Buick Buick Century Automobile User Manual
Contents
1. iIC1 iC2 iC3 and iC4 In Ceiling Loudspeakers OWNER S MANUAL Now Hear This 527 Stone Road Benicia CA 94510 800 NHT 9993 Thank you for your purchase of the NHT in ceiling loudspeaker Please take a few minutes to read through this owner s manual prior to installing your new speakers The information provided will help you to obtain maximum performance from your audio system If you have questions or need assistance at any time during the installation or operation of your new speakers please call your NHT Dealer or our Toll Free Customer Hotline at Specifications E Design System Type Driver Complement Crossover Response Sensitivity Impedance Recommended Power Inputs Weight Cutout Diameter Bezel Diameter Depth behind ceiling Finish System Type Driver Complement Crossover Response Sensitivity Impedance Recommended Power Inputs Weight Cutout Diameter Bezel Diameter Depth behind ceiling Finish 1 800 NHT 9993 iC1 2 way in ceiling design 6 5 long throw polypropylene cone woofer and 1 fluid cooled soft dome tweeter coaxially mounted 2 2KHz 18dB octave high pass and 12dB octave low pass 60Hz 20KHz 3dB 86dB 2 83V at 1M 8 ohms nominal 10W ch minimum 100W ch maximum Spring clips 4 6 Ibs each 8 13 16 Dia without iCB6 8 1 2 9 11 16 Dia 4 13 16 Matte white paintable iC3 2 way in ceiling design 6 5 long thro2. be easier E Parts List each speaker Speaker pack includes 1 Speaker assembly 1 Metal grille iCB6 iCB8 2 Absorptive foam pad except iC 1 1 1 optional Use iCB6 for models iC1 iC2 iC3 1 Paint shield cutout template Butyl Use iCB8 for model iC4 1 Roll of butyl rubber iCB6 and iCB8 Mounting Bracket pack includes 1 Mounting bracket 2 Metal mounting wings 4 5 x 50mm flathead screws Metal grille Absorptive Foam Pad E Tools Needed 2 Philips screwdriver Pencil Tape measure Utility knife or keyhole saw Level Speaker Assembly JBW Mounting Aluminum bracket Mounting wing Paint shield cutout template Wire strippers Safety goggles Protective gloves E Installation New Construction unfinished ceilings 1 Once you ve selected the desired location for the speaker begin by installing the iCB6 or iCB8 mounting bracket between adjacent ceiling joists First attach the mounting wings to the bracket by inserting them into the locking plastic tabs in the side of the bracket fig 1 2 The wings feature progressively elongated sections 1 1 2 2 2 3 3 with screw holes spaced in one inch increments The iCB6 and iCB8 have NHT logos on one side this side should be oriented away from the drywall Attach the wings to the joists with the 5 x 50mm flathead screws or s
3. by stripping 1 4 to 3 8 of insulation from the ends and twisting the exposed wire strands tightly The spring loaded binding posts on the back of the speakers will only accept raw wire All speaker wire have some sort of marking along one or both conductors to help you make the correct connections Incorrect speaker phase is indicated by weak bass and the lack of a well defined stereo image E Operation The NHT in ceiling speakers are designed to handle a wide range of listening levels but every speaker has limits It is important to use common sense and listen for signs of possible distress from the speakers Underpowered amplifiers are most often the cause of speak er damage For example a 60 watt amplifier runs out of power when called upon to produce more than 60 watts and the resulting dis tortion can damage the speaker If you tend to listen at high volume levels more powerful amplifiers are preferable because they are less likely to run out of power Noticeable distortion or harsh breakup is an indication that either your amplifier or your speakers are running beyond their capacity and the volume should be decreased Speaker damage most often occurs from sustained high volume levels not from transient sounds or brief musical peaks Excessive boosting of bass treble or equalizer controls can worsen the problem and is not recommended E Maintenance The NHT in ceiling speakers require minimal maintenance under normal use The gri
4. grille at the same time using the same paint Use the supplied paint shield to protect the driver and inside of the speaker assembly from Fold down overspray Fold the edge of the shield down and insert it into the groove in the speaker assembly outer ring where the grille attaches fig 8 Be careful not to punch through the round hole in the middle 2 When using spray paint apply two thin coats make sure to let the first coat dry completely before applying the second This will avoid runs When using a compressor and spray gun apply the paint using its finest setting Painting with a brush is not recommended but when necessary Place Inside be sure to thin the paint so as not to cover the holes in the grille If the paint does cover any of Bezel the grille holes poke them out with a paper clip 3 Once painting is complete remove the paint shield from the speaker assembly by carefully punching out the round hole in the middle and using this hole to pull the shield free Keep the paint shield and the round cutout as they will serve as templates for attaching the absorptive foam pad s to the inside of the grille E Connections The NHT in ceiling speakers are compatible with virtually all quality amplifiers Proper wiring of the speakers is essential to good sound Ata minimum 16AWG 2 conductor speaker wire is recommended for runs of 10 feet or less with heavier special purpose speaker wire used for longer runs Prepare the wire
5. maintenance Altered defaced or removed serial numbers void this warranty Your Rights The liability of NHT will be limited to the purchase price of the product and NHT will not be liable for incidental or consequential damages NHT limits its obligations under any implied warranties under state laws to a period not exceeding the warranty period Some states do not allow limitations on how long an implied warranty lasts and some states do not allow the exclu sion or limitation of incidental or consequential damages The above limitations or exclusions may not apply to you This war ranty gives you specific legal rights and you may have other rights which vary from state to state To Obtain Service NHT has appointed a number of authorized service companies throughout the USA should your product ever require service To receive warranty service you will need to present your sales receipt showing place and date of original owner s transac tion To find the name and address of the nearest authorized NHT service location call or write Customer Service Department NHT 527 Stone Rd Benicia CA 94510 1 800 NHT 9993 648 9993 www nhthifi com Keep this warranty with your sales receipt Record date and place of purchase for future reference
6. snugly making sure to not over tighten as this may compromise the fit of the speaker assembly The use of power screwdrivers is notrecommended The gasket on the drywall side of the speaker assembly lip reduces unwanted vibrations against the drywall and will compress slightly to allow the speaker assembly lip to rest flush against the ceiling The spring loaded mounting clamps provide tension once installed 8 If the exposed area of the speaker assembly and grille are to be painted after it s mounted to the ceiling install the paint shield to protect the driver from overspray see Painting Once painting is complete remove the paint shield and set it aside for use in Step 9 9 The NHT in ceiling speakers use an absorptive foam pad except the iC1 on the inside of the grille to shape the sound radiation fig 5 There is a circular section in the center of the paint shield that serves as a template for attaching it Punch out the perforated circle Place the paint shield minus the cir cular section on the inside of the metal grille remove the backer from the adhesive dot and attach the absorptive pad onto the inside of the grille through the circular cutout 10 A strip of butyl rubber is provided with this product Application of butyl rubber is not required but can be used to provide additional security when mounting the grill in place Cuta 1 4 long piece of butyl rubber from the end of the roll pro vided Peel off the p
7. speaker assembly Tech Tips Optimizing Sonic Performance Bass response is smoothest when the speaker is mounted into a rigid ceiling that flexes very little For improved performance add cross braces horizontally roughly one and a half feet to either side of the speaker location Use wood glue and extra screws when attaching the drywall to the joists around the speaker Additionally once the speaker cutout has been made in the drywall add a strip of wood glue where the drywall meets the joists and cross braces For more controlled bass response add insulation to the ceiling cavity around and behind the speaker to provide acoustic damping Be sure to add the same amount of insulation to speakers in the same room to ensure consistent sound Use R 12 or R 19 fiberglass insulation and be sure to wear protective gloves to avoid contact with the fibers If the insulation is paper or foil faced position the paper or foil side away from the speaker If the new or existing insulation is the loose type place a thin sheet of fiberglass over the top of the speaker to keep out small debris E Painting The bezel frame and grille of the NHT in ceiling speakers are finished in a matte white finish that may be painted to match the ceiling Keep in mind that the grille contains hundreds of tiny holes that are essential to the sound of the speaker Take care not to cover these holes with paint 1 Paint the outer ring of the speaker assembly and the
8. aper covering and roll the rubber between your fingers until it makes a small cylinder Make three of these cylinders and place them in the groove before installing the grill fig 6 11 Attach the metal grille by inserting it into the grooves in the speaker assembly HUA SOT a Cut around D a gt perforations fig 5 Remove template E Installation Existing Construction retrofitting finished ceilings 1 Using a studfinder or the knocking method locate the joists in the ceiling area where you wish to mount the speaker The speaker will be mounted between adjacent joists no closer than two inches from either joist 2 Determine that there are no obstructions above the desired cutout area This may be accomplished by drilling a hole in the center of the cutout area and using an L shaped piece of metal like a coat hanger to feel around above the ceiling If you dis cover an obstruction fill the hole with patching compound and try another location 3 If there are no obstructions found above the ceiling use the supplied cutout template and a pencil to draw a 10 diameter outline of the area to be cut out Begin by drilling a hole on the inside of the circle with a 1 4 bit Then cut out the ceiling section with a util ity knife or keyhole saw following the line traced around the cu
9. he room the oppo site side from where the television will likely be For best results position the NHT in ceiling speakers 40 to 60 degrees off axis from the listening position The polar plots located on the NHT website indicate smoother frequency response at these angles If you wish to get an idea how they will look try taping the supplied cutout templates to the ceiling Tech Tips Pre Wiring for New Construction 1 For best results avoid running speaker wire near AC wire as it may induce a 60Hz hum in the audio signal It s a good idea to run the speaker wire after the AC wiring has already been completed so that you can route the speaker wire at least three feet away from the AC wiring If speaker wire and AC wiring must run parallel install the speaker wire within a steel conduit Note that low voltage wiring doorbell intercom telephone security etc is unlikely to induce hum and can typically be run parallel to speaker wire with no detrimental effects 2 When drilling holes through wall studs or ceiling joists use a drill bit that is at least as wide as the speaker cable that will be routed through them Always drill through the center of the stud or joist If the hole must be drilled within one inch of the edge of a wall stud add a nail plate to the drywall side to protect the wire from possible nails and screws putin the wall later Line up the holes in the studs or joists as you go so that pulling the wire through them will
10. leasure NHT in ceiling loudspeakers are designed to deliver the sonics and value of NHT s acclaimed freestanding speakers while offering the invisibility of in ceiling installation The drive units are custom designed to achieve a level of performance not normally associated with in ceiling speakers while the intuitive mounting system makes them ideal for new or existing construction The iC2 iC3 and iC4 employ NHT s innovative three tweeter array for more even sound dispersion to a wider range of listening areas E Placement NHT in ceiling speakers are designed for installation between standard wood joists Their moisture resistant drive units allow them to be installed in moisture prone interior environments such as bathrooms indoor swimming pool and sauna rooms Outdoor use is not recommended Spend some time considering placement prior to installing the speakers Once they are installed they are permanent so their location should be selected carefully When possible locate the speakers at least 3 feet from adjacent side walls and at least 2 feet from front or rear walls The speakers should be mounted on a flat surface to ensure a good seal between the baffle and the mounting surface When possible position the speakers so that they are equidistant from the most likely listening area If the NHT in ceiling speakers are going to serve as rear Surround channels in a home theater system make sure to install them toward the rear of t
11. lle and speaker assembly may be cleaned using Limited Warranty Valid Only in the U S A Warranty Period For the period of 5 years for parts and 5 years for labor from date of original purchase the warranty period from an autho rized NHT dealer Now Hear This NHT warrants that if our product fails to function properly under normal use due to a man ufacturing defect when installed and operated according to the owner s manual instructions enclosed with the unit it will be repaired or replaced with a unit of comparable value at the option of NHT without charge to you for parts or actual repair work Parts supplied under this warranty may be new or rebuilt at the option of NHT What s Not Covered This warranty does not cover any product which is used in any trade or business or in an industrial or commercial applica tion This warranty does not cover the cabinet or any appearance item or any damage caused to the product resulting from alter ations modifications not authorized in writing by NHT accident misuse or abuse damage due to lightning or power surges or being subjected to power in excess of the speaker s published power rating This warranty does not cover the cost of parts which would otherwise be provided without charge under this warranty obtained from any source other than an authorized NHT service location This warranty does not cover defects or damage caused by the use of unauthorized parts or labor or from improper
12. taples For maximum stability use two screws for each wing Bend back the extra portion of the wing at one of the pre stamped break lines fig 2 3 Complete the pre wiring before the drywall goes up see Tech Tips Pre Wiring for New Construction Leave an extra few feet of speaker wire and tie it to the the mounting bracket Jf Bend Ameamq Owes f a Los Joisis 1 4 During the drywall phase cut a hole around the bracket so that the drywall surrounds the protruding lip of the mounting bracket iCB6 8 13 16 Dia iCB8 10 1 4 Dia Once installed the lip of the speaker assembly will extend about 1 2 inch beyond the perimeter of the cutout to hide minor imper fections in the cutout fig 3 5 After the drywall is complete connect the speaker wire to the spring posts on the back of the speaker assembly making sure to observe correct polarity see Connections 6 The speaker assembly attaches to the bracket via four plas tic mounting clamps on the back of the speaker assembly that swivel to sandwich the drywall between the speaker assem bly and the clamps fig 4 First rotate the mounting clamps inward so that the body of the speaker assembly can slide through the mounting bracket Exercise caution not to damage the drivers 7 Tighten the screws
13. tout template fig 7 If the ceiling is painted use the keyhole saw Once installed the speaker assembly outer frame will extend about 1 2 inch beyond the perimeter of the cutout to hide minor imper fections in the cutout 4 Ifthe ceiling is constructed of lath and plaster outline the penciled circle with mask ing tape drill a 1 4 hole and use a utility knife to cut through the plaster down to the lath Use a saber saw with a metal cutting blade or a pair of tin snips to gently cut through the lath being careful not to vibrate plaster off the ceiling 5 To mount the NHT in ceiling speaker into an existing ceiling the use of a mounting bracket is optional 6 Connect the speaker wire to the spring posts on the back of the bezel making sure to observe correct polarity see Connections 7 The speaker assembly mounts to the existing ceiling via four plastic mounting clamps on the back of the speaker assembly that swivel to sandwich the speaker assembly in place between its protruding outer frame and the rear surface of the drywall First rotate the mounting clamps inward so that the body of the speaker assembly can slide through the cutout in the ceiling Exercise caution not to damage the driver fig 4 8 Tighten the screws snugly making sure not to over tighten as this may compromise the fit of the speaker assembly The use of power screwdrivers is not recommended The gasket on the back the speaker assembly lip reduces
14. unwanted vibrations against the drywall and will compress slightly to allow the speaker assembly lip to rest flush against the ceiling 9 If the bezel frame and grille are to be painted in the ceiling install the paint shield to protect the driver from overspray see Painting Once painting is complete remove the paint shield and set it aside for use in Step 10 10 The NHT in ceiling speakers use an absorptive foam pad except the iC1 on the inside of the grille to shape the sound radiation fig 5 There is a circular section in the center of the paint shield that serves as a template for attaching it Punch out the per IN C Apply Here Cutout Diameter 1 4 Diameter ists eae forated circle Place the paint shield minus the circular section on the inside of the metal grille remove the backer from the adhesive dot and attach the larger absorptive pad onto the grille through the circular cutout 11 A strip of butyl rubber is provided with this product Application of butyl rubber is not required but can be used to provide addition al security when mounting the grill in place Cut a 1 4 long piece of butyl rubber from the end of the roll provided Peel off the paper covering and roll the rubber between your fingers until it makes a small cylinder Make three of these cylinders and place them in the groove before installing the grill fig 6 12 Attach the metal grille by inserting it into the grooves in the
15. w aluminum cone woofer and 1 fluid cooled aluminum dome three tweeter array 1 9KHz 18dB octave high pass and 12dB octave low pass 50Hz 20KHz 3dB 85dB 2 83V at 1M 8 ohms nominal 10W ch minimum 125W ch maximum Professional grade spring posts 5 Ibs each 8 13 16 Dia without iCB8 8 1 2 9 11 16 4 13 16 Dia Matte white paintable iC2 2 way in ceiling design 6 5 long throw polypropylene cone woofer and 1 soft dome three tweeter array 2 2KHz 18dB octave high pass and 6dB octave low pass 60Hz 20KHz 3dB 86dB 2 83V at 1M 8 ohms nominal 10W ch minimum 100W ch maximum Professional grade spring posts 5 Ibs each 8 13 16 Dia without iCB6 8 1 2 9 11 16 Dia 4 13 16 Matte white paintable iC4 2 way in ceiling design 8 long throw aluminum cone woofer and 1 fluid cooled aluminum dome three tweeter array 1 6kHz 18dB octave high pass and 12dB octave low pass 40Hz 20KHz 3dB 87dB 2 83V at 1M 8 ohms nominal 10W ch minimum 150W ch maximum Professional grade spring posts 7 Ibs each 10 1 4 Dia without iCB8 10 11 1 4 4 3 4 Dia Matte white paintable NHT loudspeakers are designed to deliver refined musical sound from attractive and affordable packages Our efforts are guided by the study of human hearing and are optimized for real world use Every NHT speaker undergoes rigorous testing and quality control at the factory to ensure you years of listening p
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