Tuesday 22 March 2011

Audio Equipment used in the hall

I would like to share about the Audio Equipment used in the hall. I made some observations :
The main speakers: 8x YAMAHA C-112 (4 in front and 2 on each side = 8) These are quite popular; you see them everywhere. They deliver 350 Watts @ 8 Ohms of power from a 12 inch two way speaker. They are quite durable and can last a long time. It costs about $500 each, reasonable in price.
For our rehearsal today, we used 3 Audio Technica microphones and a dynamic microphone. (Knew it ... Somehow, Audio.T microphones seem to be used everywhere, including live concerts) I believe the microphone we used were the Line + Gradient Condenser / Shotgun types, because they are very long ( >11") and cylindrical in shape. I think they are the

AT835b mics. These are (DISCONTINUED). The new model is AT8035 The microphones were used for overheads for each section. The condensers are quite good.

There are also 2 wireless microphones by Shure ( Shure SM58 Microphone w/ PGX2 Handheld Transmitter ) These are for vocals. Shure is good brand too.
Unfortunately, the only complaint is that the volume is too soft. The reason being:- there are only 4 microphones for the whole orchestra. Then again, audio equipment is expensive and it would be unreasonable to expect more microphones.
I think the Royer SF-24 Stereo Active Ribbon Microphone is a good overhead microphone. Place it over the conductor's head :P It is an excellent location for getting a realistic audio picture of the orchestra . (Single mic-technique)
R-122 /R-122V Microphone(
$1,895.00,
$2,995.00
)!!!
is a really good microphone. They can also be on a

Decca tree. :)

The musician to mic. ratio would be at least 4:1 -Overheads on different instruments.

Imagine
)
SF-24V(
Tube Stereo Ribbon Microphone
List price: $6,195.00 :|
If you want to compare sound quality:
and you would be astounded at how many microphones they use, even for a small orchestra. If our school were to have that many microphones, it would go broke !!!
Maybe $40,000 just on microphones alone ???
As for the venue acoustics, don't expect too much. When it is empty, you can hear some reverberation. But when it is filled, the acoustics change too. The rear wall is triangular, meaning the roof is angled downwards towards the stage. It would be good if acoustic panels can be installed at the rear wall.

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