User manual QSC AUDIO AD-S28TW

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Manual abstract: user guide QSC AUDIO AD-S28TW

Detailed instructions for use are in the User's Guide.

[. . . ] QSC Audio Products 3 Year Limited Warranty QSC Audio Products, LLC ("QSC") guarantees its products to be free from defective material and/or workmanship for a period of three (3) years from the date of sale and will replace defective parts and repair malfunctioning products under this warranty when the defect occurs under normal installation and use - provided the unit is returned to our factory or one of our authorized service stations via prepaid transportation with a copy of proof of purchase (i. e. , sales receipt). This warranty provides that the examination of the returned product must indicate, in our judgement, a manufacturing defect. This warranty does not extend to any product which has been subjected to misuse, neglect, accident, improper installation , or where the date code has been removed or defaced. This limited warranty is freely transferable during the term of the warranty period. [. . . ] The yoke is designed to allow attachment to the mounting surface with mounting points ranging from 5. 5 in (140 mm) to 6. 5 in (165 mm) apart. 1 - Remove the screws from the selected attachment points using a #2 phillips-head screw driver or electric driver. Remove only the two screws that will be used for the attachment of the yoke. If a screw hole is left open, it will create an airleak which will cause noise and compromise the performance of the cabinet. 2 - Remove the adhesive backing from the rubber pad and attach the pad to the cabinet by pressing the adhesive coated side against the cabinet. The adhesive will hold the pad in place as you mount the enclosure to the yoke. 3 - Align the yoke with the attachment points on the subwoofer and place the attachment hardware according to the illustration. Hex-head / phillips-head m6 Bolt Lock washer Flat washer Adhesive rubber pad (affixed to enclosure) 4 - Tighten the hex-head/phillips-head bolts enough to hold the subwoofer in place but loose enough to rotate with minimum force. As long as the port is not blocked, the alignment of the subwoofer will not affect performance. Once positioned, tighten the bolts so that the subwoofer will not rotate with force. the yoke must be secured to structure that is capable of supporting the weight of the subwoofer and must be connected using load rated hardware. Consult a licensed, professional engineer when any doubt or questions arise regarding a physical equipment installation. Once the subwoofer is secured in position, the QSC logo can be rotated if desired. If the logo is difficult to rotate the first time, a tool may be required. Gently work the tool between the logo badge and the grille to allow rotation. Exercise care to avoid scratching the grille surface. 5 Any unused attachment point can be used as a safety/seismic secondary attachment. Attach an eyebolt to an available attachment point according to the section of the manual titled: Suspending the Subwoofer Using Eyebolts and Shear Plates. Be sure to leave less than 12 in (300 mm) of slack in the secondary attachment cable. the safety/seismic secondary attachment must be secured to structure that is capable of supporting the weight of the subwoofer and must be connected using load rated hardware. Suspending the Subwoofer Using Eyebolts and Shear Plates EN The subwoofer can be suspended using the included eyebolts. There are three possible orientations for installing the subwoofer this way. Port facing down For each of these orientations, the points for eyebolt and shear plate attachment are very specific. Please consult the following illustrations to understand each orientation and pay careful attention to which attachment points are correct. 6 The locations of the eyebolts were designed to suspend the subwoofer using the fewest number of attachment points. [. . . ] A good "rule of thumb" is that the rated power of the amplifier per channel should be the minimum of all of the connected taps added together with an additional 20% for headroom. An example: 8 Loudspeakers each tapped at 50W 50 + 50 + 50 +50 + 50 + 50 + 50 + 50 = 400 400 + 20% = 480 or 8 x 50 = 400 Use an amplifier with a minimum channel power rating of 480W Multitap 70V / 100V transformers can saturate with low frequency energy. The transformer use in the AD-S28Tw is custom designed to saturate at frequencies below the functional low frequency range of the AD-S28Tw. It is recommended that a -6 dB, 30 Hz high pass filter be engaged to prevent saturation of the transformer. 8 Specifications AD-S28tw Frequency Response1: maximum Output2: (Calculated) transducers: Impedance (ohm): Power Handling3: RMS (IEC 2hrs): Recommended amp rating: Sensitivity: Internal Filter: Optional Processing: transformer: Type: Taps: Connectors: Controls: Enclosure Configuration: Enclosure Construction: Environmental: Finish: Grille: mounting Hardware: 42 - 165 Hz (-3 dB), 36 - 205 Hz (-10 dB) 118 dB SPL continuous rms output 124 dB SPL peak output Dual 8 inch (200 mm) weather resistant, polypropylene cone woofer, rubber surround 8. 0 nom. [. . . ]

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