EarthQuake SuperNova MKVI Manual - page 12
The proper room correction process involves
correcting the phase and adjusting the equalization.
This process requires two (2) people, one to make the
adjustments to the amplifier and another at listening
spot with a testing microphone or an SPL meter.
Step 1. Place the subwoofer at the preferred location
in the room.
Step 2. Have the person holding the testing
microphone or SLP meter sit on the theater
seat/sofa.
Step 3. Load “White Noise Disc” or 50Hz continuous
tone.
Step 4. With the amplifier’s phase delay and shift
both set at 0, measure the SPL.
Step 5. Rotate the variable delay until the dB
measure peaks (you will know that it has
peaked when the measurement begins to go
back down). Rotate the knob back to the
peak position.
Step 6. Measure the angle of rotation of the phase
delay knob in approximate degrees or
fractions of a turn.
Step 7. Reset all adjustments to zero (0), flip the
phase shift switch to 180° and redo step 4
through 6.
Choose the setting that has the maximum SPL with
the minimum phase delay.
For example, if you need to rotate the phase delay
about 1/2 of a turn with the phase shift at 0° while you
only need to rotate the delay about 1/4 turn with the
phase shift at 180°, then setting the phase at 180° is
the best setting.
Room Correcting with Your Subwoofer(s)
GAIN 2
12 Supernova MKVI & MKVII Manual
Earthquake Sound Corp. | (800) 576-7944 | www.earthquakesound.com
As previously mentioned, these variable gain
controls are infinite controls that do not have
“starting” and “ending” position. Each click of the
knob equals to 1dB adjustment. One click clockwise
increases the gain by 1dB while one click counter-
clockwise decreases it by 1dB.
To properly set the gain of the amplifier, follow these
simple steps:
1. Turn the gain knob clockwise until the
corresponding clipping LED indicator light up
solid yellow.
2. Turn the gain knob three (3) clicks counter-
clockwise to unclip the amplifier. The clipping
LED indicator will turn off once the amplifier is
un-clipped.
If you need further assistance in setting your gain,
please contact our technical support team:
Gain Setting Your Subwoofer(s)
GAIN 2
GAIN 2
3 clicks
Phase Shift at 0°
Peak SPL at about 1/2 turn
Phase Shift at 180°
Peak SPL at about 1/4 turn
» Best Setting
GAIN 2
PHASE DELAY
0
20ms
PHASE SHIFT
0°
180°
PHASE DELAY
0
20ms
PHASE SHIFT
0°
180°
tech@earthquakesound.com
US Toll Free: 800-576-7944
Fax: 510-732-1095