User manual TANNOY PRECISION PASSIVE

[. . . ] For continuous exposure we recommend the occasional use of a sound level meter capable of integrating the sound level over a period of exposure according to noise control standards. This should be used just to check that noise levels are always within safety limits. 3. 0: INSTALLING & POSITIONING 3. 1 5. 1 Surround Monitoring 3. 2 Bass Ports 3. 3 Equalisation 4. 0: PRECISION 6 AND 8 DIMENSIONS 5. 0: PERFORMANCE DATA 6. 0: TECHNICAL SPECIFICATIONS 7. 0: SERVICING 7. 1 7. 2 7. 3 7. 4 Cabinet finish Driver removal Crossover List of spare parts 2. 3: CONNECTING YOUR SPEAKER The types of cable used to connect the speakers to the power amplifier will marginally affect the sound. The cross-sectional area of the cable should be large enough so as not to affect the damping factor, generally a cable with a cross-sectional area of 2. 5 mm2, or greater is recommended. The lower the resistance of the cable between the amplifier and the speakers, the better the damping factor acting on the speaker. [. . . ] Ensure that the console position does not obscure the direct sound radiation from the loudspeakers when sitting down. The engineer and producer should have a clear, uninterrupted view of the monitor loudspeakers. 3. 1: 5. 1 SURROUND MONITORING 2. 0: THE BASICS The Precision 6 and 8, are designed and made by Tannoy, a company with unrivalled experience in studio monitoring. They have an extremely detailed, dynamic sound with a wide, flat frequency response ­ essential requirements for monitoring with reliable accuracy. The Dual ConcentricTM drivers contain both low frequency and high frequency drive unit components aligned along the same axis and positioned to generate an acoustic point source. A titanium dome SuperTweeterTM extends the amplitude response of the acoustic radiation above 20kHz, beyond the limit of human hearing to above 50kHz. Extending the amplitude response in this way corrects the phase response of the system within the audible band below 20kHz. The Dual ConcentricTM components and the SuperTweeterTM are seamlessly matched by a precision low-loss crossover network. The drive units are mounted on a massive 40mm thick baffle, curved to minimise diffraction and creating the loudspeakers distinctive styling. All drive unit magnets are fully shielded to allow the system to be used close to video monitors. In order to ensure a uniform acoustical environment, the room should be symmetrical about the centre loudspeaker axis; room treatments should be applied symmetrically throughout the room. Mixed "Live end/Dead end" environments should be avoided. If the lateral speakers are positioned close to walls then the constitution of the wall surfaces should be identical. When using either Precision 6 or 8 as the main effects speaker for the front soundstage, placement is a critical factor for good performance. In all cases the centre channel speaker should be placed as close to the viewing screen as possible. The viewing position when seated determines the ideal mounting height, but in all cases this should be as close as possible to ear height, if this is not possible the monitor should be tilted towards ear height in the mix position. The centre speaker should be positioned along the centre axis of the picture and the left/right monitors just outside the picture, ideally the three front effects speakers would be placed with the front baffles in line with the screen surface. If an acoustically transparent screen is used, the left/right monitors should be placed just inside the edges of the picture. The surround speakers should be positioned at the same distance to the mix position as the main front speakers. As the subwoofer/LFE channel only produces low frequencies it is difficult to localise its position by ear. As a result it could effectively be situated anywhere in the room, though optimum performance will be gained by placing the subwoofer in the same plane as the main front speakers. The LFE channel is set at a level 10dB higher than the other channels when mixing therefore it is important to apply the same in any playback situation. 2 3 3. 2: BASS PORTS The Precision monitors' bass ports are located on the back panel. You should keep the back panels at least 150mm (6") away from the nearest wall surface to avoid an overblown bass sound. [. . . ] Applicable Standards: 7. 2: DRIVER REMOVAL Lay the cabinet on its back. Remove the ten hexagonal screws and set aside. Ease the driver from the front of the cabinet taking care not to mark the front surface. Remove the driver, note the polarity of the internal connections and disconnect the internal wiring. [. . . ]