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User Manual for Radial Engineering Firefly Single-Channel Active Tube Direct Box Click to enlarge the picture
Contents of the user manual for the Radial Engineering Firefly Single-Channel Active Tube
- Product category: Direct Boxes 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 Direct Boxes
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User manual for the Radial Engineering Firefly Single-Channel Active Tube 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 Firefly from Radial Engineering is a single-channel active direct box that features a Class-A front end, and a 12AX7 tube stage to add warmth. A variable low-cut knob enables you to optimize the sound of a variety of instruments, such as electric and acoustic basses, electric and acoustic guitars, mandolins, viola, and more. The Firefly features two 1/4" Hi-Z inputs with independent Trim knobs, and it's possible to connect both active and passive instruments. A "Drag Control" terminal gives you the ability to adjust the load correction so you can get the best tone from a magnetic pickups. - A button on the front panel enables you to switch between the A and B inputs
- The separately available JR2 footpedal makes it possible to switch inputs with your feet, and mute the outputs
- The dedicated 1/4" Tuner output stays active when muted
- The Aux 1/4" output can be set to Pre or Post: Pre sends a clean signal directly from the instrument, Post applies both the tube and Insert loop effects
- The 1/4" Insert jack makes it possible for both connected instruments to share the same effects pedals
- The balanced XLR output is transformer coupled to eliminate hum and noise
- A handle is provided which can be removed for rack mounting
- The front knobs are protected by upper and lower protruding metal edges
UPC: 676101040414 In the Box Radial Engineering Firefly Single-Channel Active Tube Direct Box Power Cable Limited 3-Year Warranty Table of Contents
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Technical parametersRadial Engineering R800 2020 Specs | Type | Audio circuit type: 100% discrete class-A FET with tube drive | | Input Connections | 2x Hi-Z 1/4" connectors, selectable A or B | | Pad | Yes, variable input pad | | Output Connectors | 1x balanced XLR
1x 1/4" Hi-Z buffered, pre or post tube & effects insert loop | | Inserts | Yes, 1/4" TRS insert loop, wired tip-send, ring-return | | Polarity | 180° | | Ground | Ground Lift: Pin-1 at the XLR | | Gain | 20 dB (Maximum) | | Signal to Noise Ratio | 85 dB @ +4 dB | | Dynamic Range | >100 dB | | Controls | 2x Trim Knobs
1x A/B Select Button
1x Drag On Button
1x Low Cut Knob
1x Level Knob
1x Load Adjust Terminal
1x Recessed Polarity Switch
1x Recessed Ground Lift Switch
1x Recessed Pre Switch | | Mute | Yes, on all outputs except Tuner (requires separately available JR2 footswitch) | | Low Cut Filters | Variable from 5 Hz to 500 Hz at -3 dB | | Drag Control | Yes, load correction for magnetic pickups | | Frequency Response | 20 Hz to 20 kHz | | Noise Floor | -98 dB at unity gain | | Equivalent Input Noise | -101 dB | | Maximum Input | Variable from -12 dB to +20 dB | | Total Harmonic Distortion | 0.15% from 20 Hz to 20 kHz | | Intermodulation Distortion | 0.3% | | Input Impedance | Drag On: Variable 22k to 500k
Drag Off: 3.9 meg-Ω | | Output Impedance | 150Ω (nominal) | | Power | 5-pin XLR, +/-16V & 48V, 1600mA | | Specialties | 12AX7 Tube drive circuit | | Dimensions | Without handle:
5.75 x 8.25 x 1.75" (146 x 210 x 45 mm)
With handle:
5.75 x 8.25 x 2.75" (146 x 210 x 70 mm) | | Weight | 3.95 lb (1.80 kg) | | | | Package Weight | 6.65 lb | | Box Dimensions (LxWxH) | 13.6 x 8.8 x 4.7" |
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