Transcript
Spec No. 1734
[REV. 11.03.16] Page 1/4
with global components
grille | enclosure
Model No.
IMC12P-2W: Speaker System Includes 12" 150W driver, 2 cu.ft. enclosure and grille Ready-to-install high performance loudspeaker system for suspended installations features a 12 in. 150W driver in a 2 cu.ft. acoustic enclosure to reproduce music with exceptional quality. It's ideal for high energy, high ceiling applications like clubs and bars, sporting facilities, concourses, hotel ballrooms, transportation terminals, convention centers and exhibit halls. INCLUDES • Driver (12P150): 12 in. (8 ohm) 150W driver with robust motor structure, 38 oz. magnet, 2 in. voice coil and coaxially mounted high frequency compression driver for high power handling with excellent efficiency. See the driver spec sheet for more information. • Grille: Round perforated steel grille with white powder epoxy finish. • Enclosure: 2.0 cu.ft. precision-formed steel cylindrical enclosure (21 in. x 15.125 in. diameter) features 1-1/2 in. thick premium acoustic lining and forged 1/4 in.–20 eyebolts screwed into mounting nuts for secure suspended installation (using flyware by others). Externally accessible connections are terminated through a 4 in. x 4 in. flush cover plate. White powder epoxy finish. Note: A 3 cu.ft. cylindrical enclosure is available by special order if needed for architectural considerations. Call for model number and pricing. A&E SPECIFICATIONS The speaker for suspended installation shall be Lowell iMount® Model IMC12P-2W which shall feature a 12 in. (8 ohm) 150W driver mounted in a white cylindrical steel acoustic enclosure (21 in. x 15.125. in.dia.; 2.0 cu.ft. volume) with 1-1/2 inch thick acoustic lining, forged 1/4 inch-20 eyebolts screwed into mounting nuts for suspended installation using flyware by others. It shall include a perforated steel architectural grille with white finish. System frequency response shall be 57Hz–20kHz (+6dB) and 45Hz–20kHZ (+8.3dB) with average sensitivity of 95.7dB @1W/1M. Dispersion shall be 80 degrees conical @2kHz octave measured 6dB down. The system shall have a 12 in. driver with 38oz. magnet, 2 in. voice coil, and a coaxially mounted high frequency compression driver.
Features forged eyebolts for secure suspended instllation, and a rear cover plate for fast connections.
Features driver 12P150
Lowell makes every effort to provide accurate information while reserving the right to change specifications and/or improve manufacturing methods without notification. ©2016 Lowell Manufacturing Company, 100 Integram Dr., Pacific MO 63069 | 800.325.9660 | www.lowellmfg.com
Spec No. 1734
[REV. 11.03.16] Page 2/4
SYSTEM SPECIFICATIONS (IMC12P-2W) Driver No.
Driver Rating
Driver Size
12P150
150W 12 in. (8 ohm)
Driver Type
Enclosure Volume
Direct radiator LF 2 cu.ft. Coaxial compression HF
Enclosure Dimensions
System Response
System Dispersion*
System Sensitivity (SPL)**
21 in. H 15.125 in. dia.
57Hz–20kHz (+6dB) 45Hz–20kHz (+8.3dB)
80 degrees conical @2kHz octave -6dB
95.7dB Avg@1W/1M 117.5dB Max @150W/1M
* For help in determinging speaker spacing, go online (www.lowellmfg.com) and see the paper, "Distributed Speaker Spacing for the Integrator." An online tool (calculator) is also available. ** Maximum sensitivity is calculated based on the power rating and measured sensitivity.
TECHNICAL DRAWINGS
Factory installed 1/4 in.–20 forged eyebolts are ready to attach to flyware (by others)
1.375"
31.0" (3 cu.ft.)* 21.0" (2 cu.ft.)
15.125"
14.0"
Note: A 3 cu.ft. cylindrical enclosure is available by special order if needed for architectural considerations. Call for model number and pricing.
Note: A standard 4 in. x 4 in. electrical extender ring can be mounted for passthrough piping (in/out conduit) Speaker termination pocket behind 4 in. x 4 in. cover plate.
Acoustic lining (1-1/2 in. thick)
Factory-mounted driver
Lowell makes every effort to provide accurate information while reserving the right to change specifications and/or improve manufacturing methods without notification. ©2016 Lowell Manufacturing Company, 100 Integram Dr., Pacific MO 63069 | 800.325.9660 | www.lowellmfg.com
Spec No. 1734
[REV. 11.03.16] Page 3/4
dB (Pascals)
SPL vs. FREQUENCY (1W/1M, full space, on-axis)
Frequency (Hz)
IMPEDANCE See driver spec sheet for specifications and impedance curve. Speaker System Speaker System Nominal Impedance Minimum Impedance
8 ohms
6.8 ohms @137Hz
Speaker System Impedance Measured with a Typical 1kHz Impedance Meter 16 ohms
POLAR DATA (full space)
SCOPE of PERFORMANCE and POWER TESTS Lowell drivers and loudspeaker systems are tested to provide specifiers and contractors with data that reflects the performance of production products. Testing equipment includes the GoldLine TEF-20 analyzer (for performance measurements) and the LinearX LMS measurement system (for Thiele-Small Parameters). Power Rating is tested based on EIA Standard RS-426B. Frequency Response data is provided which is the measured frequency response range (defined by +6dB) which is useful in predictive engineering calculations. Sensitivity (SPL) data is presented in two ways: 1. Log Average SPL is a computer calculated log average of the SPL measured at 1 meter with 1 watt input over the stated frequency response range. 2. Maximum SPL is calculated based on the measured log average SPL and the 8ohm power rating of the speaker. Maximum SPL for speakers that do not include an 8ohm input, is calculated based on the measured log average SPL and the highest transformer power tap. Dispersion Angle is defined as the angle of coverage that is no more than 6dB down from the on-axis value averaged over the 2000Hz octave band. Since speech intelligibility is very dependent upon the 2000Hz octave, this specification is quite useful in designing speech reinforcement systems that provide even coverage and speech intelligibility. Thiele-Small Parameters for raw drivers are measured using the LinearX LMS measurement system. These parameters are useful in determining the optimum type and size of enclosure for a specific driver.
Polar Data is presented for the averaged one octave band surrounding the center frequencies of 1000Hz, 2000Hz, 4000Hz, and 8000Hz. Radial polar response curves show the relative change in sound pressure level as one moves from directly onaxis to an increasingly off-axis listening position. Since coaxial speaker drivers are symmetrical in the vertical and horizontal directions, only one set of polar plots will be presented for coaxial drivers and speaker systems incorporating coaxial drivers. Impedance Data may be represented in four different ways depending on the particular model: 1. Nominal Impedance is the generally accepted impedance value for use in making comparisons with competitive products. 2. Impedance Curve is a graphical representation of the 8ohm driver impedance measured in the lab and gives the impedance of the device over the audio frequency range. 3. Minimum Impedance is the lowest impedance measurement of the 8ohm driver at a frequency within the specified frequency response range of the speaker. 4. Impedance Measured at 1kHz is the reading expected to be measured by a technician in the field using a typical industry 1kHz impedance meter.
Lowell makes every effort to provide accurate information while reserving the right to change specifications and/or improve manufacturing methods without notification. ©2016 Lowell Manufacturing Company, 100 Integram Dr., Pacific MO 63069 | 800.325.9660 | www.lowellmfg.com
Spec No. 1734
[REV. 11.03.16] Page 4/4
INSTALLATION & WIRING The iMount™ loudspeaker is designed to mount in an open area using forged eyebolts (installed) and flyware (by others).
FIGURE 1: Typical Wiring
MOUNTING NOTE: The speaker system must be mounted in accordance with local, state, Federal and industry regulations. lt is the owner and/or user's responsibility to evaluate the reliability of any rigging/support method for their application. Rigging/ installation should be carried out only by experienced professionals. Hanging Suspended by Forged Eyebolts: The contractor shall employ the services of a qualified certified rigger for the installation of this product. Only load-rated hardware with a design factor of at least X5 should be used to suspend this product. The rigging system design is solely the responsibility of the installing contractor and the rigging design should be reviewed and certified by a professional structural engineer. Typical Wiring Method (Fig. 1): Remove the 4 in. x 4 in. cover plate located on the rear of the enclosure. Remove the knockout plug in the plate and install a UL Listed conduit connector or cable clamp as appropriate. Connect the field signal wiring to the two conductors sticking out of the rear of the enclosure (red is positive, black is negative). Push the connections and all excess wire into the enclosure and to one side of the transformer bracket. Reattach the cover plate to the enclosure.
FIGURE 2: Alternate Wiring (conduit)
Alternate Wiring Method — in/out conduit (Fig. 2): Remove the 4 in. x 4 in. cover plate located on the rear of the enclosure. lnstall an approved 4 x 4 extender ring, attaching it to the mounting holes where the cover plate was secured. Select wiring entry positions on the side of the extender ring and remove the corresponding knockouts. lnstall conduit connectors and secure conduit. Make wiring connections (red is positive, black is negative). lf the unit is being installed above a ceiling, push the wiring and connectors into the enclosure and to one side of the transformer bracket. Grille Installation: Mount the perforated grille over the speaker cone using 8- 32 screws provided.
Lowell makes every effort to provide accurate information while reserving the right to change specifications and/or improve manufacturing methods without notification. ©2016 Lowell Manufacturing Company, 100 Integram Dr., Pacific MO 63069 | 800.325.9660 | www.lowellmfg.com
