Description
F18 Details and Specifications:
Amplifier & Controls (F18+):
- 4000W continuous power amplifier (with slave connected)
- 1400W continuous power as a single unit
- Capable of driving our passive F18-Slave to the same levels as a single F18+
- 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 F18 maintains composure to much more intense playback levels
- Smooth power response to 200Hz for seamless crossover and articulation with compact speakers
- Shallow sealed roll off maintained in all LF Adjust settings
- Shallow low frequency roll off typically yields 7-10Hz in-room extension
- LF Adjust shelving & room size adjustment allow for a best fit with large to small rooms or adjusting to personal preference after room correction.
Drivers & Design:
- 18″ sealed subwoofer
- High excursion 18″ driver with 3” Voice Coil
- Durable and strong inverted dish cone consisting of 2 layers woven fiberglass sandwiching a Nomex honeycomb
- Cast 12 spoke basket with large under spider venting
- Extended pole with dual aluminum shorting rings for low distortion at all power levels
- Under spider venting and large pole vent for low operational noise and thermal cooling
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 perfect alignment, increased joint strength, and sharp veneer edges.
- Matte black, decoupled 1.25” beveled face for woofer protection, baffle damping, and aesthetic appeal
- Interlocking braces enhance strength and precision of the enclosure while controlling panel vibrations
- Removable feet with counter-bored, M6 hardware allows for optional spikes or a flat bottom for stacking
- 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″ H x 23.5″ W x 18″ D (including feet and magnetically attached grill)
- Dimension Drawing (link to PDF)
- Weight: 115 lbs (F18+)
- Shipping Dimensions: 28″ W x 22″ D x 30″ H, 128 lbs
Acoustic Details:
- Internal 4000W/1400W amplification (with slave/indiviually)
- Anechoic response:
- +/-3dB from 18Hz 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
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