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Radial JDI users Direct Injection & Re-amp Boxes
Old 13th March 2008
  #1
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bit mangler's Avatar
 

Radial JDI users

The silkscreen says 600 ohms output impedance & the manual says 150 ohms.Anybody know what the actual output impedance is?
Old 13th March 2008
  #2
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Quote:
Originally Posted by bit mangler View Post
The silkscreen says 600 ohms output impedance & the manual says 150 ohms.Anybody know what the actual output impedance is?
My guess is 600 ohms, since that's what the Radial web site states. For example: Radial JDI features & fuctions
Old 14th March 2008
  #3
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bit mangler's Avatar
 

Check this out though...2nd main heading.
Usually isnt the standard 600ohms for line level & 150ohms for mic level
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Old 14th March 2008
  #4
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Quote:
Originally Posted by bit mangler View Post
The silkscreen says 600 ohms output impedance & the manual says 150 ohms.Anybody know what the actual output impedance is?
The impedance of the JDI's output is 150 ohms. It is designed to terminate into a device that loads it with 600 ohms or more, like most mic pres. In this way it appears to a preamp like an ideal microphone.
Old 14th March 2008
  #5
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lambro's Avatar
my passive JDI says "balanced 600 ohm" on the xlr out
Old 14th March 2008
  #6
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Does anyone know how a JDI reacts to phantom power on its input? I'm thinking of picking one or two up and sometimes I get to a live gig where some dumbo has P48 on all inputs..


Herwig
Old 14th March 2008
  #7
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Quote:
Originally Posted by DeadPoet View Post
Does anyone know how a JDI reacts to phantom power on its input? I'm thinking of picking one or two up and sometimes I get to a live gig where some dumbo has P48 on all inputs..


Herwig
Phantom power on its input? The input is a 1/4" TS jack. Only the XLR output uses 3 conductors (required for phantom). Do you mean phantom on the output? Its output is transformer isolated, so you shouldn't have any problems.
Old 16th March 2008
  #8
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I'm sorry, wrong terminology .. I meant output of course.

I played yesterday on a p.a. system that had a J48 for me (bass) and a JDI for the acoustic guitar. The passive one didn't sound as good as the guitar players' U5 he normally brings and I liked the J48 on my Stingray5 (soundcraft K? desk on Westone 2way in-earing)


Herwig
Old 16th March 2008
  #9
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lambro's Avatar
I sold my U5, as a DI I was always left flat.

Most guys I know or have seen that use a U5 in their bass rig tend to slap and they like some of the presets for that, but really I dont miss it at all

as a DI, the JDI sounds the most natural to me.

Now acoustic guitar is another story altogether. Never been thrilled with DI & Acoustic guitar. If I was gigging with my acoustic I would be go route of a micro condenser like the DPA stuff, like the 4061
Old 16th March 2008
  #10
Gear Head
 

Quote:
Originally Posted by DeadPoet View Post
Does anyone know how a JDI reacts to phantom power on its input? I'm thinking of picking one or two up and sometimes I get to a live gig where some dumbo has P48 on all inputs..


Herwig
There's a Jensen transformer on its output, so no DC stands a chance of getting through.
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