[AG-TECH] ClearOne Converge to Room Audio

Tue Mar 9 01:29:14 CST 2010

Ian,

I've got some experience tuning the sound system with:

- ClearOne RAV 600 and Converge 560
- 12-channel compact mixer (Alesis MultiMix)
- Audio-Technica AT849, Sennheiser e901, Shure SM58

But, it is necessary some sound engineering.

If you have a good mixer and mics, you don't need the ClearOne unit. It's possible  to send the computer audio to the mixer ( Male 1/8” (3.5mm) to Male 1/4" ), and send the microphones audio from the mixer to the computer using a Mixer aux-output channel . An unidirectional-cardioid mic (Sennheiser e901, Shure SM58,...) rejects sounds from the rear part, so you can avoid the feedback (the cause of echo) if you set the mic behind the speakers.  Normally, the rooms or auditoriums with a sound system installed (mixer and speakers) wil have this setup. Also, I have had AG sessions in auditoriums with an equaliser unit with feedback control system, so that improves the sound quality.

On the other hand, I built and adaptor cable to send the computer audio to the mixer through the ClearOne device (in order to use the ClearOne microphones); in the case of RAV 600 and Converge 560, I had to strip the sheath off the wire on one side of the cable, and on the other side solder a Male 1/4  plug.  

If you are using powered speakers, you must use the mixer between the ClearOne device and the speakers, otherwise it's possible to damage the amplification on the output circuit in the ClearOne.

if you need any additional information, please feel free to contact me with any questions you may have.

Cheers,

________________________________________________________
William A. Romero R.    <http://www.waromero.com>

The Australian e-Health Research Centre
CSIRO ICT Centre

----- Mensaje original -----
De: "Roberts, Ian E" <ian.roberts at pnl.gov>
Fecha: Martes, 9 de Marzo de 2010, 10:16 am
Asunto: Re: [AG-TECH] ClearOne Converge to Room Audio
A: AG <ag-tech at mcs.anl.gov>

> A little more information for you. I had to get access to the 
> room with my equipment in it.
> 
> I have a Converge Pro 840T and I basically just want Line Out to 
> go to the amp that powers the room speakers. Is it as simple as 
> stripping the ends off a standard audio cable and poking it in 
> the Line Out connectors? If I go line out will I still be able 
> to control output volume via software?
> 
> ~ian
> 
> On 3/8/10 3:24 PM, "Lloyd Pearson" 
> <lloyd.pearson at otago.ac.nz> wrote:
> 
> Hello Ian,
> Your details are not clear.  Do you mean the room's mixer 
> is used for playing into the room's own amplifier and speakers? 
> And what model of ClearOne Converge?
> 
> You may be able to select the record output to feed to your room 
> PA system. The record output on a converge 560/590 uses two RCA-
> Phono labelled L and R OUT (but which are of course mono) so a 
> dual RCA-Phono to whatever connector your mixer uses should suffice.
> 
> Alternatively if you wish to continue to use the internal 
> Converge amplifier so that you can use the Converge software 
> controls for your room levels, you could make a small attenuator 
> to reduce the speaker signals to a suitable level for your mixer 
> inputs.Two resistors in series of a high enough value so that 
> they won't get cooked by the amplifier output is all that is 
> needed for each channel. Feed the centre tap of each to the 
> mixer inputs.
> 
> 
> Regards,
> Lloyd Pearson
> AVCC Operator
> University of Otago
> Ph +64 3 479 8997
> lloyd.pearson at otago.ac.nz
> 
> 
> On 3/8/10 1:21 PM, "Ian Roberts" <ian.roberts at pnl.gov> wrote:
> 
> Hi folks, I'm setting up my grid in a new facility, and I won't 
> be able to
> use my regular bare-wire speakers that come out of the back of 
> my ClearOne
> device with the Phoenix cables. What I need to be able to do is 
> have the
> ClearOne output to some standard (either RCA or 1/8" jack) to 
> plug into the
> room's mixer. Is that something the Converge can do by default, 
> or do I need
> to do some wiring to get the right plug on the end of the 
> speaker wire?
> 
> Thanks! ~ian
> 
> ____________________________
> Ian Roberts
> NVAC Digital Media | Interaction Designer
> Pacific Northwest National Laboratory
> http://nvac.pnl.gov | http://www.pnl.gov
> http://linkedin.com/in/ianeroberts
> 
> 
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.mcs.anl.gov/pipermail/ag-tech/attachments/20100309/abe246c1/attachment.htm>