JD6™ Using & Applications

This short guide is written for those who are experienced with pro-audio and direct boxes. Complete details about the many features built into the JD6 and information about connecting it to your system can be found in the manual (PDF download).

The Radial JD6 is truly 'plug and play' easy to use. Each channel follows convention with a standard input jack to connect the instrument, a thru jack to feed the local amplifier and a balanced Lo-Z XLR output to feed the concert snake system and/or mixing console.

Setup is easy: Connect the instrument to the input. Connect the thru to the local amplifier if at hand. Then connect the XLR to the mixer or preamp. Begin to play.

 
Single channel connections using front panel jacks
Single channel connections using front panel jacks.
Single channel connections using rear panel jacks
Single channel connections using rear panel jacks.
 
 

As the JD6 is designed for rack-mounted keyboard rigs in live touring or connection to a studio patch bay, i/o connectors for all channels are located on the rear panel. This allows the technician to keep all wires hidden and out of the way from the front panel controls. For added convenience channels 1 and 2 also feature front panel connectors.

If by chance you are hearing any distortion, depress the -15dB pad. This will reduce the input sensitivity and should eliminate any audible distortion. In the unlikely situation where you may encounter hum or buzz, try depressing the ground lift. This lifts pin-1 on the XLR output which will disconnect the ground path between the input instrument and the source mixer.

 

Extra Features on Channels 1 and 2

To add more versatility, channels 1 and 2 are equipped with a series of extra features. These are equally effective for use in the studio as they are in a live performance environment.

RCA Inputs

These handy inputs make it easy to bring -10dB consumer level devices such as CD players, iPods®, video playback decks and computers into the Radial JD6 and then send a balanced signal to the PA or recording system. The Jensen® transformers are particularly useful in smoothing out the graininess that is common while eliminating ground loops.

Stereo to Mono Mix/Merge

Sometimes, trying to bring stereo tracks to mono is difficult. The JD6 offers this facility with a built-in passive summing mixer. When the MIX/MERGE switch is engaged the input and thru jacks will accept left/right stereo signals and sum them to mono. This can be particularly beneficial in live setups where mixer channels may be limited. This helpful feature eliminates the need to reprogram synths to mono.

Low Pass Filter

If you encounter high frequency hiss, channels 1 and 2 are equipped with a filter that gently rolls off highs above 8kHz. This is primarily used with older analog vintage keyboards that may generate more noise than today's higher fidelity digital synths.

Switching Jacks

Both the input and thru-put connectors on the JD6 front panel are wired in such a way that when you insert a ¼" cable, the JD6 will re-route the signal from the rear panel to the front. This is designed to allow greater speed when recording by essentially adding two inputs that are shared. A good example may be when recording a bass guitar; keyboards could be patched in using the rear panel and simply connecting the bass via the front panel jack puts it in line, no rerouting is required.

 

The JD6 with 4 Stereo Sources

 
The JD6 with 4 Stereo Sources

In this setup all four devices connect in true stereo through the JD6 to the PA system. The SELECT switch is used to toggle the inputs on channels 1 & 2 between the ¼" phone and the RCA jack. Using the SELECT switch makes it easy to switch between two stereo devices - in this case a master keyboard and the laptop computer.

 

The JD6 on Stage

 
The JD6 on Stage

Use channels 1 and 2 to patch in a stereo master keyboard via the front panel and connect your rackmount synths and modules using the rear panel connectors.

 

Using the JD6 in the Studio

 
The JD6 in the Studio

The JD6 is great to patch in all kinds of instruments, not just keys! It features the same fabulous audio signal path as the world renowned Radial JDI, only six times better!