Apex Digital ADP2 Quickspecs

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INTRODUCTION
SPECIFICATIONS
Congratulations on your purchase of an APEX ADP2 Passive Direct Box. This sturdy and dependable
Attenuation Switch,
three-position unit allows you to connect the output of an electronic musical instrument or other audio source to the
balanced input on a mixer. Alternatively, the APEX ADP2 allows connection of an audio source to an
0dB, -20dB, -40dB
instrument amplifier while simultaneously patching it to a channel on a mixer. It even gives you the
Frequency Range
ability to connect the speaker output of an instrument amplifier directly to the input of a mixer - espe-
15Hz-30kHz +/- 0dB
cially desirable in the case of a tube guitar amp (speakers must also be connected, see below).
Inputs
50 kOhm ¼" TRS*
FEATURES
phone jack
The APEX ADP2 includes the following features:
600 ohm XLR
1. Switchable input attenuation
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Outputs
50 kOhm ¼ inch TRS
phone jack, parallel link
600 ohm balanced XLR
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2. 50 kOhm Instrument input. The APEX ADP2 matches the signal level and impedance with unity
Dimensions (WDH)
3.75 x 1.5 x 2.9 inches
3. The 50 kOhm Parallel Link jack output enables you to connect output from the D.I. Box directly 3
95 mm x 40 mm x 73 mm
Weight
313g, 0.69 lb
4. The 600 ohm XLR output jack enables you to send a balanced signal to the mixing console. 4
* NOTE: ¼ inch TRS phone
5. A Switchable Ground Lift is provided to help eliminate hum caused by ground loops.
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jack pin configuration
Tip = (+) 0° / Ring = 180° /
APPLICATIONS
Sleeve = (-) Ground.
1. Electric Guitar/Bass Pick-Up Signals
The high impedance signal from a guitar or bass pick-up is translated by the APEX ADP2 into a low
impedance balanced signal required by mixing consoles.
• Suggested attenuation setting (1): 0dB
2. Keyboards - Line Level Signals
The APEXADP2 automatically balances and matches the line level outputs of modern electronic key-
boards. If you are using a multiple keyboard setup with your keyboards plugged into an instrument
amplifier, simply connect the line output of the instrument amplifier to the APEXADP2 with an unbal-
anced patch cable, then use a balanced patch cable to go to a channel on the mixer.
• Suggested attenuation setting (1): -20dB (line level) or -40dB (amp level)
3. DJ Console Output Signals
DJ Mixers often supply only an unbalanced -10dB signal. The APEX ADP21 converts this signal to a
balanced line level before it reaches the house console, while providing a convenient method of con-
nector transition with long cable run capability.
• Suggested attenuation setting (1): 0dB or -20dB
4. Speaker Level Signals
The ADP2's capability of accepting speaker level input from an amplifier's output allows post-amplifi-
er, post EQ/effects signals to be fed directly to the console. This is particularly desirable where a
tube guitar amp is concerned. CAUTION; If you are connecting a "tube" amplifier's speaker output
this way, BE SURE A SPEAKER LOAD IS ALSO CONNECTED. Tube amps must see a load
impedance that falls within their design parameters. Because it has a very high input impedance,
connecting the ADP2 in parallel with a speaker load will not alter the overall speaker load impedance
encountered by the amplifier.
• Suggested attenuation setting (1): -40dB
GROUND
T M
LIFT GND
O IXER
600 Ohms
ADP2
D
IRECT
IN / THRU
2
IN
HI
ATT
IMP
F
ROM
I
I T
N / HRU NSTRUMENT
50 kOhms 50 kOhms
• 0dB for electric guitar/bass pickups
• -20dB for line level signals, such as CD-Players and keyboards
• -40dB for speaker feeds
gain without adverse effects on the source signal.
to power amplifiers without a separate preamplifier.
www.ApexElectronics.com
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B
OX
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LOW
1
IMP
GND
1
LIFT
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