Highlights

• Build your own ultra-compact subwoofer with powerful output capability
• The powerful 8″ Ultimax driver offers unmatched low-end response for its size
• Easy to assemble MDF enclosure give everyone the ability to build their own subwoofer

Product details

Dayton Audio 8″ Ultimax Subwoofer and Cabinet Bundle

About the Cabinet

This particular cabinet is designed specifically for the Dayton Audio 8″ Ultimax subwoofer, but works for any subwoofer with an overall diameter of 209.5 mm or less, and a cutout requirement of 190.5 mm or less. When used together with minimal fill, the box and subwoofer combine for a Qtc of 0.68 and an f3 of 45 Hz.

During the CNC manufacturing process, rabbets and dadoes are cut into the back panel for precise panel alignment. A unique two-piece brace adds superior rigidity without affecting the subwoofer’s performance. Both side panels feature 18 mm rabbeted extensions with rabbeted recesses to perfectly install the first piece of the two-part, double thick baffle.

The end result is a resonance-free, sealed subwoofer cabinet that is purpose-built to extract the best performance from Dayton Audio’s 8″ Ultimax subwoofer without taking up much floor space. All that’s left to do is finish it to match your décor or paint it to stand out. When your friends ask about it, you get the pleasure of saying, “I built it myself!”

Specifications: Panel thickness: 18 mm, the front baffle is 36 mm • Panel material: Medium Density Fiberboard (MDF) • Finished net cabinet volume: 21.2 L • External dimensions: 330 x 330 x 349 mm • Subwoofer recess: 12.7 mm • Weight: 9 L • Holes (# and size in mm): 8 x 5,0 mmØ.

About the Subwoofer

The Ultimax Series of dual voice coil subwoofers, from Dayton Audio, are not for the faint of heart. Built using the latest in subwoofer technology, Ultimax subwoofers are the pinnacle of low frequency driver design. An Ultimax subwoofer tests the strength of your foundation with fast, articulate, gut-wrenching bass.

Over 1-1/4″ of travel (16 mm Xmax) is kept completely linear through the use of dual spiders that also limit distortion and rocking modes. “Tall-boy” rubber surrounds with integrated gaskets maintain driver surface area during extreme excursion moments. Thick, one-piece Nomex honeycomb covered cones are covered with woven, heavy-duty glass fibers creating ultra-still cones that resist deformation.

Specifications: Power handling: 300 watts RMS/600 watts max • Le: 1.14 mH • Impedance: 4 ohms (2 ohms/coil) • Re: 4.2 ohms • Frequency range: 30-800 Hz • Fs: 31.6 Hz • SPL: 84.2 dB 2.83V/1m • Vas 0.75 cu. ft. • Qms: 2.51 • Qes: 0.75 • Qts: 0.58 • Xmax: 16 mm • Dimensions: Overall diameter: 210 mm, Cutout: 188.9 mm, Mounting depth: 143.5 mm.

Note 1: All parameters derived with voice coils wired in series.

Note 2: Here is a list of what you need to build this subwoofer-cabinet bundle that’s not included and where to find it on our webshop:

Passive: When building passive, the kit requires a low passfiltered signal.

• External amps: Dayton Audio DTA-100LF / Dayton Audio SA230
• Speaker wire
• Binding posts

Active:

• Plate amps: Monacor SAM-500D  / Monacor SAM-300D
• Scribing for cutout: No
• Braces have to be cut out too

Needed for both:

• Screws: 8 x 081-425
• Feet  (optional)
• Coating (optional)
• Damping material (optional for tuning the response): Visaton 5070