DB1A includes an MU-METAL core transformer able to reduce phase and harmonic distortion to a minimum, with noticeable improvement of the linear phase even on very long cables. The audio integrity is guaranteed by low-noise, low-consumption IC for balancing the signal, able to handle very low-impedance loads. The input section features JACK and XLR connectors […]
DB1A includes an MU-METAL core transformer able to reduce phase and harmonic distortion to a minimum, with noticeable improvement of the linear phase even on very long cables. The audio integrity is guaranteed by low-noise, low-consumption IC for balancing the signal, able to handle very low-impedance loads. The input section features JACK and XLR connectors with link possibility and a PAD of up to 30 dB that permits very high-level signal inputs to be used.
Technical Specifications
Type :
1 channel active DI
Width :
215 mm(8.465inch )
Height :
50 mm(1.969inch )
Depth :
125 mm(4.921inch )
Weight :
1 kg(2.205lb )
Rack Units :
1/2 rack unit.
Removing the two molded sides and attaching two units, with the supplied brackets, you can mount two by two DI boxes into a standard 19¿ rack.
Power Supply :
Phantom Power: +24 volts DC to +48 volts DC
External AC/DC adaptor: +9 volts DC with link
Standalone/Standby: 9 volt PP3 type battery.
Current drain :
Inputs :
Two Parallel 1/4′ jack connectors and one parallel XLR connector (unbalanced).
Input Impedance :
1M Ohm (pad at 0 dB)
47k Ohm (pad at -10/-20 dB)
44k Ohm (pad at -30 dB)
Input Levels :
+5 dBu (pad at 0 dB)
+15 dBu (pad at -10 dB)
+25 dBu (pad at -20 dB)
+35 dBu (pad at -30 dB)
Outputs :
XLR male: Pin 2 Hot / Pin 3 Cold / Pin1 Ground
Output Levels :
into 600 Ohms or greater
+3 dBu (for 0.1% THD at 50 Hz)
+5 dBu (for 0.1% THD at 1k Hz)
Connectors :
XLR male: Pin 2 Hot / Pin 3 Cold / Pin1 Ground
Channels :
1 nr.
Frequency response :
10 Hz to 100 kHz, +0dB/-1 dB
Distortion (THD) :
S/N Ratio :
Controls :
On/off, Pad -10, Pad -20, Gnd Lift, Ø inv.
Notes :
CMR > 60 dB
Phase distortion +14° at 20 Hz, -6° at 20k Hz
Weight
1.00 kg
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DB1A includes an MU-METAL core transformer able to reduce phase and harmonic distortion to a minimum, with noticeable improvement of the linear phase even on very long cables. The audio integrity is guaranteed by low-noise, low-consumption IC for balancing the signal, able to handle very low-impedance loads. The input section features JACK and XLR connectors with link possibility and a PAD of up to 30 dB that permits very high-level signal inputs to be used.
Technical Specifications
Type :
1 channel active DI
Width :
215 mm(8.465inch )
Height :
50 mm(1.969inch )
Depth :
125 mm(4.921inch )
Weight :
1 kg(2.205lb )
Rack Units :
1/2 rack unit.
Removing the two molded sides and attaching two units, with the supplied brackets, you can mount two by two DI boxes into a standard 19¿ rack.
Power Supply :
Phantom Power: +24 volts DC to +48 volts DC
External AC/DC adaptor: +9 volts DC with link
Standalone/Standby: 9 volt PP3 type battery.
Current drain :
Inputs :
Two Parallel 1/4' jack connectors and one parallel XLR connector (unbalanced).
Input Impedance :
1M Ohm (pad at 0 dB)
47k Ohm (pad at -10/-20 dB)
44k Ohm (pad at -30 dB)
Input Levels :
+5 dBu (pad at 0 dB)
+15 dBu (pad at -10 dB)
+25 dBu (pad at -20 dB)
+35 dBu (pad at -30 dB)
Outputs :
XLR male: Pin 2 Hot / Pin 3 Cold / Pin1 Ground
Output Levels :
into 600 Ohms or greater
+3 dBu (for 0.1% THD at 50 Hz)
+5 dBu (for 0.1% THD at 1k Hz)
Connectors :
XLR male: Pin 2 Hot / Pin 3 Cold / Pin1 Ground
Channels :
1 nr.
Frequency response :
10 Hz to 100 kHz, +0dB/-1 dB
Distortion (THD) :
S/N Ratio :
Controls :
On/off, Pad -10, Pad -20, Gnd Lift, Ø inv.
Notes :
CMR > 60 dB
Phase distortion +14° at 20 Hz, -6° at 20k Hz
DOD AC 275 Active Direct Box with Switchable Ground Lift and Attenuator-2nd Hand-
The AC 275 is an active, phantom powered direct box. Unlike a passive DI where the frequency response of the signal can be altered depending on the connected impedance, an active DI buffers the input signal with an amplifier. This assures that the sound source will reach the mixer balanced and noise-free.
Housed in a cast alloy chassis, the AC 275 supplies two, high impedance, unbalanced 1/4" jacks and one low impedance balanced XLR jack. It operates with battery or phantom power.
Key Features
?
Active direct box
?
Allows a hi impedance unbalanced source to directly feed a low impedance balanced input
?
Flat frequency response
?
Connects guitar pickups, microphones or electric instruments to a recording or P.A. console without audio quality loss
With added functionality and enhanced audio performance, the AR-133 has been
designed to be more affordable for musicians, studios and PA companies.
The unit includes phantom power and battery supplies as standard. Should the
phantom power from the console fail or be accidentally switched off, the AR-133
automatically switches over to the internal 9V battery providing uninterrupted use.
The unit is housed in a rugged aluminium extrusion case, with robust polyurethane
end-cheeks which give the AR-133 a very distinctive look.
Input connectors are both 1/4" jack sockets and an XLR socket, the latter meaning
that the AR-133 can be used to convert unbalanced signals to a balanced output on
XLRs throughout.
The arched case allows cables to run back underneath the unit from the end for neat
cable management.
Input attenuation is 0, -20 or -40dB, making the box suitable for instrument, line or
amplifier levels on inputs. On the output side, a ground-lift switch is provided for quick
solutions to ground-loop problems.
The AR-133 uses an enhanced version of the same audio path as the AR-116, now
regarded by many people as a reference standard. The sound quality is legendary,
particularly on acoustic and bass guitars.
Numerous applications can be satisfied by the AR-133. For example, as well as the
traditional guitar use, the AR-133 can be used with keyboards, DJ consoles, amplifier
outputs, and other electronic sources.An additional bonus is the ability to use the AR-133
as an active balancing device.
Input Section
Input Impedance 1M Ohm (pad at 0dB)
47k Ohm (pad at -20dB)
47k Ohm (pad at -40dB)
Max Input Level +9dBu (pad at 0dB)
+29dBu (pad at -20dB)
+49dBu (pad at -40dB)
Connectors Two Parallel 1/4" jack connectors and a parallel
XLR connector (unbalanced)
Jack: Tip Hot (+ve)
Sleeve Ground
XLR: Pin 2 Hot (+ve)
Pin 1 & 3 Ground
Output Section
Output Transformer Balanced
Max. Output Level +8dBu into 600 Ohms or greater
Connector XLR3-32 or equivalent
System Performance
Distortion (THD) < 0.005% at 1khz, 0dbu output
Noise < -105db unweighted, 22hz-22khz, rms*
Frequency Response 30Hz to 20kHz, +0dB/-1dB
General
Main/Standby battery 9 volt PP3 type, preferably alkaline.
Current drain on phantom - less than 7.5mA
on battery - less than 2mA.
Phantom Power +20 volts DC to +48 volts DC
Weight 650 gms, excluding batteries.
Overall Dimensions 59 mm x 124 mm x 143 mm
(2.3" x 4.9" x 5.6“)
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
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
User´s Manual
LD Systems LDI02
DI Box active
Active DI box in a sturdy metal housing (aluminium/steel) with protective corners, silver-blue metallic, internal battery (9 V flashes during operation) is switched off automatically when phantom power is used (LED permanently illuminated),
extremely low battery consumption. Battery: 9 V block (not included).
Product type DI Boxes
Channels 1
Inputs 2
Input connectors 6.3 mm Jack , XLR
Max. input level + 10 / + 30 dBu dBu
Input impedance 1 M Ohm(s)
Outputs 1
THRU outputs/channel 1
Output connectors XLR
Frequency response 20 - 20.000 Hz
THDIndicators Power
Controls ground lift , Power
Operating voltage +48 V phantom power , 9 V block
Cabinet material metal
Cabinet surface painted
Width 135 mm
Depth 128 mm
Height 53 mm
Weight 0,645 kg
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