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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. | |
The alphaton Direct Injection-Box SM-50 allows direct connection of electric guitars,
electric bass, and electronic music instruments with mixing desks of PA systems
and of recording studios.
The SM-50 reduces the amount of microphones used on stage, thus improving gain
before feedback.
Coloration of sound is avoided. Clean signal without interference from other instruments
eases the job of the recording engineer. The use of a strong aluminium die-cast box allows
trouble-free function for a number of years even under adverse conditions. Double grounding
(hum) can be eliminated by activating the built-in ground-lift switch. Isolation voltage between
input and output is 2500 volts, against ground 1500 volts (with ground-lift switch activated).
The box thus complies with toughest safety standards.
Technical Data
input impedance 20 kOhm
input impedance, instrument
input impedance, line-In
input impedance, speaker
output impedance 200 Ohm
frequency response 30 ... 20000 Hz, ± 1 dB
THD
isolation voltage tranformer pri/sec 2500 V
outpur to ground 1500 V
inputs 1/4" phone jacks, unbalanced
outputs XLR, balanced, microphone level.
pin 1 = ground, pin 2 = hot, pin 3 = cold
case aluminium die-cast
weight 230 g
dimensions113 x 71 x 37 mm
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Passive DI box. Jack input with paralell "THRU" output, transformer balanced XLR output. Attenuable input sensitivity, can handle both line level and speaker level signals.
Product type
DI Boxes
Type
passive
Channels
1
Inputs
1
Input connectors
6.3 mm Jack
Max. input level
+ 54 dBu
Input impedance
(@ 60 Hz) 60k Ohm(s)
Input pad
0 / -30 dB
Outputs
1
THRU outputs/channel
1
Output connectors
6.3 mm Jack , XLR
Max. output level
+ 4 dBu
Output impedance
600 Ohm(s)
Frequency response
20 - 20000 Hz
Transformer balanced
yes
Ratio
10 : 1
Controls
attenuator , ground lift
Cabinet material
sheet steel
Cabinet surface
powder coated
Width
110 mm
Depth
73 mm
Height
42 mm
Weight
0,34 kg
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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 |
2-channel DI box/splitter, passive Converts 2 separate unbalanced line inputs (e.g. instruments) into 2 balanced XLR outputs for connecting a mixer Switchable to split mode (input 1 routes the signal to both outputs) Switchable input attenuation: 0 dB, -20 dB, -40 dB Ground-lift switch eliminates ground loop problems 2 signal inputs via XLR/jack combo connectors 2 low-impedance XLR outputs Modern convex housing design Full rubber housing corners for safe operation Cables can be routed under the housing |
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