DL107, DL207 and DL210 2.0 Digi-Loop™ DSP Induction Loop Amplifiers
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4. Equalize other frequencies to match the calibration point.
Make sure the switches on the field strength meter are in same position as they were for calibration.
A674
Step b
Bass=100 Hz,
Mid=500 Hz,
Treble=2500 Hz,
Metal Comp=5000 Hz
Step c
Return to the Calibration Window
and set the test tone for 100 Hz
(the first frequency to be equalized).
Step d
Return to the Effects Window
and adjust theEQ volume (dB) until
the field strength meter reads 0 dB.
Step e
Repeat Steps c & d for the next frequency,
(i.e. 500 Hz). Repeat c & d until each of the
frequencies have been equalized to 0 dB.
Step a
Open the
Effects Window
a. Open the output EQ settings by clicking on the FX button in the Calibration Window.
b. Set 4 equalizer frequencies, Bass=100 Hz, Mid=500 Hz, Treble=2500Hz, Metal Comp at 5000Hz.
c. Return to the Calibration Window and set the test tone to 100 Hz. The amplifier is now generating 100 Hz in the loop.
d. Go to the Output Effects Window and adjust the dB level until the field strength meter reads 0 dB. The loop is now equalized for 100 Hz.
e. Repeat steps c & d for the next frequency (i.e. 500 Hz) and continue until each of the frequencies has been adjusted to 0 dB as measured by
the field strength meter.
5. Test with an appropriate audio source
(DO NOT USE an external test tone generator).
a. Connect a source such as an MP3 player or smartphone to the Line 1 input.
b. With music playing, observe the Loop Output VU meters on the PC App. They should be peaking around 0 dB.
c. If the output level is not sufficient, adjust the Source Volume up.
d. If the output level is still not sufficient, adjust the Input Slider up.
e. If the output is still not sufficient, or if the performance is too dynamic, go into the Output Effects Window and adjust the AGC level up to about
5.
DO NOT go back into the calibration window and adjust the level. This will take the amplifier out of calibration!
