IsoAcoustics Aperta SUB XL Subwoofer Isolation Platform - Black

The Large Subwoofer Platform, Rated to 160 Pounds

The IsoAcoustics Aperta SUB XL is sold singly, one platform with four carpet discs in the box. It sits under a large front-firing or side-firing subwoofer of up to 160 pounds and raises it 1.5 inches. Nothing is bolted to the cabinet; the subwoofer stands on the platform.

A big subwoofer puts more energy into the floor than anything else in the room. The floor carries it through the house and sends part of it back into the box. IsoAcoustics designs the Aperta SUB XL so that energy is managed by isolators inside the frame, not by the floor.

Twice the Load of the Aperta SUB for the Biggest Cabinets

Fit, Load and Materials

The Aperta SUB XL carries up to 160 pounds. No minimum is published. An isolator loaded far under its rating never reaches its working range, so a subwoofer under about 80 pounds belongs on the standard Aperta SUB. The IsoAcoustics online weight selector confirms the match for your cabinet.

The platform is 14.5 inches wide, 16 inches deep and 1.5 inches tall, with a sculpted aluminum frame. Its shape lets it sit under the cabinet between the subwoofer's own feet, so the feet are not in the way. Measure the base of your subwoofer against those figures before you order.

Four carpet discs come in the box. On a hard floor the platform stands on its isolators. On carpet, the discs give the isolators a firm footing through the pile to the floor beneath, so the platform works the same way on either surface.

Who Is the Aperta SUB XL Best For?

• You have a subwoofer of 80 to 160 pounds — the XL platform carries it inside the working range in 1.5 inches of height
• You run a big sub in a shared building — IsoAcoustics designs the platform to keep cabinet energy out of the floor
• Your subwoofer sits on carpet — the four included discs give the platform a solid footing through the pile
• You want a fix without tools or modifications — the subwoofer stands on the platform, so it goes in and out in a minute
• Your subwoofer weighs less than about 80 pounds — the Aperta SUB, rated 80 pounds, keeps a lighter cabinet inside its working range

How Do You Set It Up?

Set the platform where the subwoofer will stand, with the IsoAcoustics logo facing forward. On carpet, place the four discs under the platform's feet first. With a helper, lower the subwoofer onto the platform so its cabinet rests on the frame. Check that it sits level, then play.

Pairs Well With

What most Aperta SUB XL owners shop next.

• Speaker stands — get the tweeters to ear height before you isolate
• Floor and carpet protection discs — a firm footing on carpet or a soft floor
• Speaker cables — the next link in the chain after the speakers are settled
• Speakers — the bookshelf and desktop models these are made to sit under

Frequently Asked Questions

How many do I need?

One platform per subwoofer. The Aperta SUB XL is sold singly with its four carpet discs, so order one for each subwoofer in the system.

Which Aperta SUB fits my subwoofer?

Go by weight and footprint: the Aperta SUB carries up to 80 pounds at 10.5 by 11.5 inches. The SUB XL carries 160 pounds at 14.5 by 16 inches. The IsoAcoustics online weight selector settles borderline cases.

Will it work with a down-firing subwoofer?

IsoAcoustics designs the Aperta SUB XL for front-firing and side-firing subwoofers. A down-firing driver needs room below the cabinet, so check the selector or ask us before you order.

Does it tilt or adjust in height?

The Aperta SUB XL has no tilt or height adjustment. It is a fixed, low platform, 1.5 inches tall, made to sit flat under the cabinet.

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