Aphex 1788A Premium Eight Chan Mic Pre - Manual (Page 9)

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MICROPHONE PREAMPLIFIER
Page 9
Instruction Manual
2. QUICK START
to your equipment and that our MIcLim protection will indeed protect
you from clipping your gear. If you don’t know the MIL of your input,
then use your mixer or recorder’s meters to indicate full scale input.
Simply adjust the 1788A’s Main Output Gain to get just under a full
scale reading. When done, tap the TONE button to kill it.
NOTE: If completely in doubt, simply set the output level to a number
that is 20dB above your 0dB reference level. If +4dBu, set it to
+24. If -10dBV (equal to approx. -12dBu), set it to 8.
7. Give the microphone some sound and monitor the Headroom
meter in the Channel Status Readout. Select Input Gain with the
GAIN SELECT button and adjust the input gain so that the peaks fall
approximately between 12dB and 6dB of headroom.
8. If the input gain is set at its lowest setting (26dB) and the level is still
too hot, use the 26dB PAD.
9. To test the MicLim protection, select ENABLE LIMITER. You will
easily verify that it’s working on loud shouts. Try shouting into the mic
with the Limiter on and off to see the difference. With MicLim on, you
will be able to safely run higher gain and level without fear of clipping
on loud sounds.
10. When mic’ing a vocal, the LOW CUT 75Hz function will provide
pop protection. For deepest musical bass when mic’ing an instrument,
you’ll probably want to leave it off.
11. You can monitor your mic channel with headphones on the front
panel. Turn down the phones volume, plug in the phones. Press the
Monitor Channel Select until 1 appears and adjust the volume to
suit. Now you can hear channel 1 in high fidelity.
12. Running remote control will require additional instructions that are
covered in the separate Remote Control Manual.