Bosch Power Tools 1821 Grinder User Manual
Contents
1. Loudspeaker Side View Mounting Bracket Mounting Hole 9 95 8 241mm 143mm 223mm C As 64 i 2 a ip DA a D A j 171mm 67mm 143mm 146mm 361 lt f jo jo 10 6 1042 9 268mm 267mm 251mm o 7374 L 27 E AE La 7 an 197mm 73mm 170mm 181mm 381 i 127s 1238 113 74 315mm 315mm 298mm So TESA 9 6 i L 34 4 i 8 6 8v2 r 243mm 83mm 218mm 216mm Examine the contents of the package and verify that it contains the following Quantity Description Quantity Description 2 Designer Series Speakers Hardware package contents 2 Mounting Bracket 12 8 32 x 2 screw 2 Barrier Cloth 2 Cable clamp 3 6 2 Painting Mask 2 Metal Grille If the hardware package is missing any items or is not found 1 Template additional packages are available from Boston Acoustics 1 Owner s Manual Installation Instructions 1 Hardware Package Placement Since the speaker installation is permanent and the furniture placement may not be the user should first determine the best long term location one that will accommodate future relocation of the furniture in the room while still allowing for an unobstructed sound path from the speakers to the listening2. Peabody MA 01960 1996 Boston Acoustics Inc 508 538 5000 42 353 4
3. area Within reason wherever the speakers look right is where they ll sound right For best results place the speakers 6 10 feet 1 8 3 3m apart so they form a triangle with the main listening area Try to keep the speakers at least 12 18 inches 30 45cm from the nearest reflective surface side walls or ceiling When used near a color television the speakers should be mounted a minimum of 6 inches 150mm from the TV to avoid interference with the picture As a final check on the suitability of the mounting location it s a good idea to temporarily place a pair of small box speakers if available at the mounting locations chosen for the system This will give the listener an approximate idea of what the speakers will sound like in that location Listen for pleasing stereo image realistic stage height or balanced surround field coverage if using the speakers as rear channel surrounds Note if any objects in the room impede the sound path from the speakers to the listening area Outdoor Use The Designer Series is moisture and temperature resistant and may be used outdoors or in a marine setting Placement under the eaves of a roof or in the cockpit of a boat reduces exposure to constant direct sunlight precipitation and salt spray thereby maximizing the speaker s life 12 18 inches 30 45cm lt gt Painting the Speakers If you intend to paint the speakers it s best to do so befo
4. speaker grille is removable The speakers are constructed of rugged materials suitable for use in a variety of environments indoors or out Offering complete placement flexibility all exposed components are moisture rust and temperature resistant for worry free installation in the bath kitchen or on the patio Their smooth detailed sound comes from two highly refined driver elements a powerful long excursion copolymer bass unit and our 1 inch 25mm Kortec soft dome tweeter The silk like fabric dome delivers a remarkably accurate response for outstanding clarity and articulation The tweeter and bass unit are mounted close together in a point source configuration for excellent imaging and extremely broad uniform dispersion This is important because wide dispersion gives you the flexibility to install the speakers where they look the best high on the walls for example yet still project a smooth natural sound throughout the listening area In combination these advanced engineering technologies and Boston s state of the art manufac turing facilities give the Designer Series a level of performance unmatched by other in wall speakers Installation Instructions NOTE This manual assumes the installer possesses skill in the proper use of hand and power tools a knowledge of local building and fire codes and a familiarity with the environment behind the wall or ceiling in which the speakers will be installed
5. 351 361 381 Designer Series In wall Speaker Systems ostonAcoustics co Specifications 351 361 381 Frequency Response 3dB 65 20 000Hz 57 20 000Hz 48 20 000Hz Recommended Amplifier Power 10 100 watts 10 125 watts 10 150 watts Nominal Impedance 8 ohms 8 ohms 8 ohms Sensitivity 1 watt 2 83v at 1m 90dB 89dB 890B Tweeter Kortec 1 25mm Kortec 1 25mm Kortec 1 25mm soft dome soft dome soft dome Bass Unit 5 135mm copolymer 612 165mm copolymer 8 200mm DCD copolymer Crossover Frequency 3500Hz 3400Hz 3200Hz External Dimensions HxW 9 x6 241 x 171mm 10 x734 268 x 197mm 12 x 9 6 315 x 243mm Mounting Hole Cutout HxW 8 x5 223 x 146mm 9 x7 251 x 181mm 11 x 8 298 x 216mm Mounting Depth from surface 2 67mm 272 73mm 34 83mm Introduction The Designer Series in wall speakers are designed to be as accurate clean and musical as our free standing speakers The unobtrusive flush mount design makes them ideal for installation in walls or ceilings of rooms where space or decor make conventional speakers undesirable or inappropri ate They can also be used for front and or rear channels in a home theater system The front surface has a matte white finish The speaker can be installed as is or can be painted to match the room environment by using the supplied painting mask The epoxy painted galvanized steel
6. cket assembly for instal lation as shown For new construction an optional bracket Model 35UB for the 351 Model 36CB for the 361 Model 38B for the 381 is available from your Boston Acoustics dealer 5 Route the speaker wire through the cable clamp and connect the wire to the speaker WARNING To prevent electrical shock hazard always switch off the amplifier or receiver when making connections to the speaker IMPORTANT Typically one side of the wire is smooth Connect this side to the black speaker terminal The other side has a rib or stripe Connect this to the red speaker terminal Connect wire at the amplifier in the same way Failure to do so will result in degraded sound 6 Install soeaker according to diagram below IMPORTANT Do not overtighten screws Doing so will break the frame and or make it impossible to insert the grille Install barrier cloth for ceiling installations Listening Levels and Power Handling The power recommendation for the speakers assumes that you will operate the amplifier in a way that will not produce distortion Even our rugged speakers can be damaged by an amplifier if it is producing distortion If you hear a harsh gritty noise turn down the volume Prolonged or repeated operation of your speaker with a distorted signal from the amplifier can cause damage that is not covered by the warranty Limited Warranty F
7. or one year from the date of purchase Boston Acoustics will repair for the original owner any defect in materials or workmanship that occurs in normal use without charge for parts and labor Your responsibilities are to use the system according to the instructions supplied to provide safe and secure transportation to an authorized Boston Acoustics service representative and to present proof of purchase in the form of your sales slip when requesting service Excluded from this warranty is damage that results from abuse misuse accidents shipping or repairs or modifications by anyone other than an authorized Boston Acoustics service representative This warranty is void if the serial number has been removed or defaced This warranty gives you specific legal rights and you may also have other rights which vary from state to state If Service Seems Necessary First contact the retailer from whom you purchased the speakers If that is not possible write to Boston Acoustics Inc 300 Jubilee Drive Peabody MA 01960 We will promptly advise you of what action to take If it is necessary to return your speaker to the factory please ship it prepaid After it has been repaired we will return it freight prepaid in the U S and Canada Boston Kortec is a trademark and Boston and Boston Acoustics i are registered trademarks of Boston Acoustics Inc BostonAcoustics com 300 Jubilee Drive Specifications subject to change without notice
8. re installation 1 Remove the speaker grille Carefully pry at each corner with an awl or small screwdriver 2 Use the form fitting painting mask provided to paint the housing Cover the slots with masking tape 3 After painting remove the mask by carefully inserting a screwdriver into the slots Do not puncture the drivers behind the mask with the screwdriver 4 When painting the grilles be certain that the paint does not fill the perforated holes in the metal If using spray paint use two thin coats If using house paint or other canned paint thin the paint to avoid filling the holes Be sure to use appropriate exterior paint for outdoor applications Use masking tape to cover slots Bosto D Preparing for Installation Map out the wiring paths from the speakers to the amplifier We recommend 18 gauge wire for runs up to 25 feet and 16 gauge or thicker for longer runs Be sure the speaker wire does not rest or rub against any sharp or pointed objects The speakers should be mounted on a flat surface to form a good seal between the speaker flange and the mounting surface Each speaker is 8 ohms nominal When connecting more than two speakers per amplifier channel you should use series parallel wiring or line transformers In all ca
9. ses make certain that the total impedance does not fall below the amplifier s minimum rating If you are not sure contact your Boston Acoustics dealer Use the cable clamp supplied to secure the speaker wire to the housing Affix the clamp to one of the screws used to hold the printed circuit board to the housing You Will Need 1 A utility knife electric jigsaw or other means of cutting a hole in the mounting surface 2 Phillips and flat blade screwdrivers 3 A wire cutter or stripper for preparing the speaker wires 4 An awl or small screwdriver to remove the speaker grille With the hardware supplied the speaker can be installed in existing walls and ceilings from 9 5mm to 1 2 38mm thick For thinner walls you will need to use spacers not provided for the mounting bracket In walls greater than 1 2 38mm thick you will need longer screws Installation 1 Make a cutout using the supplied template BostonAcoustics A BostonAcoustics A BostonAcoustics 83 4 HOLE CUTTING TEMPLATE HOLE CUTTING TEMPLATE 223mm 97h oe cee 251mm 11 298mm q gt Pa gt 5 Y 146mm 7 4 181mm 8 216mm 2 Run wire from the amplifier to the cutout Allow an extra foot of wire at the cutout Strip 2 12mm off wire and tightly twist the wire strands 3 Remove speaker grille Carefully pry each corner with an awl or small screwdriver 4 Prepare the speaker bra
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