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Reverse DI Box
Users frequently attempt to connect a DI box in reverse in order to feed a balanced signal into an unbalanced input. Because of mismatching, however, this leads to unsatisfactory results. With the PDIR01 (DI-REVERSE), we offer a box that provides a perfect technical solution to the problem without using adapters.
- Type: passive
- Number of channels: 1
- Number of inputs: 1
- Input connections: XLR/f
- Max. input level: +6dBu
- Input impedance: 2 kohms
- Number of outputs: 1
- Output connections: 6.3 mm jack
- Max. output level: +6dB
- Output impedance: 2 kohms
- Frequency range: 20Hz - 20kHz
- Transformer balanced: yes
- Transformation ratio: 1:1
- Controls: Ground lift
- Housing material: Sheet steel
- Housing surface: powder-coated
- Width: 110 mm
- Depth: 35 mm
- Height: 39 mm
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Behringer DI-400P High-Performance Passive Direct Injection Box Introducing the Ultra-Compact DI-Boxes from BEHRINGER There are times when you will want to connect certain sound sources straight to other audio gear, be it for a live performance or a studio session. A direct connection between audio equipment can be a challenge though: technical problems crop up that?ll corrupt the signal. The DI400P lets you connect instruments or amplifier outputs. It converts any unbalanced signal to a balanced signal and eliminates unwanted noise. With its high-performance transformer, it also allows you to use very long cables without the loss of high frequencies. This is the sort of medicine that?ll cure headaches in your studio or on stage.
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Παθητικό DI box με ground lift, αναστροφή φάσης, έξοδους XLR και καρφί 1/4'' (thru), pad 3 θέσεων στην είσοδο για σήματα επιπέδου instrument/line/speaker
- Premium Performance
- Rugged Design
- Stackable Chassis with Durable Rubber Foot
- Gold-plated Neutrik® XLR Connector
- Premium Chrome Toggle Switches
- Hi-Z 1/4" Input Jack
- Parallel 1/4" Thru Jack
- Transformer Isolated
- Premium Shielded Custom dbx Transformer
- Balanced XLR Lo-Z Output
- 3-Way 0/20/40 dB Pad Switch
- Flat/High-Cut Filter Switch
- Output Polarity Invert Switch
- Ground Lift Switch
- 4 Year Warranty!
dB10 Specifications INPUT SECTION
Input: 1 instrument/line/speaker level
Connector: 1/4" jack
Type: Unbalanced, RF filtered
Impedance: 150k Ohm typical
Max Input Level: +20dBu (0dB pad)
+40dBu (20dB pad)
+60dBu (40dB pad)
OUTPUT SECTION
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: | 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. |
Tube-buffered DI-Box DI-1000
The Tube-Buffered DI-Box DI-1000 allows the extraction of all the musical details of musical interfaces without degrading the sound. This can only be achieved by providing a very high input impedance to avoid any loading of instrument pickups.This design approach allows seemingly infinite headroom to preserve the real dynamic range of the interfaced instruments.A vacuum tube enables all these goals to be achieved without any compromises in sound quality.The sonic difference between a standard DI-Box and the Tube-Buffered DI-Box is comparable to the musical resolution difference between a standard microphone and a studio microphone.One of the best transformers, the very transparent sounding JENSEN JT-DB-E, was chosen providing complete ground isolation. The parameters of this transformer, like frequency response, phase response, group delay and geadroom capabilities, play a vital part in the performance of this DI-Box. Technical Specifications Input The signal of the instrument is directly fed to the tube circuit with > 20 MOhms input impedance to prevent any signal degradation, inevitable in traditional designs. Buffered Output“ The second stage of the vacuum tube is used to buffer the signal and lower the output impedance to < 8 kOhms. This unity gain output allows for cable runs of 10 meters without loosing high frequency information. Boost circuit The boost circuit increases the signal send to the output transformer by 15 dB. This may be useful for instruments with extremely low output, but decreases headroom capability to 6 Volt rms. Under these circumstances the signal may be clipped, concerning the output transformer?s signal, which gives you 2nd harmonic tube-like distortion. This distortion normally does not occur - but is sometimes desirable, being the reason for this special feature. Unity circuit The unity circuit feeds a low distortion unity gain signal to the JENSEN output transformer. This gives the best possible sound quality. Ground-lift“-Switch This front panel mounted switch allows complete ground and electrical isolation between the direct injection box and the console or recording device.
Mechanical Specifications Cabinet 2 mm stainless steel Front- and rear-panel 1,5 mm stainless steel lasercut and photo-chemically etched Dimensions 185 x 100 x 40 mm Vibration insulation 4 high-compliance rubber-elements Operating Voltage 220/110 V AC, selectable via rear panel mounted switch. The fuse is easily accessible from the rear panel. IEC mains connector with optional fixture. Construction details Double sided glass fibre contacted PCB with 70 mm copper plating. 1% metal film resistors and the finest polypropylene capacitors are used in the signal path. MIL type Switchcraft jacks and high performance switches ensure flawless operation. The power supply is optimised via measurement quality toroid transformer and a low impedance design to ensure the lowest possible noise. Through a double sided PCB all parts are roadworthy secured. A waterclear blue LED perfects the aesthetics of the DI box.
Technical Data Input impedance > 20 MOhm Output impedance180 Ohm at 1 kHz Frequncy response 20 Hz - 20 kHz (-0,1 dB) 5 Hz - 120 kHz (-3 dB) THD at 0 dBv 0,06% at 20 Hz 0,04% at 1 kHz 0,035% at 20 kHz Signal to Noise Ratio 86 dB Tube ECC 83/7025 A - military E 83 CC optional Output transformer JENSEN JT-DB-E Polarity Pin 2 Hot , AES/IEC -Standard Max. Input voltage > 30 V peak |
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
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