We just finished a gospel concert/sing along with about 200 folks in a long hall that had very active acoustics.

The weapon of choice was our Yamaha DXR15 with the Tyros.

I ran my wife's vocals through the Tyros as she uses the harmonizer and I ran directly into the DXR15 mike input.

Impressions:

Tons of compliments on the sound...

Vocals were clear and crisp(both mine and hers) and if they were colored at all by the speaker(not sure?)...the vocals were colored in a very pleasant way.

Sound projected very well from the front of the hall to the back.

I did get a bit more bass than I thought I wanted from the stage but the audience said it was good. The bass issue is most likely operator ignorance at this point.

We did use this speaker yesterday with a small group...20 folks..and ran the DSP in monitor mode...low volume and it worked very well.

The speaker has more than enough power for this venue.

One thing that kind of blew me away.....

My wife uses a remote mike. I cautioned her not to point the mike at the front of the speaker.

During the sound check...with volume levels up significantly...she walked up to the DXR15..singing loudly and then out in the audience area.

Virtually no feedback!. And I mean none. This is the first system I've used since the Bose that I can claim that.

I'm not sure what Yamaha is doing sound wise...but it's impressive.

Rog