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Mic Pre-amp

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Steven Gladstone
Mic Pre-amp
on Feb 15, 2011 at 1:34:30 pm

I'm trying to use my hardwired Tram 50 with my EX-1, however the level comes in very low. This is with the battery in the tram, and with the +48 phantom power. The mic works fine with my old DVX-100, and I've had an audio check it on a mixer.

So is there a way to increase the mic pre-amp above -11udb (that seems to be as high as I can set it in the menu.)?

Thanks

Steven Gladstone
http://www.gladstonefilms.com


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Don Greening
Re: Mic Pre-amp
on Feb 15, 2011 at 8:00:19 pm

[Steven Gladstone] "So is there a way to increase the mic pre-amp above -11udb (that seems to be as high as I can set it in the menu.)?"

Steven, you're going the wrong way. -11dBu is the quietest setting. the larger the number numerically the more trim you're dialing in. The EX series cameras come with a default trim setting of -41 dBu.

- Don

Don Greening
Reeltime Videoworks
http://www.reeltimevideoworks.com


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Steven Gladstone
Re: Mic Pre-amp
on Feb 15, 2011 at 9:15:20 pm

You would think I would have just naturally checked that.

I feel so silly.

Thanks.

oddly enough though, the manual says it goes to -8udb, but I'm not seeing that, just -11udb.

Firmware 1.20 and now 1.25

Steven Gladstone
http://www.gladstonefilms.com


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Don Greening
Re: Mic Pre-amp
on Feb 15, 2011 at 11:34:22 pm

[Steven Gladstone] "oddly enough though, the manual says it goes to -8udb, but I'm not seeing that, just -11udb."

Yeah I just checked mine and it reads the same: only goes to -11 dBU

- Don

Don Greening
Reeltime Videoworks
http://www.reeltimevideoworks.com


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Steven Gladstone
Re: Mic Pre-amp
on Feb 16, 2011 at 1:59:43 am

[Don Greening] "Yeah I just checked mine and it reads the same: only goes to -11 dBU"


I just know there is some kind of "Spinal Tap" joke here. Maybe the Sony engineers actually do have a sense of humor.

Steven Gladstone
http://www.gladstonefilms.com


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Don Greening
Re: Mic Pre-amp
on Feb 16, 2011 at 5:34:18 am

[Steven Gladstone] "Maybe the Sony engineers actually do have a sense of humor."

Sony? Humor? Same sentence? I'm a frayed knot.

- Don

Don Greening
Reeltime Videoworks
http://www.reeltimevideoworks.com


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Bob Cole
Re: Mic Pre-amp
on Feb 19, 2011 at 2:34:24 am

This was a timely post for me. I just used a Tram on my EX1R (with +48v phantom supplied by the camera), and even with fairly high (low) trim, the audio has a slightly noisy floor. Acceptable, but not perfect. I didn't test using the little battery in the Tram's own pre-amp barrel.

I recommend, and when possible will probably use, line level on the camera and in line with the Tram, a Sound Devices pre-amp (MM-1). It is CLEAN. The difference is remarkable.

Did the correct trim setting in the camera fix your problem? If so, what trim setting did you ultimately find solved it?

Bob C


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Don Greening
Re: Mic Pre-amp
on Feb 19, 2011 at 6:03:08 am

Bob,

Just a reminder that anytime you use the line setting on the EX1, EX1R or EX3 you won't be able to adjust the trim level in the camera's menu. Sony assumes you'll be adjusting the trim using an outside source.

- Don

Don Greening
A Vancouver Video Production Company
Reeltime Videoworks
http://www.reeltimevideoworks.com


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Bob Cole
Re: Mic Pre-amp
on Feb 19, 2011 at 6:08:02 am

Correct - in the menu, the trim is grayed out, which is a nice confirmation that you're on Line In.


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