Crown PIPBP-1-C, PIPBP-1-X Owners manual
P.I.P.–BP1X & P.I.P.
–BP1C
OUT IN IN
PUSH
Programmable
Input Processor (P.I.P.)
©2000 by Crown International, Inc., P.O. Box 1000, Elkhart, IN 465151000 U.S.A. Telephone: 219-294-8000. Fax: 219-294-8329. Trademark
Notice:
trademarks of Crown International, Inc. Other trademarks are the
property of their respective owners.
PIP™ is a trademark, and Crown
CH-2 CH-1
PUSH
®
and
OUT
®
IOC
are registered
GND
12
3
Printed on
recycled paper.
127924-1A
10/00
P.I.P.–BP1X & P.I.P.–BP1C
Page 2
Reference Manual
P.I.P .–BP1X & P.I.P.–BP1C
OUT IN IN
PUSH
Programmable
Input Processor (P.I.P.)
CH-2 CH-1
Fig. 1.1 P.I.P.–BP1X Shown
1 Welcome
Congratulations on your purchase of
Crown’s
PIP™
quickly install in the back of many
Crown amplifiers.
grammable Input Processor.” Each
PIP
pabilities of your amplifier , enabling you
to customize it for your particular
needs.
The
versatile stereo Band-Pass processors that plug into any
Crown amplifier . The
XLR connectors and the
uses a removable barrier block. Each
channel of the PIP is completely independent from the other and combines
the functions of a low-pass filter , a highpass filter , vented-speaker box equalization, horn equalization and
compression.
DIP switches and convenient jumper
blocks make it easy to configure any of
its powerful operating features.
P.I.P.–BP1X or P.I.P.–BP1C
modules are designed to
PIP
stands for “Pro-
has features that expand the ca-
P.I.P.–BP1X and P.I.P.–BP1C
PIP
P.I.P.–BP1X
are
-capable
uses
P.I.P.–BP1C
OUT
PUSH
Features
❏ Variable 24-dB/octave (4th order)
.
Butterworth low-pass filter.
❏ Variable 24-dB/octave (4th order)
Butterworth high-pass filter.
❏ Variable 12-dB/octave (2nd order)
low-frequency filter with Q=2 for
vented box equalization.
❏ Variable 6-dB/octave high-fre-
quency shelving network with variable 12-dB/octave high-frequency
low-pass filter for constant-directivity horn equalization.
❏ Variable threshold, feedback/error-
driven compressor/limiter with infinite compression ratio.
❏ Configurable compressor control
path.
❏ Configurable “daisy chain” outputs.
❏ Balanced 3-pin XLR connectors or
quick-disconnect removable barrier block connectors (depending
on model) for input and daisy chain
outputs.
GND
3
12
Reference Manual
Page 3
P.I.P .–BP1X & P.I.P.–BP1C
Programmable
Input Processor (P .I.P.)
BYPASS
NORM
OUT IN IN
PUSH
CH-2 CH-1
S200
S204
OFF
OFF
S205
12345
678910
S209
12345
678
12345
678
ON
S206
OFF
OFF
S207
12345
678910
12345
678
12345
678
ON
S208
S202
OFF
OFF
12345
12345
678
678
OFF
OFF
12345
12345
678
678
S203
S201
CH1 CH2 CH1 CH2
OUT
PUSH
AI
BABI
3
GND
12
BYPASS
NORM
S108
S106
OFF
OFF
S107
12345
678910
12345
678
12345
678
ON
S104
OFF
OFF
S105
12345
678910
S109
12345
678
12345
678
ON
S102 S100
OFF
OFF
12345
678
OFF
OFF
12345
678
S101
S103
12345
678
12345
678
Page 4
C G
DF E H H C E
G FD
Fig. 2.1 P .I.P.-BP1X
Front & Bottom Views
Reference Manual
P.I.P .–BP1X & P.I.P.–BP1C
2 Controls,Connectors
& Setup
A/B. Connectors
Balanced 3-pin XLR or quick-disconnect removable barrier block connectors are provided for the inputs and
outputs. The
with XLR Jacks: a female XLR for the
input connector and a male XLR for
the daisy chain output. These connectors are wired for pin 2 = Hot. The
P.I.P.-BP1C
connect removable barrier block connectors; mating connectors are
supplied to allow the user to quickly
disconnect an input or output and
move it to the other channel. These
connectors are wired pin1=Hot. (See
Section 3 for input and output wiring
examples.)
C. Low-Pass Filter DIP Switches
The input signal is processed first by a
4th-order (24-dB/octave) low-pass
filter network with a Butterworth response characteristic. Four eight-segment DIP switches (S100,S101,S102
and S103 for channel 1),(S200,S201,
S202 and S203 for channel 2) select
the low-pass filter frequency at which
the output is –3-dB down from the input. (See Figure 2.2 for a complete
table of frequencies and settings and
Figure 2.3 for sample frequency-response graphs.) Note that all four DIP
switches must use the same settings
for the response to be correct. These
DIP switches are factory-set to 20 kHz.
D. High-Pass Filter DIP
Switches
The signal is processed next by a 4thorder (24-dB/octave) high-pass filter
network with a Butterworth response
characteristic. Four eight-segment DIP
switches(S104,S105,S106 and S107
P.I.P.-BP1X
is supplied with quick-dis-
is supplied
for Channel 1), (S204,S205,S206 and
S207 for Channel 2) select the high
pass filter frequency at which the output is –3-dB down from the input. (See
Figure 2.2 for a complete table of frequencies and settings and Figure 2.4
for sample frequency-response
graphs.) Note that all four DIP switches
must use the same settings for the response to be correct. These DIP
switches are factory-set to 23 Hz.
E. Low-Frequency Equalization
DIP Switches
Following the high-pass filter is a 6thorder loudspeaker equalization feature. A ten-segment DIP switch (S108
for Channel 1); (S208 for Channel 2)
sets the +6 dB boost frequency of the
vented-box equalization filter. Note:
(Switch 7 is not active and can be set
to either the“ON”or“OFF’) position. This
feature is used for loudspeakers that
have been designed as a 6th-order
system and require 2nd-order equalization to achieve optimum performance. The filter uses the Sallen-Key
non-inverting second-order high-pass
topology. The loudspeaker manufacturer determines the frequency to
which this filter should be set. Low-Frequency Equalizaion is factory-set to
Flat (Figure 2.5 shows a complete listing of equalization points and the corresponding switch positions; Figure
2.6 shows typical response curves for
the filter).
F. Constant-Directivity Horn
Equalization DIP Switches
This ten-segment DIP Switch (S109 for
Channel 1) ); (S209 for Channel 2) sets
both the +3-dB shelving frequency
and the –3-dB low-pass roll-off frequency of the constant-directivity horn
equalization filter. Constant-directivity
horns have an inherent roll-off in their
Reference Manual
Page 5
P.I.P .–BP1X & P.I.P.–BP1C
response that must be corrected electronically by this filter. The actual response is determined by the
combination of a stage of first-order
boost (controlled by switches 8, 9, and
10) and a stage of second-order highfrequency roll off (controlled by
switches 1-6),
Note: switch 7 is not active and can be
set at either the“ON” or“OFF”position.
The loudspeaker manufacturer determines the frequencies to which these
switches should be set. Constant-Directivity Horn Equalizaion is factoryset to Flat. Refer to Figure 2.7a for
–3-dB low pass roll-off frequency settings and corresponding switch positions. Refer to Figure 2.7a for +3-dB
shelving frequency settings and corresponding switch positions. Figure
2.8 shows sample response curves.
G. Compressor Threshold
Potentiometer
The compressor occurs in the signal
path after the filters and equalizers. A
variable-threshold signal-driven compressor is provided and by default is
ON and is error driven. With errordriven compression, the compressor
will activate if the amplifier clips, regardless of the output signal. Errordriven compression is useful when the
possibility of over-driving the amplifier
by several dB is present and the resulting distortion is unacceptable.
Reducing the output voltage at which
the compressor will activate is useful
for applications where driver and/or
system protection is desired. Compression will then limit the output voltage to a predetermined level, even as
the input to the amplifier is increased.
Attack time is 10 msec and release
time is 360 msec. The compressor
has an infinite compression ratio,
meaning that when the threshold is
Page 6
reached, an increase in input level will
not result in a change in output level.
The range of compression is 16 dB. If
the input is driven more than 16 dB
over the threshold, the portion of the
signal over 16 dB will be passed linearly. At that point, the next limit to
output will be amplifier clipping. (See
Figure 2.9 for a table of potentiometer
settings and the corresponding voltage and power outputs from the amplifier.)
H. Compressor Control
This two-position jumper block controls the feedback path that will drive
the compressors. The compressor in
a certain channel can be controlled by
the error amplifier of that channel, the
error amplifier of the other channel, or
neither (compressor turned off). When
the compressor is turned off, no amplifier condition, whether it is high output
voltage or clipping, will cause the compressor to activate. To tur n the compressor off, place the jumper on only
one pin of the jumper block.
I. Daisy Output Jumpers
These two-position jumpers are used
to select between sending the processed signal (NORM) and the unprocessed signal (BYPASS) to the
daisy chain outputs. Sending the processed signal to the daisy chain outputs will allow two or more amplifiers to
run off of the same processed signal,
so only one
be used (the signal needs only to be
processed once for all of the amplifiers
that need the signal). Sending the unprocessed signal to the daisy chain
outputs will enable the use of other
P.I.P.–BP1
switch settings or the use of other
modules to perform different functions
on the same input signal. Both jumpers
of each channel must be in the same
position for correct operation.
P.I.P.–BP1
modules with different DIP
would have to
P.I.P.
Reference Manual
P.I.P .–BP1X & P.I.P.–BP1C
J. Input Ground Lift Jumper
The unit is shipped from the factory
with pin 1 of each input XLR connected
to signal ground through independent
0-ohm resistors. If hum problems are
Low Pass Frequencies
SEICNEUQERFFFOTUC
sgnitteShctiwS
1 2 3 4 5 6 7 8 9 01
NONONONONONONONO
FFO NO NO NO NO NO NO NO
NOFFONONONONONONO
FFO FFO NO NO NO NO NO NO
NONOFFONONONONONO
FFO NO FFO NO NO NO NO NO
NOFFOFFONONONONONO
FFO FFO FFO NO NO NO NO NO
NONONOFFONONONONO
FFO NO NO FFO NO NO NO NO
NOFFONOFFONONONONO
FFO FFO NO FFO NO NO NO NO
NONOFFOFFONONONONO
FFO NO FFO FFO NO NO NO NO
NOFFOFFOFFONONONONO
FFO FFO FFO FFO NO NO NO NO
NONONONOFFONONONO
FFO NO NO NO FFO NO NO NO
NOFFONONOFFONONONO
FFO FFO NO NO FFO NO NO NO
NONOFFONOFFONONONO
FFO NO FFO NO FFO NO NO NO
NOFFOFFONOFFONONONO
FFO FFO FFO NO FFO NO NO NO
NONONOFFOFFONONONO
------
--- ---
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)zH(
00002
00851
00321
00601
0008
8227
2146
7095
0004
3873
7453
6833
7603
7492
2082
1072
0081
5771
1271
3861
0061
7651
5251
4941
2331
experienced, the appropriate resistor
may be removed. This will then connect pin 1 of the XLR from that channel
to signal ground through an 82-ohm
resistor in parallel with a 0.1µF capacitor.
ssaPwoL
ycneuqerF
1 2 3 4 5 6 7 8 9 01
FFONONOFFOFFONONONO
NO FFO NO FFO FFO NO NO NO
FFOFFONOFFOFFONONONO
NO NO FFO FFO FFO NO NO NO
FFONOFFOFFOFFONONONO
NO FFO FFO FFO FFO NO NO NO
FFOFFOFFOFFOFFONONONO
NO NO NO NO NO FFO NO NO
FFONONONONOFFONONO
NO FFO NO NO NO FFO NO NO
FFOFFONONONOFFONONO
NO NO FFO NO NO FFO NO NO
FFONOFFONONOFFONONO
NO FFO FFO NO NO FFO NO NO
FFOFFOFFONONOFFONONO
NO NO NO FFO NO FFO NO NO
FFONONOFFONOFFONONO
NO FFO NO FFO NO FFO NO NO
FFOFFONOFFONOFFONONO
NO NO FFO FFO NO FFO NO NO
FFONOFFOFFONOFFONONO
NO FFO FFO FFO NO FFO NO NO
FFOFFOFFOFFONOFFONONO
NO NO NO NO FFO FFO NO NO
FFONONONOFFOFFONONO
sgnitteShctiwS
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SEICNEUQERFFFOTUC
ssaPwoL
ycneuqerF
)zH(
8031
9721
7521
1121
1911
7611
9411
277
467
057
747
037
327
417
707
866
366
556
946
736
136
426
916
755
355
Figure 2.2a Low Pass Cutoff Frequencies
Note: Switches 9 and 10 are not active.
“---” denotes switch may be set to either the
ON or OFF position.
Reference Manual
Page 7
P.I.P .–BP1X & P.I.P.–BP1C
Low Pass Frequencies
sgnitteShctiwS
1 2 3 4 5 6 7 8 9 01
NOFFONONOFFOFFONONO
FFO FFO NO NO FFO FFO NO NO
NONOFFONOFFOFFONONO
FFO NO FFO NO FFO FFO NO NO
NOFFOFFONOFFOFFONONO
FFO FFO FFO NO FFO FFO NO NO
NONONONOFFOFFONONO
FFO NO NO FFO FFO FFO NO NO
NOFFONOFFOFFOFFONONO
FFO FFO NO FFO FFO FFO NO NO
NONOFFOFFOFFOFFONONO
FFO NO FFO FFO FFO FFO NO NO
NOFFOFFOFFOFFOFFONONO
FFO FFO FFO FFO FFO FFO NO NO
NONONONONONOFFONO
FFO NO NO NO NO NO FFO NO
NOFFONONONONOFFONO
FFO FFO NO NO NO NO FFO NO
NONOFFONONONOFFONO
FFO NO FFO NO NO NO FFO NO
NOFFOFFONONONOFFONO
FFO FFO FFO NO NO NO FFO NO
NONONOFFONONOFFONO
FFO NO NO FFO NO NO FFO NO
NOFFONOFFONONOFFONO
------
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SEICNEUQERFFFOTUC
ssaPwoL
ycneuqerF
)zH(
845
445
535
135
625
225
105
894
394
094
384
084
674
374
623
423
223
123
813
713
513
413
603
403
303
1 2 3 4 5 6 7 8 9 01
FFOFFONOFFONONOFFONO
NO NO FFO FFO NO NO FFO NO
FFONOFFOFFONONOFFONO
NO FFO FFO FFO NO NO FFO NO
FFOFFOFFOFFONONOFFONO
NO NO NO NO FFO NO FFO NO
FFONONONOFFONOFFONO
NO FFO NO NO FFO NO FFO NO
FFOFFONONOFFONOFFONO
NO NO FFO NO FFO NO FFO NO
FFONOFFONOFFONOFFONO
NO FFO FFO NO FFO NO FFO NO
FFOFFOFFONOFFONOFFONO
NO NO NO FFO FFO NO FFO NO
FFONONOFFOFFONOFFONO
NO FFO NO FFO FFO NO FFO NO
FFOFFONOFFOFFONOFFONO
NO NO FFO FFO FFO NO FFO NO
FFONOFFOFFOFFONOFFONO
NO FFO FFO FFO FFO NO FFO NO
FFOFFOFFOFFOFFONOFFONO
NO NO NO NO NO FFO FFO NO
FFONONONONOFFOFFONO
NO FFO NO NO NO FFO FFO NO
FFOFFONONONOFFOFFONO
sgnitteShctiwS
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SEICNEUQERFFFOTUC
ssaPwoL
ycneuqerF
)zH(
203
003
892
692
592
082
972
872
772
472
372
272
172
562
462
362
262
062
952
852
752
232
132
032
922
Figure 2.2b Low Pass Cutoff Frequencies
Note: Switches 9 and 10 are not active.
“---” denotes switch may be set to either the
ON or OFF position.
Page 8
Reference Manual
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