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
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
Inline Transformer IA-2
The model IA-2 line matching transformers !S designed to properly match a low impedance signal to a low impedance source. The advantage of "ground lift" switching allows to optmize hum problems.
Technical Data Frequency response 20 Hz - 20 KHz + 1 dB Impedance 600 : 600 Ohm THD K3 50 Hz = 0.5 % Level < + 6 dBm Weight 100 g Dimensions diameter 17 mm, lenght 115 mm
At dbx, when we do something, we do it right. So when we decided to create our new direct injection boxes, we didnʼt settle for the same old tired approach to direct box design. With our dbx name on the line, how could we? One look at our new dB10 Passive and dB12 Active direct boxes will tell you that these are clearly different. With their bullet-proof construction, and extraordinary audio performance to rival their looks, finally thereʼs a direct box worthy of the dbx name.
Utilizing custom dbx mu-metal-shielded audio transformers, high-quality Neutrik® connectors, and low-noise circuitry preserves the sonic integrity and true characteristics of the signal source. Both boxes include a pad switch that accomodates instrument, line and even speaker level signals. Take even more control of your sound by utilizing the polarity invert switch to set the phase relationship between the direct and mic'd sound.
As a professional, you donʼt have time for interference, so weʼve included a ground lift switch to solve potential hum and buzz problems due to ground loops. And between the combined shielding of the cast metal chassis and the custom-wound transformer, you can be doubly assured of a clean signal free from interference. All of this sits atop a solid, stable footprint, that will keep the box from being dragged around the stage, and the unique contoured underside allows secure stacking of multiple units.
So whether you need to control the level, placement in the mix, or overall characteristics of 4 independent signals or control the gain leveling on a couple of stereo pairs, the dbx dB12 is for you.
Thru Output: 1 parallel connection from input jack
Connector: 1/4" jack
Type: Unbalanced, RF filtered
Main Output: 1 line level
Connector: XLR male jack
Type: Balanced
Impedance: 150 Ohm typical
Max Output Level: 0dBu
PERFORMANCE
Transformer: Custom dbx mu-metal-shielded
Frequency Response: 20Hz to 20kHz, +/-2.5dB
Noise:
THD:
GENERAL
Dimensions: 5.82" L X 5.44" W X 2.20" H (148 x 138 x 56mm)
Weight: 1.4 lbs / 0.65 kg
Note: Specifications subject to change without notice.
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
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“)
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