PYLE Audio DJ Equipment PDC21 User Manual

OWNER’S MANUAL  
P D C 2 1  
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Operating the PDC21  
A direct box, or DI box, provides the facility for the direct insertion of an  
audio signal into a mixer or recorder. The PDC21 offers a variety of DI  
solutions for live sound and recording applications. You can connect all  
kinds of audio signals like guitars, keyboards, outboard signal processors  
and even the high-powered speaker output from an amplifier. The  
PDC21 enables you to tap off the signal from a guitar or bass guitar and  
pass the signal from the PARA OUTPUT to the on stage amplifier without  
affecting the original sound. This can eliminate the need for mixing the  
guitar amplifier, which in many cases is preferable, especially with bass  
guitar. The PDC21 is also very useful for connecting unbalanced signals  
from sources like signals DJ and sub-mixers, effects processors and  
keyboards to a main PA or recording mixer. The PDC21 balanced output  
provides a clean signal at a low level so long runs of cable are possible.  
Another benefit from a balanced connection is common mode rejection.,  
which provides cancellation of the bad sounds(hums and buzzes) while  
leaving the original signal pure.  
Direct insertion of an Instrument into a PA system  
One of the most common applications for using a DI box is getting the  
signal of a bass guitar into the PA system. Simply put, the low  
frequencies produced by bass are difficult to mic, so use of a DI box is  
almost always preferable. In addition, the signal going to PA system can  
be tweaked by the FOH(front of house) engineer, without affecting the  
sound the musician dials up on stage. You can use PDC21 to plug a  
guitar directly into the PA system as well. Especially acoustic guitars with  
pickups and when using electronic guitar processors and modelers.  
Follow the diagram and steps below to connect a guitar to a PA mixer.  
·Connect the output of the guitar or bass to the PDC21 INPUT  
·Connect PDC21’s PARA OUT to the input of the guitar or bass amplifier.  
·Connect PDC21’s BALANCED OUTPUT to the input of main PA mixer.  
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NOTE: TO avoid annoying pops and clicks be sure to mute  
(or turn down the volume control) of your mixer’s output  
while connecting the PDC21.  
Connecting to High Power Signals  
The PDC21 provides the capability of tapping off the signals from  
amplifiers, such as the output or guitar amp or power amplifier. You can  
even use PDC21 to connect to the speaker output of a consumer stereo  
system or boom box, for example, if you want to sample some old  
records or cassette tapes.  
NOTE: Be sure that the ATT switch is set to (-20db or -40db)position  
before connecting the signal from the output of any amplifier.  
Follow the diagram and steps below to connect a powered output of a  
guitar amplifier to a PA mixer.  
·connect the output of the guitar or bass to the guitar amp input.  
·Set the ATT switch to the -20db or -40db  
·Using unshielded speaker cable, connect the guitar amp’s speaker  
output to the PDC21’s INPUT  
·Using another unshielded speaker cable, connect PDC21’s PARA OUT  
to the input of the guitar amplifiers speaker  
·Connect PDC21’s BALANCED OUTPUT to the input of main PA mixer.  
-3-  
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NOTE: This example may appear to be the same as the  
previous, however in this example, the PDC21 is tapping the  
sound of the instruments and amp, as opposed to just the  
instrument itself.  
Converting the output of Unbalanced Devices  
-4-  
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The PDC21 can be quite useful on stage or in the studio for connecting  
unbalanced devices, particularly key boards. The output levels of many  
keyboards are low. So their signals can benefit greatly by connecting  
their unbalanced outputs to the PDC21 by doing so the signal can be  
sent cleanly for long distances while benefiting from the low noise and  
common mode rejection provided by PDC21’s balanced low-level output.  
The diagram following shows a typical hook-up for a stereo keyboard  
connected to a stereo stage monitor system and the main PA mixer.  
Specifications:  
Frequency Response  
5-35 KHz, -3dB  
-104dBu  
Noise Level(22-22KHz, Input Shorted)  
THD + N(10Hz-22KHz)  
Input Impedance  
0.013% typ. @ 1 VRMS, 1KHz  
50K Ohm  
Max. Input Level (1% THD)  
+8.1 dBu (9V. Batt)  
+11.3dBu(48V.Phantom)  
1/4” Phone Jack, unbalanced  
Instrument Input  
Parallel (link) out  
BALANCED OUTPUT  
Dimensions:  
1/4” Phone Jack, unbalanced  
XLR Connector, balanced  
4.72”x2.95”x1.57”  
-5-  
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