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Auto EQ Troubleshooting
A. An error message will appear if the volume is too low. Fix this by –
1. Make sure that the provided microphone is securely plugged into the rear of the APA1200DSP, and
that the microphone is securely attached to the extension cable.
2. Check the microphone and microphone cable for damage.
3. Increasing the volume using the provided slider
4. If you do not hear the test signal after pressing “start position 1”, re-check your connection between
the subwoofer and the APA1200DSP. Make sure that the subwoofer is connected in bridge mode
and the UI is set to “SUB”. In rare cases, power cycling the APA1200DSP by flipping the power switch
off and then back on after a few seconds might help.
B. The correction is not satisfactory or does not sound right.
1. Make sure you are using the microphone that was included with the APA1200DSP and it is free of
obstruction or damage.
2. If you do not have your mains (full range speakers) high passed (prevent them from playing their
own bass), the bass coming from your mains and from your subwoofer could combine in an unde-
sirable way. The auto EQ algorithm cannot account for the bass that is coming from your mains.
3. Try taking measurements at a higher volume or lower volume. You might be overdriving your sub-
woofer if the volume is too loud, or under-driving the subwoofer, which could result in misrepresen-
tative measurements (especially in a larger room).
4. Take your measurements at different positions. If you took your measurements clustered together,
try taking them over a larger area. If you used a large area to begin with, try taking measurements
closer to a desired listening position instead.
5. Make sure that you do not have other EQ or filter settings enabled that negatively affect the sound
of your subwoofer. Although EQ for subwoofers is very powerful, some issues cannot be corrected
with EQ. You might need to physically move your subwoofer, upgrade the subwoofer, or modify
your room physically to achieve the results you want.
6. Try modifying the delay function in the GUI of the APA1200DSP. This can have great results in the
combination of sound of your main speakers and your subwoofer by acoustically aligning them.
C. Although room correction is powerful and can help to smoothen poor bass acoustics in a room, it cannot
fix all problems, and cannot make a subwoofer better than it is (but it can help maximize its potential!)
