Crate Amplifiers Musical Instrument PX700DLX User Manual

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.  
 
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  
 
PX700DLX/PX900DLX Powered Mixer  
The MonoInput 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
 
PX700DLX/PX900DLX Powered Mixer  
The StereoInput 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
 
PX700DLX/PX900DLX Powered Mixer  
The Master Section:  
23  
22  
24  
26  
25  
28  
27  
34  
29  
30  
31  
32  
33  
35  
22,27. GRAPHIC EQS: 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
 
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
 
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 8(Power Amp Out)  
+1/-3dB, 20Hz-20kHz @ +4dB output into 10k(Main Out, Monitor Out, Effects Send)  
MAXIMUM OUTPUT POWER  
200W/4@ 0.5% THD @ 1kHz  
TOTAL HARMONIC DISTORTION  
<0.3% @ 20Hz-20kHz, 100W output into 4(Power Amp Out)  
<0.3% @ 20Hz-20kHz, +14dB output into 10k(Main Out, Monitor Out, Effects Send)  
HUM AND NOISE  
-122dB equivalent input noise, -63dB residual output noise  
(Power Amp Out)  
(Average, Rs=150)  
(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 6.8kcurrent  
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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