RADIAL J33
User Guide

True to the Music
What should I do if I depress the rumble �lter 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 keyboards 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 linelevel 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 connecting 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 connector. 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-� system? Great! The J33 is a low noise preampli�er and will out-perform the typical RIAA preamp built into consumer hi-� equipment.

Radial Engineering

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J33 User Guide