Soeren_DK

Re: Bo Hansén DI layout
« Reply #20 on: December 07, 2009, 05:41:55 AM »
The latest design.
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 #21 on: December 07, 2009, 10:13:58 AM »
You could fit those components on much smaller board area. Easier to place it in an enclosure and it could have some (minimal) effect in noise pickup too.

[silent:arts]

Re: Bo Hansén DI layout
« Reply #22 on: December 07, 2009, 11:21:40 AM »
Bo, transformer is on its way :)

3nity

Re: Bo Hansén DI layout
« Reply #23 on: December 07, 2009, 12:19:33 PM »
I have a layout done for this and i used Cinemag, Lundhalland OEP iron..
3.5" x 2" let me know anything..
Life is a path, death the destination.

Soeren_DK

Re: Bo Hansén DI layout
« Reply #24 on: December 08, 2009, 02:43:57 PM »
I have a layout done for this and i used Cinemag, Lundhalland OEP iron..
3.5" x 2" let me know anything..
Do you have some drawings you can upload here?

Cheers
Soren
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

Bo Hansen

Re: Bo Hansén DI layout
« Reply #25 on: December 08, 2009, 02:50:59 PM »
Audiox,

I think it is a great layout Soren have done, and the size is very convenient for DIY, (some of the builders is maybe not so practised with small pc-board and components)

And you must still have a stable box that fit a XLR and two jacks, so you will have the space inside.

No problem with noise pick-up, if you use a metall case, that you shall do in this case.


Silent:arts,

Thanks a lot,
I will test it and get back to you with the result.

--Bo
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.

3nity

Re: Bo Hansén DI layout
« Reply #26 on: December 08, 2009, 11:24:25 PM »


Iron its OEP/Lundhall/Cinemag.
C1 i let some place for Wimas 10uf.

Dimensions are: 3.5" x  2"..

I havent had time or funds to test it yet..
Life is a path, death the destination.

flaheu

Re: Bo Hansén DI layout
« Reply #27 on: December 09, 2009, 06:17:32 AM »
Hi guys,

All this is interesting for sure.
I've done several of these with 1:6.45 OEP tx, and it sounds really great.
I have also put a small LED for "power on" on mine, it was a tiny led (1.8mm diameter with a high value resistor for low consumption)
...may be a nice addition.............. ;)
As MagnetoSound said:
"Sad lack of balls in today's bands, IMO"

rotation

Re: Bo Hansén DI layout
« Reply #28 on: December 09, 2009, 06:54:32 AM »

Yeah, OEP sounds interesting and nicely colored, but it will not take VERY high levels. I also tried it with Cinemag CMMI-7C, it beats any expensive Radial DI etc.
This is serious design with very good sound.

Thanks a lot Bo, my friends and me really enjoyed this project!

Miha

[silent:arts]

Re: Bo Hansén DI layout
« Reply #29 on: December 09, 2009, 06:59:56 AM »
...
I have also put a small LED for "power on" on mine, it was a tiny led (1.8mm diameter with a high value resistor for low consumption)
...may be a nice addition.............. ;)
looking at Soeren_DKs latest design I can see a LED  :D


jensenmann

Re: Bo Hansén DI layout
« Reply #30 on: December 09, 2009, 01:36:59 PM »
I did a pair of these DIs on perfboard with Haufe iron. These DIs won since then every shootout against any highpriced brand (lowpriced either). Definitely a wonderful tool and worth every cent. It´d even be worth to have them in a 51x version.  ;)
Jens
Quote from: PRR
The tubes of course don't care what frequency they distort

[silent:arts]

Re: Bo Hansén DI layout
« Reply #31 on: December 09, 2009, 01:50:02 PM »
Jens, which Haufe iron did you use?
a 51x version sounds like a good idea btw  :-*

flaheu

Re: Bo Hansén DI layout
« Reply #32 on: December 10, 2009, 04:08:37 AM »
 ;) my bad for the LED, didn't see it
As MagnetoSound said:
"Sad lack of balls in today's bands, IMO"

jensenmann

Re: Bo Hansén DI layout
« Reply #33 on: December 10, 2009, 07:09:08 AM »
It´s a Haufe T5223 4:1
Datasheet is at kubi´s page
CJ did hack one of these and stated that it´s one of the best transformers he ever took apart.
« Last Edit: December 10, 2009, 07:13:13 AM by jensenmann »
Jens
Quote from: PRR
The tubes of course don't care what frequency they distort

Bo Hansen

Re: Bo Hansén DI layout
« Reply #34 on: December 10, 2009, 02:43:02 PM »
Flaheu,

If you look on version 4-2 (replay #20) below the 100 uF electrolytic, with text "LED or Link".

I use a LED connected in serial with the voltage feed, after the two 6,8k phantom resistors.
In this case, the LED don´t steal any additional current from the phantom line.
You get only a small voltage drop, (approx. 1,5 volt with a red LED) so you not reduce the emitterfollower headroom hardly noticeable.
(compare with a normal connected LED with a minimum current (approx. 2 mA/10k limit resistor) and you get maybe 6 volt drop)

--Bo
« Last Edit: December 10, 2009, 02:46:57 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.

Moses

Re: Bo Hansén DI layout
« Reply #35 on: December 11, 2009, 05:29:35 AM »
Jensenmann,

Where did you pick up your Haufe iron? Their website seems to indicate they only do custom jobs, although my German (and Google translator's!) is pretty flawed so Im more than likely wrong on that!!

Mo

wolfgang

Re: Bo Hansén DI layout
« Reply #36 on: December 15, 2009, 12:58:41 PM »
Quote
nice. I will toss away my layout I started   
to confuse a little more, there is a nice Haufe transformer, designed to replace the LL1538 ...
we will use it as an option in the JensAmp, since (even it is Haufe) the price is much lower

To Silentarts:

Do you mind sharing some infos on this transformer? Partnumber, specs and where it is available?

I could not find any haufe distributor on the web and also no model description on their own website.

Thanks,
Wolfgang


[silent:arts]

Re: Bo Hansén DI layout
« Reply #37 on: December 15, 2009, 03:15:23 PM »
To Silentarts:
Do you mind sharing some infos on this transformer? Partnumber, specs and where it is available?
I could not find any haufe distributor on the web and also no model description on their own website.
Well, we will wait for Bo if the sample I shipped to him reacts positive in his circuit design.

You won't find any Haufe distributor, and they only do build to order.
which makes a one off very expensive (my RK204 was EUR 120+ if I recall correctly).
If Bo is fine with this transformer (not the RK204, it is a ST), and the PCBs are available, I will think of buying a larger quantity and have them in stock.

since they are not available & untested by Bo yet it doesn't make sense to talk about the specs etc

wolfgang

Re: Bo Hansén DI layout
« Reply #38 on: December 15, 2009, 03:30:29 PM »
Thank you for clearing this up!

Ao you will stock them at you webshop?! Very nice!
When will the shop be online btw? I am very curious about it!


regards,
Wolfgang

[silent:arts]

Re: Bo Hansén DI layout
« Reply #39 on: December 15, 2009, 04:10:32 PM »
Ao you will stock them at you webshop?! Very nice!
When will the shop be online btw? I am very curious about it!
plans for beeing online: not in 2009 anymore
for the trafos and stock yes, but first we need available PCBs ;D
to be back on topic :)


 

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