The21 SUB WF PRO PASSIVE SEALED

The21 SUB WF PRO PASSIVE SEALED is an application-specific version of our highly regarded The21 SUB PRO PASSIVE SEALED. The WF designation in the model name stands for WaveForming. Use of Trinnov’s WaveForming technology determines not only the number of subwoofers on both the front and rear walls, but their precise locations on each wall, as well. Taking into consideration the locations of the front wall screen channel loudspeakers and the rear wall loudspeakers, the size and shape of the subwoofer cabinets is critical to ensure both location flexibility and realized performance.

When customers experience the unparalleled output and uncolored sound of The21 SUB WF PRO PS, the measured test results we publish translate perfectly to realized performance. ASCENDO’s policy is to be completely transparent and publish measurements done by independently certified third-party labs to provide factual data, thereby enabling informed, educated decisions. The The21 SUB WF PRO PS subwoofer is so far above and beyond the competition in every aspect; refined musicality, tightness, and output levels suitable for a 21″” driver. It is also engineered to operate perfectly in sync (in phase) with our Infrasonic subwoofers; The24 PRO, The32 PRO, The50 PRO, The80 PRO when there is a desire to reproduce movie content below 20Hz with the same authority, precision, and musicality.

Compared to conventional subwoofer motor concepts, the ultra-modern double-gap motor of this custom-made 21″ driver with two outer and two inner voice-coils enables more linear travel and much faster directional changes with higher sound power and significantly lower power compression. SPECIFICATIONS (selection)
Speaker type

21-inch forward-firing, dual gap motor structure with 2 inner and 2 outer voice coiles, neodymium motor.

Xmax

18 mm excursion each direction (36 mm linear), voice coil remaining in homogeneous magnetic field, linear and lowest distortion

Passive | Active

Passive

Recommended amplifiers

1Ch DSP + Amplifier are required. Min. recommended amplifier: 109 Vrms, 154 Vpk, 27,3 A; equivalent to 3000W@4Ω with correct RMS & Peak limiting & compression settings.

Recommended ASCENDO amplifiers

(With additional external 1CH DSP: AIA2-6004), DSP4-10K2 (IS), DSP4-20K2 (IS)

Principle

Sealed

SPL (peak / half space 2 pi)

Calculated data
139 dB @63 Hz peak

Frequency range

Calculated data
55 Hz – 500 Hz / -3 dB
28 Hz – 500 Hz / -15 dB

Efficiency

97 dB / 1W/m

Power handling

4000 W

Impedance

4 Ω

Air volume displacement

2,88 L / in comparison 21″ standard cinema subwoofer 1,76 L

Directivity horizontal x vertical in Deg°

360°

Input Terminal

Neutrik

Enclosure

Internally braced birch ply and MDF

Width

24,02″ I 610 mm

Hight

24,02″ I 610 mm

Hight with feet

25,00″ I 635 mm

Depth without grille

20,39″ I 518 mm

Depth with plug

20,79″ I 528 mm

Weight

94,80 lbs I 43 kg

Finish

Structural paint black

Custom colour options

Piano lacquer, colour of choice, matt or other finishes upon request

Shape customization

Upon request

Mounting

Floor standing with feet

The21 SUB WF PRO PS is supplied with a front cover as standard

Technical modifications subject to change without further notice

Share

We use cookies to personalise content and ads, to provide social media features and to analyse our traffic. We also share information about your use of our site with our social media, advertising and analytics partners. View more
Cookies settings
Accept
Do not accept
Privacy & Cookie policy
Privacy & Cookies policy
Cookie name Active

Who we are

Suggested text: Our website address is: https://wave-es.com/new.

Comments

Suggested text: When visitors leave comments on the site we collect the data shown in the comments form, and also the visitor’s IP address and browser user agent string to help spam detection. An anonymized string created from your email address (also called a hash) may be provided to the Gravatar service to see if you are using it. The Gravatar service privacy policy is available here: https://automattic.com/privacy/. After approval of your comment, your profile picture is visible to the public in the context of your comment.

Media

Suggested text: If you upload images to the website, you should avoid uploading images with embedded location data (EXIF GPS) included. Visitors to the website can download and extract any location data from images on the website.

Cookies

Suggested text: If you leave a comment on our site you may opt-in to saving your name, email address and website in cookies. These are for your convenience so that you do not have to fill in your details again when you leave another comment. These cookies will last for one year. If you visit our login page, we will set a temporary cookie to determine if your browser accepts cookies. This cookie contains no personal data and is discarded when you close your browser. When you log in, we will also set up several cookies to save your login information and your screen display choices. Login cookies last for two days, and screen options cookies last for a year. If you select "Remember Me", your login will persist for two weeks. If you log out of your account, the login cookies will be removed. If you edit or publish an article, an additional cookie will be saved in your browser. This cookie includes no personal data and simply indicates the post ID of the article you just edited. It expires after 1 day.

Embedded content from other websites

Suggested text: Articles on this site may include embedded content (e.g. videos, images, articles, etc.). Embedded content from other websites behaves in the exact same way as if the visitor has visited the other website. These websites may collect data about you, use cookies, embed additional third-party tracking, and monitor your interaction with that embedded content, including tracking your interaction with the embedded content if you have an account and are logged in to that website.

Who we share your data with

Suggested text: If you request a password reset, your IP address will be included in the reset email.

How long we retain your data

Suggested text: If you leave a comment, the comment and its metadata are retained indefinitely. This is so we can recognize and approve any follow-up comments automatically instead of holding them in a moderation queue. For users that register on our website (if any), we also store the personal information they provide in their user profile. All users can see, edit, or delete their personal information at any time (except they cannot change their username). Website administrators can also see and edit that information.

What rights you have over your data

Suggested text: If you have an account on this site, or have left comments, you can request to receive an exported file of the personal data we hold about you, including any data you have provided to us. You can also request that we erase any personal data we hold about you. This does not include any data we are obliged to keep for administrative, legal, or security purposes.

Where your data is sent

Suggested text: Visitor comments may be checked through an automated spam detection service.
Decline All
Save settings Accept All
Cookies settings