www.radialeng.com PRO DI Direct Box PRO D2 Stereo Direct Box User Guide Radial Engineering 1638 Kebet Way, Port Coquitlam BC V3C 5W9 tel: 604-942-1001 • fax: 604-942-1010 email: info@radialeng.com • web: www.radialeng.
PRO DI AND PRO D2 USER GUIDE TABLE OF CONTENTS PAGE Introduction ..............................................................................1 Features ..................................................................................2 Making connections .................................................................3 Re-amping with the PRO DI ....................................................4 Frequently asked questions ....................................................
True to the Music INTRODUCTION The Radial PRO DI is a passive direct box. This means that unlike active direct boxes that either require a battery or power of some sort to make them work, your PRO DI does not need any power at all. It is ‘plug & play’ easy-to-use. A direct box is primarily used to convert a high impedance instrument signals to a low impedance balanced mic-level signal, which can then be processed like a microphone and driven through long cables without introducing noise.
True to the Music FEATURE SET The Radial PRO DI is a very simple yet effective device. It features a ¼” input connector that connects to the source or instrument, a ¼” thru-put connector that connects the instrument to the amplifier and finally, a low impedance balanced XLR output connector that provides a direct and transformer-isolated signal to the mixer. A -15dB input PAD switch and output ground lift switch are also available to process the signal.
True to the Music MAKING CONNECTIONS Using the Radial PRO DI is easy. Before connecting, start by making sure all volume levels are set to zero and the audio system is turned off. This will avoid any loud pops in your sound system that could cause system damage. The PRO DI does not require any power and it will ignore the phantom power from your mixer, if it is turned on. Begin by connecting the instrument or source device to the INPUT connector on the PRO DI.
True to the Music RE-AMPING WITH YOU RADIAL PRO DI The term re-amping comes from taking a pre-recorded guitar track and sending it back through a guitar amplifier to reamplify it, and then re-record it again. This trick has been used since the 1950s with artists as diverse as Les Paul, the Beatles and Steely Dan. It’s simple to do: plug your electric guitar into the PRO DI and send the thru-put to your guitar amplifier.
True to the Music can have more ‘reach’ and enhance the sound of some instruments. Passive DIs tend to sound more ‘down to earth’ and less colored than active DIs. The real advantage of passive DIs over active ones is that they eliminate hum & buzz caused by ground loops by using a transformer to isolate the input signal from the output. Can I use a piezo pickup with the PRO DI? If your piezo equipped instrument has it's own pre-amp and battery you can use the PRO DI with excellent results.
RADIAL ENGINEERING Ltd. (“Radial”) warrants this product to be free from defects in material and workmanship and will remedy any such defects free of charge according to the terms of this warranty. Radial will repair or replace (at its option) any defective component(s) of this product (excluding batteries, finish and wear and tear on components under normal use) for a period of three (3) years from the original date of purchase.
