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Instructions Pioneer, Modèle TAD-R1

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One channel of each amplifier drives the low frequency section and the other channel drives the high frequency section, as shown in Figure 10. Connect one set of wires and amplifier channel to the bottom set of binding posts (bass driver-specific network). Then connect a second set of wires and the other amplifier channel to the top binding posts (CST-specific network). Take care to connect both (+) wires to the (+) amplifier terminals and both (–) wires to the (–) amplifier terminals. HF LF PEAKERS OUTPUT INPUT OUTPUT INPUT Ch.1 Ch.2 OUTPUT Terminal PanelT Amplifier (rear) Pre-Amplifier (rear) (one channel shown)( h l h ) "Y" Adaptor (Not supplied) TAD Reference Onee Figure 10. Connecting a TAD Reference One loudspeaker in a vertical bi-amplified system. 14 TAD Reference One Owner’s Manual Horizontal Bi-Amping With this configuration, you may use different stereo amplifiers for the low- and high-frequency sections of the loudspeaker (e.g., tube amplifiers for high frequency and solid state for low frequency). Each channel of one amplifier drives the low-frequency section of each loudspeaker and each channel of the other amplifier drives the high-frequency section, as shown in Figure 11. This method requires that both amplifiers have the same gain; otherwise an imbalance will be heard between the low- and high-frequency reproduction from the loudspeaker. If in doubt, please consult your TAD dealer. HF LF SPEAKERS OUTPUT INPUT SPEAKERS OUTPUT INPUT OUTPUTUTOUTPUT Terminal PanelT Amplifier(rear) p( ) (Use for high frequencies) Amplifier(rear) p( ) (Use for low frequencies) Pre-Amplifier (rear) (one channel shown)( h l h ) (one channel shown)(one channel sho n) (one channel shown)(one channel sho n) TAD Reference Onee "Y" Adaptor (Not supplied) Figure 11. Connecting a TAD Reference One loudspeaker in a horizontal bi-amplified system. TAD Reference One Owner’s Manual 15 OPTIMIZING THE SYSTEM Improving Bass Performance Select a music track with well-recorded bass, such as acoustic string bass. Listen for all the bass notes having roughly equal level. If any notes jump out at you more strongly than others, try moving the TAD Reference One loudspeakers until you get the most even progression of the notes. Typically, moving them towards the walls will increase low bass output, but can result in more unevenness higher up the musical scale. Moving them closer to the side walls will not produce the same effect as moving closer to the back wall, so try experimenting moving both ways for the most pleasing sound. Also listen to drum sounds. The kick drum should sound tight and fast, without low-frequency boom. Changes in loudspeaker position of as little as a few inches can have a large effect upon bass performance, so take time and try many positions. A useful tip to speed up the process is to have a partner move around the room while talking. Listen to where the voice sounds most natural, without added chestiness, and position the loudspeaker in that location. Improving Imaging Now select music with a strong center image. Listen for that image to be exactly centered between the loudspeakers, and to be well-focused. If the image is unclear and spreads wide, the side walls are probably creating strong reflections. Try moving the loudspeakers closer together to reduce this effect. If this brings them too close, try instead toeing in the loudspeakers so that the axis crosses in front of the listening position. Because of the superior off-axis 16 TAD Reference One Owner’s Manual performance of the CST driver, the strength of the side-wall reflections will be reduced, and at the same time, the image will be stabilized and focused. Now listen to music with well-recorded acoustics. Check that the image is wide and deep. Limited depth suggests that the speakers are placed too close to the front wall. Try moving them forward. Final Optimization You may find that as you move the loudspeakers to optimize one aspect of performance another worsens; for example, trading improved image accuracy for poorer bass response. If this occurs, try moving your listening position. Bass response is governed strongly by both loudspeaker and listening positions, whereas imaging is mostly determined by the loudspeaker position. Therefore, you may find that if optimizing for imaging compromises bass, then changing the listening position will bring back bass performance. The room characteristics will also have a profound influence upon the sound. Live rooms, with few soft furnishings and hard floors, will impart an artificial sense of spaciousness to the sound but reduce the intimacy and accuracy. Overly dead rooms, with lots of furnishing, carpets, and drapes will produce a very dry, lifeless sound and require lots more power to drive the loudspeakers to adequate sound levels. The optimum is somewhere in-between. Avoid hard, unbroken, parallel walls, especially side walls, as these impart strong flutter-type echoes and will have a bad influence on t...


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