JBL 2245 PDF

JBL Incorporated, Balboa Boulevard, P.O. Box , Northridge, California U.S.A.. Technical Manual. JBLH. SPECIFICATIONS. Subwoofer JBL H. General specifications: diameter 18 inches, maximum power W. Thiele-Small parameters: frequency of self resonance Fs=20 Hz. Max Pwr. wRMS. Magnet Wt. 86 oz. Foam Surround Net Weight 22 lbs. Box 12cf, 44x29x21″ Box 23cf, 49x30x30″, Cone Sq.”;sq.M. Eff/Max SPL 95/.

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When you get the cabinets, remove the stock boat anchor drivers and sell them on Ebay, tear out the wiring and replace with better stuff.

The JBL Model H is a professional quality low frequency transducer designed for use in jlb studio monitors or other applications requiring high sensitivity and power capacity, as well as extremely low distortion and extended bass response.

In addition, a Flux Stabilizing Ring encircling the pole piece shall act to reduce flux modulation. On-axis response, measured at a distance of 2 m 6.

Subwoofer JBL H specifications.

This motor assembly is optimally balanced with a 25 mm 1 in long voice coil and carefully engineered suspension elements to allow maximum excursion linearity with complete freedom from dynamic instabilities. Rated power capacity shall be at least W normal program material.

Originally Posted by hjames. Originally Posted by quindecima. Results 1 to 15 of Is there anybody who has built a big enclosure for a ? A bigger box will get you lower also.

JBL continually engages in research related to product hbl. I haven’t yet heard Eminent Technologies fan type subwoofers, but they are very expensive and require an additional two add on rooms for cabinets.

JBL H, 18 INCH WOOFER

After a prolonged 16 Hz undertone in an organ solo for several minutes, my bowels actually cut loose, and I am not prone to that. Measured sensitivity SPL at 1 m 3. Extra Tabs by vBulletin Hispano.

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The SFG design, in combination with a Flux Stabilizing Ring around the pole piece, significantly reduces second harmonic distortion and provides exceptionally accurate low frequency reproduction.

Last edited by Lee in Montreal; at When you get the cabinets, remove the stock boat anchor drivers and sell them on Ebay As an indication of electromechanical conversion efficiency, the B1 factor shall be at least 21 newtons per ampere.

Performance specifications of a typical production unit shall be as follows: Components – H. Originally Posted by andychris. The sensitivity rating of JBL low frequency loudspeakers is based on a signal swept from Hz to Hz. Adjust your pampers accordingly. The voice coil shall be mm 4 in in diameter and shall be made of edgewound 22455 ribbon operating in a magnetic field of not less than 1.

I think the Adcom stacks are to keep the subs from moving out. I am not joking, infrasound in large quantities can hurt you.

Highest Recommended Crossover Frequency: All times are GMT Voice Coil Winding Depth: Additionally, the cone is coated with an exclusive damping formulation to ensure optimum mass and 2245.

I use a pair of ASH cabinets each with ibl H driver in them. For this reason, any current JBL product may differ in some respect from its published description, but will always equal or exceed the original design specifications unless otherwise stated.

Most of people build enclosures with JBL enclosure dimension bit is there sommeone that use bigger box? Continuous program power is defined as 3 dB greater than continuous sine wave power and is a conservative expression of the transducer’s ability to handle typical speech and music program material. Acoustic loading shall further extend the low frequency response.

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The time now is Nominal impedance ubl be 8 ohms. Subwooffer with JBL H. New materials, production methods, and design refinements are introduced into existing products without notice as a routine expression of that philosophy. Usable frequency response shall extend from 20 Hz to 2 kHz. Hello I will build a subwoofer with 1 x but for the moment I don’t know what volume to use. To achieve this performance, the H incorporates a new diecast aluminum frame, integrally stiffened cone with foam surround, mm 4 in diameter edgewound copper ribbon voice coil, and individually machined magnetic pole piece and back plate.

He built 2 more later on and has 4 in that stack – but I can’t find a picture of his final config right now. Now all I need is a handy closet! Your can also get an answer there.

The jnl box is no box infinite baffle.

JBL 2245H 18 Inch Woofer Factory Reconed

You should also glue every seam by reaching inside with an extension arm and turning the cabinets so the glue flows properly into the joints. After you are done, be careful that you don’t ruin your guts or make yourself permanently blind due to detached retinas.

The half-space reference efficiency shall be 2. It’s probably a good idea to use the B as a model. Originally Posted by JeffW. Always fun learning more This of course uses the BX63 for really low eq. At the bottom of the page, you can see a strip that says “similar threads”.