www.radialeng.com J33 Phono Preamp DI User Guide Radial Engineering 1638 Kebet Way, Port Coquitlam BC V3C 5W9 Tel: 604-942-1001 Fax: 604-942-1010 email: info@radialeng.com Radial Engineering is a division of C•TEC (JP CableTek Electronics Ltd.
True to the Music Radial J33 Phono Preamp DI Users Guide Table of Contents Page Introduction ...................................................................... 2 Feature Set ...................................................................... 2 Input Panel ...................................................................... 4 Output Panel ................................................................... 5 Making Connections ........................................................ 6 FAQ ........
True to the Music INTRODUCTION Since the advent of the compact disc, the use of long-playing records has become so sparse that it has become difficult to find a hi-fi receiver that is equipped with a phono input. With literally millions of albums floating around the world, a need has emerged to capture these recordings and transfer them to today’s digital formats.
True to the Music To connect to professional balanced systems, the Radial J33 is equipped with a pair of male XLR connectors. The active balanced drivers convert the signal to a low impedance (600Ω), microphone level, stereo signal. The J33’s balanced XLR outputs can drive turntable signals well over 100 meters (328 feet) without appreciable loss or noise.
True to the Music INPUT PANEL FEATURES 1 2 3 4 6 5 7 1. LED power indicator For left and right channels. Illuminates when the 15VDC power supply is connected or when 48V phantom power is applied from a mixing console. 2. Rumble filter Applies a high pass filter (bass roll-off) when pushed in. 3. Gound lug Attatches to the turntable ground wire. 4. 3.5mm stereo output jacks -10dB (consumer level) stereo output for direct connection to computer sound cards, laptops or any device with a 3.5mm input.
True to the Music OUTPUT PANEL FEATURES 8 11 9 10 8. Bookend design 14 gauge steel outer shell creates protective zone around connectors and switches and wraps around a welded case with I-beam construction for maximum durability. Finished in tough baked enamel. 9. Left and right XLR outputs Balanced low impedance (600Ω) microphone level outputs. Connects to mic input on mixing console. 10. 15VDC power supply connection The 15VDC power supply is connected here for powering the J33.
True to the Music MAKING CONNECTIONS Using the Radial J33 is easy. Before connecting, start by making sure all volume levels are set to zero and the audio system is turned off. This will avoid any loud pops in your sound system that could cause system damage. Begin by connecting the turntable outputs to the J33 using the RCA connectors and securing the ground lead from the turntable to the ground lug on the J33.
True to the Music other direct boxes and microphones, thus enabling the J33 to be used along with microphones in snake systems, mic splitters and through console mic preamps. You can use any or all the output connectors at once, enabling you to, for instance, connect your turntable to the J33, the -10dB RCA line-level outs to a DJ mixer and the balanced XLR outs to a PA system.
True to the Music FAQ What is an RIAA pre-amp and why do I need one? When vinyl albums are produced, a preset EQ curve is introduced. This EQ curve is the RIAA phono response curve and has been a standard since the introduction of the long play record or LP. The RIAA response curve was developed to get better performance out of the medium. When the record is played back the signal needs to be restored by applying the exact opposite EQ curve as the one introduced during production.
True to the Music J33 BLOCK DIAGRAM J33 Specifications Frequency response 20Hz ~ 20KHz ±3dB Total harmonic distortion 0.005 % @ 1KHz RIAA curve +19.5dB @ 20Hz -19.65dB @ 20kHz Reference: 0dB @ 1kHz RIAA deviation +/- 0.5dB maximum Max.
RADIAL ENGINEERING 3 YEAR LIMITED WARRANTY RADIAL ENGINEERING (a division of J.P Cabletek Electronics Ltd.) warrants this product to be free from defects in material and workmanship to the original owner and will remedy any such defects free of charge according to the terms of this warranty.
