Operation; Front Panel Controls; Gain Control; Phantom Power - Grace 801 Owner's Manual

Thank you for purchasing the Grace design model 801 microphone
preamplifier. It is built to be completely reliable and easy to use. However, there
are some important instructions included in this manual. Please take the time to
familiarize yourself with the installation and operation of the unit and most
problems will be avoided. Regardless of what sources you plan to record, the
model 801 will be the invisible link between the microphone and recorder.
Grace Design has been building professional audio products for the
recording industry for over ten years. During this time the model 801 has
evolved through a process of extensive listening, testing and refinement. We
hope it helps you achieve a new level of excellence.

1. OPERATION

A. FRONT PANEL CONTROLS

GAIN CONTROL

PHANTOM POWER

PHASE REVERSE
MEMO STRIP
1. GAIN CONTROL Each gain control has 24 positions and adjusts the
voltage gain from 18dB to 64dB in 2dB steps. For reference, the 9
o'clock position is 30dB, the 12 o'clock position is 42dB, and the 3
o'clock position is 56dB.
2. PHANTOM POWER The phantom power switch (labeled 48V)
connects the +48V power supply to pins 2 and 3 on the XLR input
connector. This switch illuminates red. It should be noted that the
LED in this switch actually monitors the voltage at the input. With no
microphone connected, the LED will continue to illuminate for
approximately 10 seconds after the phantom power is turned off as the
PEAK INDICATOR
- 2 0
4 8 V O 4 8 V O
20dB ATTENUATOR
Figure 1. Front panel controls
Page 2
- 2 0 4 8 V O - 2 0
4 8 V O - 2 0