User’s Guide
for the
CRATE PRO AUDIO
PX700DLX/
PX900DLX
Powered Mixer
with
Digital Signal Processing
In order to achieve maximum performance from
your new Crate Pro Audio Mixer we recommend
that you read this user’s guide prior to its use.
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PX700DLX/PX900DLX Powered Mixer
Features:
The Input Channels:
• Peak/Signal LEDs for optimum level settings
• Three bands of equalization
• Monitor, effects, and main level controls
• Gain control
• Pad switch (channels 1-4 only) to accommodate “hot” signals
• 1/4” balanced low impedance and XLR balanced high impedance input jacks
• Color coded knobs for ease of reference
The Master Section:
• Separate 7-band graphic eq’s for Monitor/Main 2 and Main/Main 1 (switchable)
• Separate Master level controls for Monitor/Main 2 and Main/Main 1 (switchable)
• Built in Limiter to prevent overdriving the amplifiers
• Five-segment LED displays for monitoring the output signals
• Effects send and return controls
• Switchable phantom power
• DSP Digital Signal Processing with on/off switch and four selectable effects
• Footswitch jack for remote control of DSP on/off
• Effects send/aux in jacks for external effects
• Tape in and tape out jacks for recording and play back
• Main and monitor line out jacks
• Color coded knobs for ease of reference
System Block Diagram:
CHANNEL 1-4:
MAIN 1 "A"
SPKR OUT
PHANTOM
POWER
+48V
MIAN
PEAK/
SIGNAL
FCET
MINTOR
MAIN 1 "B"
SPKR OUT
PAD
POWER
AMP 1
BRIDGE
SPKR OUT
LOW Z
INV
1
4
3
2
BRIDGE
MON/MAIN
MAIN 2 "A"
SPKR OUT
POWER
AMP 2
EFFECT
B
6
5
GAIN
MAIN
MON
LOW MID HIGH
MAIN 2 "B"
SPKR OUT
HI Z
TAPE
OUT
TAPE
OUT
LIMITER/
CHANNEL 5-7/5-9:
7-BAND
GRAPHIC EQ
LED
PHANTOM
POWER
+48V
DISPLAY
PEAK/
SIGNAL
MAIN
OUT
MAIN
MASTER
MIC
MAIN/
EFF RTN
LIMITER/
LED
DISPLAY
B
EFFECT
7-BAND
GRAPHIC EQ
4
6
5
GAIN
MAIN
MON
MON
OUT
1
3
2
LOW MID HIGH
LINE 1
LINE 2
MON
MASTER
MON/
EFF RTN
DSP
AUX IN
FOOT
SWITCH
AUX IN
VOCAL SMALL
HALL
ON
SUM
TAPE IN
TAPE IN
LARGE DELAY
HALL
EFFECTS
SEND
EFFECTS
SEND
TAPE IN
3
M
F
MNITOR
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PX700DLX/PX900DLX Powered Mixer
The “Mono” Input Channels (1-4):
1. PEAK/SIGNAL LED: This LED will illuminate green when a
signal is present at the High or Low Z inputs. When the sig-
nal nears clipping, the LED will illuminate red. (See Gain
control, #8.)
1
2
3
4
5
6
7
8
2. HIGH: Use this control to adjust the high frequency level for
the channel. This control allows for 15dB of cut or boost at
12kHz.
3. MID: Use this control to adjust the midrange frequency level
for the channel. This control allows for 15dB of cut or boost
at 2.5kHz.
4. LOW: Use this control to adjust the low frequency level for
the channel. This control allows for 15dB of cut or boost at
80Hz.
5. MON: Use this control to set the amount of the channel’s sig-
nal sent to the monitors.
6. EFFECT: Use this control to set the amount of internal DSP
effect (or external effects, if used) to be applied to the chan-
nel.
7. LEVEL: Use this control to set the channel’s output signal
level.
8. GAIN: Use this control to set the input signal level for the
channel. Adjust this control so the peak/signal LED (#1)
flashes red on strong signal peaks.
9
9. PAD: Use this switch to accommodate “hot” input signals.
(Signals too strong to allow a useful setting of the gain con-
trol without causing the peak/signal LED to glow red.)
Depress this switch to engage the 20dB pad, thereby reduc-
ing the input signal’s level to a more useable range.
10. HIGH Z INPUT: The signal output from a high impedance
microphone or a line level signal (such as an instrument,
rhythm machine, tape deck, etc.) may be connected here by
means of a shielded cable terminated with a male 1/4” plug.
Tip = “+,” ring = “–,” and sleeve = shield.
10
11
11. LOW Z INPUT: The signal output from a low impedance
microphone or a low impedance line level signal (such as a
line out signal from an instrument amplifier) may be con-
nected here by means of a shielded cable terminated with a
male XLR plug. Pin 2 = “+,” pin 3 = “–,” and pin 1 = shield.
4
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PX700DLX/PX900DLX Powered Mixer
The “Stereo” Input Channels (5-7/5-9):
12. PEAK/SIGNAL LED: This LED will illuminate green
when a signal is present at the High or Low Z inputs.
When the signal nears clipping, the LED will illumi-
nate red. (See Gain control, #19.)
12
13
14
15
16
17
18
19
13. HIGH: Use this control to adjust the high frequency
level for the channel. This control allows for 15dB of
cut or boost at 12kHz.
14. MID: Use this control to adjust the midrange fre-
quency level for the channel. This control allows for
15dB of cut or boost at 2.5kHz.
15. LOW: Use this control to adjust the low frequency
level for the channel. This control allows for 15dB of
cut or boost at 80Hz.
16. MON: Use this control to set the amount of the chan-
nel’s signal sent to the monitors.
17. EFFECT: Use this control to set the amount of inter-
nal DSP effect (or external effects, if used) to be
applied to the channel.
18. LEVEL: Use this control to set the channel’s output
signal level.
19. GAIN: Use this control to set the input signal level for
the channel. Adjust this control so the peak/signal
LED (#12) flashes red on strong signal peaks.
20. LINE 1/LINE 2 INPUTS: The signal output from a
stereo source (such as a stereo instrument, rhythm
machine, tape deck, etc.) may be connected here by
means of a pair of shielded cables, each terminated
with a male 1/4” plug. Tip = “+,” ring = “–,” and sleeve
= shield. The left and right signals are summed inter-
nally to become a mono signal – without the need for
external summing devices or adapter cables.
20
21. MIC INPUT: The signal output from a low impedance
microphone or a low impedance line level signal
(such as a line out signal from an instrument amplifi-
er) may be connected here by means of a shielded
cable terminated with a male XLR plug. Pin 2 = “+,”
pin 3 = “–,” and pin 1 = shield.
21
5
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PX700DLX/PX900DLX Powered Mixer
The Master Section:
23
22
24
26
25
28
27
34
29
30
31
32
33
35
22,27. GRAPHIC EQ’S: These seven band graphic equalizers allow
customization and shaping of the output signals to match room
acoustics and enhance the sound. Use the selector switch (#25)
to determine where the equalization will be applied: either to the
main and monitor output signals, or to the main 1 and main 2 out-
put signals.
is connected to the Main Output jack (#44). Also, the
Monitor/Main 2 graphic EQ (#22) controls the signal to power
amp #2, the output of which is connected to the Monitor Output
jack (#43).
When this switch is depressed, the Main/Main 1 graphic EQ
(#27) controls the signal to power amp #1, the output of which is
connected to the Main 1 Speaker Output jacks (#46). Also, the
Monitor/Main 2 graphic EQ (#22) controls the signal to power
amp #2, the output of which is connected to the Main 2 Speaker
Output jacks (#46).
23,28. LED METERS/LIMITER INDICATORS: These LED meters
monitor the output signal levels for either the main and monitor
output signals, or the main 1 and main 2 output signals (depen-
dent on the setting of the selector switch, #25). The red LED’s illu-
minate when the internal limiter is engaged to prevent the signal
from being clipped. (Clipping results in overdrive distortion and
should be avoided.) If the limiter LED’s flash continuously or
remain on constantly during use, reduce the output signal levels
until they flash only on strong signal peaks.
30. EFFECTS SEND: Use this control to set the overall signal level
sent to the internal DSP or external effects (if used).
31. AUX IN: Use this control to set the input signal level of the aux in
jack (#40).
32. TAPE IN: Use this control to set the input signal level of the tape
24,29. EFFECTS RETURNS: Use these controls to adjust the mag-
nitude of the effects applied to the output signals. Use the selec-
tor switch (#25) to determine where the effects will be applied:
either to the main and monitor output signals, or to the main 1 and
main 2 output signals.
in jacks (#41).
34. POWER LED: This LED illuminates when the mixer is on.
35. PHANTOM +48V: This switch, when depressed, applies +48
volts DC to pins 2 and 3 of each channel’s XLR input jacks. This
allows use of microphones which require a source of phantom
power for proper operation. (Mics not requiring phantom power
will not be affected by the presence of the DC voltage.) The adja-
cent LED illuminates when the phantom power is on.
25. MAIN/MONITOR / MAIN1/MAIN 2: Use this switch to select
whether the graphic EQ’s, LED meters, and master level controls
are assigned to the Main and Monitor outputs (switch in the out
position) or to the Main 1 and Main 2 outputs (switch depressed.
When this switch is in the out position, the Main/Main 1 graphic
EQ (#27) controls the signal to power amp #1, the output of which
(continued...––––––––>)
6
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PX700DLX/PX900DLX Powered Mixer
The Master Section (continued):
43
37
36
40
41
42
38
39
44
36. DSP SELECTORS: Use these switches to select the type of
digital signal processing effect to be applied – vocal, large hall,
and small hall are reverberation effects; delay is a digital delay
effect.
40. AUX IN: Use this jack as the return jack when using an exter-
nal effects device, or to feed another mixer’s signal into the
PX700DLX/PX900DLX. This jack is post-input channel, pre-eq,
and pre-power amp.
37. DSP ON: Use this switch to activate the internal digital signal
processor. When this switch is depressed, the selected DSP
effect is activated.
41. TAPE IN: Use these jacks to connect the outputs of a tape deck
or CD player to the mixer. The playback signal level is set by the
tape in level control (#32).
38. EFFECTS SEND: Use this jack to send a signal to an external
effects device. The signal level at this jack is set by the effects
send control (#30).
42. TAPE OUT: Use these jacks to connect the mixer to a tape
recorder. These jacks are is post-eq, pre-master, and their sig-
nal level is determined by the channel level controls.
39. FOOTSWITCH: Use this jack to connect a footswitch for
remote on/off control of the DSP and external effects device.
The footswitch must be a normally open, momentary type such
as the Crate model #FSIU. The wiring for the footswitch is as
43. MONITOR OUT: Use this jack to send a line level, monitor mix
signal to the power amplifier you are using for your monitor
speakers.
44. MAIN OUT: Use this jack to send a line level, main mix signal
to an external power amplifier (if used), a recording console, or
to the aux in jack of another PX700DLX/PX900DLX.
shown:
ON
TIP
TO
OFF
FOOTSWITCH
FOOTSWITCH
JACK
SLEEVE
1/4" MONO PLUG
The Rear Panel:
POWER
SPEAKERS
B
A
B
A
AMP
MAIN
BRIDGE
45
46
46
MAIN /
MON
47
MAIN 2
4 OHM MIN. LOAD
BRIDGE
8 OHM MIN. LOAD
MAIN 1
4 OHM MIN. LOAD
45. POWER AMP SWITCH: Use this switch to set the amplifier for
mono bridged operation (switch to the left) or for main/monitor
operation (switch to the right).
the bridge position. Observe the 8 ohm minimum load rating
and all other speaker information printed on the rear of the
mixer.
46. MAIN 1/MAIN 2 SPEAKERS: Use these jacks to connect the
mixer to your PA speakers, only when the power amp switch
(#45) is set to the main/monitor position. Observe the 4 ohm
minimum load rating and all other speaker information printed
on the rear of the mixer.
48. AC LINE CORD (not shown): Connect this cord to a suitable
source of AC power, as indicated to the right of the cable. DO
NOT ATTEMPT TO BYPASS THE GROUND CONNECTION
OF THIS POWER CABLE!
49. POWER SWITCH (not shown): Use this switch to apply AC
voltage to the mixer. The mixer is on when the switch is
depressed, off when the switch is in the out position.
47. BRIDGE SPEAKER: Use this jack to connect the mixer to your
PA speakers, only when the power amp switch (#45) is set to
7
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PX700DLX/PX900DLX Powered Mixer
Technical Specifications
MAXIMUM VOLTAGE GAIN
(PAD OFF)
86dB Ch In (Lo-Z) to Power Amp Out (Ch 1-4)
66dB Ch In (Lo-Z) to Main Out, Monitor Out (Ch 1-4)
72dB Ch In (Lo-Z) to Effect Out (Ch 1-4)
50dB Ch In (Lo-Z) to Rec Out (Ch 1-4)
54dB Ch In (Hi-Z) to Main Out, Monitor Out (Ch 1-4)
25dB Aux In to Main Out
73dB Mic In to Main Out, Monitor Out (Ch 5-7/5-9)
28dB Line In to Main Out, Monitor Out (Ch 5-7/5-9)
INPUT CHANNEL EQUALIZATION
FREQUENCY RESPONSE
±15dB Maximum
High: 12kHz (shelving); Mid: 2.5kHz (peaking); Low: 80Hz (shelving)
+1/-3dB, 20Hz-20kHz @ 1W output into 8Ω (Power Amp Out)
+1/-3dB, 20Hz-20kHz @ +4dB output into 10kΩ (Main Out, Monitor Out, Effects Send)
MAXIMUM OUTPUT POWER
200W/4Ω @ 0.5% THD @ 1kHz
TOTAL HARMONIC DISTORTION
<0.3% @ 20Hz-20kHz, 100W output into 4Ω (Power Amp Out)
<0.3% @ 20Hz-20kHz, +14dB output into 10kΩ (Main Out, Monitor Out, Effects Send)
HUM AND NOISE
-122dB equivalent input noise, -63dB residual output noise
(Power Amp Out)
(Average, Rs=150Ω)
(with 20Hz-20kHz BPF)
-78dB residual output noise (Main Out, Monitor Out, Effects Send)
-73dB (77dB S/N) (Main Out, Monitor Out)
-40dB (44dB S/N) (Main Out, Monitor Out)
-74dB (78dB S/N) Effects Send
All channel level controls at minimum
One channel level controls at maximum
All channel level controls at minimum
One channel level controls at maximum
-34dB (38dB S/N) Effects Send
CROSSTALK @ 1kHz
GRAPHIC EQUALIZER
INTERNAL DIGITAL EFFECT
PHANTOM POWER
63dB adjacent input, 63dB input to output
7 bands (125Hz, 250Hz, 500Hz, 1kHz, 2kHz, 4kHz, 8kHz) ±12dB Maximum
4 types (Digital Delay, Vocal, Large Hall, Small Hall)
+48V is supplied to electrically balanced inputs for powering condenser microphones via 6.8kΩ current
limiting/isolating resistors
LIMITER LED ON
Output Level: 36dB
DSP Mute: on/off
200W
FOOT SWITCH
POWER CONSUMPTION
SIZE AND WEIGHT
PX700DLX: 18.9” (480mm) W x 10.8” (275mm) H x 10.8” (275mm) D; 37.5 lbs (17kg)
PX900DLX: 21.6” (546mm) W x 10.8” (275mm) H x 10.8” (275mm) D; 39 lbs (17.7kg)
Due to ongoing product development and improvement, the specifications contained herein are subject to change without notice.
©2000 SLM Electronics, Inc. • A Division of St. Louis Music, Inc.
1400 Ferguson Avenue • St. Louis, MO 63133
18-029-01 • 01/00
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