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1.
Phazer Phase Curves
The following phase curves detail how the
Phazer will affect the signal. As you look
at these curves, you will notice that the
phase response is not linear. This is what
makes an analogue phase tool completely
different from a digital delay. The Phazer
actually applies a phase shift on the high
frequencies first, and then as you increase
the phase shift, the low frequencies become
affected. The result is, in a word, musical.
(click graph to view larger)
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Mauve
- Shows the direct response when the
phase effect is bypassed. Note the Phazer
has a true-bypass - thus the perfectly
flat response |
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Cyan -
Shows the curve when the phase control
is set with minimal phase shift. Note
the phase effect is only applied on
the high frequencies |
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Yellow
- Shows the curve when the phase control
is set to approximately 50% of phase
shift. The phase effect is applied to
both the mids and highs while retaining
the lowest fundamental intact |
 |
Green -
Shows the curve when the phase control
is set to maximum 180º phase shift.
Note the phase effect is applied to
the whole signal with 130º of phase
shift at 20Hz and 180º of phase
shift on the rest |
 |
Blue, Red,
Pink - show the same three response
curves but add 180º to the effect
when the output polarity switch has
been engaged. This allows the user to
extend the effect to a full 360º |
2. Competitor phase curves
This graph shows the phase effect from a
Little Labs™ IPB™. It is important
to note that the Little Labs is an excellent
product and very well designed. It employs
a series of op-amps to achieve its response
curves while the Phazer employs a class-A
approach. Both are good and our comments
are not meant to undermine the IPB in any
way, only to show the differences and why
we chose to do what we do.
 (click
graph to view larger)
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Red
- Not totally flat due to the always-on
buffer. But very good none the less.
The Phazer bypass is what one would
call true-bypass |
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Yellow
- Shows the curve when the phase control
is set with minimal phase shift. Note
the phase effect is only applied on
the high frequencies, just like the
Phazer |
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Green -
Shows the curve when the phase control
is set to approximately 50% of phase
shift. The phase effect is applied to
both the mids and highs while the lowest
fundamental remains intact, just like
the Phazer |
3. Phazer Filter Curves
The graphs below shows the effect of the
low-pass filter at the -3dB down point.
These 12dB per octave curves are applied
when the filter range select switch is out.
The bottom image shows the same curves when
the filter range switch is engaged. The
effect is basically moved up 10 x for a
less dramatic effect.
LOW range:
HIGH range:
(click graphs to view larger)
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»
Click to view the Phazer product 'SmartSheet'
pdf (107kb)
Features
and Functions
The Phazer is intuitive and very easy to use.
It is most often connected using insert jacks
on a channel of the mixing console, but may also
be used in-line from a mic preamplifier or any
other line level source. The Radial Phazer is
made up of two completely independent circuits:
the phase adjustment controls on the left and
the low-pass filter controls on the right. These
can be used independently or together depending
on the desired results.
The phase alignment section features three controls:
an on-off switch that lets you audition and compare
the phasing effect when engaged or when out of
circuit, an invert switch that extends the phase
range from 0º--180º to 180º--360º
and the shift control that is used to control
the amount of phase shift that is applied to the
signal.
Due to the greater energy and longer wavelengths
found in bass frequencies, you will hear most
of the Phazer’s effects during the first
half of the knob’s rotation. In fact, phase
changes in upper frequencies are often inaudible.
Because of this, we thought that adding a high-cut
filter (low pass) would help eliminate some of
the phase anomalies and better focus the phase
effect where it matters most -- in the bass.
The low pass filter also features three controls.
Because the filter is completely independent,
it can be bypassed using the FILTER on/off switch
which allows you to compare the filter effect
with the original tone. A cutoff range has been
provided that lets you select between 38kHz down
to 3kHz range or from the 3.8kHz down to 300Hz
range. A smooth 6dB per octave (?) filter is applied
which is then controlled via the cut-off knob.
Housed in a 14 gauge
enclosure, the Phazer features an internal I-beam
construction to reduce susceptibility of outside
stress that could torque the circuit board and
reduce long term performance of the switches and
jacks. A protective zone is created with a unique
book-end design that keeps switches and jacks
out of harms way. Finally, a full bottom no-slip
rubberized pad electrically isolates the Phazer
and keeps it from sliding around.
| Phazer
Specifications |
|
| Circuit: |
Class-A, 100% discrete components |
| Inputs:
|
1/4" & XLR 10K ohm both balanced |
| Outputs:
|
XLR 600 ohm balanced & 1/4" 1K
ohm unbalanced |
| Connectors:
|
XLR female input, XLR male output AES standard
pin-1 ground, pin-2 hot, ¼” (TRS
- balanced), (TS - unbalanced) |
| Ground
Lift: |
Lifts pin 1 on the XLR output |
| Phase
Shift: |
0º to 180º degree control - w/Phase
Reverse switch on - 180º to 360º |
| Low
Pass Filter: |
Variable from 300Hz to 3KHz and from 3KHz
to 30KHz |
| Polarity
(electrical): |
Reverses pins 2 and 3, extends phase shift
from 181º to 360º |
| Bypass: |
True-Bypass with relay |
| Power
supply: |
15VDC 400mA
power supply included |
| Construction:
|
14 gauge steel chassis and outer shell,
baked enamel finish |
| Size:
|
5.8"w x 3.8"d x 1.8"h
(147mm x 96.5mm x 46mm) |
Weight:
|
1.75 lb (0.82kg) |
| Warranty: |
Radial 3-year, transferable |
|
| Power
Supplies |
|
Power
supply: 15VDC 400mA, center
pole positive
Part
# R800 9407 00 - 120 volt - USA, Canada,
Taiwan
Part # R800 9407
01 - 230 volt - Continental Europe
Part # R800 9407 02 - 230
volt - United Kingdom
Part
# R800 9407 03 - 100 volt - Japan
Part # R800 9407 04 - 240
volt - Australia
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