Seaton Sound Submersive HP

Seaton Sound SubMersive HP+ Sealed Subwoofer 4,000 Watt Dual Opposed 15" Drivers in Black Maple Finish

Originally purchased in July of 2021 for $2,995 plus shipping. 

The SubMersive HP+ is a high power subwoofer solution utilizing a pair of 15″ sealed woofers on opposite faces of the enclosure.  Each HP+ unit with its 4,000W amplifier can power not only its own pair of sealed 15″ woofers, but also and additional SubMersive HP-Slave unit.  In-room extension to below 10Hz is possible in the largest to the smallest of spaces.  Slave units can be placed separately from the HP+ unit such as one HP+ in the left front corner, and a connected HP-Slave unit in the front right corner, or units can be stacked for greater headroom from the same footprint.

SubMersive HP+ & HP-Slave Details and Specifications:

Amplifier & Controls:

• 4000W continuous power amplifier (with slave connected)
  • 2400W continuous power as a single unit
  • Capable of driving our passive SubMersive HP-Slave to the same levels as a single HP+
  • 4 Conductor Neutrik SpeakON connection for powering optional slave unit
  • US designed, high current, high duty cycle, class D amplifier design
  • High efficency of up to 95% for maximum power from available home circuitry
  • Fully Manufactured in the USA (board level up)
  • Nominal 120V operation (HP i+/F2i+ version available for 208-240V operation)
  • IEC Power Cord (10′ length included) – right angle plug available
• Connection options
  • 12V trigger and auto sensing – 3.5mm mini-cable connection
  • LED indicator for power, standby or error codes.
  • XLR -Female input (LFE/mono) with looping, XLR – Male output (internal Y connection)
  • 2 summed RCA inputs for LFE or Stereo inputs
• Digitally programmable, detented, control knobs for precision adjustment and tuning
  • GAIN (volume) control – wide range for matching any system
  • LF Adjust (low shelf/adjust extension/room sizing) enabling adjustment of low frequency extension from 12Hz to 27Hz or +/- 8dB shelf (see graphs).
  • Low pass crossover 30-120Hz + 200Hz, precise, digital, Linkwitz-Riley 4th Order fitlers (24dB/oct)
  • Delay adjustment – 0-20ms for multiple subwoofer blending
• Proprietary DSP performance optimization
  • Smooth anechoic/outdoor frequency response
  • Carefully optimized, proprietary overload protection – never fear for the well being of your subwoofer while the SubMersive maintains composure to much more intense playback levels
  • Smooth power response to 200Hz for seamless crossover with compact speakers
  • Shallow sealed roll off maintained in all LF Adjust settings
  • Shallow low frequency roll off typically yields 8-12Hz in-room extension
  • LF Adjust shelving & room size adjustment allow for a best fit with large to small rooms

Drivers & Design:

• Dual opposed 15″ sealed subwoofer
• Same acoustic performance as SubMersive F2+
• Custom designed 15” woofer with 3” VC
• Cast 12 spoke basket with large under spider venting
• Kevlar-reinforced paper cone
• Extended pole for lower distortion
• Vented magnetic gap for low operational noise and thermal cooling
• Made in USA

Enclosure:

• Common enclosure to ensure matching in driver output
• Locally produced with custom-tooled lock mitered construction
  • Pre-veneered shell cut by high precision CNC router
  • Pre-veneered sheet is machined pressed for superior veneer adhesion
  • Lock mitered joints insure sharp edges and matched wood grain wrapping around the visible front, top, and rear.
  • 1.5” thick driver mounting baffles
  • Full windowed bracing with dual-opposed cabinet to eliminate enclosure vibration
  • Opposed force configuration of drivers insures zero walking or rocking of enclosure
  • Selection of available wood species and stain options
• Magnetically secured grills with no pegs to break or see when the grills are off
• Dimensions: 24.25″ W x 17.5″ D x 25.5″ H (Link to PDF) (including feet & grills)
• Weight: 120 lbs
• Shipping Dimensions: 28″ W x 22″ D x 30″ H, 130 lbs

Acoustic Details:

• Internal 4000W/2400W amplification (with slave/indiviually)
• Anechoic response:
  • +/-3dB from 19Hz to 200Hz outdoor response (LF Adjust @ 12 o’clock)
  • +/-3dB from 12Hz to 200Hz outdoor response (LF Adjust @ full clockwise)
  • +/-3dB from 27Hz to 200Hz outdoor response (LF Adjust @ full counter-clockwise)
• 24dB/Octave CROSSOVER selectable from 30-120Hz and Bypass
• 0-20ms DELAY adjustment for blending front/rear subwoofer sets
• Typical in-room extension to 7-12Hz

TAGS: SVS Sound Ultra SB16-Ultra PB16-Ultra, JTR Speakers, Power Sound Audio, PSA Sound, Seaton Sound Catalyst, Seaton Sound F18+, Monolith, JBL, Polk Audio, Klipsch, Ported Subwoofer, Sealed Subwoofer, Home Theater Subwoofer