DOD AC275 ACTIVE D.I BOX

275 Active Direct Box

The DOD AC275 is an active direct box offering high to low impedance conversions. It can
accept high impedance line level signals, or powered speaker outputs to provide a low
impedance feed tapped from in-between the amp and the speaker cabinet. The AC275 also
includes a switchable ground lift and dB pad, as well as operating on battery or phantom power.

Passive DI box especially designed for guitars.

The PDI09 can be connected between an effect device or amplifier and the mixing console. The PDI09 is not suitable for direct connection to a guitar. Integrated filter circuits simulate the authentic "speaker" sound. Tone can be varied between "Mellow“, "Normal“, or "Bright“.

Technical specifications:

• Input: 6.3 mm jack with parallel "THRU" socket
• Output: male XLR transformer balanced
• Attenuator: (Level switch) 0 dB for line signals, -15 dB for small amps up to 10 w, 30 dB for large amps up to 200 w
• No battery necessary

• Compact, high-performance passive direct box
• Jack input 1/4" TS in and parallel out
• Gold-plated XLR output / impedance balanced
• Super-flat frequency output for uncolored sound
• Switchable filter that optimizes the DI for guitars
• Instrument/Amp switch lowers the input level 30dB for feeding amplifiers into the DI
• Instruments or amplifier outputs with up to 3,000 watts can be connected directly
• Offers impedance and signal matching of instruments to mixers
• Perfect for stage and studio use
• Ground lift switch eliminates typical ground loop problems
• Rugged metal case can take the rigors of the road

• Type: Passive DI Box
• Channels: 1
• Ground Lift: Yes
• Inputs: 1 x 1/4"
• Outputs: 1 x 1/4“, 1 x XLR
• Height: 1.4"
• Width: 3.75"
• Depth: 5"
• Weight: 0.66 lbs.
• Manufacturer Part Number: DI600P

 1-channel DI box, passive Converts unbalanced 6.3 mm jack line input (e.g. from instruments) into balanced XLR output for connecting a mixer Switchable input attenuation: 0 dB, -20 dB, -40 dB Ground-lift switch eliminates ground loop problems 1 signal input (6.3 mm jack) 1 parallel output (6.3 mm jack), feed-through of the input signal 1 low-impedance output (XLR) Gray housing

Phantom or battery powered in a rugged steel chassis, with separate Speaker Level input connector
 
The ARX DI-PLUS represents another major step forward in active direct boxes. Packaged in
a single channel stand-alone format, the DI-PLUS represents a fresh look at active D.I. concepts.
Precision engineered
Ultra quiet, ultra clean circuitry delivers maximum headroom whatever the signal. Premium grade
components, plus an all-steel chassis gives excellent hum and noise specifications and superb
audio quality in a tough, roadworthy package.
Level control
The DI-PLUS features a Normal gain high impedance unbalanced input on the front panel, running to
a balanced XLR output on the rear. There is also a separate -40dB Speaker Level input for signal coming
from the External (auxiliary) speaker output of an amplifier. A a global Pad switch drops both the normal
input and the speaker input by a further 20dB, making it suitable for all applications, from the softest
keyboard to the hottest broadcast levels.
 
Battery compartment
The revolutionary simple 'clamshell' action of the DI-PLUS battery compartment makes battery changing
extremely easy, even on the darkest stages.
A 9v alkaline battery snaps into a PCB mounted battery holder for fast, secure location. No fragile battery
clip leads to break, no tools required, no screws to lose. Production crew heaven!
 
Automatic Phantom switching
The DI-PLUS will automatically switch itself to the console's own Phantom Power, if available, and an LED
will indicate this mode. Turn the Phantom Power off and it will instantly revert back to battery mode.
Rugged all-steel case
A lot of direct boxes are fitted into brittle cast alloy cases. Not this one! The tough all-steel inner and outer
chassis of the DI-PLUS provide excellent RF/EMF shielding while making it a sturdy, heavy duty unit that is
hard to dislodge, and hard to leave behind.
 
Rear panel showing XLR connector, ground lift switch, and captive screw for opening up the unit
for battery changing
 
Whether you're a Studio or Live Sound engineer, installation contractor, or broadcast engineer, you want all
the dynamics and clarity of the original sound source transferred to the mixing console. The ARX DI-PLUS
provides a rugged, no-compromise solution to all direct injection and signal balancing requirements.
 
T E C H N I C A L  S P E C I F I C A T I O N S:
Max Input Level
+13 dB Phantom powered
+6 dB Battery powered
Input Impedance 1 Meg Ohm
Max Output Level
+17 dB 10K Ohm load Phantom powered
+12 dB 10K Ohm load Battery powered
+11 dB 600 Ohm load Phantom powered
+12 dB 600 Ohm load Battery powered
Output Impedance 680 Ohms Balanced
Output Signal to Noise
-100 dB unweighted
-104 dB A weighted
Dynamic Range
117 dB 10K Ohm load Phantom powered
112 dB 10K Ohm load Battery powered
111 dB 600 Ohm load Phantom powered
107.5 dB 600 Ohm load Battery powered
Distortion
100 Hz .0027%, 1KHz .0028%, 10KHz .0037%
Frequency Response 20Hz to 20KHz, ± 0.2 dB
Gain through Unit: 6dB (Normal input, Pad switch out)
Pad Switch: -20 dB attenuation
Speaker Input
-40 dB attenuation, equivalent to 100:1 decrease in input level
-60 dB attenuation available with Pad switch
Input Connectors
Insulated jacks (!!!Note that the Input connector switches the unit on
when a plug is inserted. Remove plug when storing to avoid battery drain!!!)
Output Connector
3 pin XLR. Wired Pin 1 Ground, Pin 2 + Hot, Pin 3 - Cold.
With Audio Ground (Pin 1) lift switch
Construction
All-steel chassis, fibreglass PCB
Battery Access
Twist connector opens chassis, snap-in battery holder inside.
No tools required