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Radial Pro DI

Passiv D.I.-boks for studio og scene

Radial Pro DI
Varenr.: 100890
Lagerstatus: På lager
kr 1 230 inkl. mva. kr 984 eks. mva.
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Passiv DI-boks fra Radial, med firmaets patenterte og egenutviklede isolasjonstrafo. En passiv DI-boks blir ikke bedre enn dette. I studio eller på scenen; - en sann problemløser, og ikke minst en D.I. som ikke farger eller degraderer lyden i instrumentet ditt. Finnes også som to-kanals utgave for keyboardister.

High-quality Direct Box from Radial!
The Radial ProDI is a high-quality, passive mono direct box that's perfect for use with acoustic guitars, bass guitars, electric pianos, and synthesizers. The ProDI's custom transformer helps to deliver the highest performance possible, virtually eliminating issues with noise. And, as with all Radial DI boxes, the ProDI is incredibly reliable and easy to use — just plug in your mono instrument and instantly eliminate ground loops, while enjoying a rich, full sound. If you need the same excellent quality, in a stereo version, Radial also offers a stereo version of the ProDI, the ProD2.

Passive vs. Active DI
The Radial ProDI and ProD2 (stereo version) are full-range passive direct boxes. Active direct boxes employ electronic circuits to change the impedance from hi-Z to lo-Z and balance the signal. Passive DIs instead employ a simple passive transformer to do the work. Active DIs require batteries, 48V phantom-power or external power supplies to power their circuits, while passive transformer-equipped direct boxes do not require any power to perform their task. The advantage of a transformer over typical active circuits can be summarized as "a great device to reduce system noise" in a sound system. To accomplish the task of noise elimination, the Radial ProDI and ProD2 features first-class transformers and require no batteries or power supply.

Custom Isolation Transformer
The Radial ProDI is equipped with a custom-made audio transformer, which provides exceptional signal handling without saturation. More importantly, the ProDI's custom transformer has extremely low phase distortion in the critical bass and mid regions. The ProDI's transformer provides 100% isolation, to eliminate hum- and noise-causing ground loops, while maintaining signal integrity. Inside the ProDI you'll also find isolated XLR connectors, to eliminate chassis ground potential, as well as a military-spec PC board, with full surface ground plane to reduce susceptibility to RF noise. The result is exceptional clarity and definition, at an attractive price point.

Really Easy to Use
The best feature of the ProDI is "plug and play" ease of use. All you do is connect the instrument to the 1/4" inputs, the 1/4" through jack to the stage amplifier(s) or mixer and the XLR output to the mixing console and you are done. Any distortion? Hit the -15dB pad. Any noise? Just depress the ground lift switch. You will find that with acoustic guitars and basses, the natural tone of the instrument will shine through with a smooth and musical rendering. For electrically powered devices, such as keyboards, the ProDI will immediately eliminate troublesome ground loops while delivering solid dynamics, with a full rich sound.

Solid Construction
Look inside a ProDI and you'll find the build quality and components to be of only the highest professional standards. Radial's proven construction methods and materials ensure years of trouble-free service — able to withstand the rigors of the most demanding, high-use professional environments. Radial pioneered the use of its innovative "book cover" design, which provides a protective zone around the switches and connectors that keeps the components safe. The 14-gauge welded I-beam inner chassis and 14-gauge outer shell found in the ProD2 and ProDI greatly reduce the possibility of torque stresses being applied to the PC board. Stress on circuit boards causes broken and intermittent solder joints, a common cause of failure in commercial rental and other high-use environments. A full-bottom no-slip rubber pad works double-duty by providing protection from electrical shock and making sure these DI's stay put.

Features:

  • Full range passive direct box
  • Isolation transformer eliminates noise
  • Very low harmonic and phase distortion
  • Compact and rugged design
  • Ideal for live sound and studio.
  • Isolated XLR connector eliminates chassis ground potential
  • Custom audio transformer on input provides 100% isolation to eliminate hum- and noise-causing ground loops, while maintaining signal integrity.
  • Military-spec PC board, with full surface ground plane to reduce susceptibility to RF noise
  • High grade switches — long life, high cycle for reliable performance
  • 14-gauge steel welded I-beam construction makes it virtually impossible to torque the PC board
  • -15dB pad reduces the level going in from loud sources that could overload the circuit and cause distortion
  • Book-end design creates a protective zone around the switches & connectors, indestructible 14-gauge steel construction
  • Full no-slip rubber bottom pad provides mechanical isolation, electrical insulation and prevents unit from sliding around
  • Balanced male XLR output connector, AES standard with pin-1 ground and pin-2 hot
  • Lift switch lifts the ground to pin-1 on both channels.
  • Heavy-duty baked enamel finish for excellent durability

Look inside a ProDI and you will find the build quality and components to be of only the highest professional standards. Radial's proven construction methods and materials ensure years of trouble-free service. The ProDI and ProD2 feature audio transformers custom made to our exacting standards to achieve the highest possible audio quality while maintaining an affordable price. The ProDI and ProD2 easily outperform all other direct boxes in their price range in both signal integrity and features.

1. Isolated XLR connectors to eliminate chassis ground potential.
2. Custom audio transformer on input provides 100% isolation to eliminate hum and noise causing ground loops while maintaining signal integrity.
3. Military spec PC board with full surface ground plane to reduce susceptibility to RF noise.
4. High grade switches - long life, high cycle for reliable performance.
5. 14-gauge steel welded I-beam construction makes it virtually impossible to torque the PC board.

Frequency Response:
20Hz to 20kHz (+/-2.5dB 20Hz to 20kHz (+/-2.5dB
Harmonic distortion: 0.01% (20Hz to 20kHz) 0.01% (20Hz to 20kHz)
Phase distortion:
1 degree at 1Khz
8 degrees at 20Hz
1 degree at 1Khz
8 degrees at 20Hz
Common mode rejection:
-90dB @ 60Hz -90dB @ 60Hz
Input impedance:
140kOhms 100kOhms
Output impedance:
600 Ohms 600 Ohms
Input pad:
-15dB -15dB
Size (W x H x D):
2.75” x 4.25” x 1.75"
70mm x 108mm x 44mm
3.25"x 5”x 1.875"
83mm x 127mm x 48mm
Weight:
1.2lbs / .54kg 1.95lbs / .9kg
Construction:
14-gauge steel chassis & shell, baked enamel finish 14-gauge steel chassis & shell, baked enamel finish
Options:
none J-Rak rack shelf
Warranty: 3 year limited warranty 3 year limited warranty