bo Hansén DI layout
« Reply #161 on: June 11, 2010, 02:14:38 AM »


Thanks to Bo and Soren for putting the work into this. First impression is that it sounds great. Wish I would have built this a long time ago.

Cheers,
Jesus


PS - Tecate tastes a hell of a lot better with lemon... (cheap beer so I can buy more components)  8)

[silent:arts]

Re: Bo Hansén DI layout
« Reply #162 on: June 11, 2010, 10:56:05 AM »
thats a good deal on the haufe transformers.
do you have them in stock already?
now in stock:
http://www.groupdiy.com/index.php?topic=39570.0

wowi

Re: Bo Hansén DI layout
« Reply #163 on: June 13, 2010, 12:19:22 PM »
Thanks for the answers. Millenium DI-Pro is interesting.... I wonder what type is this Haufe transformer.
For your information, I received pricing for 4*ST8456 : 217,55EUR incl shipping to France...
Best regards.
Eric

It's a Haufe ST8123

Wolfgang

RedNoise

Re: Bo Hansén DI layout
« Reply #164 on: June 13, 2010, 02:34:54 PM »
Hi , do someone know the dimensions of the pcbs please ?
If your neighbour is hunger : don't give him fish , teach him how to fish ...
if you don't like it don't buy it ;-)  [Wolker Texas Ranger] ( ;-) )

Soeren_DK

Re: Bo Hansén DI layout
« Reply #165 on: June 13, 2010, 02:53:39 PM »
Hi , do someone know the dimensions of the pcbs please ?

50 x 80 mm  ;)

Cheers
Søren
Quote from: idylldon
...it works like a champ and is as quiet as a mouse pissing on a cotton ball.

http://www.soundcloud.com/doctorsclub

RedNoise

Re: Bo Hansén DI layout
« Reply #166 on: June 13, 2010, 03:34:03 PM »
thousand thanks!! ;D
If your neighbour is hunger : don't give him fish , teach him how to fish ...
if you don't like it don't buy it ;-)  [Wolker Texas Ranger] ( ;-) )

pacemaker

Re: Bo Hansén DI layout
« Reply #167 on: June 14, 2010, 06:02:55 AM »
Hi Soeren and Bo,
it might me a dumb question
but what is the purpose of the "chassis" pin hole,
i thought the only connection to chassis was through the XLR pin 1,
regards,
Francois

zebra50

Re: Bo Hansén DI layout
« Reply #168 on: June 15, 2010, 03:33:11 AM »
Take another look at the bottom right of the schematic.

You can see that pin 1 is lifted above ground with a cap, 2 diodes and a resistor.
Ribbon microphone services
http://www.xaudia.com
Microphone blog

pacemaker

Re: Bo Hansén DI layout
« Reply #169 on: June 16, 2010, 05:21:54 AM »
on the schematics it is,
but not on the boards,
there's a trace between pin 1 hole and "chassis" hole,
or am i missing something ?
regards,
Francois


Bo Hansen

Re: Bo Hansén DI layout
« Reply #170 on: June 16, 2010, 12:45:05 PM »
Francois,

Everything is ok,

The metal box "chassis" shall be connected to XLR pin 1, so it is the electronic ground "0 volt" on the pc-card, that is isolated from XLR pin 1 and metal box with the "ground loop circuit" build with two dodes, one 100 ohm resistor and 0,1uF capacitor.

Ok, you can do the pin 1 connection to metal chassis direct on the XLR connector, but it more safe to use the connection from pc-card to a solder tag/lug with a separate screw direct to metal chassis.

NOTE, both tele jacks must be isolated from the metal chassis, use "Cliff Plastic" brand, mono-BB version, they are the best for this application.

--Bo
« Last Edit: June 16, 2010, 01:07:51 PM by Bo Hansén »
I met a man with a dollar, we exchanged dollars, I still had a dollar.
I met a man with an idea, we exchanged ideas, now we each had two ideas.

VanGenz

Re: Bo Hansén DI layout
« Reply #171 on: June 17, 2010, 05:35:38 PM »
What is the input impedance of this DI?

Soeren_DK

Re: Bo Hansén DI layout
« Reply #172 on: June 17, 2010, 05:40:34 PM »
What is the input impedance of this DI?
1M ohm...  ;)

Cheers
Søren
Quote from: idylldon
...it works like a champ and is as quiet as a mouse pissing on a cotton ball.

http://www.soundcloud.com/doctorsclub

Re: Bo Hansén DI layout
« Reply #173 on: June 21, 2010, 11:39:09 AM »
I ordered some boards and transformers this weekend. I just made up a BOM for anyone that's interested.

http://benlindell.com/diy/Bo-Hansen-DI-BOM.pdf

Excited to hear this thing.

Soeren_DK

Re: Bo Hansén DI layout
« Reply #174 on: June 21, 2010, 02:06:58 PM »
I ordered some boards and transformers this weekend. I just made up a BOM for anyone that's interested.

http://benlindell.com/diy/Bo-Hansen-DI-BOM.pdf

Excited to hear this thing.
Thanks ;) ;)
I have updated the first post..

Cheers
Søren
Quote from: idylldon
...it works like a champ and is as quiet as a mouse pissing on a cotton ball.

http://www.soundcloud.com/doctorsclub

diyfanatic

Re: Bo Hansén DI layout
« Reply #175 on: June 22, 2010, 07:21:37 AM »
I've made a BOM too (waiting to for my tx and board)

for European @ banzaieffect:

http://docs.google.com/leaf?id=0B2Ajbn3wU-UiN2Y1OWJkN2MtYzVhZi00Nzc3LWE1OWEtZjcwMGExZGRkZWUz&hl=en

everything is linked so it should be easy but use it at your own risk... ::)

Soeren_DK

Re: Bo Hansén DI layout
« Reply #176 on: June 22, 2010, 08:49:30 AM »
I've made a BOM too (waiting to for my tx and board)

for European @ banzaieffect:

http://docs.google.com/leaf?id=0B2Ajbn3wU-UiN2Y1OWJkN2MtYzVhZi00Nzc3LWE1OWEtZjcwMGExZGRkZWUz&hl=en

everything is linked so it should be easy but use it at your own risk... ::)
Thanks.  ;)Updated the first post ;) ;)

Cheers
Søren
Quote from: idylldon
...it works like a champ and is as quiet as a mouse pissing on a cotton ball.

http://www.soundcloud.com/doctorsclub

justanalogue

Re: Bo Hansén DI layout
« Reply #177 on: June 22, 2010, 12:12:17 PM »
Received my boards today.
Nice work, thanks to all involved in this.

Kind regards,

Willem.

Re: Bo Hansén DI layout
« Reply #178 on: June 22, 2010, 03:44:01 PM »
I have a question for the people using the OEP.  Are you using it with the Mu-Metal Can or without?  I'm about to order parts and was wondering if the can is necessary. 

Thanks.

Jed

Re: Bo Hansén DI layout
« Reply #179 on: June 22, 2010, 03:50:32 PM »
I used it with the can. I did not try it without...
Do you have a dead Korg Polysix in your closet? Did the battery explode?
Fix it with a new KLM-367A PCB Clone.
http://sites.g


 

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