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Genelec 8240a - system setup via AES/EBU

kinglourinho, modified 8 Years ago.

Genelec 8240a - system setup via AES/EBU

Youngling Posts: 9 Join Date: 8/16/13 Recent Posts
Dear all,

I've recently purchased a pair of 8240a's and I am currently waiting for the GLM package to arrive. Can't wait!!!!! ;)
In the meantime I am struggling to get my head around my setup: I have my computer connected via firewire to a MOTU 896 interface and then linking the Motu analog main outputs (left + right) to each 8240a, accordingly.
Now, as daft as it may sound, I am puzzled with the AES/EBU output in the MOTU and how can I possibly make use of it to connect the 8240a's: firstly because is just a single XLR output to two speakers, secondly how can I possibly have a stereo configuration under these conditions? :roll:

Am I right to assume that the 8240a's will need to be feed digitally by a unit with at least 2 AES/EBU outputs? Also, and to bring this to an end, how is the AES/EBU THRU purpose and how is it used in the "real world"?

I apologise in advance for the questions and doubts I have but I'm just trying to fully understand these amazing speakers and learning how to make the most out of them.

All the best.
maximilian, modified 8 Years ago.

Re: Genelec 8240a - system setup via AES/EBU

Youngling Posts: 12 Join Date: 4/13/13 Recent Posts
Hello!

First of all you need to decide if you want to drive the speakers via analog (as you have connected them now) or digitally via AES/EBU. The sound of both options will be identical. I personally would only connect one or the other.

As soon as you add a 7200 subwoofer it must be digital, as these do not handle analog.

So for now with the 8240s only: If you go with the digital option: If the AES/EBU cable carries two digital audio channels, run another cable from the “Thru” output of the loudspeaker to the input of the next loudspeaker.

Hope that helps...cheers
kinglourinho, modified 8 Years ago.

Re: Genelec 8240a - system setup via AES/EBU

Youngling Posts: 9 Join Date: 8/16/13 Recent Posts
Dear Maximilian,

Thank you very much for the clarification. Much appreciated!!!
Has I'm not familiar with AES/EBU technology I wasn't aware - at all - that one single cable would carry both right and left channels... Also, following your reply, I read that appropriate AES/EBU cables are needed for the connections as the regular XLR mic lead, although very similar, does not carry the signal.
So, I reckon my mistake (and confusion) lies in the fact that I was completely convinced that the conventional mic lead would do the job. Clearly not!!!
Dear me... :oops:

All the best!

Ric
kinglourinho, modified 8 Years ago.

Re: Genelec 8240a - system setup via AES/EBU

Youngling Posts: 9 Join Date: 8/16/13 Recent Posts
Dear Genelec friends,

I've got now a brand new set of AES/EBU cables and I've just wired my system: MOTU 896 AES OUT > 8240a AES IN (Right) > 8240a AES THRU (Right) > 8240a AES IN (Left)

Now, my problem remains the same... I have no stereo separation!?!?! :roll:

I went to the MOTU Audio setup properties and choose the AES/EBU outputs, launched Logic Pro 9 and in the audio preferences choose the motu channels 9-10 (default for the digital outputs).
The problem is whenever I hit play and change the panning settings in the output fader (or in any other channel, basically) I have no clear stereo separation! I can hear however a slight change in volume in both speakers ( quite similar to a stereo spreader) but nothing close to a clear Left to Right image separation. I have although an healthy output meter readings both R + L in the MOTU interface.

I completely understand this is going slightly beyond the Genelec topic but I am getting quite desperate and I can't get my head around this problem. I've ran out of options!...

Help me please!!! :cry:

All the best.
digipete, modified 8 Years ago.

Re: Genelec 8240a - system setup via AES/EBU

Padawan Posts: 99 Join Date: 6/18/11 Recent Posts
Just get the GLM package and use the system as it was designed.

It's magnificent, especially when you eventually try it out with a matching sub.
ilkka-rissanen, modified 8 Years ago.

Re: Genelec 8240a - system setup via AES/EBU

Yoda Posts: 2564 Join Date: 3/23/09 Recent Posts
Hi,

By default, both speakers are playing a sum (A+B) of both AES/EBU channels. If you don't plan to use GLM, you have to configure it manually. Please set the left speaker to play channel A (set 2nd dip on the 2nd row ON), and right speaker to play channel B (set 3rd dip on the 2nd row ON). Also check that 1st dip on 2nd row is set to OFF.
kinglourinho, modified 8 Years ago.

Re: Genelec 8240a - system setup via AES/EBU

Youngling Posts: 9 Join Date: 8/16/13 Recent Posts
Thanks Ilkka,

Great!!! :D

Regards