time all analog phase sweep between zero and
one hundred and eighty degrees.
mics to be placed where they sound best individually;
compromising mic placement due to phase problems
is not necessary when using the ibp.
XLR balanced input and outputs.
super quality active transformer isolated
line level direct box.
capability for bringing +4dB line level signal
to guitar level.
instrument level output for driving long guitar
splitting between two instrument amps with
transformer isolation and phase sweep. Four
IBPs fit in a single rack space.
quality construction. Made in the U.S.A.
Little Labs IBP (in-between phase) analog phase-alignment
tool tackles previously unaddressed problems
faced daily in recording sessions. The IBP was
designed to help engineers effectively eliminate
the undesirable hollow sound when combining
out-of-phase and partially out-of-phase audio
signals. The IBP will allow engineers to put
an audio signal in phase, when the console polarity
button will not. Whether combining direct and
miked signals, drum kit tom-tom mics, multiple
split-guitar amps, top and bottom snare, or
the classic acoustic guitar and vocal mic phase
problem, audio signals will be put in phase
quickly and easily with the Little Labs IBP
analog phase-alignment tool.
The Little Labs IBP combines real-time, line-level
phase control with audiophile quality. Additionally,
its selectable instrument input stage utilizes
the super-fidelity circuitry of the well respected
Little Labs Multi Z DI and PCP Instrument Distro.
Simply used as a direct box, the IBP allows
a bass player to walk into a session, feed the
console desk line level and send a buffered
guitar signal out to the bass amp. When levels
are brought up to the desk, the bass player
himself can tweak the IBP phase-adjust putting
the miked and direct tracks in phase. Producing
a solid in-phase bass sound with the IBP is
The IBP can also re-amp, bringing your +4dB
line level signal to guitar level, with or without
phase adjustment. Furthermore, the IBP using
the instrument in, buffered out, and re-amp
out simultaneously, will work as a guitar splitter
with one output phase adjusted for creative
summing and cancelling between guitar amps.
IBP functional Description:
Line/instrument selects between the line level
xlr input on the rear (unity gain) and the instrument
input on the front (hi Z 10M with gain) for
using as a direct box.
Earth lift lifts the ground (pin 1)of the output
Phase adjust bypass removes all phase adjust
circuitry and allows you to use the IBP without
phase adjust, as an active DI or when using
the line input, a transformer isolated line
Phase invert is a simple polarity reversal as
you would find on a mixing console: out is 0
degrees, in is 180 degrees.
Phase adjust 90 degrees /180 degrees selects
between two stages (button out) or one stage
of phase adjust. This allows a more extreme
phase adjustment with a full swing of as much
as 180 degrees or a less extreme 90 degrees
of phase adjustment.
Phase center lo/hi selects between a higher
bandwidth phase adjust (button out)and a primarily
lower frequency phase adjust (button in). This
and the phase adjust button create the phase
curve. It is important to note phase is frequency
dependent and is different than time. For example
depending on the two sources you are combining,
and whether one source is direct and one is
miked- between room reflections distance from
the cabinet etc. determines what the curve would
need to be. (e.g. you need to get the G note
in phase as well the A note).
Phase adjust knob determines the degree of phase
On the rear of the unit you have a re-amp instrument
level out. It (when line level is selected)
brings the +4dB balanced signal down to instrument
level. This output is affected by the phase
adjust when selected. When instrument is selected,
the re-amp out is an instrument level output
that is affected by the phase adjust (and can
be used in a stomp box type mode). The level
trim for the re-amp can be reached with a standard
On the rear of the unit there is a buffered
instrument out which follows the instrument
input and is designed for running long guitar
cables. This output is unaffected by the phase
The xlr balanced input is designed for balanced
line level sources, the xlr output is transformer
isolated and can feed balanced or unbalanced
line level inputs.
The gain trim for the d.i. can be reached with
a standard trim tool and can be set from 12
to 26 db of gain.
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