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From: aquarius on 6 May 2008 15:52
hi Sascha,

I think the easiest way is doing some drawings, so that's what I
did :-)
I don't know if I can embed images here, so here's the link:
http://www.mellowmatic.net/dayner/images/connections.gif
<img src="http://www.mellowmatic.net/dayner/images/connections.gif"
width="600" height="1000">

On fig. 1 is shown my first try with the issues mentioned in my
earlier post.

On fig. 2 is shown the version which works.
I have to say that I tried this only on the tape returns so far.
For the tape sends it should work in the same way.
Please notice that on the Dayner side the cable shield is not
connected.

Fig. 3 and 4 show the connection from the CRM out to the monitor amp /
active speakers.

Fig. 3 is for balanced inputs.
I highly recommend this version if balanced inputs are available.
Of course there are other options connecting an unbalanced output to a
balanced input.
But I often had good experiences with this one.

Fig 4. shows the (only possible?) connection scheme for unbalanced
inputs.
I encountered hum with this one. But lifting the ground by the ground
lift switch on the power amp made it work.
(If your power amp / active speaker has only unbalanced inputs and no
ground lift switch, there may be a problem.)

again, I hope this helps...

best wishes,

Pierre
From: gickosa on 5 May 2008 18:28
On 30 Apr., 10:26, aquar...(a)pt.lu wrote:
> hi Sascha,
>
> Very interesting your grounding system!
> How did you build the hf filters?
>
> Why do you want to use a DI for connecting your monitors to the
> console?
> Are you encountering problems doing it without?
>
> I don't use any DI and it works fine.
> I have some hum/buzz starting at the 3 o'clock position of my CRM pot,
> but that's already very loud and I don't monitor at such a level.
>
> Some words for the symmetrical mod of the line in's.
> I do own some Dayner split modules which have been modified in that
> way by using a transformer.
> As I bought them used, I don't know if the mod has been done by Dayner
> or by someone else.
> If you're interested in details, please let me know.
>
> greetings,
>
> Pierre

Hello Pierre

Thank you for your help. I have big trouble! In the past, my monitors
are connected to the master outputs. in this way, everything works
fine (zero hum or ground loops!). but now, when i plug it into the crm
out, groundloops whithout a end!! and when i plug in the headphone amp
in the aux 1+2 the desaster is perfect. it seems i have to redone the
complete wiring. can you explain me exactly, how i connect the in and
out to and from the motu (tape send to the motu in, tape return to the
motu out)? I don"t understand completely your wiring example in the
previous post:

My first connection "trial" for the outputs on the MOTU was the
following:
MOTU XLR pin 1 (ground) -> cable shield, not connected to the stereo
jack on Dayner (to avoid ground loops)
MOTU XLR pin 2 (hot) -> ring stereo jack on Dayner (+4 dBu)
MOTU XLR pin 3 (cold) -> sleeve stereo jack on Dayner (audio ground
on
Dayner)
What happened was that I had a low level signal from the MOTU on the
monitors with even all mute switches activated!
I can only explain this that the signal from pin 3 on the MOTU was in
some kind modulating the audio ground of the console.


So I did the following:
MOTU XLR pin 1 (ground) -> cable shield, again not connected to the
stereo jack on Dayner + sleeve stereo jack on Dayner (audio ground on
Dayner)
MOTU XLR pin 2 (hot) -> ring stereo jack on Dayner
MOTU XLR pin 3 (cold) -> not connected
and everything worked as expected.
What do you mean with: MOTU XLR pin 1 (ground) -> cable shield, again
not connected to the
stereo jack on Dayner + sleeve stereo jack on Dayner (audio ground on
Dayner)


Is this solution the same for the tape send and tape return?
please help!

much greetings
sascha
From: gickosa on 7 May 2008 03:57
On 6 Mai, 21:52, aquar...(a)pt.lu wrote:
> hi Sascha,
>
> I think the easiest way is doing some drawings, so that's what I
> did :-)
> I don't know if I can embed images here, so here's the link:http://www.mellowmatic.net/dayner/images/connections.gif
> <img src="http://www.mellowmatic.net/dayner/images/connections.gif"
> width="600" height="1000">
>
> On fig. 1 is shown my first try with the issues mentioned in my
> earlier post.
>
> On fig. 2 is shown the version which works.
> I have to say that I tried this only on the tape returns so far.
> For the tape sends it should work in the same way.
> Please notice that on the Dayner side the cable shield is not
> connected.
>
> Fig. 3 and 4 show the connection from the CRM out to the monitor amp /
> active speakers.
>
> Fig. 3 is for balanced inputs.
> I highly recommend this version if balanced inputs are available.
> Of course there are other options connecting an unbalanced output to a
> balanced input.
> But I often had good experiences with this one.
>
> Fig 4. shows the (only possible?) connection scheme for unbalanced
> inputs.
> I encountered hum with this one. But lifting the ground by the ground
> lift switch on the power amp made it work.
> (If your power amp / active speaker has only unbalanced inputs and no
> ground lift switch, there may be a problem.)
>
> again, I hope this helps...
>
> best wishes,
>
> Pierre

hello pierre

you are a really great person! Thank you so much. The working diagram
(fig.2) i don"t understand exactly. you must know, that on my motu
1224 the connectors are jack. my interpretation of this drawing is as
follows: Pin 1 shield is not connected, but another cable that is
aligned with the shield is connected to the dayner jack sleeve. What
is the difference between pin1 in drawing 1 and pin1 in drawing 2??
what do you mean with the wiring from pin 1 in fig.2?

very much and friendly thanks
sascha
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