Q: Will the Radial JDX affect the impedance on my amp?
A: No. The JDX is designed to capture the powerful signal coming from the head and the back EMF from the speaker and tap off what it needs before being re-amplified and sent to the sound system. This has no affect on the amp load.

Q: Can I use the JDX on a bass amp?
A: Yes – absolutely. It will produce the character of tone you would expect from 12” drivers which can prove to be quite good. Keep in mind many bass amps use 10” drivers such as the venerable Ampeg SVT.

Q: Can I use the JDX without a speaker cabinet?
A: Not alone. You must use some sort of load box to absorb the energy coming from the head. Without a load of some sort, the JDX would overheat and explode and make a mess and because this would void your warranty, you will be upset for days!

Q: Will the JDX sound OK with a load box?
A: Some load boxes are better than others, but so far, we have never tried one that sounds as good as a speaker cabinet. Load boxes simply take the energy from the amp and convert it to heat. This is not the same as driving a speaker.

Q: Can I use the Radial JDX like a regular DI box?
A: No. It is designed specifically to handle high output levels from guitar amplifiers. Plugging a guitar directly into the JDX will not produce sufficient signal to drive the JDX.

Q: Can I use the balanced output of the JDX to drive another guitar amp?
A: Yes! This ‘trick’ can lead to creative new tones where you are essentially using one amp like a distortion pedal before the signal is amplified by the second amp. You will need an XLR to ¼” cable wired like this: XLR pin-1 and pin-3 to ¼” ground (shield), XLR pin-2 to ¼” tip.

Q: Will the JDX sound exactly like my head and amp?
A: No. The JDX simulates the sound of your amp and speaker and will generate a close facsimile. But don’t be fooled. Nothing will ever completely replace the sweet sound of a vintage Delux or the spatial feel of a JCM800 half stack turned to 11.