Radial JDI Passive Direct Box
Item: RKJDI
The Radial JDI direct box is the world’s ? nest passive DI. The JDI has been optimized to handle extreme transients without introducing distortion or coloration to the sound.
Because of the transformer, the JDI provides 100% isolation between the instrument input side and the balanced output, eliminating hum and buzz caused by ground loops. Ground loops are most prevalent when interfacing equipment with AC power such as keyboards and guitar ampli? ers. Most passive DIs sound terrible because they use inexpensive iron or steel core transformers. This causes phase shift at various frequencies known as group delay, which has the effect of making bass sound indistinct and lack punch and causes mid-range to smear. This makes mixing more dif?cult.
The Radial JDI employs a Jensen transformer with a nickel-laminated core. Nickel does not retain a memory or polarity. This has the net effect of reducing phase distortion, improving linearity and lowering harmonic distortion. Fix the problems; you get great sound.
The Radial JDI does not require 48V phantom-power or a battery. You just plug in and play. The JDI is also available in stereo (Radial JDI Duplex) and in 6 channels (Radial JD6) or may be rackmounted using the Radial J-Rak for up to 8 units in 2 RUs.
Radial JDI Passive Direct Box
Features:
- -15dB PAD
- MERGE FUNCTION: Turns the input
and thru jacks into a passive mixer
to sum stereo signals to mono. This
saves valuable inputs on the mixer
INPUT and THRU: Jacks connect
from the instrument and to the
instrument ampli?er
- FULL BOTTOM PAD: Improves
electrical isolation and keeps the JDI
from moving around on busy stages!
- XLR: Balanced 600? mic-level
output for runs to 1000 feet without
appreciable noise
- POLARITY REVERSE: ?ips the
polarity from pin-2 to pin-3 on the XLR.
- GROUND LIFT disconnects the
ground path to the transformer at the
XLR output
- BOOK-END DESIGN: creates a
protective zone around the jacks
and switches
- PARALLEL SPEAKER: Interface
option introduces a second -30dB
pad with band-pass ? lter to emulate
a 12” guitar speaker
- Jensen nickel core transformer
for distortion-free signal transfer
and 100% isolation.
- BOOK-END DESIGN: Creates a
protective zone around the jacks
and switche.
- MU-METAL SHIELD: Protection
against radio frequency and electromagnet
interference