| Content | The DTI (Dual Transformer/Isolater) from ART is a high quality, totally passive audio interface that uses a pair of high performance transformers to totally separate input and output signal grounds, thereby isolating two systems and reducing hum and ground-loop noise.
The unit's audio transformers have an extremely flat and wide frequency response and can handle high signal levels while maintaining an isolated balanced output. This gives the DTI a very clean and neutral sound with a wide variety of signal sources. The transformers are wound for 1:1 unity gain and are designed to be used with impedances from 600 Ω to 100k Ω.
Versatility Useful for making a "clean" interface between a computer based audio workstation and a speaker system, isolation on long cable runs in a fixed installation, isolation of a signal source from any recording equipment, or in many cases, just a safer connection between two audio systems.
Connectivity Provides XLR, 1/4" phone and RCA type phono connections on all inputs and outputs. This allows the unit to easily fit into virtually any audio system and be the clean patch point between all types of systems.
Construction A compact black anodized, all aluminum case and passive design allow the DTI to provide years of trouble free service in Live Sound, Permanent/Fixed Install, D.J. and virtually any PA application.
ART DTI specs
| Frequency Response |
10Hz-50kHz +/-.5dB@+4dBu |
| Total Harmonic Distortion |
.01% Typical @ 1kHz, +18dBu, |
| 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“) |
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
|
The Stewart ADB-1 is a single channel active direct box that allows an unbalanced source to
directly feed a balanced input. Musical instruments, tape recorders, VCRs and sound projectors
can be run "direct" to the mixing console, avoiding unnecessary degradation of sound quality.
The ADB-1 operates on either phantom power or a 9-volt battery.
FEATURES:
Flat response
Low distortion
Low noise
Wide dynamic range
No transformer
RF protection on input and output
Switchable ground isolation
Flush mounted slide switches |
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 | Portable Rock Power The GI100 works like a standard DI box. You can use it to tap into your amplifier's speaker outputs, even high-powered rigs with ratings of up to 3,000 Watts. Or, just plug your guitar directly into the GI100, switch on the unbelievably realistic 4x12 cabinet simulation designed by renowned engineer Juergen Rath, and you've got rock royalty-sized tone in a package the size of a cheeseburger! You may never mic your speakers again! Ready for Action The DI100 sounds amazing, and it comes equipped to meet the most common needs of gigging and recording, as well as the travel in between. There's a ground lift switch that eliminates typical ground loop problems, and when phantom power is connected, this DI box automatically shuts off the internal battery. The DI100 is housed in cool-looking red aluminum and features stackable, oversized rubber corners. Direct Perfection The DI100 goes way beyond the typical abilities of a DI box to give you the sound and performance you'd expect from a super-charged vintage half-stack, plus enough power to have your audience wondering where you hid the amp. And no need to worry, you can definitely afford it, with money left over for strings and things! Drop by your nearest BEHRINGER dealer and introduce your axe to the guitar-loving DI100.
Product Features:
- Professional and multi-purpose direct injection box for stage and studio applications
- Authentic 4 x 12" speaker emulation by renowned amp designer Jurgen Rath
- Provides impedance and signal matching for the direct connection of instruments to mixers and amplifiers
- Ultra-flat frequency response due to renowned BEHRINGER OT-1 transformer
- Internal battery automatically shuts off when phantom power is applied
- Allows direct connection to speaker outputs with up to 3,000 Watts
- Switchable input attenuation allows input levels of up to +50 dB
- Ground Lift switch eliminates typical ground loop problems
- ¼" TRS and gold-plated XLR connectors
- Ultra-rugged, road-suitable aluminum case
- Stackable oversized rubber corners
- High-quality components and exceptionally rugged construction ensure long life and durability
User's Manual |
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