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| • | CNC machined motor structure |
| • | 200 oz double stacked strontium ferrite magnet |
| • | 3" voice coils with 1200 watts continuous power handling |
| • | Free Flow Cooling System |
| • | Multi-layer synthetic spider suspension |
| • | Proprietary EROM surround profile |
| • | SFB cone stock Synthetic Fiber Blend |
| • | Rubber Magnet Boot |
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New For 2007!!! The 3500 series now comes with a Composite Cone option! Now your 3500 can bump even more happily with a brightly colored composite cone.
The new 3500 'e' Series subwoofers have been redesigned to utilize more features and manufacturing techniques from the 9500 series. The "e" series changes include new cast baskets with more cooling and more excursion, larger magnets (the magnet weight jumps to 200 ounces), longer coil windings and increased internal motor cooling.
The 35s feature the same voice coils used in the 9500 Series - 3 inches in diameter with longer winding lengths than the previous Series. This large diameter voice coil and high energy motor combine to produce the tremendous amount of force needed to reproduce the impact in today’s bass intensive music. This motor system also utilizes the DD exclusive FREE FLOW COOLING SYSTEM, we increased the number of vents to spread the heat dissapation over a wider area. Seperate cooling vents machined into the voice coil, top plate and pole piece focus cooling air into the magnetic gap and around both sides of the voice coil with every up and down stroke. This high-tech, precision machined cooling system actually lowers the working temperature of the voice coil, thereby lowering the stress on the entire audio system. The harder the speaker works, the more air is blown onto the coil wire, cool, huh. Its one of our patent-pending designs and its only on DD products.
The 3500e also uses our American made, Synthetic Spider Suspension, our Synthetic Fiber Blend (SFB) cone stock, and EROM surrounds. The lead wires are Direct Connection terminations with 10 gauge battery cable hook-up wire. These features combine to make the 3500e Series drivers capable of over 3.0 inches of useable, continuous excursion. The 3500e Series are all about extracting every last bit of efficiency from a system design.
In keeping with stringent DD standards, the 35s have low moving mass, use a well controlled suspension and are powered by our own precision machined motor assemblies. These features make the 3500e Series drivers a perfect choice for a wide variety of system designs. The 3500e Series woofers have been part of award winning SQ systems, brutal ground-pounders, record setting SPL cars and countless enthusiast systems around the world. The DD way isn't the most cost effective way to build speakers, in fact its about 180 degrees off, but it produces the best speakers possible.