I sometimes use a Sony Wireless hand held mic (UTX-H2) and receiver (URX-P2) attached to CH1 on the camera. I have tried it in CH2 but it does not work. I also have a camera mounted shotgun mic in CH2.
My problem is that I can run the hand held mic in CH1 no problem but when I shut it off I have to plug in the shotgun into CH1 or it does not work. I would like to be able to not have to replug the shotgun and have it work when the hand held is shut off without having to plug it into CH1. Any suggestions? Thanks!

I have the Audio Setup as follows:

Output CH ----All CH/All CH
CH 1 Input --- XLR Mic
CH2 Input --- XLR Mic
XLR REC CH --- CH1/CH2

Hi John I'm not surprised to see someone having strife, the A1s has a complicated mic set up and the manual is missing some audio info. Have you got the 48volts enabled on Ch2 and not on CH1 or the other way around?

How about attenuation on the XLR inputs, is CH1 on and CH2 off or the other way around? Turn both audio limiters off. Did you make up a custom XLR cable for the URX-P2?

Check your other audio settings in the cams menu and btw welcome to the forum :) Cheers.

Both mics have been running off of batterys not 48V.

The attenuation switch is Off.

Audio Level switches are on "A"

XLR Mic Att is off on Ch1 and Ch2.

No custom cable for wireless receiver.

I read in the manual page 51 2/3rds the way down "When XLR REC CH is set to CH1/CH2 audio from the CH2 input terminal will not be recorded". Only other option is go to CH1 in menu. Weird. Does this mean CH2 is useless?

"I read in the manual page 51 2/3rds the way down "When XLR REC CH is set to CH1/CH2 audio from the CH2 input terminal will not be recorded".

Yep it looks that way so that XLR CH 1 input (mono) is fed to both tape audio tracks.

Page 52. In menu ..select AUDIO SETUP then XLR ALC LINK and SEPARATE.

Set Audio Level switch to "M"
HTH Cheers.

XLR ALC LINK and SEPARATE.
This option remains blanked out not matter what I do? Is CH2 inoperative? I want to control each channel separately and manually. I have an Audio Technica Stereo mike that requires phantom power

Tim which model Audio Technica mic do you have?

If it has 2 XLR outputs, turn the 48V off and try plugging the right XLR into the A1s channel 2. Switch the 48V on and see if the XLR ALC LINK in the menu is enabled.

Cheers.

It's the Audio Technica 825. Sorry, I should have mentioned that....should I still try what you suggest? Does the camcorder actually have two mike preamps?

I tried this with each mike input. Only Ch1 works and Link remains blanked out

Tim, yep they have 2 mic preamps.

With XLR Ch 1 selected to mic, you haven't got XLR Ch 2 selected to 'line input' by any chance? Manual pages 50-52. Cheers.

No, the two mike inputs are set to XLR Mike. All I want is to have the AT mike work the way it is supposed to!

Try the AT825 with both its XLR inputs connected, 1 and 2. Use headphones to see if both A1s channels (left and right) currently work off the channel 1 volume control.

That's want you'd want to have happen so your stereo audio image stays centred. In other words you don't want to separate channels 1 and 2 in this instance. Cheers.

I tried this. Both vu meters are reading sound, but Trim for Ch2 is blanked out as well as the ALC link. Gain is manual and controlled by CH1 for both channels. Listened on headphones but not sure if I was getting stereo.

To check the stereo, via h/phones you or someone, click their fingers each side (left and right) of the AT825.

Try a camera reset then check all the cam onboard mic settings, all of them. If no go, go through the manual page by page, and/or call Canon support or around local cam shops for clues. When you correct it .. let's know. Best I can do, good luck.
Cheers.