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Author Topic: Crane Song HEDD calibration.  (Read 3820 times)

Andrew Sweeney

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Crane Song HEDD calibration.
« on: August 08, 2011, 02:15:37 am »

I just have a question about calibrating my new Crane Song HEDD 192.

My system consists of a P.C. with Samplitude 11 running a Lynx LTWO
card with 4 ins/outs clocked via AES from the HEDD.

The HEDD is functioning as my main D/A for monitoring (and my main A/D for tracking).
When mixing down I send the mix through the digital in/out on the HEDD (and it's process)
and then back into the DAW to record on a separate audio track.

The HEDD seems a little quieter through my monitoring setup (ProAc 100's, NS-10's and Avantone Mixcubes)
than the LynxTWO's outs were (those were running on the Lynx's +4bBu setting and have a maximum output of +20dBu).

My question is this:

What strategies would anyone here use to calibrate the HEDD with it's line trims for both it's analog
ins and outs given my setup? I can generate test tones from within Samplitude if necessary. Do I need to calibrate it?
What is the factory default for the HEDD in terms of it's gain settings?

Any help would be appreciated!

rosshogarth

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Re: Crane Song HEDD calibration.
« Reply #1 on: August 08, 2011, 11:42:45 am »

I do recommend contacting Crane Song to find out the factory shipped cal .. prolly -18 but not sure ...
It's been so long since I got mine ...
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The practice of forgiveness is our most important contribution to the healing of the world.

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Andrew Sweeney

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Re: Crane Song HEDD calibration.
« Reply #2 on: August 09, 2011, 04:18:32 am »

Thanks Ross I will. Think you are right it might be -18. It's certainly a great sounding unit though.

Hollis

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Re: Crane Song HEDD calibration.
« Reply #3 on: September 14, 2011, 10:13:24 am »

This is easily found in the manual online, or by viewing tone on the HEDD meters. It's not what you think, it's 12 dB headroom above +4 dBu. This is of course why it's quieter--4 dB quieter to be exact. You may be able to match it to the Lynx via the trim pots, but I'm not sure how far they spin. Also, you should do it with a voltmeter for accuracy.

Regardless, it shouldn't be an issue really. All the loudness is the responsibility of your power amp/speakers.

Here's something to go on: http://www.gearslutz.com/board/high-end/48600-digi-192-calibration-levels.html
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