The maximum level that you can feed into this input is not defined be-
cause a transformer doesn't clip, but NOTE: It is not designed for high
level, high current, speaker signals.
redeye 3D phantom
instrument / re-amp out and level trim
This is the high impedance instrument output on the front of
the Redeye 3D. This is in DI mode the "thru" to the amp. In re-amp
mode this is your re-amp output to the amp. The adjacent instrument/
re-amp level trim works as an attenuator just like the volume control on
your guitar and works in the thru and the re-amp out mode.
When using the active buffered instrument input this output
in DI mode will be very close in level to what is plugged in, in other
words it passes thru the Redeye 3D with approximately unity gain. I
say approximately because depending on the amp it is plugged into
it might have a little more or a little less, but it should be close. You
can internally set this by moving a jumper to +3dB of gain instead of
unity, but most guitar players like unity gain so it's just like plugging
directly into the amp. See the DIY section if you want that extra 3dB.
When using the unbuffered instrument input this output in DI
mode will be -3dB from what is plugged in, so in other words you lose
a small amount of level. If you attempt to use this on a passive pick up,
it will seem like more because of the combination of loading the pick
up and this small level loss. The 3dB loss is due to travelling thru the
internal electronics passively.
redeye 3D phantom
re-amp overdrive
This button when engaged gives you an extra 10dB on the
instrument/re-amp out, but only in re-amp mode. This can be useful
when you recorded the track low, or you find even when hitting the
recording aparatus at a healthy level, your particular instrument has a
very high output and you need it to hit the amp harder. Metal heads will
like this.
redeye 3D phantom
earth lift & re-amp polarity
The earth lift button should be engaged when you have ev-
erything hooked up, and you hear a hum in your amp or what you are
recording. The hum is caused by a ground loop where more than one
path to ground allows a current to flow between the grounds. If this
hum doesn't know the song, it must be eliminated.
Re-amp polarity or on some devices called a phase switch
makes the signal push instead of pull or vice versa. It only works on
the instrument level re-amp out. You might not notice much of a dif-
ference when you push it. Where it really comes in handy is when you
use the expansion in and out jacks with multiple redeye 3Ds feeding
multiple amps. When different amps sound is combined in air or when
miced and recorded, some amps push some pull and a much fuller
sound is heard when they work together, all pushing or all pulling.
This button allows you to easily make the amps work together. If you
really want to get deeper into this polarity and phase thing, check out a
Little Labs IBP!
redeye 3D phantom
mic level male xlr out
This is the output of the DI section of the Redeye 3D Phantom, what
comes out here is a lo impedance (500 ohm) balanced signal approximately
18dB below what is plugged into the instrument inputs. It should be plugged
into a microphone preamplifier and if you are using the active buffered
input the microphone preamplifier should have phantom power engaged.
Understanding gain structure in recording is important. Keep
in mind a passive pick up guitar puts out anything from -10dB to -25dB.
Going thru a mic level direct box like the Redeye 3D drops this level
by another 18dB so you need a microphone preamplifiers gain set any-
where from +32dB to +47dB to get a +4dB (0VU) line level signal. Pop
quiz later....
