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User Manual for Radial Engineering Headload Guitar Amp Load Box Click to enlarge the picture
Contents of the user manual for the Radial Engineering Headload Guitar Amp Load
- Product category: Amplifier Accessories 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 Amplifier Accessories
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User manual for the Radial Engineering Headload Guitar Amp Load 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 8 ohm Headload Guitar Amp Load Box from Radial Engineering is a combination load box and attenuator that is capable of handling up to 130W RMS of continuous power and peaks of 180W. Inserted between the head and cabinet, it allows the guitar amp to be driven hard while lowering the output level to reduce the sound pressure on stage or provide the means for quiet recording in the studio. This enables you to optimize the tone from your guitar amplifier without having to perform at ear-blistering levels.
The 100% discrete fan-cooled design begins with a series of cement encrusted, epoxy-coated copper resistor coils that are controlled via a six-position rotary switch to set the desired power reduction from 100% down to 20%. A trim control provides fine adjustment when below 20%. The Headload output can be turned off for quiet on-stage use, for recording, or for practicing using the built-in headphone amplifier.
In order to ensure greater consistency from gig to gig, the Headload is equipped with a Radial JDX Reactor direct box. This captures both the signal from the head and the reactive load from the speaker cabinet for a more natural tone. For engineers that prefer to combine a direct feed with a microphone, the Headload has also been equipped with a Radial Phazer phase adjustment tool. This lets you time-align the JDX direct feed with the microphone to deliver very natural tones, or create over-the-top effects when pushed to extreme. The JDX direct output has a six-position voicing switch to select from various cabinet emulation presets and may be fine-tuned using a two-band EQ to tame overly bright amps. - Combination speaker attenuator and simulator
- Safely handles up to 130W RMS (180 peak)
- Radial JDX Reactor and Phazer for direct recording
- Delivers full-range tone from your amp at low volume
In the Box Radial Engineering Headload Guitar Amp Load Box (8 Ohms) Power Supply Power Cable Handle Limited 3-Year Transferable Warranty Table of Contents
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Technical parametersRadial Engineering R800 7058 Specs | Audio Circuit Type | Reactive attenuation circuit with active equalization | | Frequency Response | 90 Hz @ -3 dB to 4 kHz @ -6 dB | | Equalization | Low: ±9 dB @ 80 Hz
High: ±9 dB @ 6 kHz | | Resonance | Low & High Resonance:
60 Hz & 6.5 kHz, shelving filter 6 dB/octave slope
+12 dB at 20% load setting
+9 dB at 40% load setting
+6 dB at 60% load setting
+3 dB at 80% load setting
None at 100% load setting | | Headphone Output Power | 400 mW into 32 ohms | | Headphone Impedance | 32 ohms or higher recommended | | Gain | -40 dB typical | | Intermodulation Distortion | <0.05% | | Noise | -104 dBu unweighted | | Input Impedance | 8 ohms | | Output Impedance | 250 ohms | | Impedance | Load: 8 ohms | | Total Harmonic Distortion | <0.05% | | Gain Reduction | Variable from 100 to 0% | | Power | Radial ±15 V, 400 mA power supply | | Construction | 14-gauge steel chassis & outer shell | | Finish | Durable powder coat | | Operating Conditions | Humidity: Use in dry locations only
Operating Temperature: 41 to 104°F (5 to 40°C) | | Dimensions | 6.1 x 12.0 x 3.5" (15.4 x 30.5 x 8.8 cm) | | Weight | 8.0 lb (3.6 kg) |
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