Polk Audio DX8 User Manual download pdf (Page 5)

wood glue in combination with wood screws for the strongest joint. We also suggest that

you use one screw about every three inches along the seams of your enclosure. Assemble

the enclosure as shown in the above diagram but leave one side off. We suggest that you

leave off the baffle board, this will allow you to seal your enclosure more easily, and an

air-tight seal is crucial! The best way to insure an air tight seal is to seal the inside of your

enclosure with quality silicone caulk. This also includes sealing around your input termi-

nal cup, and if you are using a ported enclosure, around your port. It is not advised to use

silicone around your subwoofer when mounting it to the baffle. Instead, we recommend

using the foam gasket weather stripping supplied with your dX subwoofer. When mounting

your subwoofer to the baffle board, pre-drill your mounting holes. This will make the

mounting of your subwoofer easier and will help prevent damage to your subwoofer from

a slip of the drill. When securing your subwoofer to the enclosure we recommend using

bolts and tee-nuts, but if you prefer, you can use wood screws. Whichever you use make

sure they are at least 1.25" long. This will insure a good grip into the wood.

One last thing you could do to your enclosure before installing it, is stuff it. The

primary reason for stuffing an enclosure is to “trick” the woofer into thinking that the

enclosure is larger than it actually is. You would want to do this if you build your box

smaller than the recommended size. By stuffing the box you can build the box as much

as 10% smaller than recommended, and achieve the same net result as the full size

unstuffed box. The easiest way to do this is to use dacron pillow stuffing. It can be bought

from craft stores fairly inexpensively. The rule of thumb for “stuffing” your enclosure is

1 pound of dacron per cubic foot. When putting the Dacron into your enclosure, do not

pack it in, rather place it evenly around the inside the enclosure. When stuffing a ported

enclosure it is important not to obstruct the port or the vent on the back of the sub

with Dacron.

Although your new dX subwoofers were designed to work in a wide variety of enclosures

and configurations, we have included only the most popular ones. For more enclosures and

configurations, please contact your local authorized Polk Audio dealer. We hope that this

manual has helped to take the mystery out of designing an enclosure for your new Polk

Audio dX Subwoofers.

(Refer to insert for recommended enclosure design)

What If I Need Help?

Good luck to you, and enjoy your new Polk dX Subwoofers. If you need assistance or have

any questions, call 1-800-377-7655 between 9am and 6pm, Monday through Friday Eastern

Standard Time.

Premium Performance Loudspeakers 9

dX Series

8 Premium Performance Loudspeakers

dX Series

By looking at the chart at the end of the technical sheet, you find that this usable

volume is slightly more than double the recommended volume for a single dX10, in

either a sealed or vented enclosure. Assuming that you will be using a pair of woofers,

this will work out well.

If you are using a single subwoofer, you can cut your width in half. Since we will

be using a pair of dX10 subwoofers, for our sample enclosure, we now need to determine

the center divider displacement. This can be figured out by multiplying the height x depth

x thickness of the divider (in our enclosure the thickness of the divider will be the same

as the rest of our enclosure, 3/4") and subtracting that number from the total usable

cubic inches.

You now have all the dimensions you need to begin cutting out your wood. The

illustration on page 7 shows a diagram of the enclosure with all the panel sizes that

need to be cut.

After you have cut all of the wood, it’s time to start assembling your enclosure. Before

you assemble your enclosure there are a few things we recommend doing. You will need

to cut out the hole for your Dynamic Balance

subwoofer and your terminal cup, and

pre-drill the holes for your screws. The terminal cup is a connector that allows you to

plug and unplug the wires from your amplifier into the enclosure. You may want to have

a buddy help you with assembly, since it’s hard to hold the pieces together and assemble

them at the same time. When building your subwoofer enclosure we suggest that you use

Affix foam gasket

sections the back of

the basket rim as

shown.

Gasket must be

applied if install

requires a top-mount

1 2 3 4 5 6 7

Comments to this Manuals

No comments

Polk Audio DX8 User Manual Page 5

Comments to this Manuals

Related products and manuals for Loudspeakers Polk Audio DX8