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Summary of Contents for Gradient R-5A
- Page 1 R-5A USER GUIDE...
- Page 3 GRADIENT R-5A Congratulations on your purchase of the Gradient R-5A loudspeakers which represent the latest in loudspeaker technology. The Gradient R-5A speaker is handcrafted and individually tested in Finland using the best possible materials available. It will provide you with enjoyable musical experiences for years to come.
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Page 4: Installation
Attach the special rubber feet (3pcs / speaker) to the base of the bottom part of the speaker. · connecting the loudspeaker cable For fast, easy and high quality connecting, Gradient R-5A is equipped with a professional four-pole speakON connector and cable housing. If you are not using dedicated Gradient cables, a speakON cable connector has to be connected to your cables. - Page 5 INSTALLATION · assembling the top part of the speaker Before assembling the top part it is good idea to find a preliminary location for the speaker in the room and install the bottom part of the speaker there. While holding the top part, connect the cable connector of top part to the XLR-connector of the bottom part.
- Page 6 The farther from the speakers the listener goes, the more room colourations will be added to the sound. Thanks to directivity properties of Gradient R-5A it can be listened to at much longer distance without loosing the accuracy and spectral balance.
- Page 7 USE AS A PANEL SPEAKER The Gradient R-5A speakers can be positioned in a free space as any panel speakers. In this case it is recommendable that the distance from the rear wall will be minimum one meter (3'). In theory increasing the distance from the rear wall will allow the speaker to go lower in frequency.
- Page 8 USE AS A PANEL SPEAKER It is also possible to direct the bodies as in the Fig. 2. In this case the low notes are radiated parallel to the side walls and the midrange & treble drivers are towards the listener. Try different distances (1m...2m) from the rear wall and turn the speakers.
- Page 9 AGAINST THE WALL The Gradient R-5A has an unique feature for a panel speaker: it can also be positioned against the wall. The longer wall of the room is preferable. When used against the wall the bottom parts are directed as in the Fig.
- Page 10 AGAINST THE WALL If the speakers are placed too close to the side walls the lowest notes will be attenuated. The wall positioning gives a unique feature of adjusting the bass level. When the speakers are taken 5cm...10cm (2''...4'') of the wall, the bass level will be attenuated by about 2dB.
- Page 11 THE MIXED POSITIONING The Gradient R-5A speakers can also be positioned in such a way that one speaker is against and another will of the wall (Fig. 5). Fig. 5. A mixed positioning where one speaker is attached to the wall and the other to an open space.
- Page 12 The woofer section of the Gradient R-5 can be rotated and directed in many ways, to minimize undesirable standing waves in the listening area. This ability to "tune" out standing waves in the bass is unique.
- Page 13 A BRIEF DESCRIPTION OF TECHNOLOGIES · acoustic waveguide at high frequencies The Mg-Al dome tweeter placed at the apex of the cone uses midrange diaphragm as a waveguide to control treble dispersion. The resulting radiation pattern at high frequencies is therefore very similar to that of the cardioid midrange.
- Page 14 Due to the nature of open baffle design the bass section of the Gradient R-5A will need equalization. This is done in the XO- AMP unit. The lower limit of the R-5A is set to reach to 20Hz, -3dB. · electronic bass level control...
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Page 15: Other Remarks
OTHER REMARKS · connecting cables to speakON cable connector If you are not using the dedicated Gradient speaker cables, connect the speakON cable connector to the cable as follows: 1 - = bass minus 1+ = bass plus 2 - = midrange/treble minus... -
Page 16: Technical Specifications
TECHNICAL SPECIFICATIONS Model: Gradient R-5A Loading principle: Bass: open baffle (f<200Hz), Midrange: acoustic resistance enclosure (f>200Hz) Radiation patterns: dipole (bass), cardioid (midrange & treble) Frequency response: 20-25000Hz +/-3dB Drivers: 2×300mm long throw woofer, 1x176mm pre-coated reed- paper midrange, 1x25mm coaxial Al/Mg-dome... -
Page 17: Quality Control
The inspection marking and the serial number are located at the base of the bottom part of the speaker. Gradient Labs Ltd Kisällintie 8 FI-06150 Porvoo Finland www.gradient.fi COPYRIGHT © 2022 GRADIENT LABS. ALL RIGHTS RESERVED.
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