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User Manual for Radial Engineering J 4 Balanced Signal Driver - Stereo Preamplifier Click to enlarge the picture
Contents of the user manual for the Radial Engineering J 4 Balanced Signal
- Product category: Level Matching Transformers Radial Engineering
- Brand: Radial Engineering
- Description and content of package
- Technical information and basic settings
- Frequently asked questions – FAQ
- Troubleshooting (does not switch on, does not respond, error message, what do I do if...)
- Authorized service for Radial Engineering Level Matching Transformers
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User manual for the Radial Engineering J 4 Balanced Signal contain basic instructions
that need to be followed during installation and operation.
Before starting your appliance, the user manual should be read through carefully.
Follow all the safety instructions and warnings, and be guided by the given recommendations.
User manual is an integral part of any Radial Engineering product,
and if it is sold or transferred, they should be handed over jointly with the product.
Following the instructions for use is an essential prerequisite for protecting
health and property during use, as well as recognition of liability on the part of the manufacturer
for possible defects should you make a warranty claim. Download an official Radial Engineering user manual in which you will find instructions on how to install, use, maintain and service your product.
And do not forget – unsuitable use of a Radial Engineering product will considerably shorten its lifespan!
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Product description The Radial J+4 Balanced Signal Driver is a stereo preamplifier designed to accept unbalanced, low output devices such as instruments, computers, or CD players and boost the signal to a balanced +4dB level.
The J+4 includes a variety of input connectors to accommodate most audio sources; a stereo pair of both 1/4" and RCAs, and a single 1/8" stereo input. The control panel is easy to operate, consisting only of a stereo level control, a high pass filter, and a ground lift. The boosted signal then outputs from a stereo pair of balanced XLRs.
The J+4 features 100% discrete components for optimal signal transfer. Noise is eliminated by combining the advantages of active signal buffering with transformer isolation, resulting in better than 95dB signal to noise ratio. This also ensures hum and buzz caused by ground loops, along with spurious noise from clocking, will not pollute the signal path.
The Radial J+4 is built to handle the extreme rigors of the professional audio world. It delivers exceptional sonic performance, plenty of headroom and ultra low noise making it the ideal addition to any audio system with low output sources. - Boosts Signals to +4dB Balanced Line Level
- The J+4 takes a -10dB consumer level audio product, such as an iPod or a DJ mixer, and boosts the signal to +4dB commercial level without adding noise or distortion.
- Versatile Input Options
- The J+4 has input connectivity for dual 1/4", dual RCA, and a single 1/8" stereo input.
- Transformer Isolated
- Transformer isolated circuitry eliminates noise caused by ground loops.
UPC: 676101039692 In the Box Radial Engineering J+4 Balanced Signal Driver - Stereo Preamplifier 3-Year Limited Warranty, Transferable Table of Contents
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Technical parametersRadial Engineering R800 8015 Specs | Circuit Type | Active -10 dB to +4 dB line converter, transformer isolated | | Number of Channels | Stereo | | Frequency Response | 20 Hz to 20,000 Hz (± 2 dB) | | Dynamic Range | 102 dB | | Maximum Input Level | +17 dBu @ 1 kHz, 1% THD+N | | Total Harmonic Distortion | 0.004% @ 1 kHz, +10 dBu output | | Phase Shift | 0.5° @ 100 Hz; 4° @ 20 Hz | | Input Impedance | 10k Ohms, unbalanced | | Output Impedance | 1.6k Ohms, balanced | | Transformer | JS2 Radial custom transformer | | HPF | -3 dB @ 100 Hz (12 dB/octave) | | Lift | Disconnects XLR pin-1 at isolated output | | Input Connections | 1/4" x2, RCA x2, 1/8" Stereo x1 | | Output Connections | XLR (pin-2 hot) x2 | | Construction | 14 gauge steel chassis & outer shell | | Finish | Baked enamel | | Power | Passive, no power required | | Dimensions (W x H x D) | 3.3 x 5.0 x 2" (84 x 127 x 48 mm) | | Weight | 1.55 lbs (0.70 kg) | | | | Package Weight | 2.55 lb | | Box Dimensions (LxWxH) | 10.8 x 4.8 x 2.75" |
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