User guide

True to the Music
8
Radial Engineering
J33 User Guide
What should I do if I depress the rumble filter and still have
feedback?
Try using an isolation pad such as the Primacoustic IsoPlane
(www.primacoustic.com). This will reduce the vibration going
into the turntable and help eliminate low frequency resonant
feedback.
Can I use the Radial J33 for other devices such as key
-
boards or computer sound cards?
No. The J33’s input is pre-equalized with the RIAA curve. This
curve would make any other source sound bad, plus these line-
level devices would overload the J33’s sensitive input circuit and
cause distortion.
Why is there no ground lift on the J33?
Because the ground lift would disconnect the pin-1 on the XLR
which in turn would shut off the phantom power.
Can I rackmount the J33?
Yes. The Radial J-Rak will allow as many as 8 direct boxes to
be rack-mounted in two RUs. Go to the Radial website for more
details on the J-Rak. (www.radialeng.com)
What should I do if the LEDs do not light up?
Check that the external power supply is connected or, if con-
necting to a mixer through the J33's XLR outputs, make sure the
phantom power has been turned on at the mixer.
Can I record an album directly to my computer sound card
using the J33?
Yes. Most sound cards are equipped with a 3.5mm input con
-
nector. Connect the line-level output of the J33 to the computer
and you should be set to go. Sound card input levels vary, so
watch for distortion as the output of the J33 is quite hot. Your
computer sound card software should allow you to pad down the
input should this be a mic-level input.
How will the J33 sound with my hi-fi system?
Great! The J33 is a low noise preamplifier and will out-perform
the typical RIAA preamp built into consumer hi-fi equipment.