Atrend 18HH-SVL single 18-inch Heavy Hitter LED enclosure with black carpet, acrylic window and multicolor interior lighting shown in blue
Atrend 18HH-SVL feature card showing acrylic viewing window, app and remote controlled multicolor LEDs, double MDF sub baffle and Supreme terminals
Atrend 18HH-SVL dimension graphic: 35 inches wide, 23 inches high and 24 inches deep, with double baffle and LED control callouts
Atrend 18HH-SVL specification highlights for tuning, net volume, port area, black carpet, MDF double baffle and triangular internal bracing
Atrend Supreme heavy-duty binding-post terminal cup supplied with the 18HH-SVL Heavy Hitter LED subwoofer enclosure
Atrend 18HH-SVL single 18-inch Heavy Hitter LED enclosure with black carpet, acrylic window and multicolor interior lighting shown in blue
Atrend 18HH-SVL feature card showing acrylic viewing window, app and remote controlled multicolor LEDs, double MDF sub baffle and Supreme terminals
Atrend 18HH-SVL dimension graphic: 35 inches wide, 23 inches high and 24 inches deep, with double baffle and LED control callouts
Atrend 18HH-SVL specification highlights for tuning, net volume, port area, black carpet, MDF double baffle and triangular internal bracing
Atrend Supreme heavy-duty binding-post terminal cup supplied with the 18HH-SVL Heavy Hitter LED subwoofer enclosure
Atrend

18HH-SVL | Heavy Hitter LED Single 18-Inch Vented Subwoofer Enclosure

In stock
SKU: 18HH-SVL
$790.00
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Built in the USA Made by Atrend with 30+ years of enclosure experience.
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Product details

  • SKU 18HH-SVL

Did you know Atrend builds custom boxes? Head over to our Build your Box page for more information

ATREND HEAVY HITTER LED SERIES

Single 18-inch. Serious bass presence.

The largest driver format in the Heavy Hitter LED lineup. The 18HH-SVL combines an up-firing subwoofer layout, front-facing venting and a windowed, illuminated interior in a clean black-carpet enclosure.

Built to be heard. Designed to be seen.

The Heavy Hitter LED Series brings show-quality visual detail to the high-output subwoofer enclosure. A white-painted interior spreads the multicolor LED glow behind clear acrylic, while black carpet gives the exterior a clean, understated finish. Choose your lighting with app and remote control; the blue shown in the images is just one color setting.

This single 18-inch configuration is intended for high-output and SPL-focused systems. Match your exact subwoofer to the enclosure volume, cutout, mounting depth and internal clearance before selecting your build. Subwoofers are not included.

Construction that supports the build

  • 2 inch Double Sub Baffle: two 1-inch MDF layers with a 0.75-inch flush-mount recess.
  • Heavy-duty MDF construction: 1-inch main panels with 0.75-inch sides and vent walls.
  • Extra internal bracing: 45-degree triangular corner bracing.
  • Clean acrylic installation: windows mounted from inside on a supporting lip, without exposed exterior fasteners.
  • Supreme terminal cup: heavy-duty binding posts for your speaker connections.
  • Black carpet and white interior: a dark exterior paired with an illuminated viewing area.

Model specifications

Model 18HH-SVL
Configuration Single 18-inch, up-firing
Outside size target (W × H × D) 35 × 23 × 24 inches
Tuning target 32 Hz
Total net volume target 5.5 ft³
Total port area target 88 in²
Top baffle / recess 2 inches total / 0.75 inch recess
Lighting Multicolor LED; app + remote control
Exterior / interior Black carpet / white painted interior

Design preview: dimensions and acoustic values are preliminary targets, subject to final enclosure validation. Images illustrate the planned LED design.

Choose the right fit

Nominal subwoofer size alone does not guarantee fit. Check the basket cutout, outside frame diameter, recessed mounting seat, installed motor depth, pole-vent clearance and the driver manufacturer’s enclosure recommendations. The up-firing driver must clear both internal vent baffles. Contact Atrend with your exact subwoofer model for fitment guidance.

Enclosure only. Subwoofers and amplifier are not included.

Not quite what you need?

Need a different size or a box tailored to your setup? Explore Atrend’s custom enclosure options with our Build Your Own Box builder.

Build Your Custom Box →
Box Depth (Width x Height x Depth)
Volume Per Sub. (Net Vol. Per Sub)
Tuning Frequency (HZ)
Subwoofer Mounting Depth(Inches)
Outside Finish Materials
Material Thickness of Box (Inches)
Additional Notes