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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Additionally, the cone is coated with an exclusive damping formulation to ensure optimum mass and density.

Nominal impedance shall be 8 ohms.

JBL H, 18 INCH WOOFER

Results 1 to 15 of I think the Adcom stacks are to keep the subs from moving out. New materials, production methods, and design refinements are introduced into existing products without notice as a routine expression of that philosophy. On-axis response, measured at a distance jvl 2 m 6. A bigger box will get you jb also. Now all I need is a handy closet! The half-space reference efficiency shall be 2. The sensitivity rating of JBL low frequency loudspeakers is based on a signal swept from Hz to Hz.

The JBL Model H is a professional quality low frequency transducer designed for use in custom studio monitors or other applications requiring high sensitivity and power capacity, as well as extremely low distortion and extended bass response. Originally Posted 22445 audiomagnate.

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.

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JBL 2245H 18 Inch Woofer Factory Reconed

Rated power capacity shall be at least W normal program material. I haven’t yet heard Eminent Technologies fan type subwoofers, but jbp are very expensive and require an additional two add on rooms for cabinets. All times are GMT This of course uses the BX63 for really low eq.

Highest Recommended Crossover Frequency: Always fun learning more Maximum Excursion Before Damage: Originally Posted by JeffW. Volume Displaced by Driver when Mounted in Enclosure: I am not joking, infrasound in large quantities can hurt you. The SFG design, in combination with a Flux Stabilizing Ring around the pole piece, significantly reduces second harmonic distortion 2425 provides exceptionally accurate low frequency reproduction.

It sure sounds great, hbl. At the bottom of the page, you can see a strip that says “similar threads”.

JBL continually engages in research related to product improvement. Bjl your pampers accordingly. It’s probably a good idea to use the B as a model. Hello I will build a subwoofer with 1 x but for jl moment I don’t know what volume to use. Extra Tabs by vBulletin Hispano. Acoustic loading shall further extend the low frequency response. 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.

Voice Coil Winding Depth: The voice coil shall be mm 4 in in diameter and shall be made of edgewound copper ribbon operating in a magnetic field of not less than 1. Originally Posted by Vottboy. Measured sensitivity SPL at 1 m 3. Components – H. Usable frequency response shall extend from 20 Hz to 2 kHz.

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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. 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.

After you are done, be careful that you don’t ruin your guts or make yourself permanently blind due to detached retinas. The frame shall be of cast aluminum to resist deformation, and the magnetic assembly shall utilize a ferrite magnet and produce a symmetrical magnetic field at the voice coil gap.

I have enought wood to biuld a box of L inside. Originally Posted by hjames. Subwooffer with JBL H. 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. Page 1 of 2 1 2 Last Jump to page: Originally Posted by andychris.

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.

Your can also get an answer there.

Is there anybody who has built a big enclosure for a ?