Genuine JBL Professional (8ohms) 2490H Mid-Range COMPRESSION DRIVER

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Seller: mdindustrialsalvage (3,754) 100%, Location: Baltimore, Maryland, Ships to: Worldwide, Item: 153457488230 JBLProfessional SeriesMID-RANGE COMPRESSION DRIVERSome Metal Horseshoe Mounts Available for Hanging, see pictures. I will throw them in for FREE if you ASK me for them when you make your purhase, if not they will come with the compression driver ONLY to save weight for shipping.Part # 2490HSPECS: 8 Ohms, 200 Watts Continuous Above 250 Hz to 3 kHzHandles high power levels over extended periods of timePlease Read(Great condition from major venue in the Baltimore /Washington area, that everyone is familiar with, and always maintained to the highest level.)These are great for any professional set up and would last for years. We guarantee these to be in perfect working order when they arrive or we offer a replacement or your money backGenuine JBL Professional (8ohms) 2490H Mid-Range COMPRESSION DRIVER Key Features:200 watts continuous program above 250 Hz, Optimized phasing plug design for low distortion, smooth response, and wide bandwidth, 100 mm (4 in), .08 mm (.003 in)thickness, titanium diaphragm, 76 mm (3 in) throat exit diameter, 100 mm (4 in) edge wound voice coilThe Model 2490H is a unique addition to JBL’s family of professional quality compression drivers. The design goal was to provide very high level sound pressure at low distortion over the bandwidth of 250 Hz to above 3 kHz. Extensive computer modeling, including finite element analysis and boundary element analysis, were used to optimize the magnetic structure, phasing plug, and diaphragm. This application of advanced technology has produced a smaller, lighter weight compression driver with better performance than previous high-power mid range transducers. A new phasing plug was developed with an optimized two slit configuration A five-to-one compression ratio produces very low distortion and smooth, wide bandwidth response.The new diaphragm design include JBL’s exclusive three-dimensional diamond pattern surround’ tuned to reduce fatigue inducing stresses in the membrane and support structure.Precision engineering and manufacturing processes provide controlled normal and suspension resonance modes. The diaphragm and suspension use 3 mil pure titanium for high stiffness and freedom from breakup modes.A long voice coil design using high temperature voice coil former material and adhesives enable the 2490 to handle high power levels over extended periods of time.¹U.S. Patent #4,324,312. Foreign patent pending.2490H Midrange Compression DriverArchitectural Specifications:The compression driver shall consist of a ferrite magnetic structure with all magnetic assembly parts machined from cast or extruded billet stock. The phasing plug shall be assembled of concentric horns to minimize phase cancellations. The diaphragm shall be .08 mm(.003 in) pure titanium pneumatically drawn to shape. Frequency response shall be controlled through the use of a three dimensional suspension structure. The voice coil shall be edge wound aluminum ribbon of not less than 100 mm (4 in) diameter, operating in a magnetic field of not less than 1.5 T (15,000 gauss).Performance specifications of a typical production unit shall be as follows: Measured sensitivity with a 45 mW input on a 76 mm (3 in)plane wave tube, averaged from 300 Hz to 4 kHz, shall be at least 123dB SPL. Measured sensitivity with a 1 W input at 1 m distance on axis from the mouth of a horn with a Q of 20 averaged in the 2 kHz octave band shall be at least 114 dB SPL. As an indication of electromechanical conversion efficiency, the Bl factor shall be at least 18 Tesla meters.Frequency response, measured on a terminated tube, shall be flat within ± 1 dB from 250 Hz to 2.5 kHz. Nominal impedance shall be 8ohms and power capacity shall be at least 200 watts normal speech or music program material.The compression driver shall be the JBL Model 2490. Other drivers will be considered for equivalence provided that submitted data from a recognized independent test laboratory verify that the above performance specifications are met Response on JBL 2393 Bi-Radial® HornFrequency response of the 2490H coupled to a JBL 2393 Bi-Radial Horn, measured on-axis at a distance of 1 meter with a l-watt (2.83 V rms) input in a reflection free environment, with impedance MD Industrial Salvage often purchases entire inventories of high end Industrial, Electrical, Automation, Manufacturing, and PLC processing parts and supplies from businesses in transition. These could be factories, machine shops, distributors or stores that are moving, updating or closing. Although the businesses may no longer have any use for the items we purchase, they are sitting in the maintenance department or store room awaiting use. For the most part these inventories are generally new, and in the original package. Occasionally items we purchase are used, and placed on the parts shelf as backups, and will be listed as used on our listing. Some of the original packaging may have writing, shelf wear, tears or stains, but the product inside is in new condition, unless listed as used. We offer these items at a greatly reduced price off of wholesale and retail. We guarantee these parts and supplies to be new, unless noted, and in working condition. If it is used, it was placed in the parts area as a working spare and is ready, We offer a 100% return and refund policy, no questions asked, so bid with confidence! To see our other electrical, industrial parts and supplies CLICK HERE to check out our store! And don't forget to add us to you favorites if you are on the watch for parts and tooling. Our inventory is ever changing and we honestly NEVER know what we have coming around the corner. General Shipping Rules Shipping is provided by USPS First Class and Priority for smaller items under 16oz., you may choose at check out. Shipping is provided by USPS Parcel Select , Priority, and FedEx for larger items up to 150lbs., you may choose at check out. Shipping is provided by Freight Carrier on much larger and heavier items over 150lbs. For a quote please provide us your zip code, whether it's a business or residence and, if you have a fork lift or dock or will need a lift gate truck.International Shipping We gladly ship international, and is available on all our products. We have found the eBay international calculator is often wrong, either showing an inflated price to you the customer, or charging to little costing us a substantial amount in additional shipping. So, we chose to self manage international shipping, please request a quote. Local pick up is available on most items by scheduling a pickup time, we are located in South Baltimore off Russell St. (295) near the Casino and Stadiums. Ebay restricts sharing our address prior to the sale. Once the sale is complete we will certainly give you our exact address for local pick-up purposes. Shipping fees will be waived or refunded.General shipping rules apply, unless listed or noted otherwise. Return/Refund & Feed Back PolicyWe absolutely want you to be 100% satisfied with your purchase. If for any reason you are unhappy with your purchase once it arrives, we ask that you please email us, call us with the number provided with your item on the packing slip/invoice, or if you've misplaced it, you can request our contact information, including number, through the advance search at the top of the page. Our hours of operation for phone contact are Mon-Fri 9am-3pm Eastern Standard Time. Please, before getting upset or leaving negative feedback, call or email us and give us the opportunity to make things right and or issue you a full refund. ContactWhile we love to hear from our customers, eBay policy strictly prohibits sharing contact information prior to the sale. If you have any questions prior to the sale, we ask that you please email us through eBay. Once the sale is complete you can request our contact information, including number, through email or the advance search at the top of the page. If for any reason you are unhappy after your purchase, or after speaking with us, we can easily cancel your sale and refund 100% of your purchase and shipping. We are available by email and phone Mon-Fri 9am-3pm EST. About Us Md Industrial Salvage is a different type of recycling company. We have operated in Baltimore and surrounding areas since 1996. After starting out rescuing fireplace mantles and cast iron door locks from construction dumpsters, we have opened our eyes to may types of waste that are often over looked and fall through the cracks. Our focus is, and always will be vintage items of the highest quality. But with our eyes now open we put a lot of effort in bringing you high end industrial and electrical parts as well. All our items are salvaged and are for the most part American Made. One week we could be in an old School or Brewery, the next week a Factory, and the following week and Shipyard or Power plant, you just never know. Also, one day we may be removing Vintage lighting, the next day Signs and Vintage blueprints and the following day cleaning out a machine shop or high end parts room. We literally have NO idea what we have coming around corner, so make sure you add us to your favorites and check back often. Also, check out sister sites, mdarchitecturalrescue. If your looking for things of a more a collectible nature visit the store by CLICKING HERE!Also check out balmerglass if you're looking for some unique or interesting glass items. You can visit the store by CLICKING HERE! To see additional eBay items I have listed in my mdindustrialsalvage store CLICK HERE! Condition: Used, Condition: Great Condition, Hanging Mounts Available for FREE, Just ask after purchase. If not they will come JBL driver only., Brand: Electro-Voice, Suited For: 16ohms, Type: HIGH FREQUENCY REPRODUCER TRANSDUCER, MPN: 84233, Model: 2490, Bundle Listing: Hanging Mount Available for FREE, Just ASK!, Location: A.3.Table

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