DB1P is a single-channel passive DI BOX equipped with the same type of MU-METAL core transformer used in the DB1A, which provides minimum distortion, linear phase and hum-free transmission also on very long cables. Thanks to the input stage design, DB1P can accept also signals coming directly from the power output of instrument amplifiers, PAD […]
DB1P is a single-channel passive DI BOX equipped with the same type of MU-METAL core transformer used in the DB1A, which provides minimum distortion, linear phase and hum-free transmission also on very long cables. Thanks to the input stage design, DB1P can accept also signals coming directly from the power output of instrument amplifiers, PAD up to 60 dB. A specially designed input filter is also available for cutting any hiss or buzz noise coming from acoustic or electric guitar and basses.
Technical Specifications
Type :
1 channel passive 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.
Inputs :
Two Parallel 1/4′ jack connectors and one parallel RCA connector (unbalanced).
Input Impedance :
120 kOhm (pad at 0 dB)
47 kOhm (pad at -20/-60 dB)
44 kOhm (pad at -40 dB)
Input Levels :
+15 dBu (pad at 0 dB)
+35 dBu (pad at -20 dB)
+55 dBu (pad at -40 dB)
+75 dBu (pad at -60 dB)
Outputs :
XLR male: Pin 2 Hot / Pin 3 Cold / Pin1 Ground
Output Levels :
into 1 KOhm or greater
-5 dBu (for 0.1% THD at 50 Hz)
+5 dBu (for 0.1% THD at 1k Hz)
Channels :
1 nr.
Frequency response :
10 Hz to 100 kHz, +0 dB/-1 dB
Distortion (THD) :
S/N Ratio :
Controls :
Pad -20, Pad -40, Gnd Lift, Filter (12′ emulator)
Notes :
Insertion loss 20 dB
CMR > 100 dB
Phase distortion 0° at 20 Hz, 0° at 20 kHz.
Rear View
Weight
0.30 kg
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DB1P is a single-channel passive DI BOX equipped with the same type of MU-METAL core transformer used in the DB1A, which provides minimum distortion, linear phase and hum-free transmission also on very long cables. Thanks to the input stage design, DB1P can accept also signals coming directly from the power output of instrument amplifiers, PAD up to 60 dB. A specially designed input filter is also available for cutting any hiss or buzz noise coming from acoustic or electric guitar and basses.
Technical Specifications
Type :
1 channel passive 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.
Inputs :
Two Parallel 1/4' jack connectors and one parallel RCA connector (unbalanced).
Input Impedance :
120 kOhm (pad at 0 dB)
47 kOhm (pad at -20/-60 dB)
44 kOhm (pad at -40 dB)
Input Levels :
+15 dBu (pad at 0 dB)
+35 dBu (pad at -20 dB)
+55 dBu (pad at -40 dB)
+75 dBu (pad at -60 dB)
Outputs :
XLR male: Pin 2 Hot / Pin 3 Cold / Pin1 Ground
Output Levels :
into 1 KOhm or greater
-5 dBu (for 0.1% THD at 50 Hz)
+5 dBu (for 0.1% THD at 1k Hz)
Channels :
1 nr.
Frequency response :
10 Hz to 100 kHz, +0 dB/-1 dB
Distortion (THD) :
S/N Ratio :
Controls :
Pad -20, Pad -40, Gnd Lift, Filter (12' emulator)
Notes :
Insertion loss 20 dB
CMR > 100 dB
Phase distortion 0° at 20 Hz, 0° at 20 kHz.
Rear View
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.
Phantom or battery powered in a rugged steel chassis
The ARX DI-PLUS 2 represents another major step forward in active direct boxes. Packaged in a single channel stand-alone format, the DI-PLUS 2 represents a fresh look at active stereo 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. Accurate Left and Right channel level matching keeps the stereo image centred.
Level control The DI-PLUS 2 features two high impedance unbalanced inputs on the front panel, running to balanced XLR outputs on the rear. A a global Pad switch drops inputs by 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 2 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 2 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 2 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 Left and Right XLR connectors, ground lift switch, battery check switch and LED, plus phantom power On LED 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,clarity and stereo information of the original sound source transferred to the mixing console. The ARX DI-PLUS 2 provides a rugged, no-compromise solution to all stereo 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 +12 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 .0018%, 1KHz .0028%, 10KHz .0056% Frequency Response 20Hz to 20KHz, ± 0.2 dB Gain through Unit: 6dB (Pad switch out) Pad Switch: Global -20 dB attenuation Input and Loop Out Connectors Insulated jacks (!!!Note that Channel A Input connector switches the unit on when a plug is inserted. Remove plug when storing to avoid battery drain!!!) Output Connectors 3 pin XLR. Wired Pin 1 Ground, Pin 2 + Hot, Pin 3 - Cold. Global 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
Standard active DI box. Can be operated with 9 V batteries or 48 V phantom power. High-impedance input; higher output level than with a passive DI box. Active circuitry allows for high input impedance ( 1 meg. ohm) and higher input sensitivity (typical difference between in and out -4 dB). Maximum output impedance with phantom power operation +10 dB. Output: transformer balanced. The special "floating ground" circuitry enables ground lift even during phantom power operation. Metal case 110 x 73 x 42 mm.
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
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
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Active direct box
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Allows a hi impedance unbalanced source to directly feed a low impedance balanced input
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Flat frequency response
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Connects guitar pickups, microphones or electric instruments to a recording or P.A. console without audio quality loss
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