6
1.4.2 Microphone Input (XLR or
¼
” TRS)
The microphone input accepts a mic-level signal. Mic level signals are
generally very low in voltage around a couple of millivolts or 1000
ths
of a
volt. The job of the mic preamp is to increase the mic-level signal by up
to 75 dB to be line level, which is between 1 and 2 volts.
1.4.3 Line Input (XLR or
¼
” TRS)
The line input accepts a line-level signal, not a mic level or
instrument level signal. You can connect to the input of your
preamp with an XLR cable or a
¼
” TRS cable.
This jack is not expecting a microphone-level signal and definitely
not a speaker-level signal!
Plugging a speaker level signal into your Mic Pre IV may blow it
up. This signal is far too hot to work properly with your preamp.
1.4.4 Line Output (XLR)
The output signal from your preamp comes from here. If you are
connecting your preamp to a patch bay on a console instead of a line XLR
input on another piece of gear, you will want to purchase (or make) a
female XLR to male
¼
” TRS adaptor cable to make this easier. The
output signal is line level, not
1.4.5 Power supply Connection
mic level, so patching it into a mic pre-amp
afterwards is unnecessary and probably will just cause problems.
The jack is where you connect your external 48V DC power supply.
1.5 Front Panel