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Community Professional Loudspeakers 

333 East Fifth Street 

Chester, PA 19013-4511 USA 

TEL: 1-(610) 876-3400  FAX: 1-(610) 874-0190 

www.communitypro.com 

 

© 2007 All Rights Reserved 

C A L C U L AT I N G   A R R AY   C O V E R A G E   A N G L E S  

All iBOX Series loudspeakers are designed as trapezoidal-shaped enclosures with 15° side angles.  

When two iBOX loudspeakers are placed side-by-side in a tight-pack array, the 

included angle

 of the two 

loudspeakers is 30° (see left drawing of Figure 21).  If the loudspeakers are splayed outwards by 20°, the 
included angle is 50° (see right drawing of Figure 21).   

To calculate the total horizontal coverage of an array like this, add 1/2 of the horizontal coverage of each 

loudspeaker to the included angle.  Thus, for a pair of 60° loudspeakers in a tight-pack array (left drawing), the 
total horizontal coverage would be 30° plus 30° plus 30° or 90°.  If the loudspeakers are splayed outwards by 
20°, creating an included angle of 50°, the total horizontal coverage would be 30° plus 30° plus 50° or 110°.   

The area of overlap can be calculated by taking the combined rated coverage of the two loudspeakers 

and subtracting the total horizontal coverage of the array as calculated above.  As an example, for a pair of 60° 
loudspeakers, the combined rated coverage would be 120°.  For the tight-pack array, with a total horizontal 
coverage of 90°, the area of overlap is 120° minus 90° or 30°.  For the second array, with its 110° total horizontal 
coverage, the area of overlap is 120° minus 110° or 10°.  As a rule of thumb, a small area of overlap (10° to 15°) 
is beneficial for most arrays.  However, a larger area of overlap may create undesirable comb filtering or hot 
spots in the coverage. 

The method described above may be extended to an array of three or more loudspeakers by starting 

with two adjacent loudspeakers and ignoring the other loudspeakers in the array.  Calculate the coverage for this 
pair of loudspeakers as described above.  Then, treat the pair as a single loudspeaker and perform the 
calculations again for the next loudspeaker in the array.   

 

Figure 21:  Coverage Angles of an iBOX Array 

iBOX OM 111607 

Содержание iBOX i112S

Страница 1: ...iBOX SERIES INSTALLATION OPERATION MANUAL www communitypro com ...

Страница 2: ...referring to the electromagnetic compatibility of devices from 30 August 1995 The Community Professional Loudspeaker products bearing the CE label comply with the following harmonized or national standards DIN EN 55013 08 1991 DIN EN 55020 05 1995 DIN EN 55082 1 03 1993 The authorized declaration and compatibility certification resides with the manufacturer and can be viewed upon request The respo...

Страница 3: ...irst product series with all drivers Ferrofluid cooled First air cooled loudspeakers for touring systems AirForce First three way cinema loudspeaker systems Paramount Executive Studio Theatre Warner Bros screening theatre and dubbing rooms First electro acoustic system to equal the sound level of pneumatic warning sirens First to provide loudspeaker coverage over an entire country Denmark Emergenc...

Страница 4: ...ion Electrical Installation and Safety Pages 24 30 Mechanical Installation and Safety Pages 31 33 Painting iBOX Enclosures Page 34 System Design Guidelines Page 34 Field Service Page 35 Choosing Loudspeakers Page 35 Commissioning Page 35 Warranty and Service Pages 36 37 Specifications and Dimensions iHP1200 Pages 38 39 iHP1500 Pages 40 41 iHP3500 Pages 42 43 iLF218 Pages 44 45 i2W8 Pages 46 47 M12...

Страница 5: ...10 iHP1200 Specifications Page 38 Table 11 iHP1500 Specifications Page 40 Table 12 iHP3500 Specifications Page 42 Table 13 iLF218 Specifications Page 44 Table 14 i2W8 Specifications Page 46 Table 14 M12 Specifications Page 46 TABLES Table 1 iBOX Features Page 9 Table 2 iBOX Connections Page 10 Table 3 iHP3500 Basic Specifications Page 14 Table 4 iHP1500 Basic Specifications Page 15 Table 5 iHP1200...

Страница 6: ...s manual are designed and intended to be flown or suspended using a variety of rigging hardware means and methods Installation of loudspeakers should only be performed by trained and qualified personnel It is strongly recommended that a licensed and certified professional structural engineer approve the mounting design Severe injury and or loss of life may occur if these products are improperly in...

Страница 7: ...hipment as most freight companies have a short time limit within which they will investigate claims Make sure to save the carton and the packing material as most claims will be denied if these materials are not retained Your Community dealer and the factory will try to help in any way they can but it is the responsibility of the party receiving the shipment to file the damage claim It s always a g...

Страница 8: ...ies have the OmniMount bolt pattern on the rear item 5 above and in Table 1 The iHP3500 Series has an OmniMount bolt pattern on its bottom See the Installation section for connection and usage information on models i2W8 M12 and iLF218 Full Range Typical Subwoofer Typical IBOX FEATURES The diagrams on this page and the table on the following page identify basic iBOX features As noted in the table s...

Страница 9: ...L4 COMPATIBLE LOCKING CONNECTORS 4 pole NL4MP jacks wired in parallel Accepts NL4FC connectors Used for both PASSIVE and BI AMPLIFIED modes Use terminals 1 for PASSIVE mode or for BI AMPLIFIED LF input Use terminals 2 for BI AMPLIFIED HF input not used in PASSIVE mode PASSIVE BI AMP SWITCH Used to select loudspeaker s operating mode Down position is for PASSIVE mode single amplifier and up positio...

Страница 10: ...ge 30 Powering Each Woofer Separately MECHANICAL INSTALLATION AND SAFETY Rigging and Safety All iBOX models except the M12 are designed to be suspended flown using a variety of rigging hardware means and methods WARNING It is essential that all installation work involving the suspension of these loudspeaker products be performed by competent knowledgeable persons who understand safe rigging practi...

Страница 11: ...e may be safely flown or suspended overhead DANGER iBOX rigging fittings are rated at a Working Load Limit of 150 lbs 68 kg with a 15 1 safety margin No single rigging fitting should ever be subjected to a load that is greater than 150 lbs i2W8 rigging fittings are designed to suspend a single i2w8 only Failure to heed these limits could result in injury or death FOR MORE INFORMATION For more info...

Страница 12: ... lobing and consistent coverage through the crossover region Uniform Voicing Filters enhance sound quality and minimize sonic variations among the different models when used in passive mode Large format 1 4 inch throat high frequency compression drivers provide high power with lower distortion and smoother response than typical two inch throat drivers Mathematically correct large format hand laid ...

Страница 13: ...peakers are designed for top of the line installation work Their premium components are housed in rugged acoustically inert trapezoidal enclosures iBOX systems are characterized by high power and low distortion with exceptional musicality and speech intelligibility iBOX models come in three basic form factors or sizes Within each form factor there s one full range enclosure and two subwoofer model...

Страница 14: ... special ordered in horizontal versions with rectangular cabinets at no extra cost The i118S and i215LVS are high power subwoofers designed to complement the iHP3500 Series full range cabinets with matching exterior dimensions to allow combinations in arrays and clusters that are acoustically and aesthetically designed to work together A small footprint also makes these subwoofers an ideal choice ...

Страница 15: ...rformance when combined with other iBOX Mid Hi and subwoofer elements As with the 1200 Series two same dimension subwoofers are available to provide greater LF power and extension for larger systems The i115S single 15 inch Cool Coil LF Driver and i215S dual 15 inch Cool Coil LF Drivers subwoofers share the same cabinet profile and have been designed for integration with the iHP1500 Series full ra...

Страница 16: ...equiring greater LF extension Community provides the i112S single 12 inch Cool Coil LF Driver and i212S dual 12 inch Cool Coil LF Drivers subwoofers in the same size enclosures allowing aesthetically pleasing clusters with any cabinet combination Figure 5 iHP1200 Series Table 5 SMALL FORM FACTOR iHP1200 Series Model Type Angle of Coverage Transducers iHP1244 Two Way Full Range 40 x 40 LF 1 x 12 HF...

Страница 17: ...o compromise solution that exceeds the demands of high performance monitoring At a mere 10 inches high and 21 inches wide the M12 offers clean sightlines for audiences and cameras as well as superb performance for any entertainment venue Operable between 55 Hz and 18 kHz the two way ported system utilizes a 12 inch woofer and a two inch wideband compression driver coupled with a proprietary asymme...

Страница 18: ... i2W8T Its six sided low profile enclosure and ultra wide coverage pattern make the i2W8 ideal for use as a monitor stage lip or side fill as well For stage monitor use the i2W8 includes a kit of four feet that can be mounted in pre drilled holes on either of two panels Figure 8 i2W8 Front View left and X Ray Top View with Yoke right OPTIONAL MOUNTING HARDWARE iBOX loudspeakers are designed with c...

Страница 19: ... series of mounting holes allowing the installer to vary the distance from the enclosure to the mounting surface in order to suit the requirements of the installation Each model of yoke bracket is engineered to provide a high margin of safety when supporting the iBOX loudspeaker that it s designed for Yokes are manufactured of steel and covered with a durable powder coat finish They re available i...

Страница 20: ...stable Vertical Fly Kit is available that fits the iHP1200 iHP1500 and iHP3500 Series iBOX loudspeakers Designated the IB VFK it is intended for use only with identically dimensioned enclosures it does not permit mixing form factors The kit consists of two angle brackets and a flat steel plate slotted to align with the iBOX rigging fittings on the tops and bottoms of the enclosures It allows two i...

Страница 21: ...d the IB UPK the kit fits the iHP1200 iHP1500 and iHP3500 Series iBOX loudspeakers and permits the mixing of form factors it can support arrays made up of same size or different size iBOX enclosures One popular use of the Planar Kit is to support a subwoofer in the center position flanked by two full range enclosures This useful configuration permits fine tuning of the horizontal coverage angle wh...

Страница 22: ...rmining if all rigging components that are used to suspend the enclosures are adequately sized and rated and if the structure they are suspended from is capable of safely supporting the aggregate weight load Vari Angle Kit IB VAK A Vari Angle Kit is available that fits the iHP1200 iHP1500 and iHP3500 Series iBOX loudspeakers Designated the IB VAK the kit consists of a rigid support channel that at...

Страница 23: ...e suspended from is capable of safely supporting the aggregate weight load Seat Track Kit STKIT A Seat Track Kit is available that fits the iHP1200 iHP1500 and iHP3500 Series iBOX loudspeakers Designated the STKIT the kit provides a safe and convenient means of suspending a single enclosure By purchasing multiple kits one enclosure may be safely suspended over another WARNING Both M10 Metric and 3...

Страница 24: ...electrical safety procedures Connections With the exception of the ithe M12 Stage Monitor all iBOX Series loudspeakers including the iLF218 come with two methods of connecting the amplifier s to the loudspeaker One is a pair of industry standard NL 4 type locking connectors wired in parallel and the other is a barrier strip also wired in parallel with the NL 4 type connectors The barrier strip is ...

Страница 25: ...stallation Operation Manual Page 25 Figure 10 iBOX Subwoofer Input Panel Figure 11 NL4 Connection Detail in Passive and Bi Amp Modes Also see Page 30 Powering Each Woofer Separately INSTALLATION Passive Mode Bi amp Mode ...

Страница 26: ... produces positive acoustic pressure at the mouth of the loudspeaker Table 2 iBOX Connections except i2W8 and i2W8T Also See Page 30 Powering Each Woofer Separately Figure 12 i2W8 and i2W8T Connections Figure 13 M12 Connections INSTALLATION NL4 Connector Barrier Strip 1 1 2 2 1 left 2 3 4 right Passive Mode Looped thru to 2nd NL4 Bi Amp Mode LF LF HF HF LF LF HF HF Looped thru to 2nd NL4 ...

Страница 27: ...speaker against damage from over excursion and will reduce low frequency wind noise turntable rumble stage vibration and other noises that result in a poorly defined and muddy bass response Additionally a high pass filter will avoid using amplifier power that s wasted from attempting to reproduce frequencies below the loudspeaker s intended operating range Table 7 on Page 28 shows the recommended ...

Страница 28: ...the power amplifier at the input to the power amplifier Set the limiter s threshold high enough so that no limiting occurs until the signal is in danger of clipping Set the limiter s compression ratio to a high enough ratio to prevent clipping For professional audio equipment a typical threshold setting would be 10 dBu and a typical compression ratio setting would be 10 1 or higher Connecting Mult...

Страница 29: ...ths over 100 feet the wire gauges needed to meet this requirement are usually not practical to use for both physical and cost reasons Therefore 10 AWG is recommended as the most practical gauge for those situations The run length for both conductors has been figured into the total resistance Remember that a lower gauge number means a larger wire size Table 8 Recommended Cable Gauge Run Length Mini...

Страница 30: ...woofer and the woofers must have the same polarity Some amplifiers feature a parallel mode that makes this easy In this mode you connect the source to one channel and the amplifier feeds exactly the same power to both outputs If you cut the jumpers on a single woofer model the NL4 1 terminals continue to power the woofer The 2 terminals are looped through to the 2 terminals on the other NL4 but ar...

Страница 31: ...c territory Any modifications made to any parts or materials manufactured or supplied by Community shall immediately void all pledges of warranty or surety related in any way to the safe use of those parts and materials WARNING NON COMMUNITY RIGGING HARDWARE Non Community hardware used for rigging an iBOX loudspeaker must be certified by the supplier for this use and must be properly rated for saf...

Страница 32: ...valent bracket add an additional safety cable that is not attached to the OmniMount bracket This safety cable may be attached to the loudspeaker with a properly rated eyebolt such as the Community M10EYBLTKIT Eyebolt Suspension Properly rated M10 forged shoulder eyebolts may be used to suspend iBOX loudspeakers Such eyebolts are available from Community as part number M10EYBLTKIT kit of four M10 e...

Страница 33: ...three mounting locations on the yoke for the loudspeaker This allows the loudspeaker to be snugged up to the building structure at different aiming angles Using the i2W8 as a Front Fill Loudspeaker and i2W8 Working Load Limit The i2W8 s wide horizontal pattern and compact size make it an ideal front fill loudspeaker for use by itself or under another iBOX loudspeaker The i2W8 has two M10 rigging f...

Страница 34: ...ium throw and long throw applications Guideline 1 What is a Long Throw Loudspeaker Short throw medium throw and long throw refer to listeners located near the cluster front of the room in the center of the room or near the back of the room respectively Short throw medium throw and long throw loudspeakers then are designed to reach those categories of listeners To do so a short throw loudspeaker is...

Страница 35: ...chieve the best signal to noise ratio COMMISSIONING THE SYSTEM Commissioning is the process of optimizing the performance of the system after it has been installed There are several steps in commissioning including verifying the proper operation of each system component and adjusting system gains and levels The last step in system commissioning is known as system equalization or voicing Equalizati...

Страница 36: ...ubjected to abuse accident modification improper handling installation or repairs made without factory authorization or by anyone other than authorized Community Field Service Stations This warranty is void if the serial number has been defaced altered or removed Products covered by this warranty will be repaired or replaced at the option of Community without charge for materials or labor provided...

Страница 37: ...ges Community shall not be liable for any consequential or incidental damages including without limitation injury to persons property or loss of use Some states do not allow the exclusion or limitations of consequential or incidental damages so the above limitations and exclusions may not apply This Community warranty is not extended by the length of time which an owner is deprived of the use of t...

Страница 38: ...x 1 4 LF 1 x 12 HF 1 x 1 4 1 x 12 2 x 12 Input Connectors 2 x NL4 Barrier Strip 2 x NL4 Barrier Strip 2 x NL4 Barrier Strip 2 x NL4 Barrier Strip 2 x NL4 Barrier Strip 2 x NL4 Barrier Strip 2 x NL4 Barrier Strip 2 x NL4 Barrier Strip Enclosure 13 Ply Baltic Birch 13 Ply Baltic Birch 13 Ply Baltic Birch 13 Ply Baltic Birch 13 Ply Baltic Birch 13 Ply Baltic Birch 13 Ply Baltic Birch 13 Ply Baltic Bi...

Страница 39: ...Community iBOX Installation Operation Manual Page 39 DIMENSIONS Figure 16 iHP 1200 Series Dimensions Center of Gravity COG Center of Gravity COG ...

Страница 40: ...1 4 LF 1 x 15 HF 1 x 1 4 1 x 15 2 x 15 Input Connectors 2 x NL4 Barrier Strip 2 x NL4 Barrier Strip 2 x NL4 Barrier Strip 2 x NL4 Barrier Strip 2 x NL4 Barrier Strip 2 x NL4 Barrier Strip 2 x NL4 Barrier Strip 2 x NL4 Barrier Strip Enclosure 13 Ply Baltic Birch 13 Ply Baltic Birch 13 Ply Baltic Birch 13 Ply Baltic Birch 13 Ply Baltic Birch 13 Ply Baltic Birch 13 Ply Baltic Birch 13 Ply Baltic Birc...

Страница 41: ...Community iBOX Installation Operation Manual Page 41 DIMENSIONS Figure 16 iHP 1500 Series Dimensions Center of Gravity COG Center of Gravity COG ...

Страница 42: ...ct 50Hz 24dB Oct 30Hz 24dB Oct 35Hz 24dB Oct Drivers LF 1 x 15 MF 1 x 8 HF 1 x 1 4 LF 1 x 15 MF 1 x 8 HF 1 x 1 4 1 x 18 2 x 15 Input Connectors 2 x NL4 Barrier Strip 2 x NL4 Barrier Strip 2 x NL4 Barrier Strip 2 x NL4 Barrier Strip Enclosure 13 Ply Baltic Birch 13 Ply Baltic Birch 13 Ply Baltic Birch 13 Ply Baltic Birch Enclosure Angles Trapazoid 15 Sides Trapazoid 15 Sides Trapazoid 15 Sides Trap...

Страница 43: ...Community iBOX Installation Operation Manual Page 43 DIMENSIONS Figure 17 iHP 3500 Series Dimensions Center of Gravity COG Center of Gravity COG ...

Страница 44: ...ded Amplifier 1670W to 2400W 4Ω Sensitivity 1W 1m 99 dB SPL Maximum Output 1m 128 dB SPL Nominal Impedance 4Ω Minimum Impedance 3 3Ω Nominal 6dB Beamwidth 360 H 180 V Crossover Frequency N A Recommended HP Filter 25Hz 24dB Oct Drivers 2 x 18 Input Connectors 2 x NL4 Barrier Strip Enclosure 13 Ply Baltic Birch Enclosure Angles Rectangular Enclosure Mounting Rigging 16 x M10 Grille Perforated Steel ...

Страница 45: ...Community iBOX Installation Operation Manual Page 45 DIMENSIONS Figure 18 iLF 218 Dimensions Center of Gravity COG ...

Страница 46: ...Maximum Output 1m 121 dB SPL 124 dB SPL Nominal Impedance 8Ω 8Ω Minimum Impedance 4 5Ω 7 6Ω Nominal 6dB Beamwidth 120 H 60 V 90 H Top 40 H Bottom 70 V Crossover Frequency 1 2 kHz 1 5 kHz Recommended HP Filter 65 Hz 24dB Oct 55 Hz 24dB Oct Drivers 2 x 8 1 x 1 1 x 12 1 x 2 Input Connectors 2 x NL4 Barrier Strip 2 x NL4 Enclosure 13 Ply Baltic Birch Molded Fiberglass Mounting Rigging 6 x M10 None Gri...

Страница 47: ...X Installation Operation Manual Page 47 DIMENSIONS Figure 19 i2W8 Dimensions Mounting Yoke Dimensions M12L M12R Figure 20 M12 Dimensions Note M12L and M12R have the same dimensions Both models are shown for clarity ...

Страница 48: ...tal coverage would be 30 plus 30 plus 50 or 110 The area of overlap can be calculated by taking the combined rated coverage of the two loudspeakers and subtracting the total horizontal coverage of the array as calculated above As an example for a pair of 60 loudspeakers the combined rated coverage would be 120 For the tight pack array with a total horizontal coverage of 90 the area of overlap is 1...

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