True to the Music
JDX User Guide
Radial Engineering
8
FREQUENTLY ASKED QUESTIONS
Q: Can I mount the JDX on the back or inside my amp/speaker
cabinet?
A: Yes, the Radial J-Clamp allows you securely mount the JDX
to almost anything.
Q: Does the JDX provide a load for the amp to drive.
A: No. The JDX is not a load box. For safe operation a loudspeaker
must be connected to the SPEAKER OUT jack.
Q: Can I use the JDX with a load box or power attenuator?
A: Yes. The load box takes the place of a loudspeaker and pro-
vides a load for the amp to drive.
Q: Can I leave the JDX connected to my amp when I’m not
using it?
A: Yes, as long as a loudspeaker is connected the amps output
will fl ow thru the JDX to your speaker even when the JDX power
supply is disconnected.
Q: Can I use the JDX with a bass amp?
A: Yes. Keep in mind the JDX has a max power input of 300
watts. Bass amps that exceed this rating can damage the JDX.
Try combining the signals from the JDX and a standard direct box
to record bass guitar for a new sound.
Q: My combo amp doesn't have amp and speaker jacks on
the back. Can I still use the JDX.
A: Yes. Solder a 1/4" plug onto your amps speaker cable to con-
nect to the FROM AMPLIFIER jack. Then make a short jumper
cable to connect the TO SPEAKER jack to the speaker terminals.
Or contact a qualifi ed amp tech to make these changes.
Q: Can I also use the JDX like a standard direct box.
A: No. The JDX is an amp DI exclusively.
Q: What does the speaker emulation sound like?
A: The active analog speaker fi lter circuit is a compromise between
a closed-back 4x12 and an open-back 2x12 speaker cabinet.
Q: Will the JDX sound exactly like my amp?
A: Nothing is 100% transparent. We feel the JDX comes closer
than anything else and sounds terrifi c.
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