DIRECT BOXES (DIs)


DIRECT-JT


w / Jensen Xfmr

DIRECT2-JT


Dual DI w / Jensen Xfmr

DIRECT2


Dual DI

DIRECT4


4 Channel DI

DIRECTOR


with Amp / Spkr Switches

EDB1


"CONNECT" Series Economy DI

HOTBOX


Premium Active DI

HOTBOXQUAD


4 Channel Hotbox

IMP 2


Basic DI

MULTIDIRECTOR


4 Channel DIRECTOR

MULTISNAKE


Snake - 4 DIs + 4 Mics

MULTISNAKE10


Snake - 6 Mic/DI Combos + 4 Mics

pcDI


for PCs, CDs, Ipods, etc.

podDI


Sum / Mix DI for Ipods, PCs, CD Players, etc.

podMIX


Line / Mic Mixer / DI



What is a DI?
Direct boxes are often referred to as "DI" boxes. This stands for "Direct Injection" as their main purpose is to convert unbalanced and/or high impedance instrument signals into a format suitable for direct connection to a mixing console - without the use of a microphone.

In 1981, Whirlwind developed and produced the first commercially available Direct Box in the audio industry.

Read about it here.



A DI performs several functions:
  • It converts a high impedance signal to a low impedance signal (although it will also accept a low impedance signal from a preamp, keyboard, active pickup or other electronic device).

  • It converts an unbalanced signal to balanced.

  • It reduces a strong instrument or line level signal (and sometimes even speaker level signal) to a mic level signal suitable for connection to the mic input of a mixing console.

  • It isolates electronic equipment on stage from the mixing console, which can help eliminate interference and noise caused by DC interaction or ground loops.
Read more about DIs in our tech article:
A Direct Box can be in-DI-spensible.
DIRECT-JT
w / Jensen® Transformer



Our top-of-the-line passive DI features the Jensen JT-DB-EPC transformer - world renown for wide frequency response and superior noise rejection characteristics.

Extruded aluminum housing with recessed switches provides expected Whirlwind durability.

Features include:
  • 1/4" input jacks can be used as "INPUT / THRU" or they may be combined with the "COMBINE" pushbutton to safely sum stereo feeds to a single channel.

  • "FILTER / OFF" button engages a filter that emulates the frequency response of a microphone placed in front of a 12" speaker.

  • "PAD" button engages 15dB pad for reducing hot input levels.

  • "REV / Ø" button reverses the polarity from pin 2 hot to pin 3 hot for correcting non-standard equipment and mis-wired cables or for creating special effects.

  • "LIFT / GND" button to help eliminate hum and buzz.



Model # - DIRECT-JT
Impedance Ratio: 200k:1.5k
Freq. Response: 20Hz-20kHz re:1kHz, -0.08dB / -0.07dB
THD @ 20Hz: 0.036%
THD @ 1kHz: less than 0.001%
-3dB BW: 100kHz




DIRECT-JT


DIRECT-JT OUT


DIRECT-JT
HOTBOX®

Our top-of-the-line DI is an active direct box that operates with batteries or phantom power.

Its super-clean front-end circuitry delivers extremely wide and flat frequency response and will reveal hidden harmonics from guitars and basses with high-output passive pickups.


Features include:
  • 1/4" parallel wired in/out jacks
  • Ground Lift switch to help eliminate hum and buzz
  • Input switch selects between OFF, ON or ON with 20 dB PAD engaged for connecting to strong line or speaker level signals.
  • LED indicates "ON" status
Model # - HOTBOX
Input Impedance: 1 Meg Ohms
Frequency Response: 20Hz-150kHz ±3dB
Residual Output Noise: -115dB
Maximum Input Level: +15dBm - battery, +20dBm - 48V phantom. Add 20dBm with pad engaged
Power Requirements: (2) 9V batteries or 48V phantom
Battery Life: approximately 300 hours
Current Draw: approximately 4.0mA DC
HotBox
Click Here For Larger Size Picture


HotBox End
MULTIDIRECTOR




Click Here For Larger Size Picture


Four Director DIs in one convenient 1U rack package. The MultiDirector is the touring sound standard for passive DIs.

Model # - MLTDIR
Impedance Ratio (input to output): 133:1
Level Change (input to output): -20dB (padout), -40dB (pad in)
Frequency Response: 20Hz-20KHz ±1dB

Winner of Pro Audio Review's Par Excellence Award
" . . . built like a tank!"

pcDI®

The Whirlwind pcDI is perfect for interfacing the outputs of CD players, computer sound cards, iPODs® / MP3 players, tape decks, etc. with professional, balanced, low impedance equipment.

This unit contains two separate DIs - input your signals with one 3.5mm (1/8") mini TRS stereo jack (tip=left +, ring=right +, sleeve=common negative) or two sets of color coded RCA phono type input and through jacks. Output is via corresponding color coded XLRs.

Each section features:
  • Color coded RCA phono in / through jacks
  • Color coded XLR output jacks
  • Ground Lift switch to help eliminate hum and buzz
  • Stereo/Mono switch for stereo operation or safely combine both inputs into a mono signal sent to both outputs
  • 20dB pad switch for connection to "hot" input signals
  • Uses Whirlwind's TRHL-M transformers with metal shield


Model # - PCDI
Impedance Ratio (input to output, per channel): 133:1
Frequency Response: 20Hz-20kHz ±1dB
Level Change (input to output): -20dB (pad out), -40dB (pad in)
DIRECT2™

The DIRECT2 combines features found on two of our DIRECTOR ® direct boxes in one unit.
Perfect for converting unbalanced signals from stereo keyboards, acoustic guitar preamps, CD and tape players, computer sound cards, etc.

Each section features:
  • 1/4" parallel wired in/out jacks
  • Ground Lift switch to help eliminate hum and buzz
  • -20dB pad switch for connection to "hot" input signals
  • Uses Whirlwind's TRHL-M transformer with metal shield
The input and output grounds of each section are isolated from each other. This allows the DIRECT2 to be used as if it were two completely separate DIs without fear of creating ground loop interaction.

Model # - DIRECT2
Impedance Ratio (input to output per channel): 133:1 Frequency Response: 20Hz-20kHz ±1dB
Level Change (input to output): -20dB (pad out), -40dB (pad in)

Click Here For Larger Size Picture




DIRECT2-JT

The DIRECT2-JT is Whirlwind's premium Dual Direct box, built with Jensen transformers.
Perfect for converting unbalanced signals from stereo keyboards, acoustic guitar preamps, CD and tape players, computer sound cards, etc. when lowest noise and widest frequency response are required.

Each section features:
  • 1/4" parallel wired IN / THRU jacks, or may be converted to dual inputs with handy COMBINE buttons.
  • -20dB pad button for connection to "hot" input signals
  • Ground lift button to help eliminate hum and buzz
  • Uses Jensen JT-DB-EPC transformers
The input and output grounds of each section are isolated from each other. This allows the DIRECT2-JT to be used as if it were two completely separate DIs without fear of creating ground loop interaction.



Model # - DIRECT2-JT
Impedance Ratio: 133:1
Frequency Response: 20Hz-20kHz re:1kHz, -0.08dB / -0.07dB
THD @ 20Hz: 0.036%
THD @ 1kHz: less than 0.001%
-3dB BW: 100kHz
DIRECT4

The DIRECT4 combines features found on four of our DIRECTOR ® direct boxes in one unit.
Perfect for converting unbalanced signals from multiple instruments, keys, acoustic guitar preamps, CD and tape players, computer sound cards, etc.

Each section features:
  • 1/4" parallel wired in/out jacks

  • Ground Lift switch to help eliminate hum and buzz

  • Filter switch to help reduce amplifier noise and hiss

  • -20dB pad switch for connection to "hot" input signals

  • Uses Whirlwind's TRHL-M transformer with metal shield
The input and output grounds of each section are isolated from each other. This allows the DIRECT4 to be used as if it were four completely separate DIs without fear of creating ground loop interaction.

Model # - DIRECT4
Impedance Ratio (input to output): 133:1
Frequency Response: 20Hz-20kHz ±1dB
Level Change (input to output): -20dB (pad out), -40dB (pad in)

Click Here For Larger Size Picture
IMP® 2

Built rugged on the inside and outside, this is the world famous DI found in pro systems everywhere. The IMP 2 converts a line or instrument level unbalanced signal to a low impedance mic level balanced signal.

Features include:
  • 1/4" parallel wired in/out jacks
  • Ground Lift switch to help isolate hum and buzz
  • Uses Whirlwind's TRHL transformer
It's the ideal direct box for anyone requiring professional quality and durability in an economical package.

Model - IM2
Impedance Ratio (input to output): 133:1
Frequency Response: 20Hz-20kHz ±1dB
Level Change: (input to output): -20dB
MULTISNAKE10
podMIX


The podMIX is a passive mixer that combines a microphone with a stereo, line level audio source for connection to a single channel input of a sound system.

Use it to combine your microphone with a CD or MP3 player, computer, DJ mixer, etc., for paging and announcing over background music in banquet halls, sports arenas and party houses.

Accepts the stereo line inputs via 1/8" stereo jack or dual RCA phono jacks and sums them with the microphone into a single balanced mono output. These are wired in parallel and can be used as a loop thru from one to the other.

  • A variable attenuator on the line input allows level matching and mixing between the music source and the microphone.

  • Mute switches on both the mic and line inputs provide convenient on / off control of each signal.

  • Works with both dynamic and condenser microphones and passes phantom power from the output to the mic input.

  • Features a ground lift switch on the line input to help eliminate hum and buzz.

  • Can also be used as a high quality DI box.