Allen and Heath Sq5 article
Common Allen and Heath Sq5 Mistakes to Avoid
Layer confusion, gain mistakes, ignoring scene recall and running old firmware — here are the SQ-5 errors that cost engineers the most time.
Most operational problems with the SQ-5 come from a small set of recurring mistakes. These are not obscure edge cases — they are the errors that appear repeatedly when engineers who are new to the desk bring habits from other platforms or skip the foundational configuration steps. This guide identifies the most common ones and explains how to avoid them.
Ignoring Layer Organisation
The Allen and Heath SQ5 has 25 faders and 48 input channels. Without deliberate layer organisation, the desk becomes difficult to navigate under show conditions. The mistake is loading inputs without planning which channels appear on which layer, resulting in constant layer switching during performance. The fix is to plan layer assignments before the show: inputs 1-24 on layer A, FX returns and group masters on layer B, DCA masters on layer C. Write it on a cue sheet until the layout is memorised. Ten minutes of planning removes most operational confusion during the show.
Incorrect Gain Structure
Running insufficient gain at the preamp stage and compensating at the fader is a common pattern. The SQ-5's preamp gain range is generous; use it. A channel running -30 dBFS at the preamp stage and compensated by a high fader position has more noise floor contribution than the same channel set to -18 dBFS with a lower fader position. Set gain during soundcheck with the source performing at show level, not maximum possible output. This single habit improvement resolves most mix clarity problems.
Not Using the Scene System
The Allen and Heath SQ5 stores complete console states as scenes including channel names, gain, EQ, dynamics, routing, mix levels and FX parameters. Engineers who do not use scene recall repeat the same configuration work manually at every show. This adds time, introduces errors and means the desk never carries forward improvements from previous sessions. The fix: save a scene at the end of every successful soundcheck. Name it by date and event. Over time this builds a library that makes setup progressively faster and more consistent.
Misunderstanding Insert Points
The SQ-5 supports soft patch inserts — software routing that sends a channel signal to an output, processes it externally (a hardware compressor, for example) and returns it to an insert point before the fader. The mistake is routing inserts incorrectly or forgetting they are active after a session, causing unexpected signal routing in subsequent shows. Check the patch routing in Menu → I/O Patch before each show if your setup uses inserts. A saved scene captures the routing correctly; use scenes to avoid this class of error entirely.
Running Outdated Firmware
Allen & Heath releases firmware updates that fix bugs and add features. Running a firmware version multiple cycles behind the current release means operating with known issues that have already been resolved. Firmware updates are free, available from the Allen & Heath website and install in under five minutes via USB drive. The Allen and Heath SQ5 page on the Allen & Heath website lists release notes for each firmware version. Check before attributing any operational issue to a hardware limitation — the behaviour may already have been fixed in a recent update.
For setup fundamentals, see our beginner's guide. For a complete overview of the console's capabilities, see our complete overview.
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