Speck Electronics MicPre 5.0 - Manual (Page 22)

Front Panel Controls
This 11 position rotary switch adjusts the mic gain in 5dB steps
from +10dB to +60dB. When the Mic/DI switch is selected for
D.I., the gain range is from -10dB to +40dB in 5 dB steps.
The trim control provides -10dB to +10dB of continuous
adjustment with a center detent of 0dB. A total gain of 70 dB is
available when the Gain adjust is set to 60, the Trim is set to +10,
and the -20 Pad is disabled.
This switch will select the microphone Input on the rear panel or
the ¼” D.I. input jack on the front panel. A yellow LED indicates
the operation of the D.I. input jack.
This Direct Input (D.I.)
jack will accept a
balanced or unbalanced
input signal and is
selected when the
Mic/DI switch is
depressed. This input
may be used for
electric guitar, bass, or
keyboards.
When this switch is
depressed, the
microphone input signal is reduced by 20dB. The D.I. input is
unaffected by this switch.
Application: There may be occasions when the minimum gain
settings (10 on the gain switch and -10 on the trim) is just not low
enough. This can happen when the mic is producing a very high
output.
1. Gain switch
3. Mic/DI select
5. 20dB Pad
2. Trim control
4. D.I. input jack
D.I.
10
15
60
0
10 + 10
_
D.I.
20
25
30
35
40
45
50
55
Gain Trim
-20 48V MIC
D.I.
10
15
60
0
10 + 10
_
D.I.
20
25
30
35
40
45
50
55
Gain Trim
-20 48V
1 2
4 3 5 6
Chapter 3 Operation Section 16