Rane | PE 17 | Data Sheet | Rane PE 17 Parametric Equalizer Data Sheet

Rane PE 17 Parametric Equalizer Data Sheet
PE 17
General Description
The PE 17 Parametric Equalizer/Notch Filter advances the
features and performance of the popular Rane PE 15 Parametric Equalizer design. The PE 17 adds separate In and Out
Gain controls, sweepable Low and High Cut Filters, 100%
overlapping bands, and improved dynamic range and noise
performance. Aimed at all critical applications, including
digital audio recording studios, the PE 17 stands alone as the
parametric of choice for sound professionals. Special design
techniques and components used in the design of the PE 17
guarantee residual noise levels below digital recording
equipment. This makes the PE 17 ideally suited for all critical
digital audio studio, sound reinforcement and broadcast
The adjustable band limiting Filters offer great appeal in
tailoring each sound systems overall frequency response
exactly to its application. The range of the Low Cut is 10 Hz
to 250 Hz, while the High Cut is 3 kHz to 40 kHz. Both have
maximally flat 12 dB/octave Butterworth responses.
All five parametric bands are identical and offer 100%
overlap. This allows the PE 17 to be configured one time as a
5-band subwoofer parametric equalizer, with all bands
covering the range of 10 Hz to 200 Hz, and another time as a
high frequency unit, with five bands covering the range from
1 kHz to 20 kHz, or yet another time, with each band covering five separate parts of the audio spectrum — anyway you
want it. Additionally, you may vary each filter’s bandwidth
from as narrow as 1/30 of an octave to as wide as two
octaves, and adjust the Level over a boost/cut range of
+12 dB to -15 dB. The extra-deep cut range, when used with a
narrow Bandwidth setting, is effective against troublesome
feedback frequencies. Specially designed circuits make all
these adjustments completely independent. To you, this
means the ability to change all controls in any order without
affecting the others. This flexibility makes the PE 17 ideal for
all audio contouring applications. Anything from the sharpest
notch to widest contouring.
Individual Bypass switches and LED indicators allow
separate auditioning of each band. An overall Bypass relay
provides for “hard-wiring” the Input connectors to the Output
connectors anytime the Bypass switch is activated or upon
power failure, thereby ensuring a fail-safe condition. Other
front panel features include a system Overload light that
continuously monitors five critical internal nodes, a Power
indicator, and separate ±12 dB Input and Output Gain
The PE 17 rear panel provides XLR and ¼" TRS connectors. The balanced Input stage design uses a precise instrumentation amplifier to provide superior common-mode
rejection of unwanted signals. The balanced Output stage uses
a member from the “cross-coupled” family of high current
line drivers. With this design extremely long lines may be
driven with impunity.
A single ¼" Patch I/O jack, wired in the conventional
tip=in/ring=out manner provides a convenient method to
patch the PE 17 into console insert points (wired: tip=send/
ring=return) using only a single stereo (TRS) cable.
120 dB (20-Bit Equivalent) Dynamic Range
Separate ±12 dB Input/Output Gain Controls
Separate Sweepable Low & High Cut Filters
Five Fully Parametric Bands with 100% Overlap
10 Hz-20 kHz Filter Frequency Sweep
.03 TO 2.O Octave Variable Bandwidth
+12 dB/-15 dB Boost/Cut Range
Overall and Individual Band Bypass Switches & Indicators
Multipoint Overload Monitoring Indicator
Automatic Fail-Safe Bypass Relay
Balanced XLR & ¼" TRS Connectors
Handy Patch I/O Jack for Insert Point Use
UL/CSA Remote Power Supply (120V)
CE (Low Voltage & EMC) Remote Power Supply (230V)
Data Sheet-1
PE 17
Features and Specifications
Equalizer: Bands
Inputs: Type
..........Balanced Impedance
..........Maximum Level
..........Common Mode Rejection
Outputs: Type
..........Balanced Impedance
..........Maximum Level
In & Out Gain Range
RFI Filters
On/Off Transient Muting
Fail-safe Bypass Relay
Overload LED Threshold
Variable Low-Cut Filter
Variable High-Cut Filter
Frequency Response
Dynamic Range
Signal-to-Noise Ratio
Unit: Agency Listing
..........120 VAC model
..........230 VAC model
Power Supply: Agency Listing
..........120 VAC model
..........230 VAC model
..........100 VAC model
Power Supply Requirement
Maximum Current
Unit: Construction
Shipping: Size
Note: 0 dBu=0.775 Vrms
Data Sheet-2
Full Parametric
Boost: +12; Cut: -15
.03 to 2.0 Octaves
10 Hz to 200 Hz
100 Hz to 2 kHz
1 kHz to 20 kHz
Active Balanced
XLR & ¼" TRS
Active Balanced
XLR & ¼" TRS
+22 _
>600 ohms
10 Hz-250 Hz, 12 dB/Octave
3 kHz-40 kHz, 12 dB/Octave
20 Hz-20 kHz
re +4 dBu, 20 kHz Noise BW
Minimum phase design
Continuous sweep
Freq Sw: x.1
Freq Sw: x1
Freq Sw: x10
True instrumentation amplifier
Boost/Cuts centered, unity gain
National Electrical Code
Exempt Class 2 Equipment
EMC directive 89/336/EEC
Article 1 of LV Directive 73/23/EEC
Class 2 Equipment
File no. E88261
File no. LR58948
EMC Directive 89/336/EEC
LV Directive 73/23/EEC
Japan only
Rane RS 1
RMS Current From Remote Supply
Class 2 Equipment
CE-Safety Exempt
Built to JIS
18 VAC w/center tap
All Steel
1.75"H x 19"W x 5.3"D (1U)
5 lb
4.25" x 20.3" x 13.75"
9 lb
Equal CM and DM impedance
20-1 kHz, rising to 50 dB @ 20 kHz
Servo cross-coupled design
Auto-bypass with power loss
Output or any internal level
+4 dBu, 20-20 kHz, 80 kHz BW
Noise floor-to-clipping into _
>2k ohm
(4.4 cm x 48.3 cm x 13.5 cm)
(2.3 kg)
(18 cm x 56 cm x 33 cm)
PE 17
Block Diagram
Application Information
If you are familiar with any parametric equalizer, you will
find the PE 17 very friendly, and quite easy to operate. Only a
few things need discussing.
One of these, is the fact that you can not use the Patch I/O
jack and the main jacks at the same time. This is an either/or
situation: either use the Patch I/O jack or use the main jacks.
Similarly, you cannot use both of the Input jacks at the same
time; they do not sum. Make a choice. Do not use them to
mix two signals. It won’t work.
The Output jacks, on the other hand, may both be used, if
you need them. So. Driving two things is okay; summing two
things is not. Enough.
For optimum noise performance, you should take as much
gain at the Input as you can, with a corresponding reduction
at the Output. This is done by moving both Gain sliders
upward. Note that the In control is calibrated top-to-bottom
+12 dB to -12 dB, while the Out control is calibrated just
opposite. Thus, by moving both sliders together, you always
maintain unity gain through the Equalizer, but you vary how
much gain/attenuation occurs at the Input or Output of the
unit. Therefore, by operating the unit with both sliders as high
as possible, you take a lot of gain up-front, while simultaneously reducing the signal (and noise) at the Output. Use the
Overload light as a guide: occasionally lighting is set just
right. Continuously lighting is too much gain, while never
lighting is too little gain.
There are parallel Parametric designs (PE 15) and there
are serial Parametric designs (certain others), then there is the
PE 17, which is (of course) a parallel and serial design. (We
DON’T like life simple!)
Referring to the block diagram above, you can see that
Bands 1, 2 and 3 are arranged in a parallel fashion in series
with paralleled Bands 4 and 5. This unique topology offers an
optimum combination of the minimum phase shift and delay
times of parallel designs with the extreme cut or boost
settings available from series designs. So keep in mind that
for extreme boost/cut settings use two Bands in series (e.g.,
Bands 3 and 4), that way, their dB boost/cut values directly
add. For example -15 dB on both results in a total of -30 dB.
For parallel bands, their boost/cut dB values do not directly
add. We know this is confusing, but so is the rest of life!
Data Sheet-3
PE 17
Rear Panel
Architectural Specifications
The parametric equalizer/notch filter shall be designed for
digital audio recording applications with a minimum dynamic
range of 120 dB and a signal-to-noise ratio of at least 98 dB
re +4 dBu (20 kHz noise bandwidth).
The parametric equalizer shall be a one (1) channel, five
(5) band unit with variable low-cut and high-cut filters, and
be designed for rack-mounting requiring only one (1) rack
Separate bypass switches with LED indicators shall be
provided for each band. Each band shall have separate
controls to sweep frequency over a 20:1 range (with a 3position range switch), adjust bandwidth from .03 to 2.0
octaves and set amplitude control to a maximum of +12 dB
boost and -15 dB cut. Overall input and output gain controls
shall be included with a range of ±12 dB.
The inputs shall be active balanced/unbalanced designs
terminated with XLR and ¼" TRS (tip-ring-sleeve) connectors. The outputs shall be active balanced designs terminated
with XLR and ¼" TRS connectors.
RFI filters shall be provided. The unit shall provide a
bypass relay feature wired for fail-safe operation upon power
failure. An LED shall be provided to indicate overload
The unit shall be powered from a UL listed, CSA and CE
certified external AC power supply. This external supply shall
be provided with each unit and be available with either a 120
VAC or a 230 VAC primary. The unit shall be entirely
constructed from cold-rolled steel.
The unit shall be a Rane Corporation Model PE 17.
Available Accessories
• SC 1.7 Security Cover
©Rane Corporation 10802 47th Ave. W., Mukilteo WA 98275-5098 TEL (425)355-6000 FAX (425)347-7757 WEB http://www.rane.com
Data Sheet-4
All features & specifications subject to change without notice. DOC 103052 PN 08150 AUG98
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