overall cone excursion at the

04 expense of limited bandwidth.

1.Dimensions: Whenever possi- ble, try not to make a box that has dimensions that are equal to, or multiples of, each other. For example, a 10" x 10" x 20" box would be susceptible to standing waves that may cancel some fre- quencies and add to cabinet reso- nance. A better alternative would be 18" x 11" x 10".

2.It is recommended that 3/4" (19mm) MDF be used to build the enclosure. Particle board is acceptable, but it is more difficult to work with. Enclosures for 12" and larger subwoofers, or small subwoofers, driven by high power amplifiers should be constructed out of 1" (25mm) material.

3.All joints should be glued and screwed; do not use nails. ”Deck“ or ”Zip“ screws are rec- ommended since they have coarse threads for better grip and don‘t require pre-drilling holes. Once the box has been test- ed, it should be sealed with caulk around all interior joints.

4.Apply a 1" thick sheet of poly- fill (available at fabric and craft stores) to all inside walls except the wall where the subwoofer is mounted. If this is not done, increase the recommended box volume by 10 percent.

5.Use PVC or ABS pipe (card- board tubing is acceptable if the walls are over 1/16" thick). Keep in mind the openings at either end of the port must be at least

one port diameter away from any obstructions inside or outside of the box. Minimum recommended port size is as follows:

8" Subwoofer – 2"

10" Subwoofer – 3"

12" Subwoofer – 3"

15" Subwoofer – 4"

Tools you will need:

•Straight-edge

•Saw (circular or table)

•Screwdriver (powered or screwdriver bits in a variable- speed drill are best)

•Sabre saw or keyhole saw (to cut hole for woofer)

•Measuring tape

•Soldering iron and solder

•Wire cutters/strippers

•Utility knife (to cut carpet)

•Pencil

Materials:

•3/4" or thicker MDF

•Caulk

•PVC or ABS pipe

•Deck screws

•Carpet

•Carpet Adhesive (aerosol-type works well)

•Speaker wire (12 or 16 gauge for woofers)

Take your time and mark the wood carefully before making any cuts. The old adage ”mea- sure twice and cut once“ definitely applies here. Use the straight- edge to make sure your lines are straight, and clamp it to the wood to use it for guiding the saw if you are using a circular saw. This will get you the straightest edges, the best fit and the best sound.

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JBL P800, P1200, P1500, P1000 owner manual
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P1500, P1200, P800, P1000 specifications

JBL, a renowned name in the audio industry, offers a remarkable range of professional audio systems, including the JBL P Series, consisting of models such as the P1000, P800, P1200, and P1500. Each of these speakers is engineered for exceptional sound quality, durability, and versatility, making them ideal for various applications, from live performances to home audio setups.

The JBL P1000 model is crafted with a powerful 10-inch woofer and a high-frequency driver that provides a balanced sound across all frequency ranges. With its robust cabinet design, the P1000 minimizes unwanted resonance, ensuring clear and focused sound reproduction. This model is particularly suited for smaller venues, offering an excellent balance between volume and clarity, and its lightweight structure enhances portability.

Moving to the P800, this speaker features an 8-inch woofer that delivers impressive low frequencies, combined with a smooth high-frequency response from its tweeter. The P800 stands out for its compact size and versatility, making it perfect for both smaller gigs and studio monitoring. Its unique Prime Array technology allows for a wide dispersion pattern, ensuring that sound reaches every corner of the room, making it an excellent choice for dynamic performances.

The JBL P1200 ramps up the power with a 12-inch woofer, offering deeper bass and broader soundstage capabilities. This model is designed for musicians who require powerful sound reinforcement in larger spaces. The P1200 utilizes advanced compression driver technology, which enhances clarity and detail in vocal performances. Additionally, it is equipped with a durable enclosure designed to withstand the rigors of touring while maintaining aesthetic appeal.

Finally, the JBL P1500 is the flagship model of this series, featuring a 15-inch woofer that produces thunderous lows and impressive sound pressure levels. This model is perfect for professional DJs and bands, providing enough power to fill large venues. The P1500 includes advanced features such as built-in EQ settings and an optimized crossover network, ensuring that every frequency is reproduced with precision. Its heavy-duty construction guarantees reliability in demanding environments.

In summary, the JBL P Series, with models P1000, P800, P1200, and P1500, showcases a commitment to sound excellence and innovation. Each model caters to different needs and preferences while sharing core features like high-quality components, robust design, and superior sound performance, making them invaluable assets for audio professionals and enthusiasts alike.
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