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  FV18 Direct Servo subwoofer
18" ported audiophile sub with 900WRMS amplifier

LFE meets accuracy and control

FV18 is our answer to the need for a high power home theatre solution that retains the dynamic and accurate bass that we have become known for. Correctly integrated, our vented subwoofers can achieve the tight bass normally associated with a sealed enclosure, yet with greater low frequency output. We recommend this subwoofer for systems in which home theatre has a high priority.

Direct Servo Technology

All our subwoofers use our patented Direct Servo technology. The servo enables precise control over the cone which is essential for tight, dynamic and accurate bass. It also counteracts many different driver non-linearities and allows us to use lighter drivers which avoid the need for excessive amounts of amplifier power.

Some of the benefits of Direct Servo include:

  • Dramatic boxy sound reduction of the re-radiation of bass from inside the box
  • Thermal compression are eliminated under normal operation
  • Higher efficiency allowing output which would normally require a more powerful amplifier
  • Deep bass extension can be achieved using a low mass driver with superior transient response
  • Mechanical creep memory effects are reduced, further improving transient response
  • The effective Q value is 0.1 resulting in much tighter and accurate bass than conventional designs

Read more about Direct Servo in our technology section.

View animation demonstrating how Direct Servo works >

HX1000XLR3 Amplifier and DS1820 Driver

FV18 comes with a grille. The above photo is shown with grill taken off. It uses our new high power HX1000XLR3 servo amplifier and the standard metal cone DS1820 driver. DS1820 features anodized aluminum cone, a 3" voice coil, and 240 oz magnet. Its linear excursion range is +/- 20mm.

The standard amplifier is HX1000XLR3. The quickguide of the XLR3 amplifier for vented subs can be found here . The FV18 installation guide can be found here . The response curves with various extension frequency/damping combinations of both amplifiers can be found in our EQ page.

The sub comes with standard screw-in rubber feet. Chrome spike feet are sold separately.

Paper Cone vs Metal Cone and Independent Lab Test Results

Standard FV18 version uses metal cone DS1820 for its stiffness and low distortion. The independent test lab site www.data-bass.com has published the max distortion numbers for our metal cone FV18 and F18. The F18 has lower distortion and yet more output than Velodyne DD18+ for 1/3 of the price. Paper cone like the one used in Velodyne DD18+ can be made lighter than metal cone and therefore improve outputs above 50hz by up to 3db with the sacrifice of slightly higher distortions. For those who are after the maximum headroom in HT application may consider the paper cone version FV18SW (with paper cone SW1825). Paper cone version will be back in stock by end of Dec. The order links are towards the bottom of this page.

The sale price includes freight shipping to 48 US continental states only. Picking up directly from UPS freight terminal saves $100 per order. Shipping to other region or country should inquire us for actual cost. Each FV18 sub comes with complimentary mover pads for either carpet or hard floor, but not both. Please be sure to select one. These are Rev2 model with 4" port opening. We also have a couple of Rev1 model with 3-1/2" port opening on sale for those who would like to save money.

Holidays sale till end of the year: $100 discount on single sub and $50 for multi-sub purchase. Price reflected in the shopping cart.

  Description: Rev2 models with 4" port opening Price  
  FV18 black oak grain finish Rev2 with HX1000XLR3 amplifier and multi-tune $1799 buy it now
  FV18 black matte paint finish Rev2 with HX1000XLR3 amplifier and multi-tune $1879 buy it now
  Customer picks up from UPS freight terminal (per order, not unit) -$100 buy it now
  2 large furniture mover pads for carpet (add-on per FV18 order) $0 buy it now
  2 large furniture mover pads for hard floor (add-on per FV18 order) $0 buy it now

  Description: Rev1 models with 3-1/2" port opening Price  
  FV18 black oak grain finish Rev1 with HX1000XLR3 amplifier and multi-tune $1699 buy it now
  FV18 black matte paint finish Rev1 with HX1000XLR3 amplifier and multi-tune $1749 buy it now
  Customer picks up from UPS freight terminal (per order, not unit) -$100 buy it now
  2 large furniture mover pads for carpet (add-on per FV18 order) $0 buy it now
  2 large furniture mover pads for hard floor (add-on per FV18 order) $0 buy it now
  Description: Other Options Price  
  Change to silver cone driver for one subwoofer $100 buy it now

Paper Cone Version

Paper cone version is only available in black oak finish. Holidays sale till end of the year: $100 discount on single sub and $50 for multi-sub purchase. Price reflected in the shopping cart. Paper cone drivers have been delayed to early Jan 2019. Please plan accordingly. We now accept pre-order.

  Description: Paper cone Rev2 models with 4" port opening with HX1000XLR3 amp Price  
  FV18SW black oak grain finish Rev2 with paper cone driver (available early Jan) $1799 buy it now