XQP 500 Series User manual

XQP
610 N. 14th Street
Enid, OK 73701
580-231-1941
www.xqpaudio.com
DISRUPTION potentiometer
Adjusts the amount of disruption
Red LED lights with disrupting action
MAKEUP potentiometer
Allows restoration of gain lost to
compression
XQP 545 Optical Disrupter
500 Series VPR Module
IN switch
Silently activates disruption
Yellow LED indicates IN
X4 switch
Increases sidechain sensitivity by 4
Green LED indicates X4
The XQP 545 Optical Disrupter provides compression that creates an
asymmetrical waveform. The result is smooth, even-order harmonic
distortion with no harsh clipping of the waveform.
The 531 is built with high-quality Analog Devices opamps in the signal
path.
The XQP 545 is a not so
distant cousin of the XQP
531 Optical De-esser.
Both utilize dual VACTROL®
optoisolators for gain
reduction.
Input impedance:
Output impdedance:
Frequency response:
Max. output level:
THD in bypass:
Noise:
Attack time:
Release time:
Max gain reduction:
Current requirement:
43KΩbalanced
50Ωbalanced
4Hz - 55KHz (-3dB)
22dBu
<0.002% @ 1KHz
-80dBm, unweighted
10msec.
18msec.
<20dB
170mA @ ±16VDC
SPECIFICATIONS
IN
X4
DISRUPTION
MAKEUP
OPTICAL
545 DISRUPTER
0
4
8
12
16
20
24
28
32
36
40
XQP
0
4
8
12
16
20
24
28
32
36
40

IC1
IC3
8
10
C3
3.3µF
C4
3.3µF
R1
10KΩ
C5
0.12µF
C6
0.12µF
12+V
14-V
CR1
CR2
7
13Common
1Chassis
C2
10µF
C1
10µF
R13
475Ω
R14
475Ω
AOI1 AOI2
4
1
2
3
56
R5
750Ω
Reduction
LED3
IC4 6
2
3
R6
1KΩ
C15
330pF
7
4
NC
S1
X4
R11
10KΩ
R10
348Ω
X4
LED1
R9
1KΩ
C16
0.12µF
C17
0.12µF
R7
4.75KΩ
In
LED2
R8
1KΩ
NC
NC
In
S2
P1
10KΩB
Disruption
IC5
3
2
6
IC2 6
2
3
C8
0.12µF
C9
0.12µF
C10
0.12µF
C11
0.12µF
7
4
7
4
C13
10µF NP
C12
10µF NP
8
1
2
3
6 5
2
4
+ Out
+ In
- In
- Out
5 Common
R12
75Ω
7
4
C19
0.12µF
C20
0.12µF
XQP
545 Optical Disrupter
Version 1.9 9/4/10
© 2010 XQP
IC1: SSM2141
IC2: OP37
IC3: SSM2142
IC4: LF351
IC5: LF351
CR1: 1N4004
AOI1: VTL5C1
AOI2: VTL5C1
C18
10µF
XQP
C7
68pF
R4
33.2KΩ
R3
4.75KΩ
R2
10Ω
P2
10KΩA
Makeup
C14
3.3µF

XQP 545 Owner’s Guide
Chassis
+ Output
- Output
Audio Common
- Input
+ Input
+ 16 VDC
Power Ground
- 16 VDC
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
12.
13.
14.
15.
OPERATION
The 545 is simple to use. The amount of gain reduction is
adjusted with the DISRUPTION control in conjunction with
the X4 switch. The X4 switch multiplies the sensitivity of the
sidechain by a factor of four, allowing the 545 to be used
effectively on low level signals. Low frequencies are affected
most significantly, with the effect becoming increasingly less
active as frequency rises. Because the resulting distortion is
the desired effect, a traditional gain reduction meter is not
included. Your ears should be the judge to determine the
amount of effect to apply. Compression can be viewed as a
byproduct of distortion as in traditional cases. The red LED
lights up when gain reduction is taking place in the same
manner as the LEDs in the optoisolators, providing an
indicator that gain reduction is taking place.
The MAKEUP control is an output level control to allow the
user to restore level lost in gain reduction. As with the
DISRUPTION control, the numbers 0 - 40 do not refer to dB
or anything like that. They are simply a divisible set of
numbers which make recall of settings easy.
Finally, the IN switch activates the sidechain. Disengaging
this switch silently bypasses the unit, although the audio path
remains active.
WARRANTY
The XQP 545 Optical Disrupter is warranted for ten years
from the date of purchase. You do not have to fill out the
enclosed warranty card, but we would appreciate the info.
You may also register your 545 online at www.xqpaudio.com.
XQP
610 N. 14th Street
Enid, OK 73701
580-231-1941
www.xqpaudio.com 1.4
We think you will find the 545 a very
unique tool for adding creative distortion
to a sound source. Subtle amounts can be
used to create a slight thickening, ala tape
saturation. But quite noticable distortion
can be achieved on most sources
containing information in the low
frequency region.
43KΩbalanced
50Ωbalanced
4Hz - 30KHz (-3dB)
22dBu
<0.002% @ 1KHz
-80dBm, unweighted
10msec.
18msec.
<20dB
170mA @ ±16VDC
Input impedance:
Output impedance:
Frequency response:
Max. output level:
THD in bypass:
Noise:
Attack time:
Release time:
Max gain reduction:
Current requirement:
SPECIFICATIONS
INTRODUCTION
Thank you for purchasing the XQP 545 Optical Disrupter. The 545 is compressor
that creates an asymmetrical waveform in the low frequencies. There is no clipping,
because an amplifier stage is not being overdriven. Instead, the LEDs in the dual
VACTROL® optoisolators are driven by an AC signal which modulates the audio
during gain reduction in a manner that producs even-order harmonic distortion.
The 545 is a VPR module (hopefully you are already aware of this) designed to fit into
the common 500 series racks orginated by API. It follows the standard API pinout.
VPR Alliance approval pending as of 7/30/10.
IN
X4
DISRUPTION
MAKEUP
OPTICAL
545 DISRUPTER
0
4
8
12
16
20
24
28
32
36
40
XQP
0
4
8
12
16
20
24
28
32
36
40
XQP