Is the effects rack running at 48K on this supposed 96K console?

SQ SQ General Discussions
1

A strange observation.

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We had the analyser running through the console last week and the main output was truncated at 24KHz when normally it is clean to 48KHz (being a 96K desk we would expect up to 48KHz audio response)
It turns out it was the dynamic EQ plug-in that was truncating the frequency response to 24KHz.
I then put any rack effect in the main L-R insert and when in line all rack effects truncate the usual 48KHz audio response main output down to 24KHz audio response.
Is this the FX rack running at 48KHz sample rate? (It sure looks like it is)

The DEEP plug-ins on the channels (compressors) do run at 96K and do pass all the way up to 48KHz, so it just seems to be the FX rack that is running at 48K.

Now Allen and Heath sell this desk as having 96K processing, but it sure looks like the FX rack is running at 48K.
Are A&H mis-selling the desk as having 96KHz processing, or is this some form of technical oversight?

Has anyone else noticed this?

Do Avantis and D-Live do this too???

I’d love to hear what A&H have to say.

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2

I Always wondered, why the Sound is soooo Bad…

I am mostly doing Jobs for bats, so this would be a real Problem…

3

UPDATE
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We have found that if the FX rack is running an insert on a mono channel strip the response is good to 48KHz (running at 96K), but the same insert on a stereo channel is only good to 24KHz (running at 48K).

So it seems that it is an issue of whether the plug-in is stereo or mono.

4

Wow - thanks for that clarification!
I’m very glad to know this, so I guess I’m ok since all my DynEq4’s are running on mono channel inserts.

And yeah, I see your photos are DynEqs on stereo channels during your tests. Glad to know it won’t be a problem for me, since I use them on the mono channels, and really find those DynEqs and their associated PEQs to be really useful!

5

Can you do one more measurement for me?

Can you try to do the same you did, i mean - insert FX to stereo channel then perform a measurement then restart the sq console, check if the insert is still there and perform a measurement again?