July 20, 2018 -- The soon to be retired D4.90 never let users down. It consistently accomplished its goals of being a compact, easy to install, powerful and reliable little amp. And yet, DD Audio saw the potential for so much more and decided the time for a revision was now. Armed with technology and a plan based on user feedback, they set out to better the already installer and customer approved D4.90.

This month DD Audio is proudly rolling out the D4.90’s replacement and upgrade with the new D4.100. The D4.100 is every bit as versatile and reliable as its predecessor with features such as five-way protection, clipping indicator, heavy duty printed circuit board, 4 gauge set screw power terminals, and 12-gauge set screw speaker terminals. New features include panel mounted RCA inputs and a low voltage indicator. Performance improvements were made to the variable high-pass/low-pass/band-pass crossovers, power supply, and output section. And of course, as with the D4.90, the D4.100 is a marine grade amplifier with versatility and easy installation in-mind.

What really separates the D4.100 from its predecessor is power. The continuous wattage went from 90x4 / 240x2 up to 100x4 / 300x2 @ 4 ohm and from 120x4 to 150x4 @ 2 ohm. What’s more impressive is that DD Audio’s engineers achieved these improvements without sacrificing size. They accomplished this by removing all redundancies and under-utilized components, and focusing on an ultra-efficient design for outstanding performance.

The D4.100 is the now even more perfect little all around multi-channel amp. Ideal for space-constrained installs with enough power to easily drive factory speaker upgrades and beyond.

Wednesday, August 23, 2023 - Oklahoma City, OK - DD AUDIO®, a manufacturer of high-quality mobile audio products is proud to introduce the “f” revision of their venerable 600 Series subwoofers. In the previous “e” revision they got bigger and better; this latest “f” revision received thermal cooling engineering enhancements, making them even more efficient when performing for longer periods of time.

DD AUDIO’s design philosophy is to maximize efficiency first, optimizing power to sound as best as possible. This was the design basis behind their Free Flow Cooling System back in 2000. They introduced cross drilled cooling vents through the pole piece and top plates, gap vents in the voice coil gap and cooling holes in the voice coil. The harder the speaker played, the more air was pumped through the motor. Heat is a byproduct of vigorous play, motivating their engineering to continuously push the boundaries of what is possible.

The 600 Series revision “f” incorporates added thermal transfer, facilitating the movement of heat from heat-generating regions to cooler areas, thereby increasing the thermal movement from the voice coil outward. The collaboration of a freshly machined aluminum cooling tube positioned within the pole vent and a substantially thicker, vented aluminum rear motor heat sink synergistically achieves optimal heat extraction. This enables any sound enthusiast to play louder and longer.

Increased power demands greater Xmax, and the enhanced excursion of the new 600f model meets this requirement. With the top plate increased to 20mm and the voice coil winding lengths extended, coupled with the presence of both motor steel and billet aluminum, more effective heat dissipation from the coil is achieved across all conditions, ultimately optimizing long-term electrical efficiency.

Increased Xmax and excursion necessitated enhancements to the moving system as well. Taller surrounds have been tooled and spider refined to fully optimize the new motor design. The taller surrounds are double-stitched to fiberglass loaded, non-pressed cones and the utilization of double layer, multiple spiders uphold DD tradition of long term durability.

More Xmax and more excursion, combined with a cool as “f”, super edgy heatsink and motor boot designs make these revisions the mother “f” of all revisions!

Oklahoma City, Okla., October 2nd, 2018 -- DD Audio will be helping the 2018 car audio competition season go out with a bang by proudly sponsoring three of the most popular events in the car audio world: USACi Finals, Car Audio Championships and MWSPL Finals.

The first event in this trio will be the United States Autosound Competition International (USACi) Finals taking place Oct. 5-7 in Wichita Falls, TX at the J.S. Bridwell Arena. DD will be sponsoring winners at the USACi event with Second Place Rings and Third Place Trophies.

Along with getting to check out some of the loudest and best sounding systems in the country attendees will get the chance to grab demo from DD KONG and the DD Audio demo team. Next, competitors will be pitted head to head in the DD Audio sponsored SPL Hall at the Car Audio Championship Oct. 13-14 in Louisville, KY at Broadbent Arena. The Car Audio Championship features three sanctioning competition bodies (dB Drag, MECA, IASCA) joining forces to host this world-class event.

Rounding out these awesome events will be the Midwest SPL Finals Oct. 27-28 in Sedalia, MO at the Missouri State Fair Grounds. After competition commences Saturday night, competitors can celebrate this year’s audio accomplishments at the Official MWSPL After Party sponsored by DD Audio. DD KONG will also be on hand demoing for the pleasure of all attending bassheads.

DD Audio would like to thank all the organizations for arranging these events year after year as well as the competitors and spectators who keep the sport alive and growing. They also extend a very big “Good Luck” to the competitors who sacrifice time, money and probably some sanity for their place in history. Get those rings and trophies!