Frequently Asked Questions

You refer to these as home theater subwoofers, can they play music too?

Quite simply, the 24" driver was the reason I decided to start this company.  As you would expect of such a large woofer, it produces prodigious amounts of visceral bass at levels beyond the capability of existing subwoofers.  The most surprising thing when I first heard the driver was to learn it was playing up to 100 Hz yet was so clean and tight.  The 18" and 24" subwoofer drivers were developed with a focus on reproducing deep bass that is present in today's movies, yet most people do not realize how much sound information they are missing; even surprising movies like Toy Story 2 and How to Train Your Dragon have very deep bass.  With an 80 lb magnetic motor these subs are able to start and stop the mass of the subwoofer cone incredibly quickly.  With so much magnet force, when the sub is supposed to move, it moves, and when it is supposed to stop, it stops.  So while this subwoofer was designed with the focus of deep bass found in movies, it is a powerful, quick, and articulate subwoofer just as capable with music but at output levels that far exceed normal subwoofers.

How much does the subwoofer cabinet vibrate? How is it constructed?

The short answer is not much at all and you won't have to worry about the sub vibrating across the floor. The recessed sub design was selected so that we wouldn't see a huge rectangle/square of grill cloth as well as for strength. Starting from the outside, we have the outer front layer of 3/4" high-quality Baltic Birch plywood, which is veneered. Then we have 4 layers of the same plywood which act as spacers to handle the 5" of excursion the 24" driver is capable of producing. Then there are 2 more layers on which the sub mounts. The front super structure of 7 layers is then wrapped in 3/4" plywood on the sides, top and bottom to create an incredibly strong structure. There is another layer near the middle of the sub that parallels the front superstructure and braces the entire middle of the cabinet. Finally, there are 4 braces connecting the front to the middle to the back. The end result is a very strong cabinet that you could dance on, and yes, it has been verified to handle dancing by a grown man and his wife.

A second part of this question relates to panel resonance. Every panel resonates with vibrations and the trick is to make sure a panel's resonating frequency is outside of the usable frequency range of a speaker or subwoofer. Often it isn't a single panel that causes a problem but multiple panels with the same resonating frequency combining, which could result in audible vibrations. In this case, we were sure to use offset bracing to ensure no pair of panels would have similar resonating frequencies. Further, the panel's resonating frequencies of our enclosures are way above the audible range of subwoofers (greater than 200 Hz).

So while there may be some vibration, you could easily set a drink on the end table or side table sub and not have to worry (but please use a coaster). These are solid, high-quality enclosures that were meant to look good and perform even better. No need to worry about cabinet vibration.

Can I lay the Mariana 24SR on its side?

Yes. The Mariana 24SR can be positioned horizontally (37.7" wide) or vertically (28" wide).  However, if the side table option is selected, the standard position is horizontally.

Do your subs come with Digital Signal Processing (DSP)?

There are two types of Digital Signal Processing (DSP) in this discussion, amp DSP and room DSP. Our subwoofers do indeed come with DSP but they are meant for the manufacturer to optimize the subwoofer to the amp and to the enclosure. We use the built-in DSP on the amplifier to ensure the Mariana subwoofers play deep (below 10Hz in room) and yet are clean and nearly flat to 180 Hz. Another aspect of DSP is to integrate the subwoofer into the speaker system and room. The bass waves from a subwoofer are very long and will interact with a room; a different location for the sub could result in quite different output results. For this reason, we absolutely recommend some form of room-correction or similar DSP to ensure a subwoofer of this capability is fully integrated into your theater. Our subwoofer does not have this type of DSP so you will need to rely on your receiver or an external DSP system. We have experience with different room-correction and DSP systems so please contact us if you have questions.

Which sub should I choose?

These are not inexpensive subwoofers and we'd rather sell you the best sub for you or none at all than to have an unhappy customer. If you have any questions at all, please contact us so that we may help you choose the correct sub for your situation. There are many criteria that come into play in choosing a subwoofer such as room size, music/movie listening, sub placement, room DSP capability, and many others.

Why do you suggest against playing synthetic signals?

The amplifier used in Deep Sea Sound subwoofers is incredibly powerful, capable of producing 4,000 watts for several seconds as needed by some of today's demanding music and movies, which is much longer than most amps, even professional concert amps. This much power is able to destroy almost any woofer if used incorrectly. Depending on frequency and volume level, some synthetic signals (sine waves as an example) can be played for minutes while other settings could burn up a voice coil within a few seconds. My recommendation is to keep synthetic signals to moderate volume for a short period of time. If you have any questions, please don't hesitate to contact us.

What is your measurement process and equipment?

Here is a high level overview of the measuring process I use with equipment listed further down.
  • Setup in the middle of a field at least 75' from any tree or structure
  • Place the Earthworks M50 mic on the ground 6' in front of the sub (ground plane measurement)
  • Set gains with the computer and audio interface using both sound level calibrators (redundancy)
  • Set the subwoofer gain to measure at approximately 100db
  • Verify gain setting with both sound level meters
  • Take measurements using REW, SoundEasy, or TrueRTA
  • Switch microphones to the Earthworks M30 to verify measurement
Equipment
  • Motu 1248 Audio Interface
  • Focusrite Scarlett 2i2 Audio Interface
  • Earthworks M50 Microphone
  • Earthworks M30 Microphone
  • Reed SC-05 Sound Level Calibrator
  • Simpson 890-2 Sound Level Calibrator
  • Simpson 884-2 Sound Level Meter
  • Extech 407730 Sound Level Meter
  • Mogami Gold Studio Audio and Signal Cables
  • 100' 10-gauge Extension Cord
Measurements In East TN