PD170 / audio challenge during Ballet Recital at DVinfo.net

Ken Beals · June 5th, 2005, 03:01 PM

The PD170 was the center camera and had a direct line from the board.

The patch out actually went to a monitored mixer and then line out to channel 2 on the PD170.

The settings on cam:
1) AGC = OFF
2) Channel 2 = LINE / +48

The feed as it sounded with headset was overmodulated / blown out

Yet the one monitoring at the mix board said the signal out was clean.

The Recital had two audio sources:
1) 1st half = Live piano / stage
- wireless mic
2) 2nd half = CD
- from control room

At first thought it was the wireless was unable to handle the piano but the overmodulation was the same with the CD feed.

Tried different combo's on the fly to correct:
1) Cable feed into Channel 1 with following settings:
a) Channel 1/2
b) Line
c) +48
2) Linked both channels
3) tried with +48 off
4) set to "Mic" instead of "Line"

Eventually went into menu and turned AGC on.

This seemd to make it sound cleaner but the audio level pegged out to "0"

suggestions ?

Mike Rehmus · June 5th, 2005, 03:21 PM

You need to pad the level down from the mixer. They seem to feed something halfway between Line and microphone levels.

I bought a Behringer Direct Box called the Ultra-DI. It can handle the wierd setups and can even go directly across speaker wires.

Otherwise, the Audio Technica 3-position attenuator will probably solve all those problems too.

Everyone: Don't think these are camera problems. They are sound problems and you will find solutions over in the Sound forum, Now Hear This. The moderator there is extremely good and is even a very nice guy. Hear that Spot?

June 5th, 2005, 03:01 PM	#1
Ken Beals Regular Crew Join Date: Nov 2004 Location: Tempe, Az Posts: 172	PD170 / audio challenge during Ballet Recital The PD170 was the center camera and had a direct line from the board. The patch out actually went to a monitored mixer and then line out to channel 2 on the PD170. The settings on cam: 1) AGC = OFF 2) Channel 2 = LINE / +48 The feed as it sounded with headset was overmodulated / blown out Yet the one monitoring at the mix board said the signal out was clean. The Recital had two audio sources: 1) 1st half = Live piano / stage - wireless mic 2) 2nd half = CD - from control room At first thought it was the wireless was unable to handle the piano but the overmodulation was the same with the CD feed. Tried different combo's on the fly to correct: 1) Cable feed into Channel 1 with following settings: a) Channel 1/2 b) Line c) +48 2) Linked both channels 3) tried with +48 off 4) set to "Mic" instead of "Line" Eventually went into menu and turned AGC on. This seemd to make it sound cleaner but the audio level pegged out to "0" suggestions ? __________________ Mediocrity is a disease...

June 5th, 2005, 03:21 PM	#2
Mike Rehmus Wrangler Join Date: May 2002 Location: Vallejo, California Posts: 4,049	You need to pad the level down from the mixer. They seem to feed something halfway between Line and microphone levels. I bought a Behringer Direct Box called the Ultra-DI. It can handle the wierd setups and can even go directly across speaker wires. Otherwise, the Audio Technica 3-position attenuator will probably solve all those problems too. Everyone: Don't think these are camera problems. They are sound problems and you will find solutions over in the Sound forum, Now Hear This. The moderator there is extremely good and is even a very nice guy. Hear that Spot? __________________ Mike Rehmus Hey, I can see the carrot at the end of the tunnel!