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Gradient 1.4 Owner's Manual

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1.4
OWNER'S MANUAL

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Summary of Contents for Gradient 1.4

  • Page 1 OWNER'S MANUAL...
  • Page 3 GRADIENT 1.4 Congratulations on your purchase of the Gradient 1.4 loudspeakers which represent the latest in loudspeaker technology. The Gradient 1.4 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.

  • Page 4: Installation

    If necessary, the standard feet can be replaced by M8 spikes. · connecting the loudspeaker cable For fast, easy and high quality connecting, Gradient 1.4 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 Gradient 1.4's directivity properties it can be listened to at much longer distance without loosing the accuracy and spectral balance. The top part of the Gradient 1.4 is built into so called Acoustic Resistance Enclosure. Such a design eliminates the harmful backward radiation. It is still recommended not to position the speaker too close to the walls.
  • Page 6 INSTALLATION Room resonances have different amplitudes at different places in the room. This means that besides the loudspeaker placement also the positioning of the listening spot has equal importance. Near the wall all room resonance modes are emphasized and heard most effectively.
  • Page 7 Fig. 1. The most accurate stereophonic illusion is obtained if the listener situates at equal distances to both loudspeakers. Ideally the listener and the speakers form an equilateral triangle. Fig. 2. Example of positioning a multi-channel system with five Gradient 1.4 speakers.

  • Page 8: Connections To The Amplifier

    CONNECTIONS TO THE AMPLIFIER Gradient 1.4 can be connected single-wired, bi-wired or bi- amped. With the speaker, we supply high-quality cables in different lengths or, alternatively, a speakON cable connector that can be connected to any speaker cables having wire size 6mm maximum.
  • Page 9 Similarly connect the black and blue lead to negative or minus terminal of the amplifier. Connect both speakers in the similar way. If you are not using the dedicated Gradient speaker cables, connect the speakON cable connector to the cable as follows:...
  • Page 10 2. Similarly connect the blue lead to negative or minus terminal of the amplifier 2. Connect both speakers in the similar way. If you are not using the dedicated Gradient speaker cables, connect the speakON cable connector to the cable as follows:...
  • Page 11 THE CHOICE OF AMPLIFIER The amplifier power output needed depends on the listening level, the size of the room and many other factors having influence on the room acoustics. It is recommended to use an amplifier of 2 x 50W ... 250W / 8 ohms. Also higher powered amplifiers can be used with caution due to their increased potential for speaker damage.

  • Page 12: Power Handling

    Gradient loudspeakers can handle high powered peaks of short duration. Music of varying dynamics (even huge) can be listened to at a high volume level. If the music sounds...
  • Page 13 A BRIEF DESCRIPTION OF TECHNOLOGIES · bass reflex system at low frequencies Low frequencies below 200Hz are reproduced by bass reflex enclosure tuned at 27Hz. Large crossection area of the reflex tunnel guarantees no breathing noise even at high sound levels.
  • Page 14 A BRIEF DESCRIPTION OF TECHNOLOGIES · acoustic waveguide at high frequencies The Al/Mg-dome tweeter placed at the apex of the cone uses midrange diaphragm as a waveguide to control treble dispersion. resulting radiation pattern high frequencies is therefore very similar to that of the cardioid midrange.

  • Page 15: Technical Specifications

    TECHNICAL SPECIFICATIONS Model: Gradient 1.4 Loading principle: Bass: Bass reflex Midrange: Acoustic Resistance Enclosure Radiation patterns: sphere (bass), cardioid (midrange & treble) Frequency response: 45-20000Hz +/-2dB, 27Hz -6dB Impedance: 4 ohm Sensitivity: 87dB/2,83V/1m Recommended amplifier power: 50-250W Drivers: 1x220mm long throw woofer,...

  • Page 16: 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 © 2023 GRADIENT LABS. ALL RIGHTS RESERVED.